D3a (=7721) Siemens Germany - nos tube
| UralTone HELSINKI | 36 kpl varastossa |
D3a (=7721) Siemens Germany - nos tube
Wide-band 10 000h pentode. Near equivalent to the E 280 F, 7722. This valve is a triple mica type. Additional mica is placed between the upper mica and the getter to reduce getter material contamination on the upper mica when the getter is made so that the leakage current and noise will stay at a low level. These were made in the early 1970s by Siemens & Halske, Munich.
Key specifications
- Tube model: d3a
- Base / socket: B9A (Noval (9-pin))
Links & datasheets
Technical data and equivalence information are compiled from public sources and may contain errors. Always verify suitability and ratings from original manufacturer datasheets before use.
NOS tubes are stored in our external warehouse. Most NOS tubes are therefore not available for immediate pickup from our physical shops. Please allow an additional 2–5 business days for delivery.
| Tuotekoodi | VCS-D3a-Siemens |
|---|---|
| Barcode | 5516398921414 |
| Valmistaja | Siemens |
| Kunto (vain NOS putket) | NOS |
| tube_model | d3a |
| tube_model2 | D3a |
| tube_type | pentode |
| tube_country | Germany |
| UralTone HELSINKI | 36 kpl varastossa |