| housing |
| 2 pieces, at least. :) |
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| spencer |
| I have some 2N5462 (40V) and 2SJ103 (50V). Interested email me. |
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| housing |
| quote: | Originally posted by spencer
I have some 2N5462 (40V) and 2SJ103 (50V). Interested email me. |
Thanks for your offer, Spencer. But 2N5465 is the only choice. |
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| spencer |
| Just query what application must use 2N5465 which is a obsolete part. Actually 2N5462 and 2N5465 are same series part sorted for different working voltages in the past and I guess due to low yeild at 60V, it was later not available. |
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| housing |
| quote: | Originally posted by spencer
Just query what application must use 2N5465 which is a obsolete part. Actually 2N5462 and 2N5465 are same series part sorted for different working voltages in the past and I guess due to low yeild at 60V, it was later not available. |
It's a constant current source for the input stage of a power amplifier. 60 volt P-channel JFET is a must if I want to follow the design strictly. |
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| spencer |
| There are many methods to achieve the voltage and current for a current source. One example is to use Jfet in series with a zener diode of 20V and then then jfet will not be loaded for too high a voltage but you still get the current regulation. |
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| housing |
| quote: | Originally posted by spencer
There are many methods to achieve the voltage and current for a current source. One example is to use Jfet in series with a zener diode of 20V and then then jfet will not be loaded for too high a voltage but you still get the current regulation. |
Yes, I know that. But I just want to follow the original design strictly unless the JFET is impossible to find. :D
I just look at the data sheets of P-channel FETs, 2SJ164 with Idss over 4 mA may be a suitable replacement. Do you have it? |
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| spencer |
| Sorry I don't have. |
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| housing |
| No problem. Thank you! :) |
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