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Old 24th September 2006, 08:22 AM   #1
bobcat is offline bobcat  United Kingdom
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Default Substitute req for 2sc556

Can any one help i am looking for a general substitute for a 2sc556 transistor from nad amp, unable to locate on the web orin any of my books iknow its npn, all help greatly appreciated uk equivelent would be great, Mant Thanks .
B/C
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Old 24th September 2006, 09:16 AM   #2
singa is offline singa  Singapore
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Are you refering to 2SC556 To-39 metal can ,microwave transistor? This part is discontinued.
The similar parts as listed in the datasheet are:
2SC559
BSX59
KT602A
2N3866
BFR97

Could it be BC556 PNP? TO-92 plastic
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Old 24th September 2006, 10:14 AM   #3
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Default Hi bobcat

Where is located this transistor?
In audio section or in tuner section?
2SC556 is a RF transistor 800 MHz FT.
The substitute showed by singa are correct for RF microwave transistors,but my suspect is also a bad read (BC556?)
Another substitute :
2N3253
2N3725

Bye
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Old 24th September 2006, 10:57 AM   #4
MikeB is offline MikeB  Germany
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I also suspect a bad read, on bc556 is often printed only "c556", easily creating confusion.

Mike
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Old 24th September 2006, 01:03 PM   #5
bobcat is offline bobcat  United Kingdom
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Thanks guys have sorted it yes it was bc556 pnp gp all up and running now anyone know an average quisient current setting for nad 7020e?
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Old 24th September 2006, 01:29 PM   #6
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Hi Bob
There are the alignement procedures for the 7020 receiver
Attached Files
File Type: zip nad.zip (92.8 KB, 16 views)
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Old 24th September 2006, 03:30 PM   #7
bobcat is offline bobcat  United Kingdom
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Thank you for your help
B/c
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