Interest for genuine Toshiba 2SJ74BL curve tracer matched quads for J2

[EUVL]

As promised earlier in the Semisouth GB, we shall offer 30 quads of curve traced matched 2SJ74BLs to J2 builders.
These are from a matching pool of 1000+ devices, and are curve traced using our own equipment under controlled temperature.
They have Idss between 6.4 and 7.4mA, optimum for the J2 input stage running at 3~4mA bias.

A typical quad set is as follows.
First number is Idss (mA), second number Yfs (mS).

6.42 36.73
6.42 36.77
6.42 36.87
6.42 36.98

Both Idss and Yfs are tightly matched, as can be seen.


The price for each quad set is 600 HKD including Paypal fees and postage by registered air mail worldwide.
The GB is limited to 30 quads, and to one quad per person unless there are surplus at the end.
There will be NO waiting list to avoid dispute.

We shall call for Payment some time in December.
You will receive payment instructions by PM via DIYA when ready.


Thank you for your interest,
Patrick

 

[EUVL]

Subscription for 2SJ74BL quads for J2 :

1. forum nickname
2. forum nickname
…….


Cut-off point 30 quads.

 

[Quantensprung]

1.Quantensprung one Quad (2 or even 3 Quads if surplus will exist at the end of the GB)

Cut-off point 30 quads.

 

[obh]

1.Quantensprung one Quad (2 or even 3 Quads if surplus will exist at the end of the GB)
2. obh one quad

Cut-off point 30 quads.

 

[mordikai]

1.Quantensprung one Quad (2 or even 3 Quads if surplus will exist at the end of the GB)
2. obh one quad
3. mordikai 1 quad (2 if available)

Cut-off point 30 quads.

 

[arthur]

1.Quantensprung one Quad (2 or even 3 Quads if surplus will exist at the end of the GB)
2. obh one quad
3. mordikai 1 quad (2 if available)
4. Arthur 1 quad, if possible 2quads

Cut-off point 30 quads.

 

[EUVL]

1.Quantensprung one Quad (optional 2nd)
2. obh one quad
3. mordikai 1 quad (optional 2nd)
4. Arthur 1 quad (optional 2nd)

Cut-off point 30 quads.


Patrick

 

[Rodeodave]

1.Quantensprung one Quad (optional 2nd)
2. obh one quad
3. mordikai 1 quad (optional 2nd)
4. Arthur 1 quad (optional 2nd)
5. Rodeodave 1 quad

Cut-off point 30 quads.

 

[Tazzz]

1.Quantensprung one Quad (optional 2nd)
2. obh one quad
3. mordikai 1 quad (optional 2nd)
4. Arthur 1 quad (optional 2nd)
5. Rodeodave 1 quad
6. Tazzz 1quad (optionen 2nd)

Cut-off point 30 quads.

 

[nashbap]

1.Quantensprung one Quad (optional 2nd)
2. obh one quad
3. mordikai 1 quad (optional 2nd)
4. Arthur 1 quad (optional 2nd)
5. Rodeodave 1 quad
6. nashbap 1quad (optional 2nd)


Cut-off point 30 quads.

 

[nashbap]

Looks like Tazz and I entered our names at the same time. Not sure how to fix this.
Thanks. nash

 

[Dennis Hui]

1.Quantensprung one Quad (optional 2nd)
2. obh one quad
3. mordikai 1 quad (optional 2nd)
4. Arthur 1 quad (optional 2nd)
5. Rodeodave 1 quad
6. nashbap 1quad (optional 2nd)
7. Dennis Hui 1 quad

 

[EUVL]

1.Quantensprung one Quad (optional 2nd)
2. obh one quad
3. mordikai 1 quad (optional 2nd)
4. Arthur 1 quad (optional 2nd)
5. Rodeodave 1 quad
6. Tazzz 1quad (optionen 2nd)
7. nashbap 1quad (optional 2nd)
8. Dennis Hui 1 quad

Cut-off point 30 quads.


Patrick

 

[EUVL]

I just checked the matching data for 30 quads,
and can guarantee 0.5% match in Idss (or 0.035mA), and 4% match in Yfs in ALL cases.
When split into 2 differential pairs (as they are packed), the match is MUCH closer.

The set posted in #1 is, by chance, a good pair.
I drew it out randomly, without knowing how representative it is.


Just to be totally transparent,
Patrick

 

[skunark]

1.Quantensprung one Quad (optional 2nd)
2. obh one quad
3. mordikai 1 quad (optional 2nd)
4. Arthur 1 quad (optional 2nd)
5. Rodeodave 1 quad
6. Tazzz 1quad (optionen 2nd)
7. nashbap 1quad (optional 2nd)
8. Dennis Hui 1 quad
9. Skunark 1 quad
Cut-off point 30 quads.

 

[Russellc]

1.Quantensprung one Quad (optional 2nd)
2. obh one quad
3. mordikai 1 quad (optional 2nd)
4. Arthur 1 quad (optional 2nd)
5. Rodeodave 1 quad
6. Tazzz 1quad (optionen 2nd)
7. nashbap 1quad (optional 2nd)
8. Dennis Hui 1 quad
9. Skunark 1 quad
10. Russellc one quad
Cut-off point 30 quads.

 

[darrr]

1.Quantensprung one Quad (optional 2nd)

2. obh one quad

3. mordikai 1 quad (optional 2nd)

4. Arthur 1 quad (optional 2nd)

5. Rodeodave 1 quad

6. Tazzz 1quad (optionen 2nd)

7. nashbap 1quad (optional 2nd)

8. Dennis Hui 1 quad

9. Skunark 1 quad
10. Russellc 1 quad
11. darrr 1 quad

Cut-off point 30 quads.

 

[mlwebb]

1.Quantensprung one Quad (optional 2nd)

2. obh one quad

3. mordikai 1 quad (optional 2nd)

4. Arthur 1 quad (optional 2nd)

5. Rodeodave 1 quad

6. Tazzz 1quad (optionen 2nd)

7. nashbap 1quad (optional 2nd)

8. Dennis Hui 1 quad

9. Skunark 1 quad
10. darrr 1 quad
11. mlwebb 1 quad

Cut-off point 30 quads.

 

[Myint67]

1.Quantensprung one Quad (optional 2nd)

2. obh one quad

3. mordikai 1 quad (optional 2nd)

4. Arthur 1 quad (optional 2nd)

5. Rodeodave 1 quad

6. Tazzz 1quad (optionen 2nd)

7. nashbap 1quad (optional 2nd)

8. Dennis Hui 1 quad

9. Skunark 1 quad
10. darrr 1 quad
11. mlwebb 1 quad
12. Myint 67 1 quad

Cut-off point 30 quads.

 

[darrr]

1. Quantensprung one Quad (optional 2nd)
2. obh one quad
3. mordikai 1 quad (optional 2nd)
4. Arthur 1 quad (optional 2nd)
5. Rodeodave 1 quad
6. Tazzz 1quad (optionen 2nd)
7. nashbap 1quad (optional 2nd)
8. Dennis Hui 1 quad
9. Skunark 1 quad
10. darrr 1 quad
11. mlwebb 1 quad
12. Myint 67 1 quad

Cut-off point 30 quads.


Patrick

Missing Russellc 😉