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Old 17th March 2010, 06:11 PM   #1
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Default Jl500.1 car amp . Help need part#Q512

Dears:Friends.
I'm working on car amp JL500.1 . I need help a part# Q512 It may dual transistor ?. I send pdf you may reconige it is .Any help and suggestion that would be greatly appreciated.
Thanks in advanced friend from Henry vJL500.1 NEED PART# Q512 PLEASE HELP..jpg

JL500.1 CAR AMP.jpg
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Old 19th March 2010, 07:35 AM   #2
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Hi Henry,

What is the marking on the device's body? You may be able to find the part by matching the marking with the database here.

Can you trace the circuit and determine if it's dual PNP, dual NPN, a linear regulator, or some other device?
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Old 20th March 2010, 07:13 AM   #3
IVX is offline IVX  Russian Federation
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Fmba56
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Old 20th March 2010, 01:59 PM   #4
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That is LMV431B ,smd marking code N09A
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Old 20th March 2010, 06:19 PM   #5
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1) smd marking code N09A means LMV431ACM5 but not LMV431B
2) LMV431ACM5 SOT23-5, at the picture I see SOT23-6
3) it is Fmba56 marking:.2G SOT23-6
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Old 22nd March 2010, 04:02 AM   #6
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Thumbs up Thanks your Help Reconige Q512 it is FBM56 SMB TRANSISTORS

Quote:
Originally Posted by henry5000 View Post
Dears:Friends.
I'm working on car amp JL500.1 . I need help a part# Q512 It may dual transistor ?. I send pdf you may reconige it is .Any help and suggestion that would be greatly appreciated.
Thanks in advanced friend from Henry vAttachment 162971

Attachment 162972
Dears: IXV-EVAN SHUTZ And DIMON.
Thanks your help for recognine of Q512. IXV you right. It's FMB56 Marking 2g sot23-6.So i can order them at Mouser or Digitkey.
Thanks Again for your help and time and all your have great weekend from Henryv
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Old 22nd March 2010, 07:31 AM   #7
MOER is offline MOER  United States
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Default Jl 500.1

This is a dual PNP transistor, basically two MPSA56 in one package.

Ypu can substitute this with a discrete pair of MPSA56 or any high voltage TO92 PNP with a Vceo >100v

The emitters go to R512, R511 which are 221R resistors.

I have the schematic if you need it.

Contact me at Zed Audio Corporation

Steve Mantz
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