EF91 – RF Pentode NOS (New Old Stock)

EF91 – RF Pentode NOS (New Old Stock)

The EF91 is a general-purpose high gain pentode, primarily designed for RF and IF amplification in television and radio receivers. It was introduced in the late 1940s and saw wide use in both civilian and military equipment. Known for its reliability and stable performance at high frequencies, the EF91 (also known as 6AM6) became a standard choice in a variety of RF applications. 

• Tube Type: RF Pentode
• Base: B7G (Miniature 7-pin)
• Heater Voltage: 6.3V
• Heater Current: 0.2A
• Typical Anode (Plate) Voltage: 250V
• Use Cases: RF and IF amplifier stages in radio and television receivers, test equipment
• Equivalents: 6AM6, CV138, Z77, M8083

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.