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 voltage soon
![1 PC OA85 Germanium diode 115V 50mA. Black glass encapsuled Ø4.4x12 MM *Used* - £1.96 | PicClick UK 1 PC OA85 Germanium diode 115V 50mA. Black glass encapsuled Ø4.4x12 MM *Used* - £1.96 | PicClick UK](https://www.picclickimg.com/d/l400/pict/223610354336_/1-pc-TFK-OA161-Germanium-diode-140V-20mA.jpg)
1 PC OA85 Germanium diode 115V 50mA. Black glass encapsuled Ø4.4x12 MM *Used* - £1.96 | PicClick UK
![1 PC OA85 Germanium diode 115V 50mA. Black glass encapsuled Ø4.4x12 MM *Used* - £1.96 | PicClick UK 1 PC OA85 Germanium diode 115V 50mA. Black glass encapsuled Ø4.4x12 MM *Used* - £1.96 | PicClick UK](https://www.picclickimg.com/d/l400/pict/223609366468_/1-pc-1N52-OA85-Germanium-pointcontact-punktkontakt.jpg)
1 PC OA85 Germanium diode 115V 50mA. Black glass encapsuled Ø4.4x12 MM *Used* - £1.96 | PicClick UK
![Microscopy of the interior of a 1970's type germanium diode type OA85 in glass body. Left is anode, right is catode. The semiconductor cell is on the cathode. Stock Photo | Adobe Microscopy of the interior of a 1970's type germanium diode type OA85 in glass body. Left is anode, right is catode. The semiconductor cell is on the cathode. Stock Photo | Adobe](https://as2.ftcdn.net/v2/jpg/02/58/88/99/1000_F_258889995_SX6PxcCDtnw84wDe66Bg3S2UNRnifOHx.jpg)
Microscopy of the interior of a 1970's type germanium diode type OA85 in glass body. Left is anode, right is catode. The semiconductor cell is on the cathode. Stock Photo | Adobe
![OA85 OA85 Germanium Diodes [QD278] - £1.51 : Bitsbox Electronic Components, Electronic Component Suppliers UK OA85 OA85 Germanium Diodes [QD278] - £1.51 : Bitsbox Electronic Components, Electronic Component Suppliers UK](https://www.bitsbox.co.uk/images/small/semis/OA85.jpg)