FDH055N15A N-channel MOSFET — 150V, 118A, 5.9mΩ, TO-247 power MOSFET

The FDH055N15A is a high-performance N-channel power MOSFET in a TO-247 through-hole package, rated at 150V drain-source voltage and 118A continuous drain current. With an exceptionally low on-state resistance of just 5.9mΩ and a maximum power dissipation of 429W, it is engineered for high-efficiency, high-current switching applications where conduction losses must be minimised.

Its low total gate charge (Q_g = 92nC) enables fast switching at high frequencies, making it well-suited for synchronous rectification, motor drives, DC-DC converters, and inverter bridge stages.

Key Specifications:

• Part number: FDH055N15A
• Type: N-channel enhancement-mode power MOSFET
• Drain-source voltage (V_DS): 150V
• Continuous drain current (I_D): 118A @ 25°C
• Maximum power dissipation (P_D): 429W
• On-state resistance (R_DS(on)): 5.9mΩ max
• Gate-source voltage (V_GS): ±20V max
• Gate threshold voltage (V_GS(th)): 4V max
• Total gate charge (Q_g): 92nC
• Maximum junction temperature (T_j): 175°C
• Package: TO-247AC (through-hole, 3-pin)

Key Features:

• Ultra-low R_DS(on) of 5.9mΩ — minimal conduction losses for high-efficiency power conversion
• 118A continuous drain current — handles high-current loads in motor drives and inverter bridges
• 150V V_DS rating — suitable for 48V–96V bus applications with adequate margin
• Low gate charge (92nC) — fast switching capability at high frequencies
• 429W power dissipation — high thermal headroom with proper heatsinking
• TO-247 package — easy heatsink mounting, industry-standard footprint

Applications:

• Synchronous rectification in DC-DC converters
• Motor drive H-bridge and half-bridge stages
• Battery management and charging systems
• DC-AC inverter switching stages
• High-current load switching
• Power factor correction (PFC) circuits

Note: The TO-247 tab is electrically connected to the Drain. Use electrical isolation when mounting to a grounded heatsink. A heatsink is required for operation above low currents. Refer to the FDH055N15A datasheet for gate drive, thermal derating, and safe operating area (SOA) guidelines.