Help needed for transistor cross reference

If you find the data for the 2SD1835 I'm sure you could find a suitable replacement. Just because it doesn't appear in a cross-reference book doesn't make it an oddball.

Graham

According to the data sheet, it's only a little TO92 transistor, allbeit specced as a 'high current switching' transistor. It appears to be nothing special, with just general purpose applications stated for it. When I come across one of these little TO92's that has failed in a 'high current' application like in part of a power supply regulator or switching the supply to hifi's CD section or whatever, I just fit whatever comes to hand with a TO126 (small flatpak) outline. A BD131 is usually good for the job, although there are plenty of similar 2S series Jap transistors as well. It has the same E-C-B pinning (with the metal pad away from you, as the TO92 (flat towards you), and the same pin pitch, so can just drop in the original holes.

Arfa

You can always sleeve one lead and cross it over , in combination perhaps with rotating 180 degrees if current, gain , voltage, and frequency otherwise match or excede but the pinning is wrong for direct pin for pin replacement.

-- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on

Thanks for the reply. Sounds like this is pretty straight forward since I have a Mouser catalog. Thanks.

Thanks for relpying. I will try this as a sub. Looks like it is more than capable.

Hello,

According to the Japanese spec book I've got:

2SD1835 - (NPN) 60V(CBO) 50V(CEO) 2A 750mW 200h(FE) 150MHz(f(T)) compliment to a 2SB1229

I THINK (but am not positive) that the pinout, with the flat side facing you is:

Emitter - Collector - Base

There is nothing really special about this transistor except it is rated for rather high current for a tall TO-92 case. On the other hand, you might be able to use a TO-126 or TO-220 case device if there is room for one. I think a ZTX-653 would do the job too.

Regards, Tim Schwartz Bristol Electronics

On Sat, 15 Sep 2007 00:03:47 -0700, Golf put finger to keyboard and composed:

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