MRF/SRF/M Series

This transistor is High Gain Selected MRF421. The SRF3662 was selected for Beta as Blue Dot or above. This transistor was Designed primarily for application as a high–power linear amplifier from 2.0 to 30 MHz.

Specifications:

• Output power = 100+ Watts
• Minimum gain = 10 dB
• Bias Voltage: 12.5 V
• Efficiency = 40%
• IMD = –30 dB (min.)
• Min Frequency: 1 MHz
• Max Frequency: 30 MHz

Tested for load mismatch at all phase angles with 30:1 VSWR

New Old Stock * No longer available for export
MFR: Motorola
SKU: SRF3662

Transistor 12.5 Volts 100 Watts
Matched Pair (2)
New Old Stock * No longer available for export
MFR: Motorola
SKU: SRF3662MP

The SRF3749 is Premium grade MRF454. This transistor has High Gain selection G or Blue beta or higher. You can use the SRF3749 as direct replacement for any application where MRF454 80 Watt transistor was used. 

New Old Stock * No longer available for export
MFR: Motorola
SKU: SRF3749

The SRF3749 12 Vold Motorola Transistor is a premium grade replacement for the MRF454, 80 Watt transistor. This transistor has High Gain selection G or Blue beta or higher. You can use the SRF3749 as direct replacement for any application where MRF454 was used. 

Matched Pair (2)
New Old Stock * No longer available for export
MFR: Motorola
SKU: SRF3749MP

Transistor 12 Volt Premium Grade Replacement for MRF454 80 Watt (NOS)
New Old Stock * No longer available for export
MFR: Motorola
SKU: SRF3795

Transistor 12V Matched Pair (2) premium grade replacement for MRF454 80 Watt Transistor
The Motorola SRF3795 has High Gain selection G, Blue beta or higher, and it is a premium grade replacement for the MRF454.
New Old Stock * No longer available for export
MFR: Motorola
MFR: SRF3795MP

Transistor 12 Volt is the Premium Grade Replacement for the MRF454 80 Watt   
Matched Quad (4) 
New Old Stock * No longer available for export
MFR: Motorola
SKU: SRF3795MQ

SRF2838 is obsolete and the substitute cross is Toshiba part number 2SC2782.

Originally used in Palomar Electronics Amplifiers, the SRF2072 is rated at 70 Watts and is a High Gain replacement for the MRF455.  

New Old Stock * No longer available for export
MFR:  Motorola
SKU: SRF2072