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Title: Transistor to use to replace MPSA18?
Post by: MonsterBass101 on December 20, 2010, 12:56:19 PM

I'm looking to build a Sparkle drive which calls for a MPSA18 Transistor, but I have none. Is there a common replacement for this part?

Title: Re: Transistor to use to replace MPSA18?
Post by: Govmnt_Lacky on December 20, 2010, 01:00:16 PM

BC550 is one.

There are others but... none that I would call COMMON.

Good Luck ;D

Title: Re: Transistor to use to replace MPSA18?
Post by: slacker on December 20, 2010, 01:11:19 PM

A 2N3904 will work fine, probably the commonest transistor there is. In that circuit I don't think there's any particular reason why it needs to be an MPSA18.

Title: Re: Transistor to use to replace MPSA18?
Post by: Talon5051 on December 20, 2010, 01:33:10 PM

Also a 2N5089 would work. Here is a good place to start for substitutions: http://www.aronnelson.com/gallery/main.php/v/DRAGONFLY-LAYOUTS_0/The-Mod-Zone-_/TRANSISTOR_SUBSTITUTION_CHART.gif.html

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DIY Stompboxes => Building your own stompbox => Topic started by: MonsterBass101 on December 20, 2010, 12:56:19 PM