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Nexperia USA Inc. BUK768R1-40E,118
- Part No.:
- BUK768R1-40E,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FETs, MOSFETs
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
BUK768R1-40E,118.pdf
- Description:
- MOSFET N-CH 40V 75A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:4,672
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Product details
Overview
BUK768R1-40E from Nexperia is a standard-level N-channel TrenchMOS FET in SOT404 (D2PAK) package, rated for 40 V VDS, 75 A continuous drain current at Tmb = 25 °C, and 5.6 mΩ typical RDS(on) at VGS = 10 V and Tj = 25 °C. It is AEC-Q101 qualified, avalanche-rated, and designed for high-reliability 12 V automotive power switching including start-stop micro-hybrid systems.
For engineers reviewing the BUK768R1-40E datasheet, BUK768R1-40E pinout, BUK768R1-40E application, or BUK768R1-40E equivalent, key selection criteria include its 175 °C junction rating, true standard-level gate (VGS(th) > 1 V at 175 °C), repetitive avalanche capability, and thermal resistance of 1.56 K/W from junction to mounting base.
Technical Context
This MOSFET employs TrenchMOS technology to achieve low on-resistance and robust switching performance under thermally demanding conditions. Its gate threshold voltage remains functional up to 175 °C, enabling reliable operation in engine bay environments without requiring level-shifting circuitry.
The device features integrated source-drain diode with 18.6 ns reverse recovery time and 10.7 nC recovered charge, supporting fast commutation in inductive load control. Its 2.5 nH internal drain inductance and 7.5 nH source inductance are optimized for minimizing switching oscillation in high-current automotive power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 40 V - Maximum drain-source blocking voltage compatible with 12 V automotive battery systems with load-dump transients. |
| ID (continuous) | 75 A at Tmb = 25 °C - High-current capability limited by D2PAK package thermal performance, not silicon. |
| RDS(on) | 5.6 mΩ typ @ VGS = 10 V, ID = 20 A, Tj = 25 °C - Enables <1 W conduction loss at 40 A, critical for thermal management in compact modules. |
| QGD | 7.4 nC - Low gate-drain charge supports fast, controllable turn-off with reduced risk of dv/dt-induced false triggering. |
| Rth(j-mb) | 1.56 K/W - Junction-to-mounting-base thermal resistance enables direct heatsink mounting for efficient power dissipation. |
| EAS | 43.8 mJ - Non-repetitive avalanche energy rating allows safe operation during inductive switching transients without external snubbers. |
| VGS(th) | >1 V @ Tj = 175 °C - Ensures gate turn-on remains functional across full automotive temperature range without special drive circuitry. |
Pinout & Package
SOT404 (D2PAK) plastic single-ended surface-mounted package with 3 leads (one lead cropped); mounting base (mb) is electrically connected to drain and serves as primary thermal path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | G | Gate input terminal - accepts standard 10 V logic-level drive; threshold remains active up to 175 °C junction temperature. |
| 2 | D | Drain terminal - electrically tied to mounting base; primary high-side switching node in high-side configurations. |
| 3 | S | Source terminal - return path for load current; referenced to system ground in low-side switch applications. |
| mb | Mounting base | Thermal and electrical connection to drain - must be soldered to copper pour or heatsink for rated power handling. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock per AEC standard. |
| Repetitive avalanche rating | Enables robust operation in inductive switching without external protection, reducing BOM count in motor/solenoid drivers. |
| 175 °C maximum junction temperature | Supports placement in high-temperature zones (e.g., near engine blocks) without derating or forced cooling. |
| True standard-level gate | VGS(th) > 1 V at 175 °C eliminates need for gate driver ICs or level shifters in 12 V vehicle architectures. |
| Low QGD/QG ratio | 7.4 nC / 24 nC = 0.31 - improves switching controllability and reduces Miller-induced shoot-through risk in half-bridge designs. |
Applications
| Engine Start-Stop Control | Transmission Solenoid Driver |
|---|---|
|
Use Scenario: Managing high-current solenoid activation during engine restart in micro-hybrid vehicles. IC Role / Device Role / Timing Role: High-side power switch controlling 12 V solenoid coil with 75 A peak demand and fast turn-on/turn-off timing. Use Value: 5.6 mΩ RDS(on) minimizes heat generation during repeated engagement cycles; 43.8 mJ avalanche rating absorbs inductive kickback without clamping diodes. |
Use Scenario: Driving electro-hydraulic transmission control valves in automatic gearboxes. IC Role / Device Role / Timing Role: Low-side switching element delivering precise PWM-controlled current to solenoid actuators. Use Value: 18.6 ns trr and 10.7 nC Qr enable clean, low-loss commutation at 1–5 kHz PWM frequencies required for pressure modulation. |
| 12 V Battery Disconnect Switch | Electric Power Steering (EPS) Motor Phase Switch |
|
Use Scenario: Isolating auxiliary battery banks or safety-critical subsystems during fault conditions. IC Role / Device Role / Timing Role: Bidirectional blocking switch (with external diode) handling up to 40 V transients and 75 A fault currents. Use Value: 40 V VDS rating accommodates ISO 7637-2 pulse 5a load dump; 1.56 K/W Rth(j-mb) ensures stable operation under sustained 50 A load. |
Use Scenario: Half-bridge phase leg in brushless DC motor driver for EPS assist torque generation. IC Role / Device Role / Timing Role: High-current, high-reliability switching device operating in hard-switched PWM mode at elevated ambient temperatures. Use Value: AEC-Q101 qualification and 175 °C Tj rating ensure uninterrupted operation in under-hood EPS ECUs exposed to 125 °C ambient + self-heating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel automotive power MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STL220N4F7AG | 40 V, 220 A, 1.6 mΩ RDS(on), TO-263 package, 175 °C rated, AEC-Q101 | Higher current capacity and lower RDS(on), but larger footprint and higher gate charge (QG = 95 nC) | Preferred when board space permits and ultra-low conduction loss is prioritized over switching speed. |
| IRF1404ZLPbF | 40 V, 186 A, 3.8 mΩ RDS(on), TO-220AB package, non-AEC-Q101, 175 °C rated | Larger through-hole package, no automotive qualification, higher RDS(on) than BUK768R1-40E at same VGS | Suitable only for non-automotive industrial applications where AEC-Q101 is not mandated. |
Compared with STL220N4F7AG and IRF1404ZLPbF, BUK768R1-40E offers optimal balance of automotive qualification, D2PAK surface-mount compatibility, and low QGD/RDS(on) for thermally constrained 12 V systems-making it preferred for space-limited start-stop and transmission control modules.
Availability
BUK768R1-40E is available at Aetrix Electronics and suitable for automotive power distribution, engine control unit (ECU) load switching, and electric power steering (EPS) subsystems requiring stable component supply across extended product lifecycles.
Supply support for BUK768R1-40E 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, logic, and MOSFET solutions, with leadership in automotive-qualified components and advanced packaging.
BUK768R1-40E belongs to Nexperia's TrenchMOS automotive power portfolio, engineered specifically for robust, thermally efficient switching in 12 V vehicle networks-including start-stop, body control, and transmission systems.
FAQ
Is BUK768R1-40E suitable for high-side switching configurations?
Yes. The mounting base (mb) is internally connected to the drain, enabling direct high-side configuration when the base is mounted to a fixed potential (e.g., battery rail). Gate drive must reference source potential, and layout must minimize source inductance (7.5 nH) to avoid ringing during fast switching.
What is the maximum continuous drain current at 100 °C mounting base temperature?
Per Figure 2 in the datasheet, the continuous drain current is derated to 59 A at Tmb = 100 °C with VGS = 10 V. This reflects thermal limitation of the D2PAK package-not silicon capability-and assumes adequate PCB copper area for heat spreading.
Does BUK768R1-40E require a gate resistor for automotive EMI compliance?
Yes. A gate resistor (typically 5–10 Ω) is recommended to control dV/dt and reduce EMI during switching. The device's 7.4 nC QGD and 24 nC QG(tot) make it responsive to moderate gate resistance values without compromising switching speed in 12 V systems.
Can BUK768R1-40E replace older MOSFETs like BUZ11 in automotive upgrades?
Yes, with design validation. BUK768R1-40E offers lower RDS(on) (5.6 mΩ vs. ~40 mΩ for BUZ11), AEC-Q101 qualification, and 175 °C rating versus BUZ11's 150 °C. However, pinout differs (SOT404 vs. TO-220), requiring PCB redesign and thermal validation.
BUK768R1-40E,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- TrenchMOS™
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 40 V
- Current - Continuous Drain (Id) @ 25°C:
- 75A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 7.2mOhm @ 20A, 10V
- Vgs(th) (Max) @ Id:
- 4V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 24 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 1730 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 96W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
BUK768R1-40E,118 FAQ
1.How can I place an order for BUK768R1-40E,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK768R1-40E,118 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 BUK768R1-40E,118 reliable?
The price and inventory of BUK768R1-40E,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK768R1-40E,118 is usually 5 days.
3.What payment methods are accepted for BUK768R1-40E,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK768R1-40E,118 transactions.
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4.How is shipping managed for BUK768R1-40E,118?
BUK768R1-40E,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK768R1-40E,118 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 BUK768R1-40E,118?
For technical support, including BUK768R1-40E,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK768R1-40E,118 requirements.
6.How does Aetrix verify that BUK768R1-40E,118 is sourced from the original manufacturer or authorized distributors?
All BUK768R1-40E,118 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 BUK768R1-40E,118 meets industry standards.
7.What is the process for return or replacement of BUK768R1-40E,118?
All BUK768R1-40E,118 units undergo pre-shipment inspection (PSI). If there is an issue with BUK768R1-40E,118, 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 BUK768R1-40E,118 part is unused and in its original packaging.
Return procedure for BUK768R1-40E,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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