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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Nexperia USA Inc. BUK9628-100A,118

Name: BUK9628-100A,118
Brand: Nexperia USA Inc.
SKU: BUK9628-100A,118
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BUK9628-100A,118

Manufacturer:: Nexperia USA Inc.

Category:: FETs, MOSFETs

Package:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Datasheet:: BUK9628-100A,118.pdf

Description:: MOSFET N-CH 100V 49A D2PAK

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Product details

Overview

BUK9628-100A from Nexperia is a logic-level N-channel TrenchMOS FET in D2PAK (SOT404) package, designed for automotive-critical power switching. It delivers 100 V drain-source voltage rating, 49 A continuous drain current at T_mb = 25 °C, and 17–28 mΩ R_DS(on) at V_GS = 5–10 V and T_j = 25 °C, enabling efficient high-current DC/DC and motor control in engine management systems.

For engineers reviewing the BUK9628-100A datasheet, BUK9628-100A pinout, BUK9628-100A application, or BUK9628-100A equivalent, key selection criteria include AEC-Q101 qualification, low R_DS(on) at 5 V gate drive, avalanche ruggedness (45 mJ), thermal resistance (0.9 K/W j-mb), and D2PAK mounting-base thermal interface compatibility.

Technical Context

This device employs TrenchMOS technology to achieve low conduction losses and stable threshold voltage across temperature (V_GS(th) = 0.5–2.3 V). Its gate threshold is optimized for direct microcontroller GPIO drive without level-shifting, supporting 5 V logic-compatible switching in safety-critical automotive subsystems.

The integrated source-drain diode exhibits 0.85–1.2 V forward voltage at 25 A and 25 °C, with 63 ns reverse recovery time and 0.22 µC recovered charge-enabling use in freewheeling and synchronous rectification topologies where body diode performance impacts efficiency.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	100 V - Maximum blocking voltage compatible with 42 V automotive systems and transient surge protection up to ISO 7637-2 Pulse 5a.
I_D (continuous)	49 A at T_mb = 25 °C - Supports high-power loads such as radiator fans, fuel pumps, and HVAC blowers without external heatsink under nominal conditions.
R_DS(on)	18.5 mΩ typ. at V_GS = 5 V, I_D = 25 A, T_j = 25 °C - Enables <1 W conduction loss at 25 A, critical for thermally constrained under-hood modules.
E_AS	45 mJ unclamped avalanche energy - Withstands inductive kickback from solenoids and motors without external snubbers in fault-tolerant designs.
R_th(j-mb)	0.9 K/W - Direct thermal path from die to mounting base allows >150 W dissipation with minimal ΔT when bolted to chassis or heatsink.
V_GS(th)	1.5 V typ. at T_j = 25 °C - Ensures reliable turn-on with standard 3.3 V or 5 V MCU outputs, eliminating need for gate drivers in many applications.
C_iss	3220 pF typ. - Low input capacitance reduces gate drive power and enables fast switching (t_d(on) = 11 ns) for PWM frequencies up to 100 kHz.

Pinout & Package

Package: SOT404 (D2PAK), plastic single-ended surface-mounted package with isolated mounting base electrically connected to drain. Features 3 leads (one cropped), optimized for high-current PCB mounting and thermal transfer via backside metal tab.

Pin/Terminal	Circuit Role	Design Meaning
1 (G)	Gate	Control terminal accepting 5 V logic-level signals; requires <100 nA leakage current at ±10 V, enabling direct MCU interface.
2 (D)	Drain	Main high-side power terminal; internally bonded to mounting base for low-inductance, high-current return path and thermal conduction.
3 (S)	Source	Power return node; referenced to system ground in low-side switch configurations; supports 49 A continuous current flow.
Mounting Base (mb)	Drain extension	Electrically tied to drain pin; provides mechanical attachment and primary thermal interface-must be soldered or bolted to copper pour or heatsink.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22-A114, ensuring operation over -55 °C to +175 °C junction range.
Logic-level gate drive	Turns fully on with V_GS ≥ 5 V, eliminating external level shifters and reducing BOM count in battery management and ADAS power stages.
Low R_DS(on) at 5 V	18.5 mΩ typical enables <1.2 W conduction loss at 25 A-critical for minimizing thermal stress in sealed ECUs.
Unclamped avalanche rated	45 mJ energy handling allows safe operation during inductive load interruption without snubber circuits in starter relays and valve drivers.
Optimized D2PAK thermal interface	0.9 K/W junction-to-mounting-base resistance supports >150 W power dissipation when mounted to 10 cm² copper area, simplifying thermal design.

Applications

Engine Control Unit (ECU) Fuel Injector Driver

Automotive HVAC Blower Motor Control

Use Scenario: High-speed, pulse-width modulated switching of 12 V fuel injectors in gasoline direct injection systems.

IC Role / Device Role / Timing Role: Low-side power switch controlling injector coil current with precise 1–5 ms on-time resolution.

Use Value: 18.5 mΩ R_DS(on) minimizes coil heating during extended duty cycles; 45 mJ avalanche rating absorbs inductive flyback without clamping diodes.

Use Scenario: Variable-speed control of 400 W cabin blower motor using PWM-driven high-side configuration.

IC Role / Device Role / Timing Role: High-side switch interfaced with dedicated gate driver IC (e.g., UCC27531) for 20 kHz PWM operation.

Use Value: 100 V V_DS withstands load dump transients; 0.9 K/W R_th(j-mb) enables passive cooling on compact PCB layout.

12 V Battery Disconnect Switch

Electric Power Steering (EPS) Motor Phase Leg

Use Scenario: Solid-state replacement for mechanical contactor in 12 V battery isolation for start-stop systems.

IC Role / Device Role / Timing Role: Bidirectional current-blocking switch activated during engine cranking or fault conditions.

Use Value: AEC-Q101 qualification ensures reliability over 10-year vehicle life; 49 A I_D supports peak cranking currents up to 300 A (pulsed).

Use Scenario: Half-bridge phase leg in 3-phase EPS motor inverter operating at 10–20 kHz switching frequency.

IC Role / Device Role / Timing Role: Low-side switch in IGBT/MOSFET hybrid inverter stage, synchronized with complementary high-side device.

Use Value: 63 ns t_rr and 0.22 µC Q_r reduce cross-conduction losses; 3220 pF C_iss enables clean gate drive with minimal overshoot.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STL220N10F7	100 V, 220 A, 3.8 mΩ R_DS(on) at V_GS = 10 V; not logic-level (V_GS(th) = 2.5–4.5 V); DFN5x6 package.	Requires gate driver for full enhancement; better suited for high-current, space-constrained inverters-not drop-in for 5 V GPIO drive.	Select only if gate drive voltage ≥10 V is available and thermal interface permits DFN mounting.
IRF1405ZPBF	55 V, 169 A, 5.3 mΩ R_DS(on) at V_GS = 10 V; non-AEC qualified; TO-220 package.	Lacks automotive qualification and avalanche rating; unsuitable for safety-critical systems; higher V_DS margin required for 12 V systems.	Acceptable only for non-automotive industrial power supplies where AEC compliance is not mandated.

Compared with STL220N10F7 and IRF1405ZPBF, BUK9628-100A uniquely combines AEC-Q101 qualification, true 5 V logic-level operation, and D2PAK thermal performance-making it the only viable choice for cost-sensitive, MCU-driven automotive power switches requiring zero gate driver overhead and robust transient immunity.

Availability

BUK9628-100A is available at Aetrix Electronics and suitable for automotive engine control, HVAC actuation, and battery management systems requiring stable component supply across multi-year vehicle production cycles.

Supply support for BUK9628-100A 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 discrete and logic devices, with leadership in automotive-qualified MOSFETs and ESD protection solutions.

The BUK9628-100A belongs to Nexperia's TrenchMOS automotive logic-level FET product line, engineered specifically for replacing electromechanical relays and discrete transistor arrays in 12 V/42 V power distribution modules.

FAQ

Is BUK9628-100A suitable for high-side switching configurations?

Yes-it supports high-side operation when paired with a dedicated gate driver (e.g., NCV8405) that provides V_GS ≥ 5 V referenced to the drain potential. The D2PAK mounting base is electrically connected to drain, so thermal interface must be isolated from system ground in high-side layouts.

What is the maximum pulsed drain current (I_DM) and under what conditions is it valid?

The peak drain current is 195 A at T_mb = 25 °C with pulsed operation (duty cycle ≤1%). This rating assumes short-duration pulses (tp ≤ 10 ms) and proper thermal management; sustained operation above 49 A requires derating based on mounting base temperature per Figure 2.

Does BUK9628-100A require external gate resistors for EMI control?

A gate resistor of 10 Ω is recommended (per datasheet test condition) to limit dI/dt and suppress ringing during switching. Lower values increase EMI risk; higher values slow switching and raise dynamic losses-optimal value depends on layout parasitics and target PWM frequency (typically 5–22 Ω for 20 kHz operation).

Can BUK9628-100A replace mechanical relays in automotive lighting circuits?

Yes-its 49 A continuous rating, 100 V blocking capability, and AEC-Q101 qualification make it suitable for headlamp, fog lamp, and daytime running light (DRL) control. Use with TVS protection (e.g., P6SMB15CA) is advised to handle load dump transients per ISO 7637-2.

BUK9628-100A,118 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: TrenchMOS™

Package/Case:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 100 V

Current - Continuous Drain (Id) @ 25°C:: 49A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 5V, 10V

Rds On (Max) @ Id, Vgs:: 27mOhm @ 25A, 10V

Vgs(th) (Max) @ Id:: 2V @ 1mA

Gate Charge (Qg) (Max) @ Vgs:: -

Vgs (Max):: ±10V

Input Capacitance (Ciss) (Max) @ Vds:: 4293 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 166W (Tc)

Operating Temperature:: -55°C ~ 175°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: D2PAK

BUK9628-100A,118 FAQ

1.How can I place an order for BUK9628-100A,118 through Aetrix?

Please submit a Request for Quotation (RFQ) for BUK9628-100A,118 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for BUK9628-100A,118 reliable?

The price and inventory of BUK9628-100A,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK9628-100A,118 is usually 5 days.

3.What payment methods are accepted for BUK9628-100A,118?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK9628-100A,118 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BUK9628-100A,118?

BUK9628-100A,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BUK9628-100A,118 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for BUK9628-100A,118?

For technical support, including BUK9628-100A,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK9628-100A,118 requirements.

6.How does Aetrix verify that BUK9628-100A,118 is sourced from the original manufacturer or authorized distributors?

All BUK9628-100A,118 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BUK9628-100A,118 meets industry standards.

7.What is the process for return or replacement of BUK9628-100A,118?

All BUK9628-100A,118 units undergo pre-shipment inspection (PSI). If there is an issue with BUK9628-100A,118, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The BUK9628-100A,118 part is unused and in its original packaging.

Return procedure for BUK9628-100A,118:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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