![Old tube diode displayed in Museum fur Kommunikation Communication museum Mitte quarter Berlin Germany Stock Photo - Alamy Old tube diode displayed in Museum fur Kommunikation Communication museum Mitte quarter Berlin Germany Stock Photo - Alamy](https://c8.alamy.com/comp/B22NGT/old-tube-diode-displayed-in-museum-fur-kommunikation-communication-B22NGT.jpg)
Old tube diode displayed in Museum fur Kommunikation Communication museum Mitte quarter Berlin Germany Stock Photo - Alamy
![Amazon.com: EMREVO diode 200pcs Original New IN914 high-Speed Switching diode 1N914T-73 Thick pin Old 1N9141N4148 : Industrial & Scientific Amazon.com: EMREVO diode 200pcs Original New IN914 high-Speed Switching diode 1N914T-73 Thick pin Old 1N9141N4148 : Industrial & Scientific](https://m.media-amazon.com/images/I/41IXrHl+cJL._AC_UF894,1000_QL80_.jpg)
Amazon.com: EMREVO diode 200pcs Original New IN914 high-Speed Switching diode 1N914T-73 Thick pin Old 1N9141N4148 : Industrial & Scientific
![Can any of you help me identify and spec' these old diodes? The 1N198 is an easy ID, but specs are scarce. Gold leaded diodes are labeled F4 and F8, and both have the "S" symbol. The two banded glass diodes are a complete mystery. : r/AskElectronics Can any of you help me identify and spec' these old diodes? The 1N198 is an easy ID, but specs are scarce. Gold leaded diodes are labeled F4 and F8, and both have the "S" symbol. The two banded glass diodes are a complete mystery. : r/AskElectronics](https://preview.redd.it/can-any-of-you-help-me-identify-and-spec-these-old-diodes-v0-1e0cufovyxaa1.jpg?auto=webp&s=82cf58ce0ba531d6b7506081ab8b8453693d2843)