Help Looking for HP 1854-0292 transistor for HP8444A Tracking Gen Repair

Feb 01, 2005 1 Replies

Hi



Have an HP8444A tracking gen with blown Si-NPN oscillator transistor (4 terminal) in 1.55 GHz cavity osc ASSY A7. Looking to cross this part hopefully. Any suggestions..



Thanks



Colin


Colin Gunn schrieb:

Hi Colin,

In my list is no JEDEC type, but i have the data of the transistor

1854-0292:

FT min 1.6GHz @ IC 10mA HFE min 25 max 150 @ IC 2mA VCE min 15V PD max 200mw IC max 25mA C CB 1,5pF NF max 3.5dB

I found the 2N2857 is near in most data, maybe a selected one?

I hope that helps a bit,

Jorgen dj0ud

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