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Old 24th September 2012, 04:38 PM   #501
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Get a transistor tester and go for it .
Or at least a multimeter with a transistor test function.
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Old 24th September 2012, 04:50 PM   #502
lohk is offline lohk  Europe
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Quote:
Originally Posted by Holger Barske View Post
Get a transistor tester and go for it .
Or at least a multimeter with a transistor test function.
haha

I have not followed the whole thread so closely - so any info about selection and pairing process will be helpful. Maybe there is more to know.
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Old 24th September 2012, 04:55 PM   #503
pdul is offline pdul  Denmark
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Selection of??
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Old 24th September 2012, 04:59 PM   #504
pdul is offline pdul  Denmark
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Browsing around among suppliers, it seems that somebody is vacuming for bc327/337-40
out there
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Old 24th September 2012, 05:07 PM   #505
pdul is offline pdul  Denmark
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Just for info. I just measured 75 pcs. of CDIL BC337 and many of them were out of spec.
hfe 230-270. I guess it should have been marked -16 or -25 instead of -40 So be aware that some factorys might sugarcoat the trannies with wrong markings.
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Old 24th September 2012, 05:48 PM   #506
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Same here. I have a bunch of both, and not a percent goes above 300.
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Old 24th September 2012, 05:57 PM   #507
pdul is offline pdul  Denmark
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Are yours CDIL too?
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Old 24th September 2012, 06:52 PM   #508
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Got mıne from Frans
untıl now just the 337 measured wıth cheesy
multımeter.
All between 410 and 520.
These days ıll gıve the ıntellıgent curve tracer a try.
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Old 24th September 2012, 06:58 PM   #509
pdul is offline pdul  Denmark
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My Fairchilds had high hfe npns and low pnps. but the Diotecs gave a lot of good pairs
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Old 24th September 2012, 07:09 PM   #510
ui2 is offline ui2  Germany
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Hallo Hesener,
would it be ok for you to increase my number of pcb boards (just one of the "free" sets), simply because a friend of mine got interested too?
In case there is still one set left, I would send you the money asap.
Kind regards,
U. Herrmann
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