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note: for detailed information on purchasing options, contact your local allegro field applications engineer or sales representative. allegro microsystems, inc. reserves the right to make, from time to time, revisions to the anticipated product life cycle plan for a product to accommodate changes in production capabilities, alternative product availabilities, or market demand. the information included herein is believed to be accurate and reliable. however, allegro microsystems, inc. assumes no respon - sibility for its use; nor for any infringements of patents or other rights of third parties which may result from its use. recommended substitutions: for existing customer transition, and for new customers or new appli - cations, refer to the acs71 2 . fully integrated, hall effect-based linear current sensor with voltage isolation and a low-resistance current conductor ACS704ELC-015 date of status change: october 31, 2006 these parts are in production but have been determined to be not for new design. this classification indicates that sale of this device is currently restricted to existing customer applications. the device should not be purchased for new design applications because obsolescence in the near future is probable. samples are no longer available. not for new design
ACS704ELC-015 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com acs704elc015-ds, rev. 6 ab so lute max i mum rat ings supply voltage, v cc .......................................... 16 v reverse supply voltage, v rcc ........................ ? 16 v output voltage, v out ........................................ 16 v reverse output voltage, v rout ...................... ? 0.1 v output current source, i out(source) ................. 3 ma output current sink, i out(sink) ....................... 10 ma operating temperature, maximum junction, t j(max) ....................... 165c storage temperature, t s ...................... ?65 to 170c features and benefits ? small footprint, low-profile soic8 package ? 1.5 m internal conductor resistance ? excellent replacement for sense resistors ? 800 v rms minimum isolation voltage between pins 1-4 and 5-8 ? 4.5 to 5.5 v, single supply operation ? 50 khz bandwidth ? 100 mv/a output sensitivity and 20 a dynamic range ? output voltage proportional to ac and dc currents ? factory-trimmed for accuracy ? extremely stable output offset voltage ? near-zero magnetic hysteresis ? ratiometric output from supply voltage the allegro acs704 family of current sensors provides economical and precise solutions for current sensing in industrial, automotive, commercial, and communications systems. the device package allows for easy implementation by the customer. typical applications include motor control, load detection and management, switched-mode power supplies, and overcurrent fault protection. the device consists of a precision, low-offset linear hall sensor circuit with a copper conduction path located near the surface of the die. applied current flowing through this copper conduction path generates a magnetic field which is sensed by the integrated hall ic and converted into a proportional voltage. device accuracy is optimized through the close proximity of the magnetic signal to the hall transducer. a precise, proportional voltage is provided by the low-offset, chopper-stabilized bicmos hall ic, which is programmed for accuracy at the factory. the output of the device has a positive slope (>v cc / 2) when an increasing current flows through the primary copper conduction path (from pins 1 and 2, to pins 3 and 4), which is the path used for current sensing. the internal resistance of this conductive path is typically 1.5 m , providing low power loss. the thickness of the copper conductor allows survival of the device at up to 3 overcurrent conditions. the terminals of the conductive path are electrically isolated from the sensor leads (pins 5 through 8). this allows the acs704 family of sensors to be used in applications requiring electrical isolation without the use of opto-isolators or other costly isolation techniques. the acs704 is provided in a small, surface mount soic8 package. the leadframe is plated with 100% matte tin, which is compatible with standard lead (pb) free printed circuit board assembly processes. internally, the flip-chip uses high-tem- perature pb-based solder balls, currently exempt from rohs. the device is fully calibrated prior to shipment from the factory. use the following complete part number when ordering: part number package ACS704ELC-015 soic8 surface mount tv america certificate number: u8v 04 12 54214 005 * 100 total pulses, 250 ms duration each, applied at a rate of 1 pulse every 100 seconds. nominal operating temperature, t a range e............................................ ?40 to 85oc overcurrent transient tolerance*, i p ................ 60 a fully integrated, hall effect-based linear current sensor with voltage isolation and a low-resistance current conductor package lc pin 1: ip+ pin 2: ip+ pin 3: ip? pin 4: ip? pin 8: vcc pin 7: vout pin 6: n.c. pin 5: gnd pins 6 and 7 are internally connected in shipping product. for compatibility with future devices, leave pin 6 floating.
2 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com acs704elc015-ds, rev. 6 ACS704ELC-015 amp out vcc +5 v pin 8 pin 7 vout pin 6 n.c. gnd pin 5 filter dynamic offset cancellation ip+ ip+ 0.1 f pin 1 pin 2 ip? ip? pin 3 pin 4 gain temperature coefficient offset voltage regulator trim control to all subcircuits a a pins 6 and 7 are internally connected in shipping product. for compatibility with future devices, leave pin 6 floating. functional block diagram
3 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com acs704elc015-ds, rev. 6 ACS704ELC-015 electrical characteristics, over operating ambient temperature range unless otherwise stated characteristic symbol test conditions min. typ. max. units primary sensed current 1 i p ?15 ? 15 a supply voltage v cc 4.5 5.0 5.5 v supply current i cc v cc = 5.0 v, output open 5 8 10 ma output resistance r out i out = 1.2 ma ? 1 2 output capacitance load c load vout to gnd ? ? 10 nf output resistive load r load vout to gnd 4.7 ? ? k primary conductor resistance r primary t a = 25c ? 1.5 ? m isolation voltage v iso pins 1-4 and 5-8; 60 hz, 1 minute 800 1200 ? v performance characteristics , t a = ?40c to 85c, v cc = 5 v unless otherwise specified propagation time t prop i p =15 a, t a = 25c ? 4 ? s response time t response i p =15 a, t a = 25c ? 8 ? s rise time t r i p =15 a, t a = 25c ? 9 ? s frequency bandwidth f ?3 db, t a = 25c; i p is 10 a peak-to- peak; no external filter ? 50 ? khz sensitivity sens over full range of i p , i p applied for 5 ms; t a = 25c ? 100 ? mv/a over full range of i p , i p applied for 5 ms; t a = ?40 to 85c 94 ? 106 mv/a noise v noise peak-to-peak, t a = 25c, no external filter ?70 ?mv root mean square, t a = 25c, no external filter ? 12.5 ? mv linearity e lin over full range of i p , i p applied for 5 ms; t a = ?40 to 85c ? 1 3.5 % symmetry e sym over full range of i p , i p applied for 5 ms; t a = ?40 to 85c 98 100 102 % zero current output voltage v out(q) i p = 0 a, t a = 25c ? v cc / 2 ? v electrical offset voltage v oe i p = 0 a, t a = 25c ?15 ? 15 mv i p = 0 a, t a = ?40 to 85c ?50 ? 50 mv magnetic offset error i errom i p = 0 a, after excursion of 15 a; t a = ?40 to 85c ? 0.01 0.05 a total output error 2 e tot i p =15 a , i p applied for 5 ms; t a = 25c ? 1.5 ? % i p = 10 a , i p applied for 5 ms; t a = ?40 to 85c ? ? 6.0 % i p = 15 a , i p applied for 5 ms; t a = ?40 to 85c ? ? 8.4 % 1 device may be operated at higher primary current, i p , and ambient temperature, t a , levels, provided that the maximum junction temperature, t j(max) , is not exceeded. 2 percentage of i p , with i p = 15 a; output filtered. up to a 2.0% shift in e tot may be observed at end-of-life for this device.
4 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com acs704elc015-ds, rev. 6 ACS704ELC-015 typical performance characteristics -50 -25 0 25 50 75 100 125 150 supply current versus ambient temperature v cc = 5 v t a (c) i cc (ma) 6.0 6.4 6.8 7.2 7.6 8.0 8.4 8.8 9.2 9.6 10.0 4.5 4.6 4.7 4.8 4.9 5 5.1 5.2 5.3 5.4 5.5 supply current versus applied v cc v cc (v) i cc (ma) 8.44 8.46 8.48 8.50 8.52 8.54 8.56 8.58 8.60 8.62 8.64 8.66
5 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com acs704elc015-ds, rev. 6 ACS704ELC-015 ?20 ?15 ?10 ?5 5 0101520 i p (a) v out (v) c output voltage versus primary current v cc = 5 v ?40 ?20 25 85 150 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 90 92 94 96 98 100 102 104 106 108 110 sens (mv/a) ?20 ?15 ?10 ?5 5 0 101520 i p (a) sensitivity versus primary current v cc = 5 v c ?40 ?20 25 150 85
6 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com acs704elc015-ds, rev. 6 ACS704ELC-015 -50 -25 0 25 50 75 100 125 150 v out(q) (v) 2.480 2.484 2.488 2.492 2.496 2.500 2.504 2.508 2.512 2.516 2.520 zero current output vo ltage vs. ambient temperature t a (c) i p = 0 a -50 -25 0 25 50 75 100 125 150 zero current output currrent versus ambient temperature (data in above chart converted to amperes) t a (c) i p = 0 a i vout(q) (a) -0.20 -0.16 -0.12 -0.08 -0.04 0 0.04 0.08 0.12 0.16 0.20
7 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com acs704elc015-ds, rev. 6 ACS704ELC-015 -50 -25 0 25 50 75 100 125 150 v om (a) magnetic offset versus ambient temperature v cc = 5 v; i p = 0 a, after excursion to 20 a t a (c) -1.0 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1.0 -50 -25 0 25 50 75 100 125 150 nonlinearity versus ambient temperature v cc = 5 v i p = 15 a t a (c) e lin (%) 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
8 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com acs704elc015-ds, rev. 6 ACS704ELC-015 typical percentage error versus ambient temperature e tot (% of 15 a) t a (c) measurements at t a = ?40, ?20, 0, 25, 70, 85, 125, and 150 c ?9 ?8 ?7 ?6 ?5 ?4 ?3 ?2 ?1 0 1 2 3 4 5 ?40 ?20 0 20 40 60 80 100 120 140 mean + 3 sigma mean mean ? 3 sigma -7.0 -6.0 -5.0 -4.0 -3.0 -2.0 -1.0 0 0 10203040506070 3 a 5 a 10 a db change from 5 khz response ac current frequency (khz) attenuation of acs704 output versus ac sinusoidal current frequency
9 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com acs704elc015-ds, rev. 6 ACS704ELC-015 typical peak-to-peak noise of ACS704ELC-015 at t a =25c step response of ACS704ELC-015 at t a =25c acs704 output (mv) 15 a excitation signal
10 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com acs704elc015-ds, rev. 6 ACS704ELC-015 ACS704ELC-015 noise filtering and frequency response performance break frequency of filter on output (khz) nominal programmed sensitivity (mv/a) peak-to- peak noise (mv) resolution with filtering (a) measured rise time for 5 a step, filtered ( s) bandwidth as derived from step response (khz) unfiltered 100 75 0.75 9 40 50 46 0.46 10.5 33.3 40 43 0.43 12 30 10 25 0.25 35 10 7.0 17 0.17 70 5 3.3 12 0.12 101 3.3
11 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com acs704elc015-ds, rev. 6 ACS704ELC-015 sensitivity (sens). the change in sensor output in response to a 1 a change through the primary conductor. the sensitivity is the prod- uct of the magnetic circuit sensitivity (g / a) and the linear ic amplifier gain (mv/g). the linear ic amplifier gain is progra mmed at the factory to optimize the sensitivity (mv/a) for the full-scale current of the device. noise (v noise ). the product of the linear ic amplifier gain (mv/g) and the noise floor for the allegro hall effect linear ic ( 1 g). the noise floor is derived from the thermal and shot noise observed in hall elements. dividing the noise (mv) by the sensitivit y (mv/a) provides the smallest current that the device is able to resolve. linearity (e lin ): the degree to which the voltage output from the sensor varies in direct proportion to the primary current through its full-scale amplitude. nonlinearity in the output can be attributed to the saturation of the flux concentrator approaching the f ull-scale current. the following equation is used to derive the linearity: definitions of accuracy characteristics 100 1? [ { [ { v out_full-scale amperes ? v out(q) ( ) 2 ( v out_half-scale amperes ? v out(q) ) 100 v out_+full-scale amperes ? v out(q) v out(q) ? v out_?full-scale amperes where v out_full-scale amperes = the output voltage (v) when the sensed current approximates full-scale i p . symmetry (e sym ). the degree to which the absolute voltage output from the sensor varies in proportion to either a positive or nega- tive full-scale primary current. the following formula is used to derive symmetry: quiescent output voltage (v out(q) ). the output of the sensor when the primary current is zero. for a unipolar supply voltage, it nominally remains at v cc 2. thus, v cc = 5 v translates into v out(q) = 2.5 v. variation in v out(q) can be attributed to the resolution of the allegro linear ic quiescent voltage trim and thermal drift. electrical offset voltage (v oe ). the deviation of the device output from its ideal quiescent value of v cc / 2 due to nonmagnetic causes. to convert this voltage to amperes, divide by the device sensitivity, sens. accuracy (e tot ). the accuracy represents the maximum deviation of the actual output from its ideal value. this is also known as the total ouput error. the accuracy is illustrated graphically in the output voltage versus current chart on the following page. accuracy is divided into four areas: ? 0 a at 25c. accuracy of sensing zero current flow at 25c, without the effects of temperature. ? 0 a over temperature. accuracy of sensing zero current flow including temperature effects. ? full-scale current at 25c. accuracy of sensing the full-scale current at 25c, without the effects of temperature. ? full-scale current over temperature. accuracy of sensing full-scale current flow including temperature effects. ratiometry . the ratiometric feature means that its 0 a output, v out(q) , (nominally equal to v cc /2) and sensitivity, sens, are propor- tional to its supply voltage, v cc . the following formula is used to derive the ratiometric change in 0 a output voltage, v out(q)rat (%): the ratiometric change in sensitivity, sens rat (%), is defined as: 100 v out(q)vcc / v out(q)5v v cc / 5 v 100 sens vcc / sens 5v v cc / 5 v
12 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com acs704elc015-ds, rev. 6 ACS704ELC-015 increasing v out (v) +i p (a) accuracy accuracy accuracy 25c only accuracy 25c only accuracy 25c only accuracy 0a vr oe temperature average v out ?i p (a) vr oe temperature vr oe temperature decreasing v out (v) ?15 a 15 a full scale output voltage vs. current, illustrating sensor accuracy at 0 a and at full-scale current
13 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com acs704elc015-ds, rev. 6 ACS704ELC-015 definitions of dynamic response characteristics propagation delay (t prop ): the time required for the sensor output to reflect a change in the primary cur- rent signal. propagation delay is attributed to inductive loading within the linear ic package, as well as in the inductive loop formed by the primary conductor geometry. propagation delay can be considered as a fixed time offset and may be compensated. response time (t response ): the time interval between a) when the primary current signal reaches 90% of its final value, and b) when the sensor reaches 90% of its output corresponding to the applied current. rise time (t r ): the time interval between a) when the sensor reaches 10% of its full scale value, and b) when it reaches 90% of its full scale value. the rise time to a step response is used to derive the bandwidth of the current sensor, in which ?(?3 db) = 0.35 / t r . both t r and t response are detrimentally affected by eddy current losses observed in the conductive ic ground plane. primary current transducer output 90 0 i (%) propagation time, t prop t primary current transducer output 90 0 i (%) response time, t response t primary current transducer output 90 10 0 i (%) rise time, t r t
14 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com acs704elc015-ds, rev. 6 ACS704ELC-015 standards and physical specifications parameter specification flammability (package molding compound) ul recognized to ul 94v-0 fire and electric shock ul60950-1:2003 en60950-1:2001 can/csa c22.2 no. 60950-1:2003 device branding key (two alternative styles are used) acs704t elc015 yywwa acs allegro current sensor 704 device family number t indicator of 100% matte tin leadframe plating e operating ambient temperature range code lc package type designator 015 primary sensed current yy manufacturing date code: calendar year (last two digits) ww manufacturing date code: calendar week a manufacturing date code: shift code acs704t elc015 l...l yyww acs allegro current sensor 704 device family number t indicator of 100% matte tin leadframe plating e operating ambient temperature range code lc package type designator 015 primary sensed current l...l manufacturing lot code yy manufacturing date code: calendar year (last two digits) ww manufacturing date code: calendar week
15 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com acs704elc015-ds, rev. 6 ACS704ELC-015 amp regulator clock/logic hall element sample and hold low-pass filter chopper stabilization technique chopper stabilization is an innovative circuit technique that is used to minimize the offset voltage of a hall element and an associated on-chip amplifier. allegro patented a chopper stabilization technique that nearly eliminates hall ic output drift induced by temperature or package stress effects. this offset reduction technique is based on a signal modulation-demodulation process. modulation is used to separate the undesired dc offset signal from the magnetically induced signal in the frequency domain. then, using a low-pass filter, the modu- lated dc offset is suppressed while the magnetically induced signal passes through the filter. as a result of this chopper stabilization approach, the output voltage from the hall ic is desensitized to the effects of temperature and mechanical stress. this technique produces devices that have an extremely stable electrical offset voltage, are immune to thermal stress, and have precise recoverability after temperature cycling. this technique is made possible through the use of a bicmos process that allows the use of low-offset and low-noise amplifiers in combination with high-density logic integration and sample and hold circuits. concept of chopper stabilization technique
16 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com acs704elc015-ds, rev. 6 ACS704ELC-015 applications information in order to quantify transient common-mode voltage rejection for the acs704, a device was soldered onto a printed circuit board. a 0.1 f bypass capacitor and a 5 v dc power supply were connected between vcc and gnd (pins 8 and 5) for this device. a 10 k load resistor and a 0.01 f capacitor were connected in parallel between the vout pin and the gnd pin of the device (pins 7 and 5). a function generator was connected between the primary current conductor (pins 1 thru 4) and the gnd pin of the device (pin 5). this function generator was configured to generate a 10 v peak (20 v peak-to-peak) sine wave between pins 1-4 and pin 5. note that the sinusoidal stimulus was applied such that no electrical current would flow through the copper conductor composed of pins 1-4 of this device. the frequency of this sine wave was varied from 60 hz to 5 mhz in discrete steps. at each frequency, the statistics feature of an oscilloscope was used to measure the voltage variations (noise) on the acs704 output in mv (peak to peak). the noise was measured both before and after the application of the stimulus. transient common-mode voltage rejection as a function of frequency is shown in the following figure. acs704 schematic diagram of the circuit used to measure transient rejection transient common-mode voltage rejection in the acs704 output vcc ground 8 7 6 5 1 2 3 4 i p v1 v out =0v v out =20vpp freq=variable c3 c0 v0 gnd r0 c=0.01f c=0.1f vdc=5v r=10k (khz) 0.06 1 10 100 300 600 800 1000 3000 5000 frequency of 20 v peak-to-peak stimulus ?60 ?55 ?50 ?45 ?40 ?35 ?30 transient rejection (db)
17 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com acs704elc015-ds, rev. 6 ACS704ELC-015 the effect of pcb layout on acs704 electrical performance eight different pc boards were fabricated to characterize the effect of pcb design on the operating junction temperature of the hall-effect ic inside of the acs704. these pc boards are shown in the figure below. 2 oz. cu on one side of board 2 oz. cu on both sides of board an acs704 device was soldered onto each pc board before beginning the thermal testing. thermal management tests were conducted with the following test conditions: tests were conducted at ambient temperature, t a = 20 c. all tests were conducted in still air. 14 gauge wires were used to connect a power supply to a single pc board. these wires carry the 15 a dc primary current during the tests. a 15 a dc primary current was applied to a single pc board containing an acs704 device. this current flowed from pins 1 and 2 to pins 3 and 4 of the acs704 package. a 1 ma current was forced from the gnd pin to the vcc pin by a fluke 179 true rms multimeter. this was the only power applied to pins 5-8 of the acs704 package during testing. the voltage required to force the 1 ma current from the gnd pin to the vcc pin was measured after applying the 15 a primary current for approximately 25 minutes. a graph similar to the graph below was used to determine the junction temperature of the acs704. voltage vs. temperature curve used to determine die junction temperature
18 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com acs704elc015-ds, rev. 6 ACS704ELC-015 the results of the testing are shown in the following table. improved pc board designs the eight pc boards in the figure above do not represent an ideal pc board for use with the acs704. the acs704 evaluation boards, for sale at the allegro web site on-line store, represent a more optimal pc board design (see photo below). on the evaluation boards, the current to be sensed flows through very wide traces that were fabricated using 2 layers of 2 oz. copper. thermal management tests were conducted on the allegro evaluation boards and all tests were performed using the same test conditions described in the bulleted list above. the results for these thermal tests are shown in the table below. when using the allegro evaluation boards we see that even at an applied current of 20 a the junction temperature of the acs704 is only ~30 degrees above ambient temperature. acs704 thermal performance on the allegro eval pc boards applied current (a) t a = 20 c, still air temp rise above ambient ( c) 15 22 20 31 effect of pcb layout on acs704 thermal performance tested at 15a, t a = 20c, still air, 2 oz. copper traces pc boards sides with traces trace width (mm) trace length (mm) temperature rise above ambient (c) 1 45090 1.5 50 overheated 41048 1.5 10 110 2 45053 1.5 50 106 41038 1.5 10 54
19 115 northeast cutoff, box 15036 worcester, massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com acs704elc015-ds, rev. 6 ACS704ELC-015 the products described herein are manufactured under one or more of the following u.s. patents: 5,045,920; 5,264,783; 5,44 2,283; 5,389,889; 5,581,179; 5,517,112; 5,619,137; 5,621,319; 5,650,719; 5,686,894; 5,694,038; 5,729,130; 5,917,320; and other patents pending. allegro microsystems, inc. reserves the right to make, from time to time, such de par tures from the detail spec i fi ca tions as may be required to permit improvements in the per for mance, reliability, or manufacturability of its products. before placing an order, the user is cautioned to verify that the information being relied upon is current. allegro products are not authorized for use as critical components in life-support devices or sys tems without express written approval. the in for ma tion in clud ed herein is believed to be ac cu rate and reliable. how ev er, allegro microsystems, inc. assumes no re spon si bil i ty for its use; nor for any in fringe ment of patents or other rights of third parties which may result from its use. copyright?2005, allegro microsystems, inc. package lc, 8-pin soic 0.25 0.10 .010 .004 1.75 1.35 .069 .053 0.51 0.31 .020 .012 4.00 3.80 .157 .150 0.25 0.17 .010 .007 8o 0o 1.27 0.40 .050 .016 5.00 4.80 .197 .189 c seating plane a b 8x 0.25 [.010] m c a b 6.20 5.80 .244 .228 c 0.10 [.004] 8x 0.25 [.010] m b m 1.27 .050 0.25 .010 2 1 8 gauge plane seating plane preliminary dimensions, for reference only dimensions in millimeters u.s. customary dimensions (in.) in brackets, for reference only (reference jedec ms-012 aa) dimensions exclusive of mold flash, gate burrs, and dambar protrusions exact case and lead configuration at supplier discretion within limits shown a terminal #1 mark area a

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