Re: VECTOR: Transistor cross references
COLIN DAVIES <[email protected]>
| Newsgroups | gmane.games.arcade.vector |
|---|---|
| Message-ID | <[email protected]> |
This info is used at your own risk....... :-) I used an MJE15030 and its complement (MJE15031) to replace a pair on my asteroids deflection board as a bit of an exercise to see if they would work.They are dirt cheap and overrated somewhat. It seemed to work ok BUT I have not had it on very much since I did the repair. Also the pinouts are different, you have to bent the rightmost leg up, stagger the transistor in the holes so that its middle leg is in the right hand hole, and then you need to wire the lifted leg to the left hand hole... so BEWARE... :-) Another warning is the heatsink becomes "live" (but its not a problem on asteroids as they all have theire own heatsinks which are not connected to anything ) So you will probably need to fit an insulator in place if they all use a common heatsink, Or simply use an MJF15030/31 instead which have an isolated package (dont know if these are easily obtainable or not in uk) Please let me know if you have some sucess with this.. it was the best equivalent I could find 'off the shelf' with similar characteristics and voltage ratings so I could make a start rebuilding the board. Regards, Colin Paul Maddern <[email protected]> wrote: Hey all I'm looking for a cross reference for the MPSU07 and MPSU57 on my Star Wars deflection board. The whole machine works just fine now (I've had it running using a borrowed deflection PCB!) so I really want to sort this out asap! I see that I can use either SK3199/SK3200 or NTE188/NTE189 or BD529/BD530 but *none* of these parts are obtainable easily in the UK. I did however stumble across a cross reference which suggests using BD237/BD238 which are widely available everywhere... But I'm not entirely sure about the specs: http://documents.rs-components.com/rs-bin/RightSite.dll/getcontent/data.pdf? DMW_FORMAT=pdf&DMW_OBJECTID=0900766b80224c77&DMW_DOCBASE=techlib However I've read docs which suggest replacing these with a higher powered NTE49/NTE50 though? Not that I can find these either ;o) But then again, I've not even bothered looking for cross references yet! Would it be better to be searching for these instead? Can anyone please offer any advice? TIA :o) Paul --------------------------------------------------------------------------- ** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org ** Please direct other questions, comments, or problems to [email protected]