Need help with Transistor Subs...

[Govmnt_Lacky]

Trying to find suitable replacement for some OEM transistors and need some help from my fellow forumites:

2SK30A-Y

2SC732TM-GR

2SC945-P

I would appreciate ANY help with this.

Thanks 

[R.G.]

2SK30A-Y

N-channel JFET, rated for audio. "A" version, and "Y" Idss group. Google the datasheet for what the "Y" group means in terms of Idss.

In practical terms, this is one of the most common switching JFETs used in Japanese made effects, largely because its Vgsoff is under 4.5V, so it can be turned off by biasing the drain and source to 4.5V and pulling the gate to ground. They're very hard to find, as the major maker, Toshiba, quit making them. Fairchild still makes the "KSK30a" which is a same-specs device. Last time I looked, Mouser had the Fairchild KSK30a.

If you're willing to bend the pins to fit the PCB holes, 2N5485 works.

2SC732TM-GR

Silicon NPN, 50V, hfe 200-400, pdiss 400mW, to-92. Use a 2N5088 and check the pinout. Some high gain 2N3904s will work if noise is not a critical issue.

2SC945-P

Silicon NPN, 50V, hfe 200-400, pdiss 400mW, to-92. Use a 2N5088 and check the pinout. Some high gain 2N3904s will work if noise is not a critical issue.

[Govmnt_Lacky]

Thanks a bunch RG. 

So... to sum up and ensure correctness:

2SK30A-Y = Fairchild KSK30a (They DO NOT make these anymore.... just checked at the Fairchild website) OR 2N5485 (possible pin adjustment)

2SC732TM-GR & 2SC945-P = 2N5088 (with checking for proper pin config.)