International Rectifier
ASSR1013 Set of (2) 1N2637 High Voltage, Solid State silicon Rectifiers Replacements for the 866A & 3B28 Vacuum Tube Rectifiers
- MPN:
- 5961-850-3003
- Condition:
- New
- Shipping:
- Free Shipping
Frequently bought together:
Description
ASSR1013 Set of (2) 1N2637 High Voltage, Solid State silicon Rectifiers Replacements for the 866A & 3B28 Vacuum Tube Rectifiers
Technical Specifications
- Peak Inverse Voltage (PIV): 10,400V (10.4 kV).
- Average Forward Current: 750 mA (0.75 Amps).
- Base Type: Standard UX4 (4-pin) base.
- Physical Dimensions: Approximately 1-1/4" diameter by 5-1/8" height.
- National Stock Number (NSN): 5961-850-3003
Primary Benefits
Replacing mercury-vapor tubes with the 1N2637 offers several operational advantages for vintage ham radio gear like the Johnson Viking Valiant or Hallicrafters HT-33.
- No Filament Power: It eliminates the need for a 2.5V/10A filament supply, significantly reducing the load on the power transformer and lowering internal cabinet heat.
- Instant On: Requires no warm-up period, whereas mercury-vapor tubes like the 866A require several minutes of pre-heating to vaporize mercury before high voltage is applied.
- Durability: High resistance to mechanical shock and vibration compared to glass tubes.