Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Nexperia USA Inc. BUK6217-55C,118

Name: BUK6217-55C,118
Brand: Nexperia USA Inc.
SKU: BUK6217-55C,118
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: BUK6217-55C,118

Manufacturer:: Nexperia USA Inc.

Category:: FETs, MOSFETs

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: BUK6217-55C,118.pdf

Description:: MOSFET N-CH 55V 44A DPAK

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,543

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

BUK6217-55C,118 from Nexperia is an AEC-Q101-qualified N-channel TrenchMOS FET in DPAK (SOT428) package, designed for automotive power switching with 55 V V_DS, 44 A I_D (T_mb = 25 °C), 16 mΩ R_DS(on) @ 10 V, and 175 °C junction rating - deployed in electric power steering, start-stop micro-hybrid systems, and transmission control.

For engineers reviewing the BUK6217-55C,118 datasheet, BUK6217-55C,118 pinout, BUK6217-55C,118 application, or BUK6217-55C,118 equivalent, this part supports thermally demanding 12 V/24 V automotive loads requiring intermediate-level gate drive compatibility, unclamped avalanche ruggedness (45 mJ), and mounting-base thermal management (R_th(j-mb) = 1.87 K/W).

Technical Context

This device uses advanced TrenchMOS technology to achieve low R_DS(on) while maintaining robust avalanche performance and wide gate drive flexibility (V_GS(th) = 1.8–2.8 V at 25 °C). Its DPAK package integrates the mounting base directly to the drain, enabling high-current conduction and efficient heat transfer to the PCB heatsink.

The FET supports both standard (10 V) and logic-level (4.5–5 V) gate drive sources, with dynamic parameters including Q_GD = 11.2 nC and C_iss = 1453 pF (typ.) - optimized for fast switching in motor and solenoid control where EMI and turn-off energy must be tightly managed.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	55 V - maximum drain-source blocking voltage for 12 V/24 V automotive bus protection
I_D	44 A @ T_mb = 25 °C - continuous current capability with PCB heatsinking
R_DS(on)	16 mΩ @ V_GS = 10 V, I_D = 12 A, T_j = 25 °C - low conduction loss enabling <1 W dissipation at 25 A
E_DS(AL)S	45 mJ - unclamped single-pulse avalanche energy at I_D = 44 A, supporting inductive load turn-off without external snubbers
R_th(j-mb)	1.87 K/W - thermal resistance from junction to mounting base, enabling >60 W sustained power with proper heatsinking
V_GS(th)	1.8–2.8 V @ T_j = 25 °C - enables reliable turn-on with 3.3 V or 5 V microcontroller outputs
Q_GD	11.2 nC - gate-drain charge determining Miller plateau duration and switching loss in hard-switched topologies

Pinout & Package

DPAK (SOT428) plastic surface-mount package with integral mounting base connected to drain; requires solder pad thermal relief and mechanical anchoring per JEDEC MS-012 standards.

Pin/Terminal	Circuit Role	Design Meaning
1 (G)	Gate	Control terminal accepting 0–16 V DC or pulsed gate drive; low input capacitance (C_iss = 1453 pF) reduces driver loading
2 (D)	Drain	Main high-side power terminal; electrically tied to mounting base for direct PCB thermal path
3 (S)	Source	Power return node; referenced to gate drive ground; internal source inductance = 7.5 nH affects high-dI/dt ringing
Mounting Base (mb)	Drain Extension	Exposed copper pad soldered to PCB thermal plane; carries full drain current and dissipates >90% of heat

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive underhood use up to 175 °C junction temperature with lifetime reliability testing
Intermediate gate drive compatibility	Operates reliably with both 5 V logic-level and 10 V standard gate drivers - no level-shifting required
Thermal robustness	175 °C max junction temperature and 1.87 K/W R_th(j-mb) enable operation in engine bay environments without forced cooling
Unclamped avalanche rating	45 mJ single-pulse energy handling allows safe interruption of inductive motor/solenoid currents without external clamping
Low R_DS(on) at elevated temperature	R_DS(on) ≤ 42 mΩ @ T_j = 175 °C ensures stable on-state performance across full automotive temperature range

Applications

Electric Power Steering (EPS)

Start-Stop Micro-Hybrid Systems

Use Scenario: High-reliability MOSFET switching in 12 V EPS motor phase legs, enduring vibration, thermal cycling, and transient overvoltages.

IC Role / Device Role / Timing Role: Low-side or high-side power switch controlling brushed or BLDC motor current with precise PWM timing.

Use Value: 45 mJ avalanche ruggedness prevents failure during motor back-EMF spikes; 16 mΩ R_DS(on) minimizes resistive heating in compact EPS housings.

Use Scenario: Controlling starter motor engagement and battery isolation in 12 V start-stop systems with frequent cold cranking cycles.

IC Role / Device Role / Timing Role: Main battery disconnect switch activated by vehicle ECU during engine stop/start transitions.

Use Value: 44 A continuous current rating supports peak cranking loads; AEC-Q101 qualification ensures longevity under repeated thermal stress.

Transmission Control Solenoids

12 V/24 V Lamp Drivers

Use Scenario: Driving electro-hydraulic transmission solenoids requiring precise current regulation and fast response.

IC Role / Device Role / Timing Role: PWM-controlled power switch modulating solenoid current for gear shift actuation timing.

Use Value: Low Q_GD (11.2 nC) enables clean turn-off edges critical for accurate current control; 175 °C rating accommodates under-transmission-pan placement.

Use Scenario: Switching high-intensity LED headlamps or incandescent cabin lighting in automotive body control modules.

IC Role / Device Role / Timing Role: High-side or low-side load switch managing steady-state and inrush current for lighting loads.

Use Value: Logic-level gate compatibility (V_GS(th) down to 1.8 V) allows direct MCU GPIO drive; integrated source-drain diode handles inductive kickback from filament lamps.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STL220N4L5AG	40 V V_DS, 220 A I_D, TO-263 package, lower R_DS(on) (1.5 mΩ), but not AEC-Q101 qualified	Targeted at industrial motor drives, not automotive underhood use	Select only for non-automotive 12 V systems requiring higher current and lower conduction loss
IRF1404ZPBF	40 V V_DS, 195 A I_D, TO-220 package, R_DS(on) = 3.7 mΩ, no AEC-Q101 certification	Designed for commercial power supplies and UPS, lacks automotive thermal and reliability validation	Use only in cost-sensitive non-automotive applications where AEC-Q101 compliance is not required

Compared with STL220N4L5AG and IRF1404ZPBF, BUK6217-55C,118 trades peak current capacity for AEC-Q101 qualification, 55 V rating, and DPAK thermal integration - making it uniquely suitable for space-constrained, safety-critical automotive power nodes where reliability trumps raw current density.

Availability

BUK6217-55C,118 is available at Aetrix Electronics and suitable for electric power steering, start-stop micro-hybrid systems, and transmission control requiring stable component supply, long-term automotive lifecycle support, and traceable sourcing.

Supply support for BUK6217-55C,118 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.

This part belongs to Nexperia's TrenchMOS automotive power portfolio, engineered specifically for thermally aggressive vehicle subsystems requiring AEC-Q101 compliance, robust avalanche behavior, and seamless integration into DPAK-based PCB layouts.

FAQ

Is BUK6217-55C,118 suitable for high-side switching configurations?

Yes - its DPAK package features a mounting base internally connected to the drain, enabling direct high-side placement on heatsinked PCB areas. Gate drive must be referenced to the source, requiring either isolated gate drivers or level-shifted control signals when used above ground potential.

What is the maximum allowable gate-source voltage for continuous operation?

The absolute maximum DC V_GS is ±16 V per the datasheet limiting values table. Operation beyond this risks permanent gate oxide damage. For reliable long-term use, keep V_GS ≤ ±12 V, especially at elevated temperatures where leakage increases.

Does BUK6217-55C,118 include an integrated body diode, and what are its characteristics?

Yes - it has a built-in source-drain diode with V_SD = 0.9–1.2 V at I_S = 25 A and T_j = 25 °C, and t_rr = 43 ns. This diode supports freewheeling in inductive loads but is not optimized for high-frequency synchronous rectification due to moderate recovery charge (Q_r = 70 nC).

How does thermal performance change when mounted on a 2-layer versus 4-layer PCB?

R_th(j-mb) remains fixed at 1.87 K/W, but system-level R_th(j-a) improves significantly with 4-layer boards: adding internal copper planes and thermal vias can reduce total junction-to-ambient resistance by 30–50%, enabling ~20% higher continuous current at same ambient temperature.

BUK6217-55C,118 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: TrenchMOS™

Package/Case:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 55 V

Current - Continuous Drain (Id) @ 25°C:: 44A (Tc)

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

Rds On (Max) @ Id, Vgs:: 19mOhm @ 12A, 10V

Vgs(th) (Max) @ Id:: 2.8V @ 1mA

Gate Charge (Qg) (Max) @ Vgs:: 33.8 nC @ 10 V

Vgs (Max):: ±16V

Input Capacitance (Ciss) (Max) @ Vds:: 1950 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 80W (Tc)

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: DPAK

BUK6217-55C,118 FAQ

1.How can I place an order for BUK6217-55C,118 through Aetrix?

Please submit a Request for Quotation (RFQ) for BUK6217-55C,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 BUK6217-55C,118 reliable?

The price and inventory of BUK6217-55C,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK6217-55C,118 is usually 5 days.

3.What payment methods are accepted for BUK6217-55C,118?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK6217-55C,118 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BUK6217-55C,118?

BUK6217-55C,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BUK6217-55C,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 BUK6217-55C,118?

For technical support, including BUK6217-55C,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK6217-55C,118 requirements.

6.How does Aetrix verify that BUK6217-55C,118 is sourced from the original manufacturer or authorized distributors?

All BUK6217-55C,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 BUK6217-55C,118 meets industry standards.

7.What is the process for return or replacement of BUK6217-55C,118?

All BUK6217-55C,118 units undergo pre-shipment inspection (PSI). If there is an issue with BUK6217-55C,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 BUK6217-55C,118 part is unused and in its original packaging.

Return procedure for BUK6217-55C,118:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…