MRF377HR3

Overview

The MRF377HR3 is an N-channel enhancement-mode lateral MOSFET designed for broadband commercial and industrial applications in the 470 to 860 MHz frequency range. It features a drain-source voltage of 65 Vdc, continuous drain current of 17 Adc, and total device dissipation of 648 W at 25°C case temperature. The component delivers 45 Watts average output power with a minimum power gain of 16.5 dB and drain efficiency of 21% under DVBT OFDM conditions. For ATSC 8VSB performance, it provides 80 Watts average output power with a gain of 16.5 dB and efficiency of 27.5%. It utilizes the NI-860C3 package.

Feature Summary

• Designed specifically for push-pull operation configurations
• Internally matched input and output networks for ease of use
• Integrated electrostatic discharge (ESD) protection
• Characterized using series equivalent large-signal impedance parameters

Applications

• Large-signal common source amplifier applications in 32 volt digital television transmitter equipment
• Broadband commercial applications operating between 470 and 860 MHz
• Industrial applications requiring high gain and broadband performance

Procurement Notes

Verify that the specific ordering suffix HR3 corresponds to the tape and reel packaging containing 250 units per 56 mm, 13 inch reel. Confirm compliance with RoHS directives as indicated in the datasheet. Ensure the procurement matches the exact Freescale Semiconductor part number to avoid discrepancies with similar variants like the HR5.

Selection Notes

Select this component when designing balanced push-pull amplifier circuits within the 470 to 860 MHz spectrum. It is suitable for systems requiring 32 volt DC supply rails. Designers must account for its internal matching characteristics and utilize the provided series equivalent large-signal impedance parameters for accurate circuit simulation and implementation.

Part Context

This device belongs to the RF Power Field-Effect Transistor family from Freescale Semiconductor. It is categorized as an N-channel enhancement-mode Lateral MOSFET. The product documentation indicates a transition period involving Motorola and Freescale markings on associated printed circuit boards, though this does not affect the component's form, fit, or function.

Replacement Considerations

The MRF377HR5 is identified as a related variant within the same product family. Refer to PCN13170 regarding the removal of the HR5 from the primary data sheet revision. Verify if the HR5 serves as a direct functional substitute based on specific packaging requirements.

FAQ

Is the MRF377HR3 designed for single-ended operation?

No, the device is explicitly designed for push-pull operation only.

What is the maximum gate-source voltage rating?

The maximum Gate-Source Voltage (VGS) rating is -0.5 to +15 Vdc.

Does the component include ESD protection?

Yes, the MRF377HR3 includes integrated electrostatic discharge (ESD) protection characterized by Human Body Model Class 1 and Machine Model M3 minimum ratings.