![UAF 42 = 12 S 7 Vacuum tube Diode pentode 100 V 2.8 mA Number of pins: 8 Base: 8-pin rimlock Content 1 pc(s) | Conrad.com UAF 42 = 12 S 7 Vacuum tube Diode pentode 100 V 2.8 mA Number of pins: 8 Base: 8-pin rimlock Content 1 pc(s) | Conrad.com](https://asset.conrad.com/media10/isa/160267/c1/-/en/156840_BB_00_FB/image.jpg)
UAF 42 = 12 S 7 Vacuum tube Diode pentode 100 V 2.8 mA Number of pins: 8 Base: 8-pin rimlock Content 1 pc(s) | Conrad.com
![1: Cross-section diagrams of a vacuum tube diode (a), a silicon p-n... | Download Scientific Diagram 1: Cross-section diagrams of a vacuum tube diode (a), a silicon p-n... | Download Scientific Diagram](https://www.researchgate.net/publication/312022427/figure/fig1/AS:669039655407635@1536522892811/Cross-section-diagrams-of-a-vacuum-tube-diode-a-a-silicon-p-n-diode-b-and-a.jpg)
1: Cross-section diagrams of a vacuum tube diode (a), a silicon p-n... | Download Scientific Diagram
![Old vacuum tube AZ1 dual diode rectifier. Used in the power supply section. European socket Stock Photo - Alamy Old vacuum tube AZ1 dual diode rectifier. Used in the power supply section. European socket Stock Photo - Alamy](https://c8.alamy.com/comp/EHXBNP/old-vacuum-tube-az1-dual-diode-rectifier-used-in-the-power-supply-EHXBNP.jpg)
Old vacuum tube AZ1 dual diode rectifier. Used in the power supply section. European socket Stock Photo - Alamy
![2PCS 6K4 Electronic Tube Valve Vacuum Tube Replacement for 6AK5/6AK5W/6Zh1P/6J1/6J1P/EF95 Pairing Tube Amplifier DIY Preamp Vacuum Tube Price: Buy 2PCS 6K4 Electronic Tube Valve Vacuum Tube Replacement for 6AK5/6AK5W/6Zh1P/6J1/6J1P/EF95 Pairing Tube ... 2PCS 6K4 Electronic Tube Valve Vacuum Tube Replacement for 6AK5/6AK5W/6Zh1P/6J1/6J1P/EF95 Pairing Tube Amplifier DIY Preamp Vacuum Tube Price: Buy 2PCS 6K4 Electronic Tube Valve Vacuum Tube Replacement for 6AK5/6AK5W/6Zh1P/6J1/6J1P/EF95 Pairing Tube ...](https://m.media-amazon.com/images/I/711iX-tSovS._SL1500_.jpg)