SPRAGUE

2N240 JAN

SURFACE BARRIER PNP GERMANIUM TRANSISTOR

HIGH SPEED COMPUTER SWITCHING

The 

Sprague 2N240 JAN

 is a vintage PNP Germanium Surface Barrier Transistor designed primarily for high-speed computer switching and military applications. The "JAN" (Joint Army-Navy) prefix indicates it was manufactured to meet specific military performance and quality standards. 

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Technical Specifications

According to historical data and modern surplus listings from eBay and the Transistor Museum, the 2N240 features the following characteristics:

• Transistor Type: PNP BJT (Bipolar Junction Transistor) using germanium surface barrier technology.
• Maximum Operating Frequency: Capable of reliable operation up to 20 MHz (MC) in switching circuits.
• Maximum Operating Temperature: Rated up to 85 °C (185 °F).
• Power Dissipation: Rated at a maximum of 25 mW.
• Current Gain (hFE): Typically ranges from 10 to 20 in matched lots.