BEL 12AT7WA/ECC81 NOS Matched Quad – Short Grey Plate Golden Pin Made in India
NOS Matched Quad
Golden Pins
Short Grey Plate
Top Ring Getter
Golden Pins
Short Grey Plate
Top Ring Getter
Offering a premium New Old Stock (NOS) matched quad of 4 Pcs BEL 12AT7WA high-mu dual triodes, Serial Nos. 3804025, 3804027, 3804031, and 3804033. These high-grade military-spec tubes feature Short Grey Plates, Top Ring Getters, and Golden Pins for enhanced reliability and signal integrity. Manufactured in India by Bharat Electronics Limited (BEL), these tubes are prized for their low noise and exceptional longevity. All units are supplied in New White Boxes and have been precision characterized on the Amplitrex AT1000.
- Type: 12AT7WA / ECC81 Brand: BEL
- Condition: New in White Box Construction: Short Grey Plate / Golden Pins
- Origin: Made in India Testing: Amplitrex AT1000
Laboratory Characterization: Characterized using the Amplitrex AT1000 against factory reference parameters. This quad demonstrates robust performance, with tube 3804031 reaching a peak Plate Current of 12.6 mAdc 126%.
⚠️ International Buyers: Custom duties and taxes are the responsibility of the buyer in their country.
| Sr. No. | Test Triode | Parameter Ip (mAdc) | Result Ip (mAdc) | Percentage Ip | Parameter Gm (uMhos) | Result Gm (uMhos) | Percentage Gm |
|---|---|---|---|---|---|---|---|
| 3804025 | T1 | 10.0 | 10.4 | 104% | 5500 | 4080 | 74% |
| T2 | 10.0 | 9.2 | 92% | 5500 | 3860 | 70% | |
| 3804027 | T1 | 10.0 | 11.2 | 112% | 5500 | 4430 | 81% |
| T2 | 10.0 | 11.4 | 114% | 5500 | 4220 | 77% | |
| 3804031 | T1 | 10.0 | 8.0 | 80% | 5500 | 4080 | 74% |
| T2 | 10.0 | 12.6 | 126% | 5500 | 4780 | 87% | |
| 3804033 | T1 | 10.0 | 8.2 | 82% | 5500 | 4050 | 74% |
| T2 | 10.0 | 12.4 | 124% | 5500 | 4690 | 85% |
✉️ For technical inquiries, please Email us at [email protected]
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