Guest Digonto Posted July 2, 2011 Report Share Posted July 2, 2011 Hello Hero,Hero How are you ? I am in problem with my Friend's 17" CRT Philips Monitor . The HOT ( Horizontal Output Transistor ) of this Monitor has gone . The Transistor number is BU2527AF . So, I collected a HOT from an old circuit of 15" CRT Philips Monitor and it's Number was BU2708AF . After replacing with this BU2708AF - Monitor was ran for few hours successfully - But after some few hours this BU2708AF also gone due to Excessive heat .Now I am not finding any new BU2527AF in my market or not finding in old circuit at any Electronics Repairer . :-\ :-[Now I need a Substitution of this HOT BU2527AF . When I see some HOT Datasheet - I found a mismatch with the Datasheet of BU2527AF . Because BU2527AF has Collector-emitter voltage peak value ( VCESM ) - 1500V . I am surprised - it has no VCBO Voltage . :oBut look at the other HOT transistor Datasheets . They have the VCBO voltage instead of VCESM . ???What is the difference between VCESM and VCBO ?? Are they Same ........... !?!? ??? ???For your consideration I am attaching datasheet of two HOT - BU2527AF and NTE2365 . Please watch these both datasheet and tell me can I use this NTE2365 instead BU2527AF ??And as far as I know, For replacing Power Transistor I have to look up at - VCBO, VCEO, IC ( max ), hFE, Tf, PDtot . These value should be near or higher than orginal one . Am I right ?? ??? ???And one more thing I am watching - BU2527AF has operation upto 64 kHz and some other same HOT operation upto 32kHz . Will this 64kHz and 32kHz be problem for Monitor ??I am attaching two sample Datasheet below ...........BU2527AF.pdfNTE2365.pdf Quote Link to comment Share on other sites More sharing options...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.