OA9
Vintage germanium gold bonded point contact diode OA9 made by Tesla. The diodes come from a NOS (new old stock) and have been never used. They have gold plated leads and metal housing. They can be used as a crystal radio detector or in stompbox circuits such as the Fender Blender. The gold plated leads and metal housing provide higher reliability compared to cheaper glass-housed diodes such as the 1N34A or OA79.
All diodes were tested using Peak Atlas DCA Pro semiconductor analyzer.
Features:
- low leakage current
- flat junction capacitance
- high mechanical strength
General Specifications:
- forward voltage (Tamb = 77°F / 25°C, IF = 0.1mA): 0.16 ÷ 0.20V
- forward voltage (Tamb = 77°F / 25°C, IF = 10mA): 0.32 ÷ 0.42V
Maximum ratings:
- peak inverse voltage (Tamb = 167°F / 75°C): 25V
- average rectified current (Tamb = 167°F / 75°C): 100mA
- operating and storage temperature: -60°C to +75°C
Four of these diodes are needed to make a copy of the Fender Blender - see diagram below (drawn by Phillip Bryant).
Free returns within 60 days of purchase. Money back or replacement.
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Europe: 1 – 2 weeks
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