transistor substitution
2017-02-21 by nuwavboy@...
Yahoo Groups archive
Index last updated: 2026-04-28 23:41 UTC
Thread
2017-02-21 by nuwavboy@...
Hello! I have a transistor that I believe is burned out its a TIP29 a 40V - the only other one I have on hand is a TIP31C - which is a 100V - can I substitute this one?
tom
2017-02-22 by Tom Russell
Where is it being used? Power supply? Generally, a higher voltage part can be a replacement for a lower voltage part, but the DC gain for the 100V transistor is somewhat lower than the 40 V part. It may or may not matter in the circuit, depends upon the application and other design values. -Tom Russell
From: "nuwavboy@... [vintagesynthrepair]" <vintagesynthrepair@yahoogroups.com>
To: vintagesynthrepair@yahoogroups.com
Sent: Monday, February 20, 2017 10:01 PM
Subject: [vintagesynthrepair] transistor substitution
Hello! I have a transistor that I believe is burned out its a TIP29 a 40V - the only other one I have on hand is a TIP31C - which is a 100V - can I substitute this one?
tom #yiv2548212909 #yiv2548212909 -- #yiv2548212909ygrp-mkp {border:1px solid #d8d8d8;font-family:Arial;margin:10px 0;padding:0 10px;}#yiv2548212909 #yiv2548212909ygrp-mkp hr {border:1px solid #d8d8d8;}#yiv2548212909 #yiv2548212909ygrp-mkp #yiv2548212909hd {color:#628c2a;font-size:85%;font-weight:700;line-height:122%;margin:10px 0;}#yiv2548212909 #yiv2548212909ygrp-mkp #yiv2548212909ads {margin-bottom:10px;}#yiv2548212909 #yiv2548212909ygrp-mkp .yiv2548212909ad {padding:0 0;}#yiv2548212909 #yiv2548212909ygrp-mkp .yiv2548212909ad p {margin:0;}#yiv2548212909 #yiv2548212909ygrp-mkp .yiv2548212909ad a {color:#0000ff;text-decoration:none;}#yiv2548212909 #yiv2548212909ygrp-sponsor #yiv2548212909ygrp-lc {font-family:Arial;}#yiv2548212909 #yiv2548212909ygrp-sponsor #yiv2548212909ygrp-lc #yiv2548212909hd {margin:10px 0px;font-weight:700;font-size:78%;line-height:122%;}#yiv2548212909 #yiv2548212909ygrp-sponsor #yiv2548212909ygrp-lc .yiv2548212909ad {margin-bottom:10px;padding:0 0;}#yiv2548212909 #yiv2548212909actions {font-family:Verdana;font-size:11px;padding:10px 0;}#yiv2548212909 #yiv2548212909activity {background-color:#e0ecee;float:left;font-family:Verdana;font-size:10px;padding:10px;}#yiv2548212909 #yiv2548212909activity span {font-weight:700;}#yiv2548212909 #yiv2548212909activity span:first-child {text-transform:uppercase;}#yiv2548212909 #yiv2548212909activity span a {color:#5085b6;text-decoration:none;}#yiv2548212909 #yiv2548212909activity span span {color:#ff7900;}#yiv2548212909 #yiv2548212909activity span .yiv2548212909underline {text-decoration:underline;}#yiv2548212909 .yiv2548212909attach {clear:both;display:table;font-family:Arial;font-size:12px;padding:10px 0;width:400px;}#yiv2548212909 .yiv2548212909attach div a {text-decoration:none;}#yiv2548212909 .yiv2548212909attach img {border:none;padding-right:5px;}#yiv2548212909 .yiv2548212909attach label {display:block;margin-bottom:5px;}#yiv2548212909 .yiv2548212909attach label a {text-decoration:none;}#yiv2548212909 blockquote {margin:0 0 0 4px;}#yiv2548212909 .yiv2548212909bold {font-family:Arial;font-size:13px;font-weight:700;}#yiv2548212909 .yiv2548212909bold a {text-decoration:none;}#yiv2548212909 dd.yiv2548212909last p a {font-family:Verdana;font-weight:700;}#yiv2548212909 dd.yiv2548212909last p span {margin-right:10px;font-family:Verdana;font-weight:700;}#yiv2548212909 dd.yiv2548212909last p span.yiv2548212909yshortcuts {margin-right:0;}#yiv2548212909 div.yiv2548212909attach-table div div a {text-decoration:none;}#yiv2548212909 div.yiv2548212909attach-table {width:400px;}#yiv2548212909 div.yiv2548212909file-title a, #yiv2548212909 div.yiv2548212909file-title a:active, #yiv2548212909 div.yiv2548212909file-title a:hover, #yiv2548212909 div.yiv2548212909file-title a:visited {text-decoration:none;}#yiv2548212909 div.yiv2548212909photo-title a, #yiv2548212909 div.yiv2548212909photo-title a:active, #yiv2548212909 div.yiv2548212909photo-title a:hover, #yiv2548212909 div.yiv2548212909photo-title a:visited {text-decoration:none;}#yiv2548212909 div#yiv2548212909ygrp-mlmsg #yiv2548212909ygrp-msg p a span.yiv2548212909yshortcuts {font-family:Verdana;font-size:10px;font-weight:normal;}#yiv2548212909 .yiv2548212909green {color:#628c2a;}#yiv2548212909 .yiv2548212909MsoNormal {margin:0 0 0 0;}#yiv2548212909 o {font-size:0;}#yiv2548212909 #yiv2548212909photos div {float:left;width:72px;}#yiv2548212909 #yiv2548212909photos div div {border:1px solid #666666;height:62px;overflow:hidden;width:62px;}#yiv2548212909 #yiv2548212909photos div label {color:#666666;font-size:10px;overflow:hidden;text-align:center;white-space:nowrap;width:64px;}#yiv2548212909 #yiv2548212909reco-category {font-size:77%;}#yiv2548212909 #yiv2548212909reco-desc {font-size:77%;}#yiv2548212909 .yiv2548212909replbq {margin:4px;}#yiv2548212909 #yiv2548212909ygrp-actbar div a:first-child {margin-right:2px;padding-right:5px;}#yiv2548212909 #yiv2548212909ygrp-mlmsg {font-size:13px;font-family:Arial, helvetica, clean, sans-serif;}#yiv2548212909 #yiv2548212909ygrp-mlmsg table {font-size:inherit;font:100%;}#yiv2548212909 #yiv2548212909ygrp-mlmsg select, #yiv2548212909 input, #yiv2548212909 textarea {font:99% Arial, Helvetica, clean, sans-serif;}#yiv2548212909 #yiv2548212909ygrp-mlmsg pre, #yiv2548212909 code {font:115% monospace;}#yiv2548212909 #yiv2548212909ygrp-mlmsg * {line-height:1.22em;}#yiv2548212909 #yiv2548212909ygrp-mlmsg #yiv2548212909logo {padding-bottom:10px;}#yiv2548212909 #yiv2548212909ygrp-msg p a {font-family:Verdana;}#yiv2548212909 #yiv2548212909ygrp-msg p#yiv2548212909attach-count span {color:#1E66AE;font-weight:700;}#yiv2548212909 #yiv2548212909ygrp-reco #yiv2548212909reco-head {color:#ff7900;font-weight:700;}#yiv2548212909 #yiv2548212909ygrp-reco {margin-bottom:20px;padding:0px;}#yiv2548212909 #yiv2548212909ygrp-sponsor #yiv2548212909ov li a {font-size:130%;text-decoration:none;}#yiv2548212909 #yiv2548212909ygrp-sponsor #yiv2548212909ov li {font-size:77%;list-style-type:square;padding:6px 0;}#yiv2548212909 #yiv2548212909ygrp-sponsor #yiv2548212909ov ul {margin:0;padding:0 0 0 8px;}#yiv2548212909 #yiv2548212909ygrp-text {font-family:Georgia;}#yiv2548212909 #yiv2548212909ygrp-text p {margin:0 0 1em 0;}#yiv2548212909 #yiv2548212909ygrp-text tt {font-size:120%;}#yiv2548212909 #yiv2548212909ygrp-vital ul li:last-child {border-right:none !important;}#yiv2548212909