NXP Semiconductors BUK98180-100A,115

Overview

BUK98180-100A from Nexperia is an AEC-Q101-qualified N-channel TrenchMOS logic-level power MOSFET in SC-73 (SOT223) package, rated for 100 V drain-source voltage, 4.6 A continuous drain current at 5 V gate drive, and 8 W total power dissipation at 25 °C solder point temperature. It delivers low on-state resistance of 153–180 mΩ at V_GS = 5 V and T_j = 25 °C, enabling efficient 12 V/24 V automotive load switching.

For engineers reviewing the BUK98180-100A datasheet, BUK98180-100A pinout, BUK98180-100A application, or BUK98180-100A equivalent, key selection considerations include its Q101 qualification, logic-level gate drive compatibility (V_GS(th) = 0.6–2.3 V), avalanche ruggedness (16 mJ), thermal resistance to solder point (15 K/W), and suitability for automotive solenoid/motor control where robustness and low gate-drive voltage are critical.

Technical Context

This device uses TrenchMOS technology to achieve low R_DS(on) while maintaining stable threshold voltage across temperature (V_GS(th) = 0.6 V min at 150 °C). Its gate threshold is specified down to -55 °C and up to 150 °C, supporting wide-temperature automotive operation.

The BUK98180-100A features integrated source-drain diode with V_SD = 0.85–1.2 V at 5 A and reverse recovery time t_rr = 49 ns, enabling use in inductive load switching without external freewheeling diodes in many cases. Its safe operating area supports peak drain current of 18 A for pulses ≤10 µs.

Key Specifications

Pinout & Package

BUK98180-100A is housed in a plastic surface-mounted SC-73 (SOT223) package with increased heatsink capability and four leads. The package features exposed drain pads on pins 2 and 4 for enhanced thermal performance and mechanical stability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STP4NK60ZFP and IRLML6344TRPBF, the BUK98180-100A uniquely balances 100 V rating, 4.6 A current, AEC-Q101 compliance, and SOT223 thermal performance-making it the only option among the three suitable for mainstream automotive body electronics requiring both robustness and logic-level drive.

Availability

BUK98180-100A is available at Aetrix Electronics and suitable for automotive body control modules, 12 V/24 V motor drives, and industrial solenoid control requiring stable component supply across extended production lifecycles.

Supply support for BUK98180-100A 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 focused on high-volume, high-reliability essential semiconductors for automotive, industrial, and consumer markets.

The BUK98180-100A belongs to Nexperia's TrenchMOS logic-level FET product line, engineered specifically for automotive power switching applications demanding AEC-Q101 qualification, low gate-threshold voltage, and rugged avalanche performance.

FAQ

What is the maximum continuous drain current for BUK98180-100A at 100 °C solder point temperature?

The BUK98180-100A supports 3 A continuous drain current at T_sp = 100 °C and V_GS = 5 V, as specified in the Limiting Values table. This derating reflects thermal constraints of the SC-73 package under elevated ambient conditions and must be accounted for in thermal design using the normalized current curve (Figure 2) and R_th(j-sp) = 15 K/W.

Is BUK98180-100A suitable for 3.3 V microcontroller gate drive?

Yes, BUK98180-100A is explicitly designed for logic-level gate drive and turns on fully at V_GS = 4.5 V. Its gate threshold voltage ranges from 0.6 V to 2.3 V across temperature, ensuring reliable enhancement-mode operation with 3.3 V GPIO outputs without external level-shifting circuitry.

Does BUK98180-100A have an integrated body diode, and what are its key parameters?

Yes, BUK98180-100A includes an integrated source-drain diode characterized with forward voltage V_SD = 0.85–1.2 V at 5 A and reverse recovery time t_rr = 49 ns. These values enable effective freewheeling in inductive load applications such as solenoids and DC motors without requiring external diodes in most designs.

What is the avalanche energy rating of BUK98180-100A, and under what conditions is it tested?

The BUK98180-100A has a non-repetitive drain-source avalanche energy rating E_DS(AL)S = 16 mJ, measured under conditions of I_D = 4 A, V_sup ≤ 100 V, R_GS = 50 Ω, V_GS = 5 V, and initial junction temperature T_j(init) = 25 °C in unclamped inductive switching tests.

How does the thermal resistance of BUK98180-100A compare between junction-to-solder-point and junction-to-ambient?

BUK98180-100A specifies R_th(j-sp) = 15 K/W (typical) for junction-to-solder-point, reflecting efficient heat transfer to PCB copper pours, versus R_th(j-a) = 120 K/W (typical) for junction-to-ambient-highlighting that thermal performance depends critically on PCB layout and copper area, not just ambient conditions.