Neon lamp
NE-2 neon glow lamp · strikes at about 90 V, keeps glowing down to about 60 V · needs a series resistor (100–220 kΩ on mains) · 0.5 mA

Try it on the benchThe lab drops it on an empty bench and opens its datasheet card.
Typical part: NE-2 neon lamp
Pins
- Lead 1
- Lead 2
Ratings and limits
| Striking | ≈ 90 V |
|---|---|
| Maintaining | ≈ 60 V |
| Current | 0.3–1 mA |
How to use it
Mains indicator with a 150 kΩ resistor; or, with an RC across it, the simplest relaxation oscillator.