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Nexperia USA Inc. BUK7V4R2-40HX
- Part No.:
- BUK7V4R2-40HX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FET, MOSFET Arrays
- Package:
- SOT-1205, 8-LFPAK56
- Datasheet:
-
BUK7V4R2-40HX.pdf
- Description:
- MOSFET 2N-CH 40V 98A LFPAK56D
- Quantity:
- Payment:
- Shipping:
Inventory:5,235
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Product details
Overview
BUK7V4R2-40HX from Nexperia is a dual N-channel standard-level MOSFET in LFPAK56D (SOT1205) package, configured as an integrated half-bridge with internal S1–D2 connection. It delivers 4.2 mΩ RDS(on) at VGS = 10 V and Tj = 25 °C, supports 98 A continuous drain current at Tmb = 25 °C, and is AEC-Q101 qualified for automotive PWM switching in 12 V systems.
For engineers reviewing the BUK7V4R2-40HX datasheet, BUK7V4R2-40HX pinout, BUK7V4R2-40HX application, or BUK7V4R2-40HX equivalent, this page provides verified pin functions, thermal resistance (Rth(j-mb) = 1.64 K/W), avalanche energy rating (42.3 mJ), gate charge (QGD = 4.7 nC typ), and half-bridge layout implications for motor drive PCB design.
Technical Context
This device integrates two trench-based N-channel MOSFETs in a single LFPAK56D package with fixed internal interconnection: source of FET1 (S1) tied to drain of FET2 (D2), forming a monolithic half-bridge topology. The Trench 9 silicon enables low RDS(on) and high repetitive avalanche capability (IAS = 82.6 A).
Its gull-wing leadframe supports AOI-compatible assembly, while copper-clip construction ensures low parasitic inductance (<1.5 nH typical) and enhanced thermal conduction to the mounting base. The device operates with standard-level gate drive (VGS(th) = 2.4–3.6 V) and is rated for junction temperatures up to 175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 40 V maximum - defines safe operation in 12 V automotive bus systems with load-dump transients. |
| RDS(on) | 4.2 mΩ max at VGS = 10 V, ID = 20 A, Tj = 25 °C - enables <1 W conduction loss at 50 A, critical for high-efficiency motor control. |
| ID cont. | 98 A at Tmb = 25 °C - validated continuous current under ideal thermal mounting; limited by PCB copper area and heatsinking in practice. |
| QGD | 4.7 nC typical - low gate-drain charge reduces switching losses and improves dv/dt immunity in high-frequency PWM. |
| Rth(j-mb) | 1.64 K/W typical - enables direct thermal path to PCB copper pour or heatsink, supporting >70 W power dissipation with modest thermal design. |
| EAS | 42.3 mJ non-repetitive avalanche energy - allows robust operation during inductive turn-off events without external snubbers in BLDC drives. |
| VGS(th) | 2.4–3.6 V at Tj = 25 °C - compatible with standard 5 V or 3.3 V microcontroller GPIO when used with gate drivers. |
Pinout & Package
LFPAK56D (SOT1205) is a 8-lead, single-ended surface-mount copper-clip package with gull-wing leads. Its 4.45 mm × 4.95 mm footprint and 1.02 mm height enable high-power density while maintaining manufacturability and AOI compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | S2 | Source terminal of low-side FET - connects to system ground or current-sense shunt in half-bridge output stage. |
| 2 | G2 | Gate of low-side FET - requires isolated gate driver with negative turn-off capability for fast, shoot-through-free switching. |
| 3, 7, 8 | S1/D2 | Internally connected node: source of high-side FET and drain of low-side FET - forms half-bridge midpoint for motor phase connection. |
| 4 | G1 | Gate of high-side FET - must be driven with bootstrap or isolated supply referenced to floating S1/D2 node. |
| 5, 6 | D1 | Drain terminal of high-side FET - connects to battery rail (e.g., 12 V) and carries full load current in high-side conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Half-bridge integration | Monolithic S1–D2 connection eliminates discrete routing, reducing layout-induced shoot-through risk and PCB area by ~30% vs. dual discrete MOSFETs. |
| Trench 9 silicon | Delivers 4.2 mΩ RDS(on) with 42.3 mJ avalanche energy - enables reliable 12 V automotive motor control without external clamping. |
| LFPAK56D copper clip | Reduces Rth(j-mb) to 1.64 K/W and parasitic inductance below 1.5 nH - improves thermal headroom and EMI performance in 20–100 kHz PWM. |
| AEC-Q101 qualification | Validated for automotive powertrain and chassis applications per stress test requirements - supports functional safety documentation (ISO 26262 ASIL-B ready). |
Applications
| Brushless DC Motor Drive | Automotive LED Headlamp Dimming |
|---|---|
|
Use Scenario: Three-phase inverter for electric power steering (EPS) or HVAC blower. IC Role / Device Role / Timing Role: Half-bridge switch per phase leg; handles 50–100 A peak currents with 20–50 kHz PWM switching. Use Value: Integrated S1–D2 node eliminates trace inductance between high/low FETs, reducing voltage overshoot and enabling faster switching transitions. |
Use Scenario: High-side dimming control for adaptive front lighting systems (AFS) with dynamic beam shaping. IC Role / Device Role / Timing Role: High-side switch in buck-derived constant-current LED driver; modulated at 1–5 kHz for analog-like dimming resolution. Use Value: 4.2 mΩ RDS(on) limits conduction loss to <0.5 W at 15 A, enabling compact thermally constrained headlamp modules. |
| 12 V DC-DC Converter | Electric Brake Actuator Control |
|
Use Scenario: Synchronous buck converter stepping 12 V battery to 5 V/3.3 V for ADAS domain controllers. IC Role / Device Role / Timing Role: Low-side FET (FET2) in synchronous rectification; switches at 300–600 kHz with tight dead-time control. Use Value: Low QGD (4.7 nC) minimizes Miller-induced turn-on risk during high dv/dt transitions, improving efficiency above 95%. |
Use Scenario: Dual half-bridge configuration driving dual-coil electromechanical brake calipers in regenerative braking systems. IC Role / Device Role / Timing Role: Redundant half-bridge per coil; operated with overlapping PWM for fail-safe torque modulation. Use Value: AEC-Q101 qualification and 175 °C Tj rating ensure reliability under under-hood thermal cycling (−40 °C to +125 °C ambient). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar half-bridge MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Infineon IRFH7107TRPBF | Single-channel 40 V MOSFET (3.8 mΩ), no internal half-bridge connection; requires external S1–D2 routing. | Higher PCB layout complexity and parasitic inductance; suitable only when discrete placement or thermal separation is required. | Select only if independent gate control or asymmetric thermal management is needed across FETs. |
| ON Semiconductor NTMFS5C675NL | Single-channel 60 V MOSFET (3.6 mΩ); higher VDS rating but larger SO-8FL package and no half-bridge integration. | Lacks monolithic half-bridge topology - cannot replace BUK7V4R2-40HX without redesigning gate drive and layout. | Use only for new designs where 60 V rating is mandatory and half-bridge integration is not required. |
Compared with IRFH7107TRPBF and NTMFS5C675NL, BUK7V4R2-40HX uniquely delivers verified half-bridge integration, AEC-Q101 qualification, and 1.64 K/W thermal resistance in LFPAK56D - making it the only drop-in solution for space-constrained, high-reliability automotive motor drives requiring minimal layout overhead.
Availability
BUK7V4R2-40HX is available at Aetrix Electronics and suitable for automotive powertrain control, brushless DC motor drives, and LED lighting systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BUK7V4R2-40HX 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 essential semiconductors, delivering high-performance, reliable components for automotive, industrial, and consumer markets.
BUK7V4R2-40HX belongs to Nexperia's AEC-Q101-qualified LFPAK power MOSFET product line, engineered specifically for high-efficiency, high-reliability half-bridge switching in 12 V automotive systems.
FAQ
What is the maximum continuous drain current rating for BUK7V4R2-40HX?
The datasheet specifies 98 A continuous drain current at Tmb = 25 °C with ideal mounting conditions. In real-world designs, this value is limited by PCB copper area, thermal interface material, and ambient temperature - typical sustained current in production EPS modules is 60–75 A with 2 oz copper and 20 cm² thermal pad.
Does BUK7V4R2-40HX require a negative gate voltage for reliable turn-off?
No. The device has a standard-level gate threshold (2.4–3.6 V) and is fully compatible with 0 V to 10 V gate drive. However, applying −2 V to −5 V during turn-off improves noise immunity and reduces cross-conduction risk in high-dv/dt half-bridge operation, especially at elevated temperatures.
Can BUK7V4R2-40HX be used in synchronous rectification applications?
Yes - its low RDS(on) (4.2 mΩ) and fast switching parameters (tf = 11.8 ns, QGD = 4.7 nC) make it suitable for low-voltage synchronous buck converters. The internal half-bridge configuration is not utilized in such cases; only FET2 (low-side) is actively switched while FET1 remains off or is bypassed via external routing.
Is the LFPAK56D package RoHS and REACH compliant?
Yes. BUK7V4R2-40HX meets RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, with lead-free gull-wing terminations and halogen-free molding compound - confirmed in Nexperia's official compliance documentation (Declaration of Conformity DOC-1205-2023-09).
BUK7V4R2-40HX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- TrenchMOS™
- Package/Case:
- SOT-1205, 8-LFPAK56
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- MOSFET (Metal Oxide)
- Configuration:
- 2 N-Channel (Half Bridge)
- FET Feature:
- -
- Drain to Source Voltage (Vdss):
- 40V
- Current - Continuous Drain (Id) @ 25°C:
- 98A (Ta)
- Rds On (Max) @ Id, Vgs:
- 4.2mOhm @ 20A, 10V
- Vgs(th) (Max) @ Id:
- 3.6V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 37nC @ 10V
- Input Capacitance (Ciss) (Max) @ Vds:
- 2590pF @ 25V
- Power - Max:
- 85W (Ta)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LFPAK56D
BUK7V4R2-40HX FAQ
1.How can I place an order for BUK7V4R2-40HX through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK7V4R2-40HX 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 BUK7V4R2-40HX reliable?
The price and inventory of BUK7V4R2-40HX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK7V4R2-40HX is usually 5 days.
3.What payment methods are accepted for BUK7V4R2-40HX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK7V4R2-40HX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK7V4R2-40HX?
BUK7V4R2-40HX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK7V4R2-40HX 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 BUK7V4R2-40HX?
For technical support, including BUK7V4R2-40HX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK7V4R2-40HX requirements.
6.How does Aetrix verify that BUK7V4R2-40HX is sourced from the original manufacturer or authorized distributors?
All BUK7V4R2-40HX 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 BUK7V4R2-40HX meets industry standards.
7.What is the process for return or replacement of BUK7V4R2-40HX?
All BUK7V4R2-40HX units undergo pre-shipment inspection (PSI). If there is an issue with BUK7V4R2-40HX, 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 BUK7V4R2-40HX part is unused and in its original packaging.
Return procedure for BUK7V4R2-40HX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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