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Old 24th May 2011, 07:41 AM   #561
gagnou is offline gagnou  Greece
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Hi Spencer,

Jfets received yesterday, thank you.
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Old 1st June 2011, 12:10 PM   #562
K8 is offline K8  Italy
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Hi Spencer,

I received today the K170's, thank you so much!!
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Old 17th June 2011, 08:34 PM   #563
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Hello spencer

Just send an email for 2SK170-BL

Thank you
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Old 18th June 2011, 05:49 AM   #564
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Hi Spencer

Money send

Thannk you
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Old 30th June 2011, 02:06 PM   #565
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Just received them

Thank you very much!
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Old 11th August 2011, 02:42 AM   #566
spencer is offline spencer  Hong Kong
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Dear All Diyers,

Able to get another box of 2000 pcs Toshiba 2SJ74BL bulk from my previous source and thus I shall resume sales of K170/J74BL match pairs. Due to higher cost, the new price will be US$4.5 each pair of K170/J74BL. All matching will be within 0.2mA.

Details is here: Fetaudio

Regards,
Spencer
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Old 28th August 2011, 09:39 PM   #567
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Hi Spencer,

I would be interested in a 2 matched pairs of 2SJ74...

Kindly let me knbow what grade you could offer and what the matching would be.

Cheers,
*
Max

EDIT: I guess matching will be 0.2mA or better.. just le me know if you would let some SJ go without the SK ...

Last edited by coolnose; 28th August 2011 at 09:42 PM. Reason: Matching...
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Old 29th August 2011, 12:34 AM   #568
spencer is offline spencer  Hong Kong
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Deal ALL,

Here are some of the conditions of the sales of Toshiba 2SJ74 match.

1. The grade I have is only BL grade. It is a single box with same datecode.
2. I can sell J74 match pair or quad alone. Price is $7 for pair and $14 for quad.
3. The match is Idss within 0.2mA, normally I select (check one more time before I pack) those within 0.1mA but I only assure 0.2mA tolerance.
4. Some may ask for match further on transconductance, the price is $10 for pair and due to yield issue, I do not prefer to provide match quad as the time is taken too long to do so.
5. Idss check equipment used: hp 3620A power supply, hp 3478A multimeter
6. Transconductance check: Tek 577 curve tracer and scan Id vs Vgs (step of -0.05V for 10 steps; ie from -0V to -0.5V in 10 steps). I select those visually very close jfets as pair on the screen.
7. The Id I take is considered as pulse mode, ie I do NOT heat up the jfets and wait 10 minutes to take the Id readings.

Thanks, Spencer
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Old 30th August 2011, 06:48 PM   #569
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Hello Spencer, I am interested in 4 pairs 2sk170/2sj74. Could you please send details to PM
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Old 11th October 2011, 03:49 PM   #570
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Hello,

I'd like 4 matched pairs of K170/J74BL and 8 matched pairs of sk170

PM me. Thanks.
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