new generation of secondary standards he rmetically sealed high precision bulk metal ? foil technology resistors with tcr of 2 ppm/c , tolerance of 0.001 % and load life stability of 0.005 % (metrology, laboratory, in strumentation, industrial) h series vishay foil resistors document number: 63006 for any questions, contact: foil@vishaypg.com www.foilresistors.com revision: 23-mar-10 1 introduction the h series resistors are oil-f illed, hermetically sealed ultra precision resistors and are used as secondary standards for metrology applications. the hermetic sealing eliminates the ingress of moisture and oxygen, while the oil acts as a thermal conductor, thus eliminating the long-term degr adation elements of unsealed resistors, while at the same time allowing the device to accept short periods of overload without degradation. vishay?s bulk metal ? foil outperforms all other resistor technologies available today for applications that require precision and stability. when combined with the hermetic sealing and oil filling, the h series resistors become the most precise and stable resistors available . with accuracies of 0.001 %, a resistance range from 5 to 1.84 m , and long term shelf life of less than 2 ppm, these devices are virtually se condary standards that can be carried in sets for daily or periodic calibration of factory measurement equipment. the h series is available wit h laboratory and metrology level precision and long-term stability with additional in-house oriented processes su ch as: chip stabilization, special tcr plotti ng, additional tr eatments for ultra stability and special post manufacturing operations (pmo). (please refer to the last page) features ? temperature coefficient of resistance (tcr): 2 ppm/c typical (- 55 c to + 125 c, + 25 c ref.). for ultra high performances (instrumentation and metrology) please refer to the last page ? resistance range: 5 to 1.84 m (higher or lower values of resistance available) ? vishay foil resistors are not restricted to standard values; specific ?as required? values can be supplied at no extra cost or delivery (e.g. 1k2345 vs. 1k) ? power rating: 0.3 w to 2.5 w at + 25 c (depending on model - see table 2) ? tolerance: to 0.001 % (10 ppm) ? load life stability to 0.002 % (20 ppm) at 25 c, 2000 h at rated power ? load life stability can be considerably improved through in-house stabilization ? shelf life stability: 2 ppm for at least 6 years (unaffected by humidity) ? electrostatic discharge (esd) up to 25 000 v ? rise time: 1 ns effectively no ringing ? thermal stabilization time < 1 s (nominal value achieved within 10 ppm of steady state value) ? current noise: 0.010 v rms /v of applied voltage (< - 40 db) ? thermal emf: 0.05 v/c typical ? voltage coefficient: < 0.1 ppm/v ? non-inductive: < 0.08 h ? non-inductive, non-capacitive design ? non hot spot design ? terminal finish available: lead (pb)-free or tin/lead alloy ? impervious to harmful environments - oil-filled ? compliant to rohs directive 2002/95/ec ? prototype quantities available in just 5 working days or sooner. for more information, please contact foil@vishaypg.com ? for better performances (values, tcr, tolerance, stability), please see the hz series note ? for maximum tcr < 1 ppm/c, see vhp100 and contact application engineering * pb containing terminations are not rohs compliant, exemptions may apply table 1 - tcr vs. resistance value resistance value ( ) typical tcr and max. spread (- 55 c to + 125 c, + 25 c ref.) (ppm/c) 100 to < 1m84 2 2.5 50 to < 100 2 3.5 5 to < 50 2 4.5 figure 1 - shelf life - vha518-11 12k9 vs. qhe time (days) resistance chan g e (ppm) 0 100 200 300 400 500 600 700 800 900 1000 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 - 0.1
h series vishay foil resistors www.foilresistors.com for any questions, contact: foil@vishaypg.com document number: 63006 2 revision: 23-mar-10 notes * available in a 4-lead terminal ** 0.375 h available see next page for numbered footnotes figure 2 - power derating curve + 100 + 75 + 50 + 25 0 - 50 - 25 0 + 25 + 50 + 75 + 100 + 125 + 150 + 17 5 percent of rated power - 55 c ambient temperature (c) figure 3 - trimming to values (conceptual illustration) m u t u al ind u ctance red u ction d u e to change in c u rrent direction c u rrent path before trimming trimming process remo v es this material from shorting strip area changing c u rrent path and increasing resistance note: foil sho w n in b lack, etched spaces in w hite c u rrent path after trimming interloop capacitance red u ction in series figure 4 - typical resistance/ temperature curve 2 ppm/c + 150 + 100 + 50 0 - 50 - 100 - 150 - 200 (ppm) r r ambient temperature (c) c alloy 2 ppm/c - 55 + 125 + 100 + 75 + 50 + 25 0 - 25 table 2 - model selection model number resistance range ( ) standard resistance tolerance per range maximum working voltage (2) power rating at + 25 c average weight (g) construction brief dimensions (3) range ( ) tightest (%) inches mm vhp202 5 to 100k > 100k to 150k 1k to ? (1) 500 to < 1k 50 to < 500 30 to < 50 20 to < 30 10 to < 20 5 to < 10 0.001 0.0025 0.005 0.01 0.02 0.05 0.1 300 0.3 w 0.2 w 1.4 oil-filled, tinned copper leads, nickel shell, kovar and glass header w: 0.162 0.020 l: 0.415 0.020 h: 0.430 0.020** ll: 1.000 0.125 ls: 0.150 0.010 (4) st: 0.095 max. 4.11 0.51 10.54 0.51 10.92 0.51 25.4 3.18 3.81 0.25 2.41 max. vha412 5 to 100k > 100k to 150k 250 0.3 w 0.2 w 4.6 oil-filled, tinned copper leads, tinned brass shell, kovar and glass end bells l: 0.625 0.031 d: 0.375 0.031 ll: 1.000 min. 15.88 0.79 9.53 0.79 25.4 min. vha414 5 to 200k > 200k to 335k 350 0.5 w 0.3 w 7.3 l: 1.000 0.031 d: 0.375 0.031 ll: 1.000 min. 25.4 0.79 9.53 0.79 25.4 min. vha512* 5 to 300k > 300k to 500k 350 0.75 w 0.4 w 6.3 l: 0.625 0.031 d: 0.500 0.031 ll: 1.000 min. 15.88 0.79 12.7 0.79 25.4 min. vha516-4* vha516-5* vha516-6* 5 to 400k > 400k to 668k 5 to 500k > 500k to 835k 5 to 600k > 600k to 1m 500 1.0 w 0.5 w 1.25 w 0.6 w 1.5 w 0.7 w 9.2 l: 1.000 0.031 d: 0.500 0.031 ll: 1.000 min. 25.4 0.79 12.7 0.79 25.4 min. vha518-7* vha518-8* vha518-9* vha518-10* vha518-11* 5 to 700k > 700k to 1m17 5 to 800k > 800k to 1m34 5 to 900k > 900k to 1m5 5 to 1.0m > 1.0m to 1m67 5 to 1.0m > 1.0m to 1m84 600 1.75 w 0.8 w 2.0 w 0.9 w 2.25 w 1.0 w 2.5 w 1.1 w 2.5 w 1.2 w 13.5 l: 1.500 0.031 d: 0.500 0.031 ll: 1.000 min. 38.1 0.79 12.7 0.79 25.4 min.
h series vishay foil resistors document number: 63006 for any questions, contact: foil@vishaypg.com www.foilresistors.com revision: 23-mar-10 3 notes (1) upper end of resistance range varies with model selected (i.e. vhp202; the range is to 150 k ; vha518-10, the range is to 1m67 ) per table 2 (2) not to exceed power rating of resistor (3) insulating sleeve - a special case insulating plastic sleeve is available on vha models. see table 4 for instructions on how to specify (4) 0.200 " (5.08 mm) lead spacing available - specify vh202j (5) inductance (l) due mainly to the leads (6) the resolution limit of existing test equipment (within me asurement capability of the equipment, or ?essentially zero?) (7) v/c relates to emf due to lead temperature difference and v/w due to power applied to the resistor (8) load life r maximum. can be reduced through in-house oriented processes post manufacturing operations or pmo for improved end of life many analog applications can include requirements for performance under conditions of stress beyond the normal and over extended periods of time. this calls for more than just selecting a standard device and applying it to a circuit. the standard device may turn out to be all that is needed but an analysis of the projected service conditions should be made and it may well dictate a routine of stabilization known as post manufacturing operations or pmo. the pmo operations that will be discussed are only applicable to bulk metal foil resistors. they stab ilize bulk metal foil resistors while they are harmful to other types. short time overload, accelerated load life, and tem perature cycling are the three pmo exercises that do the most to remove the anomalies down the road. vishay bulk metal foil resistors are inherently stable as manufa ctured. these pmo exercises are only of value on bulk metal foil resistors and they improve the performance by amounts that are small but significant when compared to t he very tight tolerances. users are encouraged to contact vishay foil applications engineering for assistance in choosing the pmo operations that are right for their application. figure 5 - standard imprinting and dimensions table 3 - ?h? series specifications stability ( 8 ) load life at 2000 h 0.002 % (20 ppm) at 25 c at rated power shelf life 2 ppm (0.0002 %) for at least 6 years current noise < - 40 db high frequency operation rise time 1.0 ns without ringing inductance (l) (5) 0.1 h maximum; 0.08 h typical capacitance (c) 1.0 pf maximum; 0.5 pf typical voltage coefficient < 0.1 ppm/v (6) thermal emf (7) 0.1 v/c maximum; 0.05 v/c typical; 1 v/w maximum hermeticity 10 -7 atmospheric cc/s maximum ls model nu m b er v ishay xxxx v hp202 st h l date code w front view rear view lead material #22 a w g ro u nd solder coated copper resistance v al u e code tolerance serial n o. 100r01 0.01 % xxxx 06 w eek 07 year ll lead material #22 a w g ro u nd solder coated copper tolerance model n o. resistance v al u e code date code 10 w eek 07 year v ishay xxxx v ha412 100r01 0.005 % d lll
h series vishay foil resistors www.foilresistors.com for any questions, contact: foil@vishaypg.com document number: 63006 4 revision: 23-mar-10 notes (1) for non-standard requests, please contact application engineering (2) 4-terminal construction of these types are available, please quote: table 4 - global part number information (1) new global part number: y0019120k500v9l (preferred part number format) denotes precision value characteristics yr = k = k m = m 0 = standard 1 = tin/lead with plastic sleeve 9 = lead (pb)-free 19 = lead (pb)-free with plastic sleeves 2 to 999 = custom product code resistance tolerance packaging 0024 = vhp202 and vh202c 0019 = vha412 0025 = vha414 0023 = vha512 1725 = vha512 (4-terminals) 0104 = vha516-4 1726 = vha516-4 (4-terminals) 0105 = vha516-5 1727 = vha516-5 (4-terminals) 0106 = vha516-6 172 8 = vha516-6 (4-terminals) 0107 = vha518-7 1729 = vha518-7 (4-terminals) 010 8 = vha518-8 1730 = vha518-8 (4-terminals) 0109 = vha518-9 1731 = vha518-9 (4-terminals) 0110 = vha518-10 1732 = vha518-10 (4-terminals) 0111 = vha518-11 1733 = vha518-11 (4-terminals) s = 0.001 % u = 0.002 % x = 0.0025 % v = 0.005 % t = 0.01 % q = 0.02 % a = 0.05 % b = 0.1 % c = 0.25 % d = 0.5 % f = 1.0 % l = bulk pack for example: above global order y0019 120k500 v 9 l: type: vha412 value: 120.5 k absolute tolerance: 0.005 % termination: lead (pb)-free packaging: bulk pack historical part number: vha412t 120k50 v b (will continue to be used) vha412 t 120k50 v b model termination plastic sleeve ohmic value tolerance packaging vhp202 and vh202c vha412 vha414 vha512 (2) vha516-4 (2) vha516-5 (2) vha516-6 (2) vha51 8 -7 (2) vha51 8 - 8 (2) vha51 8 -9 (2) vha51 8 -10 (2) vha51 8 -11 (2) t = lead (pb)-free none = tin/lead p = plastic sleeve none = standard 120k50 = 120.5 k s = 0.001 % u = 0.002 % x = 0.0025 % v = 0.005 % t = 0.01 % q = 0.02 % a = 0.05 % b = 0.1 % c = 0.25 % d = 0.5 % f = 1.0 % b = bulk pack 2-terminal vha512 vha516-4 vha516-5 vha516-6 vha518- 7 vha518-8 vha518-9 vha518-10 vha518-11 4-terminal 302073 302074-4 302074-5 302074-6 302075-7 302075-8 302075-9 302075-10 302075-11 0191 0k5 2 y0 v9 0 l 0
h series vishay foil resistors document number: 63006 for any questions, contact: foil@vishaypg.com www.foilresistors.com revision: 23-mar-10 5 ultra high precision hermetically sealed resistors introduction the response of vishay 's hermetically sealed resistors under variable conditions and st resses can be made better by additional in-house oriented processes (pmo). processes such as short time overload, accelerated load life and temperature cycling produce enhanced levels of accuracy, stability and speed, offering immediate answers to many resistor applications curr ently believed unsolvable, and opens entirely new areas of design where the use of resistors had not been considered. applications include ? resistance standards ? feedback devices for operational amplifiers ? precision voltage dividers ? meter multipliers ? precision bridge resistors ? decade voltage dividers see table 5 for the improvement to expect in hermetically sealed parts when calling for vishay in-house oriented processes (pmo). ordering information resistors are built to your requirements. send your schematic and electrical requi rements to the applications engineering department at foil@vishaypg.com . a unique part number will be assigned which defines all aspects of your resistor. table 5 - examples of non-standard requirements type value tolerance tcr remarks absolute match absolute tracking vha518-11 set of 10 resistors (+ 20 c to + 30 c) 1 0.1 % 0.005 % 0.5 ppm/c 0.5 ppm/c with pmo vha518-7 4-terminal (+ 20 c to + 30 c) 10 0.05 % - 0.5 ppm/c - with pmo 100 0.01 % - 0.5 ppm/c - 120 0.005 % - 0.4 ppm/c - 1k 0.005 % - 0.3 ppm/c - 10k 0.001 % - 0.3 ppm/c - 100k 0.001 % - 0.3 ppm/c - vha518-7 4-terminal matched pairs (+ 20 c to + 30 c) 10 0.05 % 0.02 % 0.5 ppm/c 0.5 ppm/c with pmo 100 0.01 % 0.01 % 0.5 ppm/c 0.5 ppm/c 1k 0.005 % 0.002 % 0.3 ppm/c 0.3 ppm/c 10k 0.001 % 0.002 % 0.3 ppm/c 0.3 ppm/c 100k 0.001 % 0.002 % 0.3 ppm/c 0.3 ppm/c vha518 set of 10 resistors (+ 18 c to + 28 c, + 23 c ref.) 999 475 0.05 % 0.005 % 0.5 ppm/c 0.5 ppm/c with pmo
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