Matched JFETs

Idss Choices One of the most common questions is what Idss sub-group to choose.  All JFETs are grade B/BL (6-12mA).  You can now choose from an Idss sub-range. If you are building any of the First Watt products, Nelson has provided a summary.  Learn more about how to choose the right Idss for your project.  Project use reference Below is a list of JFETs required for some of the most common projects. P Channel Quad: AlephJ BA1 Gain Stage ACP+ N Channel Quad: Mezmerize  NP Quad: F4 F5 F5T V1/2/3 F6 BA3 Gain Stage   F5T V3 Balanced (Qty 2) Offerings N Channel Quad (NNNN) Linear Systems LSK170 Quad Idss 6-8mA Linear Systems LSK170 Quad Idss 8-11mA P Channel Quad (PPPP) Toshiba 2SJ74 Quad Idss 6-8mA Toshiba 2SJ74 Quad Idss 8-11mA NP Quad (NNPP) Toshiba 2SK170/2SJ74 Quad Idss 6-8mA Toshiba 2SK170/2SJ74 Quad Idss 8-11mA NP Octet (NNNNPPPP) Toshiba 2SK170/2SJ74 Octet Idss 6-8mA Toshiba 2SK170/2SJ74 Octet Idss 8-11mA Specifications All parts are guaranteed to be new and authentic (Linear Systems are new, Toshiba are new-old-stock) Guaranteed matched to within ±0.2mA. Tested at 10V / 22'C. For more information visit the JFET matching information page. Manufacturer specifications: LSK170 | LSJ74 | 2SK170 | 2SJ74 Note that any letters or numbers printed on Linear Systems JFETs do not refer to  grade, they are batch identification. All grades have identical physical housing. You cannot tell the grade by looking at the JFET itself. The only way to know the grade is by testing for Idss.  Quantity Limits N Quads: Limit of 8 units per customer per month  P Quads/NP Quads: Limit of 2 units per customer per month  NP Octets: Limit of 1 units per customer per month These JFETs are provided as a service to the do-it-yourself audio hobbyist community, and it's important that we can always keep these parts in stock for small orders from hobbyists. Please only buy what you need.  If you need more than the above quantity for a particular build, please email contact@diyaudiostore.com.