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Product Detailed Parameters
- Description：MOSFET N-CH 40V 8A/19A 6DFN
- Series：TrenchMOS™
- Mfr：Nexperia USA Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- FET Type：N-Channel
- Technology：MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss)：40 V
- Current - Continuous Drain (Id) @ 25°C：8A (Ta), 19A (Tc)
- Drive Voltage (Max Rds On, Min Rds On)：4.5V, 10V
- Rds On (Max) @ Id, Vgs：23mOhm @ 8A, 10V
- Vgs(th) (Max) @ Id：2.7V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs：19 nC @ 10 V
- Vgs (Max)：±20V
- Input Capacitance (Ciss) (Max) @ Vds：582 pF @ 20 V
- FET Feature：-
- Power Dissipation (Max)：2.3W (Ta), 15W (Tc)
- Operating Temperature：-55°C ~ 175°C (TJ)
- Grade：Automotive
- Qualification：AEC-Q101
- Mounting Type：Surface Mount
- Supplier Device Package：DFN2020MD-6
- Package / Case：6-UDFN Exposed Pad
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Overview
The Nexperia BUK6D23-40EX is an N-channel enhancement mode Field-Effect Transistor utilizing Trench MOSFET technology. It is housed in a DFN2020MD-6 (SOT1220) surface-mount package measuring 2 x 2 x 0.65 mm. The device supports a drain-source voltage of 40 V and a continuous drain current of 19 A at 25 °C. Key electrical parameters include a maximum on-state resistance of 23 mΩ, a gate-source threshold voltage of 1.3 V to 2.7 V, and a total power dissipation of 15 W. It operates within a junction temperature range of -55 °C to +175 °C.
Feature Summary
- AEC-Q101 qualified for automotive reliability standards
- Side wettable flanks enable optical solder joint inspection
- Extended thermal capability with a maximum junction temperature of 175 °C
- Trench MOSFET technology provides low on-state resistance
Applications
- Relay driver circuits
- High-speed line drivers
- Low-side load switching
- General-purpose switching applications
Procurement Notes
Verify the specific suffix 'EX' against the official Nexperia ordering information to confirm packaging details such as reel specifications or tape-and-reel dimensions. Ensure the component matches the DFN2020MD-6 package outline and that the marking code corresponds to the correct type number before finalizing procurement orders.
Selection Notes
Select this component when a compact SMD solution with high current handling is required. The 40 V rating and 19 A capacity suit low-voltage power management tasks. Verify that the PCB footprint accommodates the 2 x 2 mm body size and that thermal design accounts for the specified thermal resistance values under expected operating conditions.
Part Context
This part belongs to the Nexperia BUK6D series of N-channel Trench MOSFETs. These devices are engineered for medium-power applications requiring small footprints. The DFN2020MD-6 package offers enhanced thermal performance compared to standard plastic packages, making it suitable for space-constrained designs in consumer and automotive electronics.
Replacement Considerations
Direct substitutes must match the 40 V rating, N-channel configuration, and DFN2020MD-6 package. Verify pinout compatibility and ensure equivalent RDS(on) and thermal characteristics. Cross-reference with Nexperia's replacement guide for validated alternatives.
