t4 - lds -0 281 , rev . 1 (1 2 1567 ) ?201 2 microsemi corporation page 1 of 4 1n414 8-1 available on commercial versions glass axial switching diode qualified per mil - prf - 19500/ 116 qualified levels : jan, jantx, and jantxv description th is popular 1n414 8-1 jedec re gistered switching/signal diode features internal metallurgical bonded construction for military grade products per mil - prf - 19500/116 . th is small low capacitance diode , with very fast switching speeds , is hermetically sealed and bonded into a double - plug do - 35 package. it may be used in a variety of very high speed applications including switchers, detectors, transient or'ing, logic arrays, bloc king, as well as low - capacitance steering diodes, etc. microsemi also offers a variety of other switching/signa l diodes. do - 35 (do - 204ah) package also available in : do - 213aa package (surface mount) 1n4148ur -1 ub package ( surface mount) 1n4148ub ub2 package (2- pin surface mount) 1n4148ub2 ubc package ( ceramic lid surface mount) 1n4148ubc important: for the latest information, visit our website http://www.microsemi.com . features ? popular jedec registered 1n4148 number . ? hermetically seale d glass construction . ? m etallurgical ly bond ed . ? double plug construction. ? very low capacitance . ? very fast switching speeds with minimal reverse recovery times . ? j an, jantx, and jantxv qualification s are available per mil - prf - 19500/ 116 . ? msp screening is also available in reference to mil - prf - 19500 (jans). (s ee part nomenclature for all available options .) ? rohs compliant version available (commercial grade only) . applications / benefits ? high frequency data lines. ? small size for high density mounting using flexible thru - hole leads (see package illustration). ? rs - 232 & rs C 422 i nterface n etworks. ? ethernet 10 b ase t. ? low capacitance steering or blocking . ? lan. ? computers. maximum ratings @ 25 oc unless otherwise stated msc C law rence 6 lake street, lawrence, ma 01841 tel: 1- 800 - 446 - 1158 or (978) 620 - 2600 fax: (978) 689 - 0803 msc C ireland gort road business park , ennis, co. clare, ireland tel: +353 (0) 65 6840044 fax: +353 (0) 65 6822298 website: www.microsemi.com parameters/test conditions symbol value unit junction and storage temperature t j & t stg - 65 to +1 75 o c thermal resistance junction - to - lead (1) r ? jl 250 o c /w thermal resistance junction - to - ambient (2 ) r ? ja 325 o c /w maximum breakdown voltage v ( br) 100 v working peak reverse voltage v rwm 75 v average rectified current @ t a = 75 oc (3 ) i o 200 ma non - repetitive sinusoidal surge current ( tp = 8. 3 m s) i fsm 2 a (pk) notes: 1. lead length = .375 inch (9.35 mm). see figure 2 for thermal impedance curves. 2. t a = +75c on printed circuit board (pcb), pcb = fr4 - .0625 inch (1.59 mm) 1 - layer 1 - oz cu, horizontal, in st ill air; pads for axial = .092 inch (2.34 mm) diameter, strip = .030 inch (0.76 m m) x 1 inch (25.4 mm) long, lead length l 0.187 inch ( 4.75 mm); r ? ja with a defined pcb thermal resistance condition included, is measured at i o = 200 ma . 3. see figure 1 for derating. downloaded from: http:///
t4 - lds -0 281 , rev . 1 (1 2 1567 ) ?201 2 microsemi corporation page 2 of 4 1n414 8-1 mechanical and packaging ? case: hermeticall y sealed glass package. ? terminals: t in /l ead plated or rohs compliant m atte -t in (on commercial grade only) over copper clad steel . s olderable per mil - std - 750, method 2026. ? polar ity: cathode indicated by band. ? marking: part number. ? tape & ree l option: standard per eia - 296. consult factory for quantities. ? weight: 0.2 grams. ? see p ackage di mensions on last page. part nomenclature jan 1n414 8 -1 (e3) reliability level jan = jan level jantx = jantx level jantx v = jantxv level msp (reference jans) see 1n6642 for jans level blank = c ommercial grade jedec type number (s ee e lectrical characteristic s t able ) rohs compliance e3 = rohs c ompliant (on commercial grade only ) blank = non - rohs c ompliant metallurgical ly bond ed symbols & definitions symbol definition i r reverse current: the maximum reverse (leakage) current that will flow at the specified vol tage and temperature. i o average rectified forward current: th e 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. t rr reverse recovery time: the time interval between the instant the current passes through zer o when changing from the forward direction to the reverse direction and a specified decay point after a peak reverse c urrent occurs. v f forward voltage: the forward voltage the device will exhibit at a specified current (typic ally shown as maximum value). v r reverse voltage: the reverse voltage dc value, no alternating component. v rwm working peak reverse voltage: the maximum peak voltage that can be applied over the operating t emperature range excluding all transient voltages (ref jesd282 - b). also sometimes known as piv. electrical c haracteristics @ 25 oc unless otherwise noted forward voltage v f1 @ i f =10 ma forward voltage v f2 @ i f =100 ma reverse recovery time t rr (note 1) forward recovery time t fr (note 2) reverse current i r1 @ 20 v reverse current i r2 @ 75 v reverse current i r3 @ 20 v t a =150 o c reverse current i r4 @ 75 v t a =150 o c capaci - tance c (note 3) capaci - tance c (note 4) v v ns ns na a a a pf pf 0.8 1.2 5 20 25 0.5 35 75 4.0 2.8 note 1: i f = i r = 10 ma, r l = 100 ohms . note 3: v r = 0 v, f = 1 mhz, v sig = 50 mv (pk to pk). note 2: i f = 50 ma . note 4: v r = 1.5v, f = 1 mhz, v sig = 50 mv (pk to pk). downloaded from: http:///
t4 - lds -0 281 , rev . 1 (1 2 1567 ) ?201 2 microsemi corporation page 3 of 4 1n414 8-1 graphs t a (oc) (a mbient ) figure 1 C temperature C c urrent d erating time (s) figure 2 C t hermal i mpedance dc operation maximum io rating (ma) theta ( c/w) downloaded from: http:///
t4 - lds -0 281 , rev . 1 (1 2 1567 ) ?201 2 microsemi corporation page 4 of 4 1n414 8-1 package dimensions ltr d imensions notes inch m illimeters min max min max bd .05 6 .075 1.42 1.91 3 bl .140 .180 3.56 4.57 3 ld .018 .022 0.46 0.56 ll 1.000 1.500 25.40 38.10 ll 1 .050 1.27 4 no tes: 1 . d imension s ar e in inch. 2 . m illimeter s ar e gi ven fo r genera l informat io n onl y. 3 . packag e contou r optiona l w ithi n b d an d lengt h bl . h ea t slugs , if an y , shal l be include d w ithi n thi s cy linde r bu t shal l no t be subjec t to minimum limi t of b d. the bl dimensio n shal l includ e th e entir e bod y including slugs. 4 . w ithi n thi s z on e lead , diamete r may v ar y to allo w fo r lea d finishe s and irregularitie s othe r tha n hea t slugs. 5 . in accordanc e w it h asme y 14.5 m, diameter s ar e equi v alen t to x sy mbolog y. downloaded from: http:///
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