MRF/SRF/M Series

The SRF3775 is a Premium grade MRF455 and has High Gain selection G or Blue beta or higher.  You can use the SRF3775 as a direct replacement for any application where the MRF455 was used. 

New Old Stock * No longer available for export
MFR: Motorola
SKU: SRF3775MQ

NPN Silicon Power Transistor 3.0W 50 MHz 12.5V
Used * No longer available for export
MFR: Motorola
SKU: MRF476-P

Low Beta Version of MRF454
Pulled from working equipment. Scoped and tested to meet specifications

Used * No longer available for export
MFR: Motorola 
SKU: MRF458-P

Designed primarily for application as a high–power linear amplifier from 2.0 to 30 MHz.

• Specified 12.5 V, 30 MHz characteristics — Output power = 100 W (PEP), Minimum gain = 10 dB, Efficiency = 40%
• Intermodulation distortion @ 100 W (PEP) — IMD = –30 dB (min.)
• 100% tested for load mismatch at all phase angles with 30:1 VSWR

Used * No longer available for export
MFR: Motorola
SKU: MRF421-MOT-P

Designed primarily for applications as a high-power amplifier from 2.0 to 30 MHz, in single sideband mobile, marine, and base station equipment where superior riggedness is required.

• Specified 13.6 Volt, 30 MHz Characteristics- Output Power= 70 W (PEP or CW), Minimum Gain= 13 dB, Efficiency= 40%, Intermodulation Distortion d₃ = 0-33 dB Typ

Used * No longer available for export
MFR: Motorola
SKU: MRF412-P

Designed for power amplifier applications in industrial, commercial and amateur radio equipment to 30 MHz.

•  Specified 12.5 Volt, 30 MHz characteristics
•  Output power = 80 Watt
•  Minimum gain = 12 dB
•  Efficiency = 50%

Used * No longer available for export
MFR: Motorola
SKU: MRF454-MOT-P

 Designed for 12.5 volt low band VHF large-signal power amplifier applications in commercial and industrial FM equipment.

• Specified 12.5 V, 50 MHz Characteristics: Output Power= 70 W, Minimum gain= 11 dB, Efficiency= 50%
• limited Stock on hand, misc. mixed lot / DC and beta code

Used * No longer available for export
MFR: Motorola
SKU: MRF492-P

Designed for power amplifier applications in industrial, commercial, and amateur radio equipment to 30 MHz.

• Specified 12.5 V, 30 MHz characteristics: Output power = 50 W, Minimum gain = 11 dB, Efficiency = 50% 

Used * No longer available for export
MFR: Motorola
SKU: MRF450-P

Designed for 12.5 volt VHF large-signal power amplifier applications in commercial and industrial equipment operating in the 25-50 MHz frequency range.

High Gain replacement for MRF477.

New Old Stock * No longer available for export
MFR: Motorola 
SKU: MRF497