Alpha & Omega Semiconductor, Ltd. Single FETs, MOSFETs AOI4185

P-Channel 40V 40A (Tc) 2.5W (Ta), 62.5W (Tc) Through Hole TO-251A

Manufacturer: Alpha & Omega Semiconductor Inc.
Win Source Part Number: 078155-AOI4185
Packaging: Tube/Rail
Mounting: Through Hole
Technology: MOSFET
Polarity: P-Channel
Power Dissipation (Max): 2.5W (Ta), 62.5W (Tc)
Categories: Discrete Semiconductor Products
Drive Voltage (Max Rds On, Min Rds On): 4.5V, 10V
Status: Active
Temperature Range - Operating: -55°C to 175°C (TJ)
Case / Package: TO-251A
Dimension: TO-251-3 Stub Leads, IPak
Drain-Source Breakdown Voltage: 40V
Continuous Drain Current at 25°C: 40A (Tc)
Gate-Source Threshold Voltage: 3V @ 250μA
Max Gate Charge: 55nC @ 10V
Max Input Capacitance: 2550pF @ 20V
Maximum Gate-Source Voltage: ±20V
Maximum Rds On at Id,Vgs: 15 mOhm @ 20A, 10V
Popularity: Medium
Fake Threat In the Open Market: 75 pct.
Supply and Demand Status: Balance

MOSFET P-CH 40V 40A TO251A Product overview: AOI4185 from Alpha and Omega Semiconductor, Inc. is a MOSFET Transistor for power switching, load control, motor drives, DC-DC converters, battery systems, and board-level power design. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include 40V, 40A. Search-friendly keywords include MOSFET, power transistor, switching, N-channel, P-channel, 40V, 40A, MOSFET Transistor, Single FETs, MOSFETs. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 278-AOI4185 can be used for catalog matching and distributor lookup.