Up for sale are quads of new original stock (NOS) genuine guaranteed authentic Toshiba N-channel 2SK170-BL audio JFETS.
The Idss (drain current for zero bias) and Yfs (transconductance @Idss) were recorded under constant ambient conditions by curve-tracing a large batch (single lot#) of BL-grade 2SK170 JFETS sourced 10+ years ago from Spencer. The Yfs vs. Idss distribution for this batch of transistors is shown.
The JFETs were sorted into individual bins of 4 (quads) with highly similar measured values for Idss (difference < 0.03 mA) and Yfs (difference < 1 mS).
If interested, please consult THIS LIST for available devices and send me a PM indicating the desired quad(s) and your shipping address.
The cost is 24 euro for one quad and 20 euro/quad for two or more quads + postage.
The FETs are individually labeled and shipped in anti-static bags.
Postage by international priority mail (no tracking): 4.45€ for EU/UK, 5.35€ for US/America and 7.35€ for Asia/Australia.
Postage by registered mail: 9.80€ for EU/UK, 12.30€ for US/America and 14.00€ for Asia/Australia.
Payment by PayPal (I will cover fees).
The Idss (drain current for zero bias) and Yfs (transconductance @Idss) were recorded under constant ambient conditions by curve-tracing a large batch (single lot#) of BL-grade 2SK170 JFETS sourced 10+ years ago from Spencer. The Yfs vs. Idss distribution for this batch of transistors is shown.
The JFETs were sorted into individual bins of 4 (quads) with highly similar measured values for Idss (difference < 0.03 mA) and Yfs (difference < 1 mS).
If interested, please consult THIS LIST for available devices and send me a PM indicating the desired quad(s) and your shipping address.
The cost is 24 euro for one quad and 20 euro/quad for two or more quads + postage.
The FETs are individually labeled and shipped in anti-static bags.
Postage by international priority mail (no tracking): 4.45€ for EU/UK, 5.35€ for US/America and 7.35€ for Asia/Australia.
Postage by registered mail: 9.80€ for EU/UK, 12.30€ for US/America and 14.00€ for Asia/Australia.
Payment by PayPal (I will cover fees).
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Pass DIY Addict
Joined 2000
Paid Member
Just a plug for NicMac - have had lots of great transactions (and successful builds) with him in the past!
Having bought actives from Spencer for over 10yrs myself and seeing how you tracked rise time: Curious as to what curve tracer and/or tracer setup your using. Not being critical, I like the way you've presented your results. I've got bags of unmatched fets and hope to one day get setup to properly match them all.
Charles
Charles
