2SK170 + 2SK170 + 2SK170 + 2SK170 (BL)

Toshiba Super Matched Quad (4 ea)

J-FET  N-Channel Audio Transistors

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These JFETs were matched at a constant 72 degrees using a meticulous lab process.

JFETs are inserted into a custom 90-socket gold-pin ZIF test jig (30 devices per test).

A well-regulated and carefully monitored DC supply voltage of 9.00V (not 9.01V) is

applied while FETs are allowed to stabilize for at least 5 minutes before testing.

Current (Idss) and voltage (Vgs) are then measured quickly on a calibrated

Agilent 34401 6-1/2 digit meter. FETs are matched to within 0.1mA Idss

AND 4mV Vgs. In many cases, the matching is within 0.01mA and 1mV. 

7-9mA Idss Range

Order over $200 gets 5% discount (remind me when you order).

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Brand New - From Original Boxes & U.S. Authorized Distributor (1996-2013)

TO-92 Package - Uncut - Unsoldered - Fully Tested 

Sale is for 4 pcs super-matched N-ch FETs (4ea 2SK170-BL)

First Class USPS with tracking $4.50 to 50 states for any qty ordered. 

International $45 Priority Mail or $22 First Class, any qty ordered.

30-Day Returnable only if not as described, and must be uncut and unsoldered.