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Nexperia USA Inc. BUK7K5R1-30E,115
- Part No.:
- BUK7K5R1-30E,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FET, MOSFET Arrays
- Package:
- SOT-1205, 8-LFPAK56
- Datasheet:
-
BUK7K5R1-30E,115.pdf
- Description:
- MOSFET 2N-CH 30V 40A LFPAK56D
- Quantity:
- Payment:
- Shipping:
Inventory:2,056
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Product details
Overview
BUK7K5R1-30E from Nexperia is a dual N-channel standard-level MOSFET in LFPAK56D (SOT1205) package, rated for 30 V drain-source voltage, 5.1 mΩ RDS(on) at 10 A/25 °C, and qualified to AEC-Q101 for automotive use. It integrates two independent power switches with true standard gate drive (VGS(th) > 1 V at 175 °C), enabling direct microcontroller interfacing in 12 V systems.
For engineers reviewing the BUK7K5R1-30E datasheet, BUK7K5R1-30E pinout, BUK7K5R1-30E application, or BUK7K5R1-30E equivalent, this device supports thermally demanding automotive power switching where repetitive avalanche capability, 175 °C junction rating, and low on-resistance are critical selection criteria.
Technical Context
This dual MOSFET uses TrenchMOS technology and features separate source, gate, and drain terminals for each channel - no internal connection between FET1 and FET2. Its standard-level gate enables direct drive from 3.3 V or 5 V logic without level-shifting circuitry, while the 2.21 K/W junction-to-mounting-base thermal resistance supports high-power operation with minimal heatsinking.
The device delivers 40 A continuous drain current at Tmb = 25 °C and sustains 228 mJ single-pulse avalanche energy at 40 A, making it suitable for inductive load switching in transmission control and motor drivers where transient overvoltage resilience is required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 30 V maximum - defines safe operating voltage ceiling for 12 V automotive bus with surge margin |
| RDS(on) | 4.34–5.1 mΩ at VGS = 10 V, ID = 10 A, Tj = 25 °C - enables <1 W conduction loss at 20 A |
| ID | 40 A continuous at Tmb = 25 °C - supports high-current solenoid and lamp loads without derating |
| Tj max | 175 °C - allows operation in under-hood environments without thermal shutdown |
| QGD | 9 nC - determines Miller-induced switching delay and gate driver current requirement |
| EAS | 228 mJ single-pulse avalanche energy - provides robustness against inductive kickback in motor control |
| Rth(j-mb) | 2.21 K/W - enables efficient heat transfer to PCB copper or heatsink, reducing thermal design complexity |
Pinout & Package
Package: LFPAK56D (SOT1205), plastic surface-mount package with exposed mounting base for enhanced thermal performance and mechanical robustness in automotive vibration environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | S1 | Source terminal of FET1 - connects to low-side return path; electrically isolated from S2 |
| 2 | G1 | Gate terminal of FET1 - requires 10 V for full enhancement; compatible with 3.3 V/5 V logic |
| 3 | S2 | Source terminal of FET2 - independent of S1; enables dual independent switching paths |
| 4 | G2 | Gate terminal of FET2 - fully decoupled from G1; supports asynchronous or synchronized control |
| 5 & 6 | D2 | Drain terminal of FET2 - internally paralleled pins (pins 5 and 6) reduce inductance and resistance |
| 7 & 8 | D1 | Drain terminal of FET1 - internally paralleled pins (pins 7 and 8) improve current sharing and thermal distribution |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per ISO 10605 |
| Repetitive avalanche rating | Rated for repeated inductive switching events up to 100% of single-pulse EAS limit |
| True standard-level gate | VGS(th) > 1 V at 175 °C ensures turn-on margin across full automotive temperature range |
| 175 °C junction rating | Enables operation in engine bay locations without external thermal derating or forced cooling |
| LFPAK56D thermal performance | 2.21 K/W Rth(j-mb) reduces thermal resistance by ~40% vs. SO-8, improving power density |
Applications
| Transmission Control Module | Motor Driver for HVAC Blower |
|---|---|
|
Use Scenario: High-reliability switching of solenoid actuators in automatic transmission valve bodies. IC Role / Device Role / Timing Role: Dual-channel low-side switch controlling two independent hydraulic solenoids with fast turn-off to prevent pressure overshoot. Use Value: Repetitive avalanche capability absorbs back-EMF during rapid de-energization, eliminating need for external flyback diodes. |
Use Scenario: PWM-controlled DC motor driving cabin air blower in automotive HVAC system. IC Role / Device Role / Timing Role: Dual N-channel configuration used as half-bridge low-side driver with independent gate control for bidirectional speed regulation. Use Value: 5.1 mΩ RDS(on) minimizes conduction loss at 25 A continuous, reducing thermal stress and improving efficiency over SO-8 alternatives. |
| Engine Start-Stop System | LED Headlamp Power Switch |
|
Use Scenario: Load switching for starter relay coil and auxiliary battery management during engine cranking. IC Role / Device Role / Timing Role: Dual MOSFET used as redundant low-side switch for critical safety-critical loads with independent fault monitoring. Use Value: 175 °C junction rating ensures stable operation during extended cranking cycles where ambient temperatures exceed 125 °C. |
Use Scenario: High-side or low-side switching of multi-string LED headlamps requiring precise current control. IC Role / Device Role / Timing Role: One channel drives LED string; second channel controls diagnostic shunt or thermal foldback circuit. Use Value: Standard-level gate enables direct interface with ASIL-B microcontroller GPIOs, eliminating level-shifters and reducing BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual N-channel automotive MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STL220N4F7AG | 40 V rating, 2.2 mΩ RDS(on), H2PAK-2 package, higher thermal resistance (3.0 K/W) | Better conduction loss but lower avalanche ruggedness (150 mJ) and no AEC-Q101 documentation in public datasheet | Preferred when lower RDS(on) dominates over thermal or ruggedness requirements |
| ON Semiconductor NTMFS5C675NL | 30 V, 5.2 mΩ, PowerTrench® 5x6 mm, AEC-Q101 qualified, Rth(j-mb) = 2.5 K/W | Similar electrical specs but larger footprint and higher gate charge (35 nC vs. 31.1 nC) | Selected when board layout accommodates larger package and gate driver has higher current capability |
Compared with STL220N4F7AG and NTMFS5C675NL, BUK7K5R1-30E offers superior thermal performance (2.21 K/W), documented repetitive avalanche rating, and compact LFPAK56D footprint - making it optimal for space-constrained, thermally aggressive automotive modules requiring proven field reliability.
Availability
BUK7K5R1-30E is available at Aetrix Electronics and suitable for automotive transmission control, engine start-stop systems, and HVAC motor drivers requiring stable component supply with full AEC-Q101 traceability and long-term lifecycle support.
Supply support for BUK7K5R1-30E 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 semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified MOSFETs and advanced packaging technologies.
BUK7K5R1-30E belongs to Nexperia's Automotive Logic and Power portfolio, engineered specifically for high-efficiency, high-ruggedness power switching in 12 V vehicle subsystems where thermal resilience and AEC-Q101 compliance are mandatory.
FAQ
Is BUK7K5R1-30E pin-compatible with other LFPAK56D dual MOSFETs?
No - BUK7K5R1-30E uses a unique 8-pin LFPAK56D (SOT1205) pinout with dual drain pins (5&6 for D2, 7&8 for D1) and separated sources (S1 at pin 1, S2 at pin 3). It is not pin-compatible with single-channel LFPAK56D devices or alternate dual MOSFETs like BUK7K12-30E, which have different pin assignments and internal connectivity.
What is the maximum gate-source voltage for reliable operation?
The absolute maximum VGS is ±20 V per the datasheet limiting values table. Operation beyond ±20 V risks permanent gate oxide damage. For robust design, gate drive should be clamped to ≤15 V with appropriate series resistance and TVS protection, especially in noisy automotive environments.
Does BUK7K5R1-30E include integrated body diodes?
Yes - each channel contains a monolithic parasitic body diode (source-drain), with typical forward voltage of 0.78 V at 10 A and 25 °C. These diodes support freewheeling in inductive loads but are not optimized for reverse recovery; external Schottky diodes are recommended for high-frequency PWM applications exceeding 20 kHz.
Can both channels be paralleled for higher current handling?
No - the two channels are electrically isolated with separate sources, gates, and drains; they are not internally matched for current sharing. Paralleling would require external current-balancing resistors and identical PCB trace impedances, negating the benefit of dual integration. Use a single higher-current device instead.
BUK7K5R1-30E,115 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 (Dual)
- FET Feature:
- -
- Drain to Source Voltage (Vdss):
- 30V
- Current - Continuous Drain (Id) @ 25°C:
- 40A
- Rds On (Max) @ Id, Vgs:
- 5.1mOhm @ 10A, 10V
- Vgs(th) (Max) @ Id:
- 4V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 31.1nC @ 10V
- Input Capacitance (Ciss) (Max) @ Vds:
- 2352pF @ 25V
- Power - Max:
- 68W
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LFPAK56D
BUK7K5R1-30E,115 FAQ
1.How can I place an order for BUK7K5R1-30E,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK7K5R1-30E,115 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 BUK7K5R1-30E,115 reliable?
The price and inventory of BUK7K5R1-30E,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK7K5R1-30E,115 is usually 5 days.
3.What payment methods are accepted for BUK7K5R1-30E,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK7K5R1-30E,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK7K5R1-30E,115?
BUK7K5R1-30E,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK7K5R1-30E,115 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 BUK7K5R1-30E,115?
For technical support, including BUK7K5R1-30E,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK7K5R1-30E,115 requirements.
6.How does Aetrix verify that BUK7K5R1-30E,115 is sourced from the original manufacturer or authorized distributors?
All BUK7K5R1-30E,115 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 BUK7K5R1-30E,115 meets industry standards.
7.What is the process for return or replacement of BUK7K5R1-30E,115?
All BUK7K5R1-30E,115 units undergo pre-shipment inspection (PSI). If there is an issue with BUK7K5R1-30E,115, 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 BUK7K5R1-30E,115 part is unused and in its original packaging.
Return procedure for BUK7K5R1-30E,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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