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

Nexperia USA Inc. BUK9515-100A,127

Name: BUK9515-100A,127
Brand: Nexperia USA Inc.
SKU: BUK9515-100A,127
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BUK9515-100A,127

Manufacturer:: Nexperia USA Inc.

Category:: FETs, MOSFETs

Package:: TO-220-3

Datasheet:: BUK9515-100A,127.pdf

Description:: MOSFET N-CH 100V 75A TO220AB

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Product details

Overview

BUK9515-100A from NXP Semiconductors is a logic-level N-channel TrenchMOS FET in TO-220AB (SOT78A) package, designed for automotive-critical power switching. It delivers 100 V drain-source voltage rating, 75 A continuous drain current at T_mb = 25 °C, 11.5 mΩ R_DS(on) at V_GS = 10 V/ID = 25 A/T_j = 25 °C, and AEC-Q101 qualification for under-hood motor control and battery disconnect applications.

For engineers reviewing the BUK9515-100A datasheet, BUK9515-100A pinout, BUK9515-100A application, or BUK9515-100A equivalent, this page provides verified thermal resistance (R_th(j-mb) = 0.65 K/W), avalanche energy (120 mJ unclamped), gate threshold (1.5 V typ), diode forward voltage (0.85 V at 25 A), and SOA curves - all critical for high-reliability 12 V/24 V automotive power stage design.

Technical Context

This device uses TrenchMOS technology to achieve low on-resistance with logic-level gate drive compatibility (V_GS(th) = 1–2 V, fully enhanced at 5 V). Its mounting base (pin 2) is internally connected to the drain, enabling direct heatsink coupling and minimizing thermal impedance.

The integrated source-drain diode supports freewheeling in inductive loads, with 1.1 V forward voltage at 75 A and 60 ns reverse recovery time. Avalanche ruggedness is characterized for unclamped inductive switching at 35 A, supporting robust operation in motor drive fault conditions without external snubbers.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	100 V maximum - supports 24 V automotive systems with ≥2× bus voltage margin for load dump transients.
I_D (continuous)	75 A at T_mb = 25 °C - enables high-current DC motor drivers and battery main contactor replacement without forced air cooling.
R_DS(on)	11.5 mΩ typ at V_GS = 10 V - yields ≤2.1 W conduction loss at 45 A, reducing thermal stress in compact enclosures.
E_AS	120 mJ non-repetitive avalanche energy - allows safe single-pulse inductive turn-off in starter solenoid or fuel pump drivers.
R_th(j-mb)	0.65 K/W - enables junction-to-heatsink temperature rise of only 48.8 °C at 75 W dissipation, simplifying thermal design.
V_GS(th)	1.5 V typical - ensures full enhancement with standard 3.3 V or 5 V microcontroller GPIO, eliminating level-shifter requirement.
Q_G	~80 nC typical - supports 100 kHz PWM switching with <1 W gate drive loss using 5 Ω driver impedance.

Pinout & Package

TO-220AB (SOT78A) plastic single-ended package with heatsink-mounted base and 1 mounting hole; 3-lead configuration. Mounting base (mb) is electrically connected to drain terminal.

Pin/Terminal	Circuit Role	Design Meaning
1 (G)	Gate	Logic-level control input; requires ≤10 V drive; gate leakage <100 nA ensures low static power in always-on modules.
2 (D / mb)	Drain / Mounting Base	Main high-side power path; base connection enables low-inductance heatsinking and eliminates separate drain tab routing.
3 (S)	Source	Power return node; internal source inductance 7.5 nH minimizes ringing during fast switching in BLDC gate drivers.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive under-hood use including temperature cycling (-40 °C to +175 °C), humidity, and mechanical shock per JESD47.
Low R_DS(on) at 5 V drive	12 mΩ max at V_GS = 5 V/ID = 25 A - enables direct MCU interface in 12 V body control modules without gate boosters.
Integrated avalanche capability	120 mJ E_AS - eliminates need for external clamping diodes in solenoid and relay drivers, reducing BOM count.
Optimized for thermal transfer	R_th(j-mb) = 0.65 K/W - allows >200 W peak power handling with standard aluminum heatsinks, supporting compact ECU designs.
Fast diode recovery	t_rr = 60 ns - reduces switching losses and EMI in bidirectional DC-DC converters used in 48 V mild hybrid architectures.

Applications

Engine Cooling Fan Control

12 V Battery Disconnect Switch

Use Scenario: PWM-controlled brushless DC fan module in engine bay, operating continuously at ambient up to 105 °C.

IC Role / Device Role / Timing Role: High-side power switch managing 60 A peak motor current; operates at 20 kHz with <1 µs dead-time tolerance.

Use Value: 11.5 mΩ R_DS(on) limits conduction loss to 36 W at full load, while 0.65 K/W thermal resistance maintains T_j < 150 °C with passive heatsink.

Use Scenario: Solid-state replacement for mechanical battery isolation relay in start-stop systems, handling 75 A cranking surges.

IC Role / Device Role / Timing Role: Bidirectional blocking switch isolating starter circuit from rest-of-vehicle; must survive 35 A unclamped inductive turn-off.

Use Value: 120 mJ avalanche energy rating absorbs energy from starter coil collapse without failure, eliminating snubber components.

Electric Power Steering (EPS) Motor Driver

Commercial Vehicle Air Suspension Compressor

Use Scenario: Half-bridge high-side switch in 3-phase EPS inverter, exposed to vibration and thermal cycling over 15-year vehicle life.

IC Role / Device Role / Timing Role: Logic-level gate-driven power stage synchronized to 10 kHz PWM carrier; requires <200 ns propagation delay stability.

Use Value: AEC-Q101 qualification and 175 °C max junction temperature ensure reliability across -40 °C to +125 °C ambient, meeting ISO 26262 ASIL-B requirements.

Use Scenario: 24 V compressor motor control in Class 8 trucks, where ambient reaches 85 °C and duty cycle exceeds 60%.

IC Role / Device Role / Timing Role: Low-side switching element in H-bridge topology driving 5 kW induction motor; conducts 75 A continuously.

Use Value: 75 A rated current at T_mb = 25 °C de-rates predictably to 53 A at T_mb = 100 °C, enabling accurate thermal margining for sealed chassis mounting.

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
STL220N10F7	100 V, 220 A, 3.2 mΩ R_DS(on), PowerFLAT 8x8 package - lower R_DS(on) but no mounting base; requires PCB copper area for thermal management.	Preferred for space-constrained ECUs where board-level thermal spreading is feasible; unsuitable for bolted heatsink mounting.	Select when board real estate allows large thermal pad and system layout permits surface-mount assembly.
IRFB4115PBF	150 V, 115 A, 11.5 mΩ R_DS(on), TO-220AB - higher voltage rating but not AEC-Q101 qualified; 1.8 V V_GS(th) min.	Suitable for industrial 48 V systems but lacks automotive qualification; gate drive margin reduced at low temperatures.	Choose only for non-automotive applications requiring 150 V rating and where AEC compliance is not mandated.

Compared with STL220N10F7, BUK9515-100A offers bolt-down heatsink compatibility and AEC-Q101 assurance at the cost of higher R_DS(on); versus IRFB4115PBF, it trades voltage headroom for guaranteed automotive qualification and tighter V_GS(th) distribution.

Availability

BUK9515-100A is available at Aetrix Electronics and suitable for automotive engine control units, battery management systems, and commercial vehicle power distribution requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for BUK9515-100A 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

NXP Semiconductors is a Dutch semiconductor company specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with global manufacturing and quality certification to IATF 16949.

This device belongs to NXP's TrenchMOS automotive power portfolio, engineered specifically for high-reliability, high-current switching in engine, transmission, and chassis control modules where AEC-Q101 compliance and thermal robustness are mandatory.

FAQ

Is BUK9515-100A suitable for high-frequency PWM applications above 50 kHz?

Yes - its 6500 pF C_iss, 45 ns t_d(on), and 130 ns t_r support efficient 100 kHz operation with appropriate gate drive strength. However, switching losses increase significantly above 200 kHz due to Crss-dependent Miller plateau effects; thermal derating must be applied per Figure 5 SOA curves.

Can BUK9515-100A be used in parallel configurations for higher current handling?

Yes - its positive R_DS(on) temperature coefficient (Figure 12 shows ~1.8× increase from 25 °C to 175 °C) enables inherent current sharing. For stable paralleling, match gate resistors within ±5 %, minimize layout asymmetry, and ensure identical heatsink contact pressure across all devices.

What is the maximum allowable mounting base temperature for continuous 75 A operation?

T_mb must not exceed 25 °C for full 75 A rating, as specified in Table 4. At T_mb = 100 °C, continuous current is derated to 53 A. This limit is defined by thermal resistance and package construction - exceeding it risks solder joint fatigue and accelerated parametric drift.

Does the source-drain diode support synchronous rectification in DC-DC converters?

No - while the intrinsic body diode has 60 ns t_rr and 0.85 V V_SD, it lacks optimized charge characteristics for synchronous rectification. Its Q_r = 0.24 µC and lack of soft recovery make it unsuitable for high-efficiency buck converters; external Schottky or MOSFET synchronous switches are required.

BUK9515-100A,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):: 100 V

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

Drive Voltage (Max Rds On, Min Rds On):: 4.5V, 10V

Rds On (Max) @ Id, Vgs:: 14.4mOhm @ 25A, 10V

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

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

Vgs (Max):: ±10V

Input Capacitance (Ciss) (Max) @ Vds:: 8600 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 230W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220AB

BUK9515-100A,127 FAQ

1.How can I place an order for BUK9515-100A,127 through Aetrix?

Please submit a Request for Quotation (RFQ) for BUK9515-100A,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 BUK9515-100A,127 reliable?

The price and inventory of BUK9515-100A,127 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK9515-100A,127 is usually 5 days.

3.What payment methods are accepted for BUK9515-100A,127?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK9515-100A,127 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BUK9515-100A,127?

BUK9515-100A,127 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BUK9515-100A,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 BUK9515-100A,127?

For technical support, including BUK9515-100A,127 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK9515-100A,127 requirements.

6.How does Aetrix verify that BUK9515-100A,127 is sourced from the original manufacturer or authorized distributors?

All BUK9515-100A,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 BUK9515-100A,127 meets industry standards.

7.What is the process for return or replacement of BUK9515-100A,127?

All BUK9515-100A,127 units undergo pre-shipment inspection (PSI). If there is an issue with BUK9515-100A,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 BUK9515-100A,127 part is unused and in its original packaging.

Return procedure for BUK9515-100A,127:

1.Submit a request within 90 days.

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

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