SOLD: 2SJ109 + 2SK389 (Genuine, NOS)
SOLD
Update: all JFETs are gone.
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Genuine Toshiba 2SK389s (NOS) purchased many years ago in Sweden before the world turned bad.
10 pcs. 2SK389GR left, all same date code "2K":
IDSS-measurement (DGS1/DGS2):
1. 3.5/3.5mA
2. 3.1/3.1
3. 5.9/5.9
4. 4.5/4.5
5. 3.5/3.5
6. 5.1/5.1
7. 3.4/3.5
8. 4.1/4.1
9. 3.2/3.2
10. 3.4/3.4
SOLD
Update: all JFETs are gone.
---
Genuine Toshiba 2SK389s (NOS) purchased many years ago in Sweden before the world turned bad.
10 pcs. 2SK389GR left, all same date code "2K":
IDSS-measurement (DGS1/DGS2):
1. 3.5/3.5mA
2. 3.1/3.1
3. 5.9/5.9
4. 4.5/4.5
5. 3.5/3.5
6. 5.1/5.1
7. 3.4/3.5
8. 4.1/4.1
9. 3.2/3.2
10. 3.4/3.4
Attachments
Last edited:
1 pair of 2SJ109 now gone.
LEFT:
2 pcs. 2SJ109BL, same date code "7D"
5 pcs. 2SK389V, same date code "2F"
10 pcs. 2SK389GR, same date code "2K"
LEFT:
2 pcs. 2SJ109BL, same date code "7D"
5 pcs. 2SK389V, same date code "2F"
10 pcs. 2SK389GR, same date code "2K"
The 2SJ109s are gone.
I went through the hassle of measuring IDSS for the remaining 2SK389s:
5 pcs. 2SK389V, same date code "2F":
1. 13.1/12.9mA
2. 11.8/11.6mA
3. 11.8/11.7mA
4. 11.7/11.5mA
5. 12.8/12.6mA
nice pairs: 1+5, 2+3
10 pcs. 2SK389GR, same date code "2K":
1. 3.5/3.5mA
2. 3.1/3.1
3. 5.9/5.9
4. 4.5/4.5
5. 3.5/3.5
6. 5.1/5.1
7. 3.4/3.5
8. 4.1/4.1
9. 3.2/3.2
10. 3.4/3.4
nice pairs: 1+5, 2+9, 7+10
I've seen better and worse pairs than these: 3+6, 4+8
Now including free shipping world wide. 🙂
I went through the hassle of measuring IDSS for the remaining 2SK389s:
5 pcs. 2SK389V, same date code "2F":
1. 13.1/12.9mA
2. 11.8/11.6mA
3. 11.8/11.7mA
4. 11.7/11.5mA
5. 12.8/12.6mA
nice pairs: 1+5, 2+3
10 pcs. 2SK389GR, same date code "2K":
1. 3.5/3.5mA
2. 3.1/3.1
3. 5.9/5.9
4. 4.5/4.5
5. 3.5/3.5
6. 5.1/5.1
7. 3.4/3.5
8. 4.1/4.1
9. 3.2/3.2
10. 3.4/3.4
nice pairs: 1+5, 2+9, 7+10
I've seen better and worse pairs than these: 3+6, 4+8
Now including free shipping world wide. 🙂
The 2SK389Vs are now gone.
Left are:
10 pcs. 2SK389GR, same date code "2K":
1. 3.5/3.5mA
2. 3.1/3.1
3. 5.9/5.9
4. 4.5/4.5
5. 3.5/3.5
6. 5.1/5.1
7. 3.4/3.5
8. 4.1/4.1
9. 3.2/3.2
10. 3.4/3.4
nice pairs: 1+5, 2+9, 7+10
I've seen better and worse pairs than these: 3+6, 4+8
30 USD / 26.90 EUR each including PayPal fee & free shipping.
Left are:
10 pcs. 2SK389GR, same date code "2K":
1. 3.5/3.5mA
2. 3.1/3.1
3. 5.9/5.9
4. 4.5/4.5
5. 3.5/3.5
6. 5.1/5.1
7. 3.4/3.5
8. 4.1/4.1
9. 3.2/3.2
10. 3.4/3.4
nice pairs: 1+5, 2+9, 7+10
I've seen better and worse pairs than these: 3+6, 4+8
30 USD / 26.90 EUR each including PayPal fee & free shipping.
Found one more unused 2SK389GR (date code 2K) in one of my treasure boxes: 4.4/4.4mA, let's call this one '11'.
Price adjusted too!
So now 11 pcs. 2SK389GR, same date code "2K":
1. 3.5/3.5mA
2. 3.1/3.1
3. 5.9/5.9
4. 4.5/4.5
5. 3.5/3.5
6. 5.1/5.1
7. 3.4/3.5
8. 4.1/4.1
9. 3.2/3.2
10. 3.4/3.4
11. 4.4/4.4
nice pairs: 1+5, 2+9, 7+10, 4+11
I've seen better and worse pairs than this pair: 3+6
Pairs 40 USD / 37.20 EUR
Singles 20 USD / 18.40 EUR
including PayPal fee & free shipping.
Price adjusted too!
So now 11 pcs. 2SK389GR, same date code "2K":
1. 3.5/3.5mA
2. 3.1/3.1
3. 5.9/5.9
4. 4.5/4.5
5. 3.5/3.5
6. 5.1/5.1
7. 3.4/3.5
8. 4.1/4.1
9. 3.2/3.2
10. 3.4/3.4
11. 4.4/4.4
nice pairs: 1+5, 2+9, 7+10, 4+11
I've seen better and worse pairs than this pair: 3+6
Pairs 40 USD / 37.20 EUR
Singles 20 USD / 18.40 EUR
including PayPal fee & free shipping.
2SK389GR Curves
Now curvetraced...
Now curvetraced...
Attachments
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2SK389_10.png34.2 KB · Views: 76
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2SK389_09.png34.9 KB · Views: 76
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2SK389_08.png35.3 KB · Views: 63
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2SK389_07.png33.9 KB · Views: 62
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2SK389_06.png37.5 KB · Views: 63
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2SK389_05.png35 KB · Views: 72
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2SK389_04.png34.6 KB · Views: 71
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2SK389_03.png38.6 KB · Views: 82
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2SK389_02.png34 KB · Views: 617
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2SK389_01.png34.9 KB · Views: 635