Print Page - JFET Blues, Help needed !!

Title: JFET Blues, Help needed !!
Post by: MartyMart on August 20, 2004, 04:27:50 AM

Hi All,
Just starting to build the Sonic Distortion from GGG and don't have the 2N3904 J Fet ! I have some 2SC1815's, which i think can be used and also some 2N5457's and 2N5459's, i dont know the pin out changes required, or does one of these match the 2N3904 ??
Help ! I'm not so confident with trannies yet ! (i dont mean the ones who dress as women of course! )
Thanks,
Marty. :(

Title: JFET Blues, Help needed !!
Post by: zener on August 20, 2004, 04:34:13 AM

2N3904 is not a FET. It is a NPN silicon transistor. You can sub it with 2N5088/89, 2N2222, 2N4401, MPSA18, BC108, BC109 and other NPN.

Title: JFET Blues, Help needed !!
Post by: MartyMart on August 20, 2004, 05:13:18 AM

Sorry, i knew it was'nt a JFET ! DUH !
do you know the pin out change for using an SC1815 ? thats all i have
Thanks,
Marty.

Title: JFET Blues, Help needed !!
Post by: MartyMart on August 20, 2004, 05:21:39 AM

Thanks Zener, skip that i've just found some 3904's at the local RS store for 35 cents each, so i'll go grab a few !
Regards,
Marty.

Title: JFET Blues, Help needed !!
Post by: Steve C on August 20, 2004, 01:38:24 PM

Yes, you can use the 2SC1815's instead of the 2N3904's shouldn't have any problems, just know the the pinout on the 2SC1815 is ECB, and not EBC like the 2N3904.

Title: JFET Blues, Help needed !!
Post by: MartyMart on August 20, 2004, 03:06:47 PM

Thanks steve, thats useful to know !
Regards,
Marty.

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DIY Stompboxes => Building your own stompbox => Topic started by: MartyMart on August 20, 2004, 04:27:50 AM