t4 - lds - 0221, rev . 1 (112 053) ?2011 microsemi corporation page 1 of 6 ues2604 ? ues2606 available high efficiency rectifiers 30a center - tap high - reliability screening available description the ues2604 through ues2606 series is specifically designed for operation in power switching circuits operating at frequencies of at least 20 khz. this series combines two high efficiency devices into one package, simplifying installation, reducing heat sink requirements and the need to purchase matched components. microsemi also offers numerous other products to meet higher and lower power voltage regulation applications. to - 204aa (to - 3) package important: for the latest information, visit our website http://www.microsemi.com . features ? very low forward voltage ( see f igure 3 ) . ? very fast recovery times (50 n s ec). ? high surge capability. ? low thermal resistance. ? high - reliability screening option. ? both polarities available. ? rohs compliant devices av ailable. applications / benefits ? catch d iodes for s witching r egulators. ? output r ectifiers for h igh f requency s quare - w ave i nverters. ? low - profile package. ? mechanically rugged. m axim um ratings msc ? law rence 6 lake street, lawrence, ma 01841 tel: 1 - 800- 446- 1158 or (978) 620 - 2600 fax: (978) 689 - 0803 msc ? ireland gort road business park, ennis, co. clare, ireland tel: +353 (0) 65 6840044 fa x: + 353 (0) 65 6822298 website: www.microsemi.com parameters/test conditions symbol value unit junction and storage temperature t j and t stg - 55 to +150 o c thermal resistance junction - to - case r ? j c 1 o c /w repetitive peak inverse voltage ues260 4 (hr2) ues260 5 (hr2) ues260 6 (hr2) v rrm 200 300 400 v maximum average dc output current @ t c = 100 o c i o 30 a n on - repetitive sinusoidal surge current (8.3 ms) i fsm 300 a
t4 - lds - 0221, rev . 1 (112 053) ?2011 microsemi corporation page 2 of 6 ues2604 ? ues2606 mechanical and packaging ? c ase: to - 204aa (to - 3) m etal can. ? terminal s : tin - l ead plating over ni ckel. rohs compliant m atte - t in plating is also available . ? marking: msc p art n umber , date code , p olarity s ymbol. ? polarity: standard (positive output) anode 1 is p in #1 , anode 2 is p in #2 , common cathode is the c ase. reverse (negative output) cathode 1 is p in #1 , cathode 2 is p in #2 , common anode is the c ase. ? w eight: approximately 12.7 grams. ? see package dimensions on last page. optional high reliability (h r2) screening the following tests are performed on 100% of the devices specified ues2604hr2, 5hr2, 6hr. screen mil - std - 750 method conditions 1. high temperature 1032 24 hours @ t a = 150 o c 2. thermal shock (temperature cycling) 1051 g , 20 cycles, - 55 to +150 o c . no dwell required @ 25 o c , t > 1 min ute @ extremes 3. hermetic seal a. fine b. gross 1071 h, helium c, liquid 4. thermal impedance sage test 5. interim electrical parameters go/no go v f and i r @ 25 o c 6. high temperature reverse blocking s imilar to method 1040 ? sine reverse, t = 48 hours, t c = 125 o c , v rwm = rating, f = 50 - 60 hz, i o = 0 a 7. final electrical parameters go/no go v f + i r @ 25 o c pda = 10% (final electricals) part nomenclature ues 2604 r hr2 (e3) high effici ency diode series number (s ee e lectrical characteristic s t able ) polarity r = reverse blank = standard rohs compliance e3 = rohs c ompliant blank = non - rohs c ompliant screening hr2 = high - reliability blank = standard reliability
t4 - lds - 0221, rev . 1 (112 053) ?2011 microsemi corporation page 3 of 6 ues2604 ? ues2606 symbols & definitions symbol definition i f forward current: the forward current dc value, no alternating component . i fm maximum peak forward current: the peak total value of the forward current dc value. i fsm maximum fo rward surge current: the forward current, surge peak or rated forward surge current. i o average rectified output current: the o utput c urrent averaged over a full cycle with a 50 hz or 60 hz sine - wave input and a 180 degree conduction angle. i r reverse current: the maximum reverse (leakage) current that will flow at the specified voltage and temperature. t rr reverse recovery time: the time interval between the instant the current passes through zero when changing from the forward direction to the reve rse direction and a specified decay point after a peak reverse current occurs. v f maximum forward voltage: the maximum forward voltage the device will exhibit at a specified current. v r reverse voltage: the reverse voltage dc value, no alternating c omponent. v rrm repetitive peak reverse voltage: the peak reverse voltage including all repetitive transient voltages but excluding all non - repetitive transient voltages. v rw m working peak reverse voltage: the maximum peak voltage that can be applied o ver the operating temperature range excluding all transient voltages (ref jesd282 - b). also sometimes known as piv. electrical characteristics per leg type piv maximum forward voltage ? v f @ maximum reverse current ? i r @ maximum reverse recovery time - t rr (note 1) t c = 25 o c t c = 125 o c t c = 25 o c t c = 125 o c ues2604/2604hr2 ues2605/2605hr2 ues2606/2606hr2 200 v 300 v 400 v 1.25 v @ 15 a t p = 300 s 1.15 v @ 15 a t p = 300 s 50 a 10 ma 50 n s notes: 1. measured in circuit i f = 0.5 a, i r = 1 a, i rec = 0.25 a .
t4 - lds - 0221, rev . 1 (112 053) ?2011 microsemi corporation page 4 of 6 ues2604 ? ues2606 graphs t c ? case temperature ( o c) t c ? case temperature ( o c) figure 1 figure 2 output current vs. case temperature peak output current vs. case temperature v f ? forward voltage (v) v r ? reverse voltage (% of pi v) figure 3 figure 4 forward current vs. forward voltage typical reverse current vs. reverse voltage i fm ? peak output current (a) i o ? output current (a) i r ? reverse current ( a ) i f ? forward current (a)
t4 - lds - 0221, rev . 1 (112 053) ?2011 microsemi corporation page 5 of 6 ues2604 ? ues2606 graphs (continued) n ? cycles of 60 hz sinewave t p ? pulse width (m s) figure 5 figure 6 maximum forward surge vs. number of cycles ther mal impedance vs. pulse width figure 7 reverse - recovery circuit notes: 1. oscilloscope: rise time 3 ns; input impedance = 50 ? . 2. pulse generator: rise time 8 ns; source impedance 10 ? . 3. current viewing resistor, non - inductive, coaxial recommended. z ?jx ? thermal impedance ( o c /w) i fsm ? current (a)
t4 - lds - 0221, rev . 1 (112 053) ?2011 microsemi corporation page 6 of 6 ues2604 ? ues2606 package dimensions note: standard polarity is positive output. for reverse polarity (negative output) add suffix ?r?, i . e. ues260 4 r. (see schematic below.) schematic cathode to case anode to case (standard) (reverse) dim inch millimeters a .875 max. 22.23 max. b .135 max. 3.43 max. c .250 - .450 6.35 - 11.43 d .312 min. 7.92 min. e .038 - .043 dia. 0.97 - 1.09 dia f .188 max. rad. 4.78 max. rad. g 1.177 - 1.197 29.90 - 30.40 h .655 - .675 16.64 - 17.15 j .205 - .225 5.21 - 5.72 k .420 - .440 10.67 - 11.18 l .525 max. rad. 13.34 max. rad. m .151 - .161 dia. 3.84 - 4.09 dia.
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