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Nexperia USA Inc. BUK626R2-40C,118
- Part No.:
- BUK626R2-40C,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FETs, MOSFETs
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
BUK626R2-40C,118.pdf
- Description:
- MOSFET N-CH 40V 90A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:7,807
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Product details
Overview
BUK626R2-40C from Nexperia is an AEC-Q101-qualified N-channel TrenchMOS FET in DPAK (SOT428) package, designed for automotive power switching with 40 V VDS, 5.2 mΩ RDS(on) @ 10 VGS/25 °C, 90 A continuous drain current, and 175 °C junction rating-used in electric power steering and start-stop micro-hybrid systems.
For engineers reviewing the BUK626R2-40C datasheet, BUK626R2-40C pinout, BUK626R2-40C application, or BUK626R2-40C equivalent, key selection criteria include gate drive compatibility (standard/logic-level), thermal robustness in 12 V automotive environments, avalanche energy handling (113 mJ), and mounting-base thermal resistance (1.17 K/W).
Technical Context
This intermediate-level gate-drive MOSFET uses Nexperia's TrenchMOS technology to achieve low on-resistance while maintaining ruggedness under high-current transients and unclamped inductive switching. Its gate threshold voltage (1.8–2.8 V) enables reliable turn-on with both 5 V and 10 V logic sources.
The device integrates a monolithic source-drain diode with 0.8–1.2 V forward drop and 43 ns reverse recovery time, supporting synchronous rectification and freewheeling in motor control. Thermal design centers on the mounting base (connected to drain), with Rth(j-mb) = 1.17 K/W enabling high-power dissipation at elevated ambient temperatures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 40 V maximum drain-source voltage - defines safe blocking capability in 12 V automotive systems with load-dump transients. |
| RDS(on) | 5.2 mΩ typical @ VGS = 10 V, ID = 15 A, Tj = 25 °C - enables <1 W conduction loss at 45 A, critical for thermally constrained ECUs. |
| ID (cont) | 90 A @ Tmb = 25 °C - limited by package thermal capacity, not silicon, requiring heatsink-integrated PCB layout. |
| EAS | 113 mJ non-repetitive avalanche energy - supports robust operation during inductive kickback in solenoid and motor control without external snubbers. |
| Tj max | 175 °C maximum junction temperature - allows sustained operation in engine bay locations with minimal derating up to 100 °C ambient. |
| QG(tot) | 67 nC total gate charge @ VDS = 32 V, ID = 25 A - determines required gate driver peak current (≥3 A for 20 ns rise time with 10 Ω RG). |
| Rth(j-mb) | 1.17 K/W junction-to-mounting-base thermal resistance - mandates direct thermal interface to copper pour or heatsink for >50 W power handling. |
Pinout & Package
Package: SOT428 (DPAK), 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 | Control terminal; requires ≥10 V for full enhancement; threshold range 1.8–2.8 V enables compatibility with 5 V MCU outputs. |
| 2 (D) | Drain | Main power output node; internally bonded to mounting base for low-inductance, high-current routing and thermal conduction. |
| 3 (S) | Source | Power return path; referenced to system ground in low-side switch configurations; carries full load current and diode reverse recovery charge. |
| mb | Mounting Base | Exposed copper pad tied to drain; must be soldered to ≥200 mm² internal/external copper for rated power dissipation and EMI control. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock per AEC standard. |
| Logic-level gate drive support | Turns on fully at VGS = 4.5 V (RDS(on) ≤ 10.7 mΩ), enabling direct interface with 5 V microcontrollers without level-shifting. |
| High-temperature operation | Rated for continuous operation at Tj = 175 °C and Tstg = −55 to +175 °C - suitable for under-hood ECU placement. |
| Integrated source-drain diode | Forward voltage 0.8–1.2 V @ 25 A and fast 43 ns trr - reduces need for external freewheeling diodes in brushed DC motor drivers. |
| Low gate-drain charge (QGD) | 20 nC - minimizes Miller-induced switching oscillation and improves hard-switching stability in PWM inverters. |
Applications
| Electric Power Steering (EPS) | Start-Stop Micro-Hybrid Control |
|---|---|
|
Use Scenario: High-current H-bridge phase leg in 12 V EPS motor driver, switching up to 80 A peak during assist torque events. IC Role / Device Role / Timing Role: Low-side power switch with fast turn-off (124 ns td(off)) and low RDS(on) to minimize conduction losses during extended assist cycles. Use Value: 5.2 mΩ on-resistance reduces I²R heating by >30% vs. comparable 8 mΩ devices, extending ECU lifetime in sealed enclosures. |
Use Scenario: Load switch controlling starter motor engagement and battery isolation during engine restart in 12 V micro-hybrid systems. IC Role / Device Role / Timing Role: High-current, high-reliability power switch handling 90 A continuous and 397 A pulsed currents during cranking. Use Value: 113 mJ avalanche energy rating eliminates need for external TVS clamping during load dump, simplifying BOM and board space. |
| Transmission Solenoid Driver | LED Headlamp Dimming Module |
|
Use Scenario: PWM-controlled 12 V solenoid actuator in automatic transmission valve body, operating at 100–500 Hz with 25 A average current. IC Role / Device Role / Timing Role: Low-side switch managing inductive load flyback; leverages integrated body diode for freewheeling. Use Value: 43 ns reverse recovery time and 56 nC Qr limit diode switching losses and EMI generation during high-frequency PWM. |
Use Scenario: High-side or low-side dimming switch for adaptive LED headlamps requiring precise current regulation and thermal resilience. IC Role / Device Role / Timing Role: Thermally robust power stage operating continuously at 70 A with ambient up to 100 °C near headlamp housing. Use Value: 175 °C Tj rating and 1.17 K/W Rth(j-mb) enable stable dimming performance without thermal shutdown in compact optical modules. |
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 |
|---|---|---|---|
| STL220N4F7AG | 40 V, 220 A, RDS(on) = 1.6 mΩ @ 10 V - lower on-resistance but larger D2PAK package and higher QG (120 nC). | Better for ultra-high-current inverters (>150 A), less suitable for space-constrained EPS modules due to footprint and gate drive demand. | Select when peak current exceeds 120 A and PCB area permits larger package; verify gate driver can supply >5 A peak. |
| IRF1404ZLPBF | 40 V, 195 A, RDS(on) = 3.7 mΩ @ 10 V - TO-220AB package, no AEC-Q101 qualification, higher Rth(j-c) (1.5 K/W). | Acceptable for industrial motor drives but unsuitable for automotive production due to missing qualification and inferior thermal path. | Use only for prototyping or non-automotive applications; avoid where AEC compliance, long-term reliability, or mounting-base thermal performance are required. |
Compared with STL220N4F7AG and IRF1404ZLPBF, the BUK626R2-40C delivers optimal balance of automotive qualification, DPAK footprint, 5.2 mΩ on-resistance, and 1.17 K/W thermal resistance-making it preferred for volume automotive ECU designs where space, reliability, and thermal management are co-constrained.
Availability
BUK626R2-40C is available at Aetrix Electronics and suitable for electric power steering, start-stop micro-hybrid control, and transmission solenoid driver applications requiring stable component supply across automotive production lifecycles.
Supply support for BUK626R2-40C 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 ESD protection.
The BUK626R2-40C belongs to Nexperia's TrenchMOS automotive power portfolio, engineered specifically for thermally demanding 12 V vehicle subsystems requiring AEC-Q101 compliance, low RDS(on), and robust avalanche performance.
FAQ
Is BUK626R2-40C suitable for high-frequency PWM switching above 100 kHz?
Yes, its 20 nC QGD, 67 nC QG(tot), and 124 ns td(off) support efficient operation up to 200 kHz in motor control, provided gate driver strength (≥3 A peak) and PCB layout minimize parasitic inductance. Thermal limits remain governed by mounting base temperature, not switching frequency alone.
What is the maximum allowable gate-source voltage during transient conditions?
The absolute maximum VGS is ±16 V DC and ±20 V pulsed (tp ≤ 10 µs). Exceeding these risks gate oxide breakdown. For robust design, keep VGS ≤ 12 V with transient suppression (e.g., Zener clamp at 12 V) when driving from 15 V supplies or in noisy automotive environments.
How does the mounting base connection affect PCB layout and thermal design?
The mounting base (mb) is electrically tied to drain and must be soldered to a large copper area (≥200 mm²) with ≥4 thermal vias to inner/ground planes. This establishes the primary thermal path (Rth(j-mb) = 1.17 K/W) and prevents hotspots; insufficient copper increases junction temperature by >25 °C at 50 W dissipation.
Can BUK626R2-40C replace older 40 V MOSFETs like BUZ11 in automotive upgrades?
Yes, with caveats: BUK626R2-40C offers lower RDS(on) (5.2 mΩ vs. BUZ11's ~40 mΩ), AEC-Q101 qualification, and superior thermal performance-but requires verification of gate drive compatibility (VGS(th) 1.8–2.8 V vs. BUZ11's 2–4 V) and layout adaptation for DPAK footprint and mounting base soldering.
BUK626R2-40C,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- TrenchMOS™
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 40 V
- Current - Continuous Drain (Id) @ 25°C:
- 90A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 6.2mOhm @ 15A, 10V
- Vgs(th) (Max) @ Id:
- 2.8V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 67 nC @ 10 V
- Vgs (Max):
- ±16V
- Input Capacitance (Ciss) (Max) @ Vds:
- 3720 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 128W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
BUK626R2-40C,118 FAQ
1.How can I place an order for BUK626R2-40C,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK626R2-40C,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 BUK626R2-40C,118 reliable?
The price and inventory of BUK626R2-40C,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK626R2-40C,118 is usually 5 days.
3.What payment methods are accepted for BUK626R2-40C,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK626R2-40C,118 transactions.
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4.How is shipping managed for BUK626R2-40C,118?
BUK626R2-40C,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK626R2-40C,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 BUK626R2-40C,118?
For technical support, including BUK626R2-40C,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK626R2-40C,118 requirements.
6.How does Aetrix verify that BUK626R2-40C,118 is sourced from the original manufacturer or authorized distributors?
All BUK626R2-40C,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 BUK626R2-40C,118 meets industry standards.
7.What is the process for return or replacement of BUK626R2-40C,118?
All BUK626R2-40C,118 units undergo pre-shipment inspection (PSI). If there is an issue with BUK626R2-40C,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 BUK626R2-40C,118 part is unused and in its original packaging.
Return procedure for BUK626R2-40C,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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