Need help finding Constant Current Diodes

[stellavox]

I notice that Constant Current diodes are becoming unavailable thru the "major" US suppliers - Mouser / Digikey / Newark / Allied et al.

I need some 0.5 ma (E501/1N5291; 1.0 ma (J505/1N5298; 2.2ma (CR220/1N53??
4.7ma (J511/1N5313 or 1N5314).

Any suggestions - THANKS

Charles

 

[tauro0221]

Hi,
Did you check EBAY?
Here it is a EBAY link
1N5314 MOTOROLA GOLD VINTAGE DIODE NOS RARE | eBay

 

[CopperTop]

There's a company called Micross who seem to sell them:

Micross Components | Products

 

[eyoung]

TRY OUR FRIENDS AT FLEABAY CHINA...

REGARDS, EL

 

[RJM1]

CENTRAL SEMICONDUCTOR still makes them and if you need 5000 check the link.
They do sell some values in single quantities.
Category : Semiconductors , Discretes , Diodes , Current Limiting Diodes - Future Electronics

 

[Lavcat]

I've purchased constant current diodes from Mouser in the last year or so. Is this something new?

 

[stellavox]

Thanks for your responses

Mouser only has a few types remaining and the prices have gone up substantially ($6+)
Charles

 

[John Audio]

CPC in the UK stock a range of Semitec CRD-E series current regulating diodes - look on line:

www.cpc.co.uk

search for Order codes:
SC08501 through to SC08507 for the 7 components they have.

 

[DUG]

How about using a J-fet and resistor...might do the job you need

 

[HOPHANTHIET]

CCS diodes

How about using a J-fet and resistor...might do the job you need

100% with you ;why spend $5 plus S&H fee while you can have it for $.3 .

 

[davidsrsb]

A Jfet with a source resistor has higher slope resistance than a current source diode. The penalty is higher minimum voltage drop

 

[franzm]

How about using a J-fet and resistor...might do the job you need

Or a depletion MOSFET (for higher voltage).

 

[dai]

If you want to use j-fets as ccs you should read SI design idea d171-1 they recommend
using fet s with a very low goss typical SI parts are j201-204 pn4302-04 & j230-2

regards richie