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Philips E810F 7788 Röhren Lot SPecial Quality, Long Life etc. NOS NiB, bulk.
Technical Specifications and Design
General Information
Tube TypeE810F / 7788CategorySpecial Quality (S.Q.) Sharp-Cutoff PentodeDesigned ForWide-band amplifier serviceBaseNoval (9-pin), Gold plated pinsHeatingIndirect; A.C. or D.C.; Parallel supplyMechanical QualityShock and vibration resistantLife Test10,000 hours
Heater Ratings
Heater Voltage (Vf)6.3 VHeater Current (If)340 mA (nominal); range 320–360 mAHeater Voltage Range6.0 V to 6.6 V (exceeding this range shortens tube life)
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