Tiny NE3.8-10 Neon glow lamp has a breakdown voltage of 65VAC to 90VAC. Circuit operating voltage of 105 to 125VAC. These glow bright orange when used with a 120VAC if a 100K resistor is connected in series with one of the leads (resistor not included – available here). We use them for triggering Xenon strobe circuits. Size about 10mm tall x 3.7mm dia. Has 4mm long leads as shown. Sold in a package of 5.