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

Nexperia USA Inc. BUK7506-55A,127

Name: BUK7506-55A,127
Brand: Nexperia USA Inc.
SKU: BUK7506-55A,127
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BUK7506-55A,127

Manufacturer:: Nexperia USA Inc.

Category:: FETs, MOSFETs

Package:: TO-220-3

Datasheet:: BUK7506-55A,127.pdf

Description:: MOSFET N-CH 55V 75A TO220AB

Quantity:: RFQ Add To RFQ list

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Inventory:6,657

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Product details

Overview

BUK7506-55A,127 from Nexperia is a standard-level N-channel TrenchMOS FET in TO-220AB (SOT78A) package, rated for 55 V drain-source voltage, 75 A continuous drain current at T_mb = 25 °C, and 175 °C junction temperature - designed for automotive-critical power switching in 12 V/24 V systems.

For engineers reviewing the BUK7506-55A,127 datasheet, BUK7506-55A,127 pinout, BUK7506-55A,127 application, or BUK7506-55A,127 equivalent, key selection criteria include AEC-Q101 qualification, R_DS(on) of 5.3 mΩ @ 25 °C, thermal resistance R_th(j-mb) = 0.5 K/W, and unclamped avalanche energy rating of 1.1 J.

Technical Context

This device implements a trench-gate MOSFET structure optimized for low conduction loss and robust thermal performance. Its gate threshold voltage (V_GS(th)) ranges from 2–4 V at 25 °C and remains functional down to 1 V at 175 °C, enabling reliable turn-on with standard 10 V gate drive sources.

The integrated source-drain diode exhibits V_SD = 0.85 V @ 30 A and t_rr = 80 ns under defined conditions, supporting moderate-speed commutation. Avalanche ruggedness is characterized via unclamped inductive switching with E_AS = 1.1 J, confirming suitability for inductive load management without external snubbers in validated designs.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	55 V - Maximum blocking voltage for 12 V/24 V automotive bus protection and load isolation
I_D (continuous)	75 A @ T_mb = 25 °C - Package-limited current capacity requiring heatsink mounting per TO-220AB thermal design
R_DS(on)	5.3 mΩ typ @ V_GS = 10 V, I_D = 25 A, T_j = 25 °C - Enables <1.3 W conduction loss at 50 A, reducing thermal burden
R_th(j-mb)	0.5 K/W - Junction-to-mounting-base thermal resistance enables direct heatsink coupling for high-power dissipation
E_AS	1.1 J - Non-repetitive unclamped avalanche energy supports inductive load switching without external clamping
V_GS(th)	2–4 V @ T_j = 25 °C - Ensures turn-on compatibility with standard logic-level and microcontroller GPIO drivers
t_r/t_f	115 ns / 110 ns - Fast switching transitions reduce dynamic losses in PWM-driven motor and lamp control

Pinout & Package

Package: TO-220AB (SOT78A), plastic single-ended package with heatsink-mounted base; mounting base electrically connected to drain terminal.

Pin/Terminal	Circuit Role	Design Meaning
1 - G	Gate	Control input for MOSFET channel activation; requires ≤20 V gate-source voltage per absolute maximum rating
2 - D	Drain	Main high-side power path; electrically tied to mounting base for thermal and electrical connection to heatsink
3 - S	Source	Power return node; referenced for gate drive and current sensing; forms cathode of integrated body diode

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive safety-critical applications including engine control, lighting, and chassis systems
175 °C junction rating	Enables operation in under-hood environments without derating in thermally constrained enclosures
R_DS(on) = 5.3 mΩ @ 25 °C	Reduces I²R losses by >30% vs. comparable 55 V MOSFETs, lowering heatsink requirements and system cost
Integrated source-drain diode	V_SD = 0.85 V @ 30 A enables freewheeling in relay/motor drive without external diode
TO-220AB mechanical interface	Standard 3-lead, single-hole mounting footprint compatible with legacy PCB layouts and automated assembly

Applications

Automotive Lighting Control

12 V Starter Motor Interface

Use Scenario: High-current headlamp and fog lamp switching in modern vehicle body control modules.

IC Role / Device Role / Timing Role: Power switch controlling up to 75 A resistive loads with PWM dimming capability.

Use Value: Low R_DS(on) minimizes voltage drop across switch, preserving lamp brightness and reducing thermal stress on PCB traces.

Use Scenario: Solenoid actuation and pre-engage circuitry in 12 V starter motor control units.

IC Role / Device Role / Timing Role: High-reliability main power switch handling inrush currents during cranking.

Use Value: AEC-Q101 qualification and 1.1 J avalanche rating ensure robustness against inductive kickback during disengagement.

24 V Commercial Vehicle HVAC Blower

Off-Road Equipment Solenoid Driver

Use Scenario: Speed-controlled blower motor in heavy-duty truck HVAC systems operating at 24 V nominal.

IC Role / Device Role / Timing Role: High-current half-bridge low-side switch in PWM-controlled DC motor driver stage.

Use Value: 175 °C junction rating allows sustained operation in engine bay ambient temperatures exceeding 105 °C.

Use Scenario: Hydraulic valve solenoid control in agricultural and construction machinery with wide ambient temperature range.

IC Role / Device Role / Timing Role: Robust power switch interfacing with 24 V supply and microcontroller GPIO.

Use Value: Standard-level gate drive compatibility eliminates need for level-shifting circuitry, simplifying board design.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STP75NF55	R_DS(on) = 9.5 mΩ @ 25 °C; non-AEC-Q101; TO-220FP package with insulated tab	Lacks automotive qualification; higher conduction loss increases thermal load in space-constrained designs	Preferable only for cost-sensitive industrial applications where AEC compliance is not required
IRFZ44NPBF	R_DS(on) = 17.5 mΩ @ 25 °C; 55 V rating; no specified avalanche energy; TO-220AB package	Lower peak current (49 A) and no documented E_AS limit restrict use in inductive load switching	Suitable for basic on/off loads but not recommended for motor/solenoid applications requiring robustness

Compared with STP75NF55 and IRFZ44NPBF, BUK7506-55A,127 delivers lower R_DS(on), certified automotive reliability, and quantified avalanche capability - making it the only option qualified for safety-critical 12 V/24 V load switching where thermal margin and failure mode resilience are mandatory.

Availability

BUK7506-55A,127 is available at Aetrix Electronics and suitable for automotive lighting control, 12 V starter motor interfaces, and 24 V commercial vehicle HVAC blower systems requiring stable component supply and long-term production continuity.

Supply support for BUK7506-55A,127 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 MOSFETs and ESD protection solutions.

BUK7506-55A,127 belongs to Nexperia's TrenchMOS automotive power portfolio, engineered specifically for robust, thermally efficient switching in 12 V/24 V automotive subsystems where AEC-Q101 compliance and avalanche ruggedness are essential.

FAQ

Is BUK7506-55A,127 pin-compatible with other TO-220AB N-channel MOSFETs?

Yes - BUK7506-55A,127 uses standard TO-220AB pinout (G-D-S) with mounting base connected to drain. It shares identical mechanical footprint and terminal layout with industry-standard TO-220AB devices, enabling drop-in replacement in existing PCB designs when electrical parameters align.

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

At T_mb = 100 °C, the continuous drain current is 75 A - limited by package thermal constraints rather than silicon capability, as confirmed in Figure 1 of the datasheet. Derating begins above 25 °C mounting temperature per the normalized ID curve.

Does BUK7506-55A,127 require a gate resistor for safe operation?

A gate resistor (typically 10 Ω) is recommended to control dV/dt and prevent oscillation during switching, as validated in the datasheet's switching time test conditions (RG(ext) = 10 Ω). Omission may cause ringing, shoot-through, or EMI in high-frequency PWM applications.

Can BUK7506-55A,127 be used in synchronous rectification topologies?

No - BUK7506-55A,127 is a standard-level gate device requiring ≥10 V for full enhancement and lacks the fast reverse recovery characteristics (e.g., low Q_rr, soft recovery) needed for high-efficiency synchronous rectification; dedicated logic-level or Schottky-assisted MOSFETs are preferred.

BUK7506-55A,127 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: TrenchMOS™

Package/Case:: TO-220-3

Packaging:: Tube

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 55 V

Current - Continuous Drain (Id) @ 25°C:: 75A (Tc)

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

Rds On (Max) @ Id, Vgs:: 6.3mOhm @ 25A, 10V

Vgs(th) (Max) @ Id:: 4V @ 1mA

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

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 6000 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 300W (Tc)

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Through Hole

Supplier Device Package:: TO-220AB

BUK7506-55A,127 FAQ

1.How can I place an order for BUK7506-55A,127 through Aetrix?

Please submit a Request for Quotation (RFQ) for BUK7506-55A,127 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 BUK7506-55A,127 reliable?

The price and inventory of BUK7506-55A,127 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK7506-55A,127 is usually 5 days.

3.What payment methods are accepted for BUK7506-55A,127?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK7506-55A,127 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BUK7506-55A,127?

BUK7506-55A,127 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BUK7506-55A,127 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 BUK7506-55A,127?

For technical support, including BUK7506-55A,127 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK7506-55A,127 requirements.

6.How does Aetrix verify that BUK7506-55A,127 is sourced from the original manufacturer or authorized distributors?

All BUK7506-55A,127 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 BUK7506-55A,127 meets industry standards.

7.What is the process for return or replacement of BUK7506-55A,127?

All BUK7506-55A,127 units undergo pre-shipment inspection (PSI). If there is an issue with BUK7506-55A,127, 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 BUK7506-55A,127 part is unused and in its original packaging.

Return procedure for BUK7506-55A,127:

1.Submit a request within 90 days.

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

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