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OA85, 0A85 Mullard / Philips Large Black Glass Germanium Diode Made in Germany 2 | eBay
Jez @ Peak Electronic Design Ltd 💙🇪🇺 on Twitter: "So even though the germanium OA85 diode starts conducting at very low voltages (that's why they make good "crystal set" detectors), its forward
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Rare OA85 Mullard Germanium Diode Vintage
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OA 85, Tube OA85; Röhre OA 85 ID33906, Solid-State-Diode | Radiomuseum.org