JFETs for 5ma CCS?

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A quick look through my 1968 data book (I got it for 50 cents!) gives a few possibilities for JFETs. Some of the items for 5-10 mA Idss are 2n3822, 2n4221, mfe2093-mfe2095, mfe4002, mfe4005, mpf104, mpf152, mpf155, mfe2000. For 10-20 mA Idss there are 2n4222, mfe4003, mfe4006, mpf105, mpf 153, mpf156, 2n3823, 2n4223, 2n4224, 2n4416, mfe2001, mfe2002, mpf102, mpf107. A lot of these may be hard to locate and many of them are in cans, but they did exist at one time.

With a 5mA target current, have you consedered using a CCS made of BJTs?
 
Audiofanatic,
I use BJTs because that's what I have. If I were to try to keep a reasonable assortment of FETs I'd have to buy a second garage. As for the strengths and weaknesses, there's a a wide overlap where it may be difficult to choose one over the other. What BJTs offer are: easy availability in higher voltages; higher current ratings; for a given device a more independant dropout voltage with respect to current.
 
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