identification - Help identifying a component in glass housing (looking like a resistor) and markings "PH 41 48" - Electrical Engineering Stack Exchange
1N618 Vintage Solid State Gold Bonded Germanium Glass Axial Diodes NOS USA 4/Pak | eBay
Marking Diode Polarity | Tempo Automation
1N4148 signal diode - Wikipedia
1N4148 SMD Glass Diode || 1N4148 Zener Diode
1N4148 Multicomp Pro, Small Signal Diode, Single, 100 V