Nexperia USA Inc. BUK9207-30B,118

Overview

BUK9207-30B from Nexperia is a logic-level N-channel TrenchMOS FET in DPAK (SOT428) package, rated for 30 V drain-source voltage, 75 A continuous drain current at 25 °C mounting base temperature, and 167 W total power dissipation. It features 4.4 mΩ typical R_DS(on) at V_GS = 10 V and 25 °C, supports 185 °C junction operation, and is AEC-Q101 qualified for automotive critical loads including motors, lamps, and solenoids.

For engineers reviewing the BUK9207-30B datasheet, BUK9207-30B pinout, BUK9207-30B application, or BUK9207-30B equivalent, key selection criteria include logic-level gate drive compatibility (V_GS(th) ≤ 2.3 V), thermally robust 185 °C rating, low R_DS(on) under 5 V drive, avalanche energy of 329 mJ, and DPAK package thermal resistance of 0.95 K/W to mounting base.

Technical Context

This device employs TrenchMOS technology to achieve low on-resistance and high avalanche ruggedness. Its gate threshold voltage ranges from 0.4 V at 185 °C to 2.3 V at –55 °C, enabling reliable turn-on across automotive temperature extremes with standard 5 V logic drivers.

The integrated source-drain diode exhibits 0.85 V forward voltage at 25 A and 25 °C, with 55 ns reverse recovery time and 42 nC recovered charge - characteristics optimized for inductive load switching without external freewheeling diodes in many 12 V systems.

Key Specifications

Pinout & Package

Package: SOT428 (DPAK), plastic single-ended surface-mounted package with 3 leads (lead 2 cropped); mounting base (mb) electrically connected to drain and serves as primary thermal path.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel logic-level power MOSFET applications.

Compared with STL220N3LLH6, BUK9207-30B offers superior thermal interface via DPAK mounting base but lower peak current; versus IRLR024NPBF, it delivers 4.4× lower R_DS(on) and 4.4× higher continuous current in a surface-mount package, making it optimal for space-constrained, thermally demanding automotive 12 V switching.

Availability

BUK9207-30B is available at Aetrix Electronics and suitable for automotive body control modules, 12 V brushed DC motor drives, and solenoid actuation systems requiring stable component supply across extended temperature and lifecycle requirements.

Supply support for BUK9207-30B includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert specializing in high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and advanced packaging.

The BUK9207-30B belongs to Nexperia's TrenchMOS logic-level power MOSFET product line, engineered specifically for robust, low-loss 12 V automotive power switching where thermal resilience and AEC-Q101 compliance are mandatory.

FAQ

Is BUK9207-30B suitable for high-frequency PWM motor control?

Yes - with 100 ns turn-off delay and 107 ns fall time, it supports PWM frequencies up to 20 kHz in brushed DC motor applications. Its 12 nC gate-drain charge and 31 nC total gate charge enable efficient switching using standard 5 V MCU GPIOs with ≤10 Ω series gate resistance, minimizing switching losses while maintaining EMI control.

What is the maximum continuous current at 100 °C mounting base temperature?

At T_mb = 100 °C, the continuous drain current remains 75 A per Figure 1 in the datasheet - identical to the 25 °C rating - because current is package-limited, not silicon-limited. Derating begins only above 100 °C due to thermal resistance constraints, not electrical limitations.

Does the mounting base require electrical isolation from the heatsink?

No - the mounting base is electrically connected to the drain terminal (pin 2), so isolation is required only if the heatsink is at a different potential than the drain node. In low-side switch configurations, the heatsink must be isolated; in high-side configurations, it may be tied to the drain rail, simplifying thermal design.

Can BUK9207-30B replace older BUK9207-30A parts in existing designs?

Yes - the BUK9207-30B is a direct replacement for BUK9207-30A with identical pinout, package, and electrical specifications. The revision update (Rev. 03, 2010) reflects documentation improvements and updated qualification data, with no changes to device functionality, ratings, or layout compatibility.