Need low power high beta transistors - please drop me a few part numbers...

[Mark Johnson]

Here's the MPS6571, a special favorite of Nelson Pass in the early days of Threshold. I bought a few of them, N.O.S., from Rochester a few years ago and they did not disappoint.

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[peufeu]

Are you serious? This thread is 16 years without a replay and you are violating it's peace with nothing but off topic??

From the tablecloth, the last post is at least 60 years old, so it's okay

 

[Sensation45]

Ciddi misin? Bu konu 16 yıldır tekrarsız ve siz konu dışı bir şeyle barışını ihlal ediyorsunuz??

It doesn't concern you

 

[wrenchone]

KSA992/KSC1845?

 

[Sensation45]

KSA992/KSC1845?

I have 6 pairs of 2sc1845 2sa992 that I removed from the Onkyo amp

 

[wrenchone]

Thatsa nice,, but the FSC/ON Semi knockoff are available in quantity from Digi-Key.

 

[Mark Johnson]

They aren't all that wonderful either. Locky-Z curve tracer plots attached. | Ice | on Y-axis, units = milliamps. | Vce | on X-axis, units = volts


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[wrenchone]

They work well enough if you don't ask too much from them. If I worry about quasi-sat, I'll be using the higher current rated TO-126 devices.

 

[vendetta]

MPS A18

 

[Sensation45]

Onlar da o kadar harika değil. Locky-Z eğrisi izleyicileri ekleniyor. | Buz | Y yolundande, dağıtım = miliamper. | Vce | X'de, dağıtımda = volt

nec 2sa992 2sc1845

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[Mark Johnson]

I wasn't so thrilled with the MPSA18

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[jbau]

If you can live with 200-ish beta, I've been liking the 2SC1815 Y grade. Low capacitance and linear beta. On Semi still makes it (KSC).

 

[radule]

They aren't all that wonderful either. Locky-Z curve tracer plots attached. | Ice | on Y-axis, units = milliamps. | Vce | on X-axis, units = volts


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Hi Mark,

how is looking curve at 0,5-1,5mA where this devices is mostly used?

 

[Sensation45]

I wasn't so thrilled with the MPSA18

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Pn100a pn200a or bc550c bc560c good up to 45 v dc at input stage

 

[Sensation45]

I built bryston 4b sst clone bryston use Pn100a pn200a in login. I used bc550c bc560c.