Toshiba 2SJ74 + 2SK170 LAB MATCH QUAD to 0.1mA (7.0 – 9.0 mA range “BL” “B”)
2SJ74 + 2SJ74 + 2SK170 + 2SK170 (BL)Toshiba Super Matched Quad (2 ea type) J-FET Audio Transistors………. 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 in pairs to within 0.1mA Idss AND 10mV Vgs. Most eBay audio FET resellers do NOT match for BOTH Idss and Vgs.In some cases, the matching is within 0.01mA and 1mV. Buyers will receive the tightest matching available, prioritized by Idss. ………. Brand New – From Original Boxes & U.S. Authorized Distributor (circa 1996-2012) TO-92 Package – Uncut – Unsoldered – Tested – MatchedSale is for 4 pcs (2ea 2SJ74-BL and 2ea 2SK170-BL). Idss is 7-9 mA range “B” or “BL” First Class Mail (USA) $4.00. International First Class $18. Insured Intl Priority $42 30-Day Returnable only if not as described, and must be uncut and unsoldered.
Toshiba 2SJ74 LAB MATCHED OCTET to 0.03mA / 4mV — 8 matched FETs (4mA range)
8 Super-Matched 2SJ74 (GR) (“A”)Toshiba Super-Matched Octet Total 8 pcs Ultra-Low-NoiseJ-FET P-Channel Audio Transistors………. These JFETs were matched at a constant 72F 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 in pairs to within 0.03mA Idss AND 4mV Vgs. In some cases, the matching is within 0.01mA and 1mV. The actual measured Idss and Vgs is noted on each packing bag. ALL 8 FETs will be prioritized Idss-matched to within 0.03mA. Only a handful of octal-match sets can be achieved in a production matching run. Currently have 2SJ74GR in the 4.x mA range. Perfect for ultra-low-noise front-ends. When they’re gone, they’re gone. Orders over $200 get 5% discount. ………. Brand New – From Original Toshiba Boxes & U.S. Authorized Distributor TO-92 Package – Uncut – Unsoldered – Tested – Matched Sale is for 8 pcs (8ea 2SJ74GR, all super-matched). First Class to 50 States with tracking = $4. International First Class with tracking $18.31-Day Returnable only if not as described, and must be uncut and unsoldered.