400V 1.8A N-CH MOSFET SOT-223 3.4R Product overview: STN3N40K3 from STMicroelectronics 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 400V, 1.8A. Search-friendly keywords include MOSFET, power transistor, switching, N-channel, P-channel, 400V, 1.8A, 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-STN3N40K3 can be used for catalog matching and distributor lookup.
Manufacturer: STMicroelectronics
Win Source Part Number: 031446-STN3N40K3
Packaging: Reel - TR
Mounting: SMD (SMT)
Technology: MOSFET
Polarity: N-Channel
Power Dissipation (Max): 3.3W (Ta)
Categories: Discrete Semiconductor Products
Drive Voltage (Max Rds On, Min Rds On): 10V
Status: Active
Temperature Range - Operating: -55°C to 150°C (TJ)
Case / Package: SOT-223
Dimension: TO-261-4, TO-261AA
Drain-Source Breakdown Voltage: 400V
Continuous Drain Current at 25°C: 1.8A (Tc)
Gate-Source Threshold Voltage: 4.5V @ 50μA
Max Gate Charge: 11nC @ 10V
Max Input Capacitance: 165pF @ 50V
Maximum Gate-Source Voltage: ±30V
Maximum Rds On at Id,Vgs: 3.4 Ohm @ 600mA, 10V
Is this a common-used part?: Yes
Popularity: High
Fake Threat In the Open Market: 53 pct.
Supply and Demand Status: Balance
N-Channel 400V 1.8A (Tc) 3.3W (Ta) Surface Mount SOT-223
N-Channel 400V 1.8A (Tc) 3.3W (Ta) Surface Mount SOT-223
N-Channel 400V 1.8A (Tc) 3.3W (Ta) Surface Mount SOT-223
MOSFET N-CH 400V 1.8A SOT223
MOSFET Transistor, N Channel, 1.8 A, 400 V, 3 ohm, 10 V, 3.75 V RoHS Compliant: Yes
MOSFET, N CH, 400V, 1.8A, SOT-223; Channel Type:N Channel; Drain Source Voltage Vds:400V; Continuous Drain Current Id:1.8A; Transistor Mounting:Surface Mount; Rds(on) Test Voltage:10V; Gate Source Threshold Voltage Max:3.75V RoHS Compliant: Yes
MOSFET N-CH 400V 1.8A SOT223
MOSFET N-Ch 400V 3.3 Ohm 3A SuperMESH3 3.3W
MOSFET N-CH 400V 1.8A SOT223
| ERSAELECTRONICS PTE. LTD. | RS Components, Ltd. | Win Source Electronics | DigiKey | ODG (Origin Data Global) | Newark, An Avnet Company | Newark, An Avnet Company | Shenzhen Shengyu Electronics Technology Limited | VAST STOCK CO., LIMITED | Utmel Electronic Limited | |
|---|---|---|---|---|---|---|---|---|---|---|
| Product Category | Metal-Oxide Semiconductor FET (MOSFET) | Metal-Oxide Semiconductor FET (MOSFET) | Metal-Oxide Semiconductor FET (MOSFET) | Transistors | Metal-Oxide Semiconductor FET (MOSFET) | Metal-Oxide Semiconductor FET (MOSFET) | Metal-Oxide Semiconductor FET (MOSFET) | RF Transistors | Metal-Oxide Semiconductor FET (MOSFET) | Metal-Oxide Semiconductor FET (MOSFET) |
| Product Number | 278-STN3N40K3 | 151445P | 031446-STN3N40K3 | 497-11222-2-ND | STN3N40K3 | 94T3444 | 47T9395 | STN3N40K3 | STN3N40K3 | 761-STN3N40K3 |
| Product Name | 400V 1.8A MOSFET Transistor | MOSFETs | TRANSISTORS - Transistors - FETs, MOSFETs - RF - STN3N40K3 | Single FETs, MOSFETs | Single FETs, MOSFETs | Mosfet Transistor, N Channel, 1.8 A, 400 V, 3 Ohm, 10 V, 3.75 V Rohs Compliant Stmicroelectronics | Mosfet, N Ch, 400V, 1.8A, Sot-223; Channel Type Stmicroelectronics | Discrete Semiconductor Products - Transistors - FETs, MOSFETs | MOSFET | MOSFET N-CH 400V 1.8A SOT223 |
| Polarity | N-Channel | N-Channel | N-Channel; N-Channel | N-Channel | N-Channel; N-Channel | N-Channel | ||||
| PD | 3300 milliwatts | 3300 milliwatts | 3300 milliwatts | 3300 milliwatts | ||||||
| TJ | -55 C (-67 F) | -55 to 150 C (-67 to 302 F) | -55 to 150 C (-67 to 302 F) | -55 to 150 C (-67 to 302 F) | ||||||
| Package Type | SOT223; SOT-223 | SOT3; SOT-223 | SOT223; TO-261-4, TO-261AA | SOT223; TO-261-4, TO-261AA | TO-3 | TO-3; SOT223 | Surface Mount | |||
| V(BR)DSS | 400 volts | 400 volts | 400 volts |
