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[TenTec] Transistor Cross Reference

To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: [TenTec] Transistor Cross Reference
From: Karl Heimbach <kheimbach@sbcglobal.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Sat, 6 Mar 2021 15:10:02 -0600
List-post: <mailto:tentec@contesting.com>
I've been through three online transistor cross references without luck.  I am looking for a small NPN that would cross to this:

    Original transistor: BC407B

    Material of Transistor: Si

    Polarity: NPN

    Maximum Collector Power Dissipation (Pc): 0.25 W

    Maximum Collector-Base Voltage |Vcb|: 50 V

    Maximum Collector-Emitter Voltage |Vce|: 45 V

    Maximum Emitter-Base Voltage |Veb|: 6 V

    Maximum Collector Current |Ic max|: 0.1 A

    Max. Operating Junction Temperature (Tj): 125 °C

    Transition Frequency (ft): 150 MHz

    Collector Capacitance (Cc): 5 pF

    Forward Current Transfer Ratio (hFE), MIN: 200


This transistor is used in the audio amplifier board of a Ten-Tec Argonaut 505.  I have several small NPN's on hand but nothing that quite matches a BC407B.


Thanks,

Karl - W5QJ


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