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1、E I A CB4 b5 = 3234600 OOOOL2 2 Y - . FEBRUARY 1065 COMPONENTS BULLETIN No. 4 EFFECT OF THE WIRE DIAMETER ON WIREWOUND RESISTORS RELIABILITY Engineering Department ELECTRONIC INDUSTRIES ASSOCIATION Copyright Electronic Components, Assemblies of nits i n each group) “Open“ - +2.00% but not open - +LO
2、O$ t o - +1.gg$ 1 I - +0.75% t o +0.99% I 11 J I - +o. 25% t o c +O. 49% - +O. 50% t o - +O. 74% - +0.10$ t o - +0.24$ 10 - 12 +O. 05% to +O. 09% 1 2. - - 0.00% t o - +O.Ob% 48 46 TOTAL UNITS REPORTED 1 60 60 o) - +0.10$ to -_ +0.24$ 10 12 I 1 Il 1 1 O. 00% to +O TOTAL UNITS REPORTED 2. ,., . _. 3 .
3、I . 40 59 95 . 240 240 240 . . . - . - . . .- . . . . . . . . . . ., . . ._ . . CHARACTERISTIC G. . . . I . . . . . . - LOAD LIFE - 2000 Hour Measurement . . _ . . _ . . - . . . . .: . 2 . . . . . . I , . . . . . . .I. . . . . . . f .i . . . . . . . 9 :.:i :*: . . r . . . . - . : i . : - ., . . . .
4、. . L . . .i . . c . . . . . . . . . I . . . .L .i . *s.; ?. . . - - . . _ . i:. . . . 1 : - 20 - - PROBLEM HARD COPY Copyright Electronic Components, Assemblies & Materials Association Provided by IHS under license with ECA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/29/
5、2007 21:43:38 MDTNo reproduction or networking permitted without license from IHS -,-,- ./ E I A CB4 65 3234600 0000214 8 SHORT Resistance Change Absolute Highest Percent Average Maximum Percent a - Average Algebraic Mean Percent Average Absolute Mean Percent Frequency Distribution “Open I +2.OOp -1
6、 but not open (Number- of units -in each group) - + L O O $ t o - +i.&$ - +0.75% t o 50.99$- +o. 50% t o +o. 74% I - - - +0.25$ t o - + O . $ - +O.O$ t o - +0.24% - +0.05$ t o 20.09% . 0.00% t o - +0.04$ TOTAL UNITS REPORTED TIME OVERLOAD Wire Size o. 0012* o. 0009 o. O006 o, 030 O. 040 O. 040 o. OO
7、.( 0.014 o. 020 n nnu n nnh n nnn O. 004 o. 008 0.011 rr. V V I V . V V Y V . V V “ 59 60 60 59 60 60 0 , - 21 - TEMPERATURE CYCLING Wire Size Resistance Change o. 0012“ o 0009 o. 0006 0.020 o, 100 0.050 Average Algebraic Mean Percent -0.001 -0.016 -o. 003 Average Absolute Mean Percent o. 005 0.016
8、. o. 005 Absolute Highest Percent Average Maximum Percent o. 009 O-. 023 O. 017 Frequency D i s tribution Open“ - +2.0076 but not open (Number of units i n each group) - + L O O % to - +1.gg$ - +o. 75% t o o:gs$ - +o. 50% t - +o. 74% “ - +0.25$ t o - +O.&$ - +O.O$ t o - +0.24$ - +o.o5$ t o - +0.09$
9、1 0.00s t o - -1-0.04% 59 60 59 J TOTAL UNITS REPORTED 59 60 60 Copyright Electronic Components, Assemblies & Materials Association Provided by IHS under license with ECA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/29/2007 21:43:38 MDTNo reproduction or networking permitt
10、ed without license from IHS -,-,- b EIA CB4 65 W 3234b00 0000215 T W . . ,. Copyright Electronic Components, Assemblies & Materials Association Provided by IHS under license with ECA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/29/2007 21:43:38 MDTNo reproduction or networ
11、king permitted without license from IHS -,-,- E I A CB4 65 m 3234600 O000216 1 MOISTITRE RESISTANCE Resistance Change AbsoLute Highest Percent Average Maximum Percent Average Algebraic Mean Percent Average Absolute Mean Percent Frequency Distribution “Open II I - +2.00$ but not open (Number of units
12、 i n each group) - + L O % t o - +1.g% - +o 75% t o -.99$ - +0.25$ t o - +0.4% - +o.os$ to - +o.og$ O.O$ t o - +0.04% - +O, 50% to - +O. 74% - +O.los to - +0.24% TOTAL UNITS REPORTED *Based on EOUT companies . PRECISION WIREWOUND RESISTOR TYPE - 20 Day Measurement* Wire Size .e 2 o. 0009 o 0006 0.02
13、5 o. 052 0.334 o * 011 0 . w O. 140 0.002 .o.oos o. 010 O. 004 O . OQ( 0 9 o39 1 8 1 1 40 39 30 40 40 40 only. Maximum Mean INSULATION RESISTANCE* . Resistance . I Megohm 1 81,666 . 39,333 - - I Minimum 5,20 i *Bsed on four cgnpanies only. I I - 23 - Copyright Electronic Components, Assemblies & Mat
14、erials Association Provided by IHS under license with ECA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/29/2007 21:43:38 MDTNo reproduction or networking permitted without license from IHS -,-,- E I A CB4 b5 9 3234b00 0000217 3 9 - w . w p DUC noz open , - .- - +LO t o - +l
15、.gg$ +0.75% t o +0.9% - +O.SO$ t o - - +0.74$ . - +0.25%.to c + O . $ , . - - . . - +0.10$ t o - +0.24$ +o.os$ to - +o.og$ . 0.00% to.20.04$ , . - TOTAL UNITS ,mPORTED c , . _ . ._ 7 5 3 ,_ 5 9 -7 230 228 224 240 2 4 0 = - 240 . - o _ - Wire Size Resistance Change 010012 O. ooog, o . 0006 , * 0.110
16、O? 00 Absolute Highest Percent. Average Maximum Percent O. 048 Average Absolute Mean Yercent o. 0 1 O. 033 0.015 . 1. o LOS 0.23b . . Average Algebraic Mean. Percent 0.012 o. 022 3.012 brequency Distribution . 1 .(,Shorted) (Number .of units i n each group) Open It +O.OS$ t o iO.O9$ 0 . 0 6 t o - +0
17、.04$ - /o 39 8 2 2 8 192 230 O TOTAL UNTTS REPORTED I I 240 I 240 2 4 0 I Copyright Electronic Components, Assemblies & Materials Association Provided by IHS under license with ECA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/29/2007 21:43:38 MDTNo reproduction or networki
18、ng permitted without license from IHS -,-,- E I A CB4 65 m 3234600 00002L 5 m LOAD LIFE - 1000 Hour Measurement P Wire Size - Resistance Change o. 0012 o. 0009 O. 0006 Absolute Hi-ghest Percent 0,250 . . 1. i loo 3.110 Average Maximum Percent o. 113 0.315. O. b33 n nm ?U Average Algebraic Mean Perce
19、nt 0.02b v . vi-Y Average Absolute Mean Percent o ,o27 O. 041 0.052 v “ J I - Frequency Distribution. “Open“ 2 (Shorted) (Number of units i n each group) - +2.00% but not open - +LOO$ to - +1.gg% +o. - 75% to AO* 99% - +O. 50% to +O. - 74% 1 - +O. 25s to +O. 49% 1 3 - +0.10$ to - +0.24$ 1 16 -., 5 -
20、 +o.os$ to - +o.og$ 20 42 9 2 I 0 O.O to - +0,04$ 218 178 221 h TOTAL UNITS REPORTED 240. . 240 , 240 PRECISION WIREWOUND RESISTOR TYPE f LOAD LIFIE - 500 Hour Measurement* - c1.00% to - +i.gg$ - +0.75$ to - +o.gg$ +0.50$ to +0.74$ I - - +O. 25% to +O. 49% I - - I- LI I . I - +O. 10% t o - +0.24% I
21、. 3 1 l3 I 5 - +O. 05% to - +O. 09% 33 . I 6 I I I 0.0%-to - -1-0.04$ I 190 I 153 I i86 I I , TOTAL UNITS REPORTED 200 I - 200 1 200 o Based on five companies only. - 25 - Copyright Electronic Components, Assemblies & Materials Association Provided by IHS under license with ECA Licensee=IHS Employee
22、s/1111111001, User=Wing, Bernie Not for Resale, 03/29/2007 21:43:38 MDTNo reproduction or networking permitted without license from IHS -,-,- E I A CB4 65 = 3234600 00002LCl 7 . . . . . . . . . . . , .1. -i .7. J . . . . . . . . . . . . . . . . . . . . . . . ._ = . . . . . . _ . . . . . . . . - . .
23、. . . - . . . . -. a . . *%sed on five companfes only, . . . . . . . -. . . . . . . . . . . . . . . - . .- . : . . ., :* . - . . . . . . . . . . . n. . . . . . I. . . . . -,. . . .1 _ . . . , . . . . . . . i . . . . . . . . . . . - -. . *. . . . . . , . . -. . -1. e Copyright Electronic Components,
24、Assemblies & Materials Association Provided by IHS under license with ECA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/29/2007 21:43:38 MDTNo reproduction or networking permitted without license from IHS -,-,- EIA CB4 65 3234600 O000220 3 w 0 z Q -?- 4 3 2 I O EIA FINE WIR
25、E EVALUATION PROGRAM PER MIL-R-93C PRECISION WIR E WOUND RES ISTORS I I I NUMBER OF UNITS THAT EXCEEDED f0So/o RESISTANCE CHANGE I NONE OF THE 120 UNITS (4 LOTS) CHANGED MORE THAN k0,5/0 DURING (720 UNITS, 6 LOTS) IFE - 2000 HRS. ITS, 5 LOTS) I ABSOLUTE MEAN PERCENT RESISTANCE CHANGE .I 2 UNITS “SHO
26、RTED! LOAD LIFEr2000 HRS. NOT INCLUDED -MOISTURE TEST- 20 DAYS 0.0012 INCH O.OO9 INCH 0.0006 INCH WIRE DIAMETER WIRE DIAMETER WIRE DIAMETER - 27 - - . o Copyright Electronic Components, Assemblies & Materials Association Provided by IHS under license with ECA Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/29/2007 21:43:38 MDTNo reproduction or networking permitted without license from IHS -,-,-