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Old 10th July 2007, 10:37 AM   #1
msm677 is offline msm677  Philippines
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Default BC517 replacement

Any replacement for BC517 (silicon planar epitaxial darlington transistor complimentary to BC516)? I cant find any store here in philippines that has this.

please help me. thanks.
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Old 10th July 2007, 11:38 AM   #2
acid_k2 is offline acid_k2  Italy
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Try this one: MPSW45

Datasheet: http://www.onsemi.com/pub/Collateral/MPSW45-D.PDF

It's difficult to find an equivalent transistor, BC517 has a very high Hfe...
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Old 10th July 2007, 12:41 PM   #3
msm677 is offline msm677  Philippines
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Quote:
Originally posted by acid_k2
Try this one: MPSW45

Datasheet: http://www.onsemi.com/pub/Collateral/MPSW45-D.PDF

It's difficult to find an equivalent transistor, BC517 has a very high Hfe...

if i'm going to replace BC517 with MPSW45, should i replace all the other BC517 in my amplifier? I think I have 4 or more of them
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Old 10th July 2007, 03:43 PM   #4
msm677 is offline msm677  Philippines
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Join Date: Jul 2007
Quote:
Originally posted by acid_k2
Try this one: MPSW45

Datasheet: http://www.onsemi.com/pub/Collateral/MPSW45-D.PDF

It's difficult to find an equivalent transistor, BC517 has a very high Hfe...

between MPSW45-D and 2N6426, what will I choose to replace BC517? or are there any suggestion(s)? please help me.

thanks.
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Old 11th July 2007, 11:36 AM   #5
acid_k2 is offline acid_k2  Italy
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I think MPSW45A and 2N6426 are similar to BC517, both are good.

If you are repairing an amplifier, you have to replace necessarily all BROKEN components!!!

If you have to build a new amplifier, replace all BC517 with an equivalent one (MPSW45A or 2N6426)

Attention: pin configuration of MPSW45A and 2N6426 is different from BC517!
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Old 11th July 2007, 05:24 PM   #6
msm677 is offline msm677  Philippines
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Join Date: Jul 2007
Quote:
Originally posted by acid_k2
I think MPSW45A and 2N6426 are similar to BC517, both are good.

If you are repairing an amplifier, you have to replace necessarily all BROKEN components!!!

If you have to build a new amplifier, replace all BC517 with an equivalent one (MPSW45A or 2N6426)

Attention: pin configuration of MPSW45A and 2N6426 is different from BC517!
I'm repairing my old earthquake pa-4050c amplifier? I tried finding these 2 transistors and none here sells this kind. any suggestion or replacement for BC517? please help.
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Old 12th July 2007, 12:21 PM   #7
acid_k2 is offline acid_k2  Italy
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Join Date: Oct 2006
Default Last attempt

-1- try finding them in internet shop of your country or near your country...

-2- look at the attached picture:
a darlington transistor is 2 transistor "in series" to obtain an high gain, so you can try that:

-find 2 normal NPN transistor, 1A, 40V,
-connect the pins like the schematic in the picture,
-you have a typical darlington transistor...


Good luck
Attached Images
File Type: jpg bc517.jpg (28.5 KB, 192 views)
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Old 12th July 2007, 03:02 PM   #8
msm677 is offline msm677  Philippines
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Join Date: Jul 2007
Default Re: Last attempt

Quote:
Originally posted by acid_k2
-1- try finding them in internet shop of your country or near your country...

-2- look at the attached picture:
a darlington transistor is 2 transistor "in series" to obtain an high gain, so you can try that:

-find 2 normal NPN transistor, 1A, 40V,
-connect the pins like the schematic in the picture,
-you have a typical darlington transistor...


Good luck
thanks, i'll try it.
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