1855-0064 isn't in the master reference list or the several cross reference lists I looked at. I found a hit on one of the NSN sites which isn't always reliable but this one shows the hallmark's of being correct.
This part number is not for a specific device. It describes a list of important specifications that are required.
Structure: multiple JFET transistors
Material: silicon
Polarity: N-Channel
Pd: 300 mW
IDss(Id when Vgs=0V): 1mA per transistor, 8mA all transistors
Case: 0.219in diameter, hermetically sealed?
Plugging those numbers in to I find 5 known part numbers that exceed those specs.
2N3921
2N3922
2SK146
IFN146
LSK389
Looking on Mouser it seems almost every modern dual JFET meets or exceeds those specs.
You will need to check the circuit to see what Vds and Vgs makes sense. The modern JFETs range form 10 to 60V for both.
On Sun, Mar 30, 2025, 5:12?AM John Warren via <johnwarren376=[email protected]> wrote:
Looking for any info on this device. Dual JFET, N-channel, TO-71 package.? I have a 7652A and both were pulled from one of the boards.? I may pull one off another unit to curve trace but thought I ask if there's any spares out there first.??
