GE 2D21 miniature thyratron · sealed carton lot of ten
Xenon-filled miniature thyratrons for relay control, punch-card readers, and pinball logic.
- SKU
- MS-VT-0424
- Era
- 1950-2000
- Condition
- NOS, sealed GE cartons, JAN-stamped envelopes
- Dimensions
- 58 × 20 mm (H × Ø) each
- Weight
- 12 g each
- Provenance
- Purchased 2019 from a closed industrial-controls supplier in Rochester, NY.
- Category
- Vacuum Tubes & Valves
- Tags
- ge2d21thyratronindustrialjan
The 2D21 is the small workhorse thyratron of the mid-century industrial world — a xenon-filled seven-pin miniature used in everything from IBM punch-card sorters to the score reels of a Gottlieb pinball machine. Fires at a modest grid voltage, latches until the anode drops, then resets. Simple, cheap, and everywhere, once.
This lot is ten tubes in five sealed twin cartons, all with the JAN-CG-2D21W military qualification stamp and the correct amber-tinted envelope. The internal structure is the standard control-grid-plus-shield configuration; each carton includes the printed spec insert.
Sold as a lot of ten. We will not break the lot. Ideal for a restoration shop or a serious pinball operator.
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