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NXP Semiconductors BUK7E1R6-30E,127

Name: BUK7E1R6-30E,127
Brand: NXP Semiconductors
SKU: BUK7E1R6-30E,127
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BUK7E1R6-30E,127

Manufacturer:: NXP Semiconductors

Category:: FETs, MOSFETs

Package:: TO-262-3 Long Leads, I2PAK, TO-262AA

Datasheet:: BUK7E1R6-30E,127.pdf

Description:: MOSFET N-CH 30V 120A I2PAK

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Product details

Overview

BUK7E1R6-30E from Nexperia is an AEC Q101-qualified N-channel TrenchMOS standard-level power MOSFET in I2PAK (SOT226) package, rated for 30 V V_DS, 120 A continuous drain current at T_mb = 25 °C, 1.25 mΩ typical R_DS(on) at V_GS = 10 V and T_j = 25 °C, and 175 °C junction temperature - deployed in automotive electric power steering and start-stop micro-hybrid systems.

For engineers reviewing the BUK7E1R6-30E datasheet, BUK7E1R6-30E pinout, BUK7E1R6-30E application, or BUK7E1R6-30E equivalent, this page delivers verified thermal resistance (R_th(j-mb) = 0.43 K/W), avalanche energy rating (1405 mJ), gate charge profile (Q_G(tot) = 154 nC), and mounting-base–referenced SOA limits critical for high-reliability 12 V automotive switching design.

Technical Context

This MOSFET uses TrenchMOS technology to achieve low on-resistance with standard-level gate drive compatibility (V_GS(th) > 1 V at 175 °C). Its true standard-level threshold enables direct interface with 5 V and 3.3 V logic controllers without level-shifting circuitry.

The device integrates a robust body diode with 58 ns reverse recovery time and 93 nC recovered charge, and features repetitive avalanche capability up to 1405 mJ under unclamped inductive switching - essential for motor control transients and solenoid load interruption.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30 V maximum - supports full 12 V automotive battery rail with margin for load dump and ISO 7637-2 pulses.
I_D (continuous)	120 A at T_mb = 25 °C - limited by I2PAK package thermal capacity, not silicon die.
R_DS(on)	1.25 mΩ typ @ V_GS = 10 V, T_j = 25 °C - enables <1.25 W conduction loss at 100 A, critical for thermally constrained modules.
Q_G(tot)	154 nC - defines gate drive energy requirement; paired with Q_GD = 49.8 nC, determines switching speed and Miller plateau duration.
R_th(j-mb)	0.43 K/W - enables efficient heat transfer to heatsink via mounting base, supporting high-power pulse operation.
E_AS	1405 mJ single-pulse avalanche energy - ensures ruggedness against inductive kickback in motor and solenoid drivers.
T_j max	175 °C - qualified per AEC Q101 for under-hood environments including engine bay and transmission control units.

Pinout & Package

I2PAK (SOT226) plastic single-ended package with isolated mounting base electrically connected to drain; low-profile 3-lead TO-262 outline optimized for surface-mount heatsinking and high-current PCB routing.

Pin/Terminal	Circuit Role	Design Meaning
1 (G)	Gate	Standard-level MOSFET control input; requires ≥10 V for full enhancement; V_GS(th) ≥ 1 V at 175 °C ensures turn-on margin across full automotive temperature range.
2 (D)	Drain	Main high-side or low-side power path terminal; internally bonded to mounting base for low-inductance, high-current conduction and thermal dissipation.
3 (S)	Source	Power return node; referenced to gate drive ground; internal source inductance (L_S = 7.5 nH) impacts switching waveform integrity in high-dI/dt applications.
Mounting base (mb)	Drain connection	Electrically tied to drain pin 2; provides primary thermal path to heatsink and mechanical anchoring; must be soldered or clamped to thermal mass for rated power handling.

Key Features

Feature	Design Value
AEC Q101 qualification	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for safety-critical power steering and transmission control.
Repetitive avalanche rating	Rated for repeated unclamped inductive switching events up to 1405 mJ - eliminates need for external snubbers in motor phase-leg designs.
175 °C junction rating	Enables operation in under-hood locations without derating below ambient +85 °C - supports compact packaging in ECU modules.
True standard-level gate	V_GS(th) ≥ 1 V at 175 °C ensures guaranteed turn-on with 5 V microcontroller outputs even at peak temperature - no gate driver IC needed.
Low R_DS(on) × Q_G figure of merit	1.25 mΩ × 154 nC = 192.5 mΩ·nC - balances conduction and switching losses for high-efficiency 12 V DC-DC and PWM motor drives.

Applications

Electric Power Steering (EPS)	Start-Stop Micro-Hybrid Systems
Use Scenario: High-current H-bridge driver for brushless EPS motor, handling bidirectional 80–100 A peak currents during steering assist. IC Role / Device Role / Timing Role: Low-side and high-side switching element in three-phase inverter; synchronized with gate driver for precise PWM timing and dead-time control. Use Value: 1.25 mΩ R_DS(on) minimizes resistive heating during sustained assist torque; 175 °C rating prevents thermal shutdown during summer parking scenarios.	Use Scenario: Starter motor engagement/disengagement and battery management in 12 V micro-hybrid architectures with regenerative braking. IC Role / Device Role / Timing Role: Main power switch controlling starter solenoid and alternator field winding; triggered by engine control unit with precise timing windows. Use Value: Repetitive avalanche ruggedness absorbs inductive energy from solenoid coil collapse without external protection; AEC Q101 ensures lifetime reliability over 15-year vehicle service life.
Transmission Control Solenoids	12 V Automotive Lighting & Lamp Drivers
Use Scenario: Precision current-controlled actuation of hydraulic pressure solenoids in automatic transmissions, requiring fast, repeatable on/off cycles. IC Role / Device Role / Timing Role: High-side or low-side current sink/source for solenoid coil; driven by PWM from transmission control module with <100 ns switching precision. Use Value: 49.8 nC Q_GD enables sub-200 ns turn-off delay (t_d(off) = 113 ns), ensuring accurate duty-cycle control and minimizing solenoid chatter.	Use Scenario: LED headlamp and DRL (daytime running light) current regulation in modern automotive lighting modules. IC Role / Device Role / Timing Role: PWM-controlled high-side switch delivering regulated current to multi-string LED arrays; thermally coupled to aluminum housing. Use Value: 0.43 K/W R_th(j-mb) allows direct mounting to lamp housing for passive cooling; 120 A rating supports future high-lumen LED upgrades without board redesign.

Electric Power Steering (EPS)

Start-Stop Micro-Hybrid Systems

Use Scenario: High-current H-bridge driver for brushless EPS motor, handling bidirectional 80–100 A peak currents during steering assist.

IC Role / Device Role / Timing Role: Low-side and high-side switching element in three-phase inverter; synchronized with gate driver for precise PWM timing and dead-time control.

Use Value: 1.25 mΩ R_DS(on) minimizes resistive heating during sustained assist torque; 175 °C rating prevents thermal shutdown during summer parking scenarios.

Use Scenario: Starter motor engagement/disengagement and battery management in 12 V micro-hybrid architectures with regenerative braking.

IC Role / Device Role / Timing Role: Main power switch controlling starter solenoid and alternator field winding; triggered by engine control unit with precise timing windows.

Use Value: Repetitive avalanche ruggedness absorbs inductive energy from solenoid coil collapse without external protection; AEC Q101 ensures lifetime reliability over 15-year vehicle service life.

Transmission Control Solenoids

12 V Automotive Lighting & Lamp Drivers

Use Scenario: Precision current-controlled actuation of hydraulic pressure solenoids in automatic transmissions, requiring fast, repeatable on/off cycles.

IC Role / Device Role / Timing Role: High-side or low-side current sink/source for solenoid coil; driven by PWM from transmission control module with <100 ns switching precision.

Use Value: 49.8 nC Q_GD enables sub-200 ns turn-off delay (t_d(off) = 113 ns), ensuring accurate duty-cycle control and minimizing solenoid chatter.

Use Scenario: LED headlamp and DRL (daytime running light) current regulation in modern automotive lighting modules.

IC Role / Device Role / Timing Role: PWM-controlled high-side switch delivering regulated current to multi-string LED arrays; thermally coupled to aluminum housing.

Use Value: 0.43 K/W R_th(j-mb) allows direct mounting to lamp housing for passive cooling; 120 A rating supports future high-lumen LED upgrades without board redesign.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STL220N3LLH6	30 V, 220 A, 0.95 mΩ R_DS(on), PowerFLAT 5x6 package; lower R_DS(on) but higher Q_G (210 nC); no AEC Q101 certification.	Higher current capability but lacks automotive qualification; suitable only for industrial or non-safety-critical automotive after-market use.	Select STL220N3LLH6 only if higher peak current and lower conduction loss outweigh need for AEC Q101 compliance and thermal performance in constrained layouts.
IRF1405PBF	55 V, 169 A, 5.3 mΩ R_DS(on), TO-220AB package; wider voltage margin but 4× higher on-resistance; not AEC Q101 qualified.	Designed for general-purpose 48 V/24 V industrial switching; unsuitable for space-constrained automotive modules due to larger footprint and inferior thermal resistance.	IRF1405PBF may serve as a non-automotive test substitute but cannot replace BUK7E1R6-30E in production automotive systems due to missing qualification and thermal limitations.

Compared with STL220N3LLH6 and IRF1405PBF, the BUK7E1R6-30E uniquely combines AEC Q101 qualification, 1.25 mΩ on-resistance in a thermally optimized I2PAK package, and 175 °C operation - making it the only viable choice for production-grade 12 V automotive power switching where reliability, thermal density, and regulatory compliance are mandatory.

Availability

BUK7E1R6-30E is available at Aetrix Electronics and suitable for electric power steering, start-stop micro-hybrid systems, and transmission control solenoids requiring stable component supply, long-term automotive lifecycle support, and traceable sourcing.

Supply support for BUK7E1R6-30E 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 leader in discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017 and focused on high-volume, high-reliability components for automotive, industrial, and computing markets.

The BUK7E1R6-30E belongs to Nexperia's TrenchMOS automotive power portfolio, engineered specifically for thermally demanding 12 V automotive subsystems requiring AEC Q101 compliance, avalanche ruggedness, and high-current density in compact packages.

FAQ

What is the maximum continuous drain current rating for BUK7E1R6-30E?

The BUK7E1R6-30E supports 120 A continuous drain current at mounting base temperature (T_mb) = 25 °C, as specified in Table 1 and Figure 1. This limit is package-constrained - not silicon-limited - and derates linearly to zero at T_mb = 125 °C per the normalized curve in Figure 2. At T_mb = 100 °C, the rated current remains 120 A due to thermal design margin built into the I2PAK package.

Does BUK7E1R6-30E require a gate driver IC for automotive MCU interfacing?

No, the BUK7E1R6-30E does not require an external gate driver IC when interfaced with standard 5 V automotive MCUs. Its true standard-level gate architecture ensures V_GS(th) ≥ 1 V even at 175 °C junction temperature, enabling reliable turn-on with 5 V logic outputs. However, for optimal switching speed and reduced gate dissipation, a low-impedance 5 V driver (e.g., TC4427) is recommended in high-frequency PWM applications.

Is BUK7E1R6-30E qualified for automotive applications per AEC Q101?

Yes, the BUK7E1R6-30E is explicitly designed and qualified to AEC Q101 standards for high-performance automotive applications, as stated in Section 1.1 of the product data sheet. This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD), confirming suitability for safety-critical systems such as electric power steering and transmission control.

What is the thermal resistance from junction to mounting base for BUK7E1R6-30E?

The BUK7E1R6-30E has a maximum thermal resistance of R_th(j-mb) = 0.43 K/W from junction to mounting base, per Table 6. This value reflects the device's optimized thermal path through the drain-connected mounting base to an external heatsink, enabling high-power operation without forced air cooling - critical for sealed ECU enclosures in automotive environments.

Can BUK7E1R6-30E be used in high-side switching configurations?

Yes, the BUK7E1R6-30E supports both high-side and low-side switching configurations. Its standard-level gate drive compatibility and drain-connected mounting base simplify high-side implementation when paired with a bootstrap or isolated gate driver. The device's 30 V V_DS rating and 175 °C junction limit make it suitable for 12 V battery-referenced high-side loads like solenoids and lamps in automotive body control modules.

BUK7E1R6-30E,127 Specifications

Product attributes: Attribute value

Manufacturer:: NXP Semiconductors

Series:: TrenchMOS™

Package/Case:: TO-262-3 Long Leads, I2PAK, TO-262AA

Packaging:: Tube

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 30 V

Current - Continuous Drain (Id) @ 25°C:: 120A (Tc)

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

Rds On (Max) @ Id, Vgs:: 1.6mOhm @ 25A, 10V

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

Gate Charge (Qg) (Max) @ Vgs:: 154 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 11960 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 349W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: I2PAK

BUK7E1R6-30E,127 FAQ

1.How can I place an order for BUK7E1R6-30E,127 through Aetrix?

Please submit a Request for Quotation (RFQ) for BUK7E1R6-30E,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 BUK7E1R6-30E,127 reliable?

The price and inventory of BUK7E1R6-30E,127 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK7E1R6-30E,127 is usually 5 days.

3.What payment methods are accepted for BUK7E1R6-30E,127?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK7E1R6-30E,127 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BUK7E1R6-30E,127?

BUK7E1R6-30E,127 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BUK7E1R6-30E,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 BUK7E1R6-30E,127?

For technical support, including BUK7E1R6-30E,127 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK7E1R6-30E,127 requirements.

6.How does Aetrix verify that BUK7E1R6-30E,127 is sourced from the original manufacturer or authorized distributors?

All BUK7E1R6-30E,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 BUK7E1R6-30E,127 meets industry standards.

7.What is the process for return or replacement of BUK7E1R6-30E,127?

All BUK7E1R6-30E,127 units undergo pre-shipment inspection (PSI). If there is an issue with BUK7E1R6-30E,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 BUK7E1R6-30E,127 part is unused and in its original packaging.

Return procedure for BUK7E1R6-30E,127:

1.Submit a request within 90 days.

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

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