Product Overview
Fairchild IRFP140A 100V 31A N-Channel Power MOSFET TO-247 Package
Condition
Unused new old stock (NOS). Clean straight through-hole leads with no solder residue. Face markings legible: Fairchild logo, IRFP140A, G47.
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Product Overview
Fairchild IRFP140A N-channel enhancement mode power MOSFET housed in a standard TO-247 through-hole package. Built for high-current switching and linear power regulation across industrial, automotive, and audio applications.
Key Features
- Drain-Source Voltage (V_DSS): 100 V
- Continuous Drain Current (I_D): 31 A
- Static Drain-Source On-Resistance (R_DS(on)): 0.052 Ω
- Total Gate Charge (Q_g): 60 nC
- Mounting: Through-hole, TO-247 package with center mounting hole
- Pin configuration: Pin 1 Gate, Pin 2 Drain, Pin 3 Source (Drain connected to mounting tab)
Applications
- Replacing failed output FETs in vintage audio power amplifiers and linear power stages.
- Servicing DC motor drives, PWM controllers, and low-voltage inverter circuits on the repair bench.
- Building custom solid-state switches, solar charge controllers, and DIY electronic bench loads.
Frequently Asked Questions
What is the pinout for this TO-247 package?
Looking at the marked front face with leads pointing downward, Pin 1 is Gate, Pin 2 is Drain, and Pin 3 is Source. The metal mounting tab connects electrically to Drain (Pin 2).
Can this part directly replace a standard IRFP140 in existing circuit boards?
Yes. The IRFP140A shares the identical TO-247 footprint, pinout configuration, and 100V drain-source voltage rating as standard IRFP140 devices.
Built when solid silicon and robust TO-247 packages handled real current without compromise. Drop it in your circuit and get the power stage back to work.
