1176 Hairball/Mnats wrong transistors and diodes?
« on: October 09, 2011, 05:21:26 PM »
Hello,
I'm building the 1176 rev D Hairball Audio kit with Mnats pcb. I ordered all components via the Mouser card link on the Hairball website, but seems like there are a few things incorrect:

- According to the BOM list I need four 1N4003 rectifiers (CR7, CR8, CR9, CR10) for the power board, but Mouser sent me four 1N4004 rectifiers. Anyone knows the difference? Can I use the 1N4004 instead of the 1N4003?

- Secondary, I need seven 2N3707 transistors (Q5, Q7, Q8, Q9, Q10, Q12, Q13) and Mouser sent me twenty (??) 2N3708 transistors.
Anyone knows the difference? Can I use the 2N3708 instead of the recommened 2N3707?

Thanks in advance!

Bram


Re: 1176 Hairball/Mnats wrong transistors and diodes?
« Reply #1 on: October 09, 2011, 05:29:57 PM »
You'll be fine with the diodes, the 1n4004 just have a higher voltage rating...not sure about your transistors though. I'm sure one of the 'elders' can advise you better on that one :)

kato

Re: 1176 Hairball/Mnats wrong transistors and diodes?
« Reply #2 on: October 09, 2011, 06:10:52 PM »

Fine on both counts.

3708 is just a slightly higher gain version of the 3707.
The reason Hairball added 20 to your cart is because you need to match Q12 and Q13.
Welcome to the lab!

college101

Re: 1176 Hairball/Mnats wrong transistors and diodes?
« Reply #3 on: October 09, 2011, 08:11:56 PM »
Correct...20 to match
Norton and Thevinin are my friends..

My name should be College301 by now

Re: 1176 Hairball/Mnats wrong transistors and diodes?
« Reply #4 on: October 19, 2011, 05:52:27 PM »
Thanks! That's all I needed to know!


 

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