EF37A – Audio Frequency Pentode NOS

EF37A – Audio Frequency Pentode NOS (New Old Stock)

The EF37A is a high gain, high impedance pentode designed for use in audio frequency (AF) pre-amplifier stages. Its electrode system is constructed to minimize microphonic effects, ensuring superior audio performance. This valve was first introduced in 1942 and has been a standard in audio applications for many years. Notably, the Mullard-Philips EF37A is essentially equivalent to the 6J7G under a different designation.

• Tube Type: Pentode
• Base: International Octal (IO)
• Heater Voltage: 6.3V
• Heater Current: 0.2A
• Typical Anode (Plate) Voltage: 250V
• Use Cases: Audio frequency pre-amplifier stages
• Equivalents: 6J7G, CV358, CV5080, OM5B

The product image is not necessarily taken of the product being sold. Always check the datasheet for specs. The values listed are taken from various sources and may not always be accurate.