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Nexperia USA Inc. BUK625R0-40C,118
- Part No.:
- BUK625R0-40C,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FETs, MOSFETs
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
BUK625R0-40C,118.pdf
- Description:
- MOSFET N-CH 40V 90A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:8,907
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Product details
Overview
BUK625R0-40C,118 from Nexperia is an AEC-Q101-qualified N-channel TrenchMOS FET in DPAK (SOT428) package, designed for automotive power switching with 40 V VDS, 4.1 mΩ RDS(on) @ 10 VGS/25 A/25 °C, and 175 °C junction rating - deployed in electric power steering and start-stop micro-hybrid systems.
For engineers reviewing the BUK625R0-40C,118 datasheet, BUK625R0-40C,118 pinout, BUK625R0-40C,118 application, or BUK625R0-40C,118 equivalent, key selection factors include its intermediate-level gate drive compatibility (4.5–10 V), avalanche ruggedness (200 mJ unclamped), thermal resistance (0.95 K/W j-mb), and automotive-grade reliability under thermally demanding conditions.
Technical Context
This device implements a trench-gate MOSFET architecture optimized for low conduction loss and fast switching in 12 V automotive systems. Its gate threshold voltage (1.8–2.8 V at 25 °C) enables compatibility with both standard (10 V) and logic-level (4.5–5 V) drive sources, while its 0.95 K/W junction-to-mounting-base thermal resistance supports high-power operation on thermally constrained PCBs.
The FET features integrated source-drain diode with 0.85–1.2 V forward drop at 25 A and 42 ns reverse recovery time, enabling efficient freewheeling in inductive loads. Its dynamic characteristics - including 88 nC total gate charge and 25.9 nC gate-drain charge - are calibrated for robust turn-on/turn-off control under high dV/dt conditions typical in transmission control and solenoid drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 40 V maximum drain-source voltage - defines safe blocking capability in 12 V automotive battery systems with load dump transients. |
| RDS(on) | 4.1 mΩ typical @ 10 VGS, 25 A, 25 °C - enables <1 W conduction loss at 50 A, critical for thermal management in EPS and transmission modules. |
| ID | 90 A continuous drain current @ Tmb = 25 °C - limited by DPAK package thermal performance, not silicon die capability. |
| EAS | 200 mJ non-repetitive avalanche energy - provides single-pulse fault tolerance during inductive kickback in solenoid and motor control. |
| Rth(j-mb) | 0.95 K/W junction-to-mounting-base thermal resistance - allows direct heatsinking via exposed drain pad for high-power density layouts. |
| QG(tot) | 88 nC total gate charge @ VDS = 32 V, ID = 25 A - determines gate driver power requirement and switching speed in PWM-controlled lamp/motor circuits. |
| VGS(th) | 1.8–2.8 V threshold voltage @ 1 mA - ensures reliable turn-on with 3.3 V or 5 V MCU GPIOs without level-shifting in modern automotive ECUs. |
Pinout & Package
Package: SOT428 (DPAK), plastic surface-mounted package with exposed mounting base connected to drain terminal for enhanced thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (G) | Gate | Control input requiring ≤20 V absolute max; 88 nC total charge dictates gate resistor selection for EMI-controlled switching. |
| 2 (D) / mb | Drain + Mounting Base | Main power path and thermal interface; mounting base is electrically tied to drain - requires isolation from PCB ground plane. |
| 3 (S) | Source | Reference node for gate drive; internal 7.5 nH source inductance affects high-speed switching stability and layout sensitivity. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use per stress test requirements - enables deployment in safety-critical EPS and transmission control without additional qualification effort. |
| 175 °C maximum junction temperature | Supports operation in engine bay environments where ambient exceeds 125 °C - eliminates need for derating in high-temperature zones. |
| Logic-level gate drive compatibility | Turns on fully at VGS ≥ 4.5 V - compatible with 3.3 V/5 V microcontrollers and reduces gate driver component count in compact ECU designs. |
| Integrated source-drain diode | 42 ns trr, 65 nC Qr - enables efficient freewheeling in brushed DC motors and solenoids without external diode, saving board space and cost. |
| Exposed drain mounting base | 0.95 K/W Rth(j-mb) - delivers >90% of heat directly to heatsink or copper pour, enabling 158 W power dissipation at Tmb = 25 °C. |
Applications
| Electric Power Steering (EPS) | Start-Stop Micro-Hybrid Systems |
|---|---|
|
Use Scenario: High-current H-bridge motor driver controlling 12 V brushless steering assist motor during rapid torque transients. IC Role / Device Role / Timing Role: Low-side and high-side switching element handling bidirectional 60–90 A peak currents with <100 ns switching timing control. Use Value: 4.1 mΩ RDS(on) minimizes I²R losses during sustained assist, while 200 mJ avalanche rating absorbs regenerative energy during emergency stop maneuvers. |
Use Scenario: Intelligent battery disconnect switch managing cranking-to-idle transition in 12 V stop-start systems with frequent cycling. IC Role / Device Role / Timing Role: Main power path switch activated within 20 ms of ignition command, sustaining 87 A continuous at 100 °C mounting base. Use Value: 175 °C junction rating prevents thermal shutdown during repeated 50-cycle/hour operation; 0.95 K/W thermal resistance maintains stable on-resistance across duty cycles. |
| Transmission Control Solenoids | LED Headlamp Dimming Drivers |
|
Use Scenario: PWM-driven linear current regulator for electro-hydraulic pressure control solenoids in automatic transmissions. IC Role / Device Role / Timing Role: Precision current sink operating at 25 kHz PWM frequency with controlled dI/dt to prevent mechanical chatter. Use Value: 25.9 nC QGD and 52 ns rise time enable clean edge control; 7.5 nH internal source inductance is compensated via Kelvin source layout for current accuracy. |
Use Scenario: High-side dimming switch for adaptive LED headlamps requiring precise 0–100% brightness control and short-circuit protection. IC Role / Device Role / Timing Role: Constant-current switch with overtemperature and overcurrent shutdown, responding to CAN-FD commanded dimming profiles. Use Value: VGS(th) of 1.8–2.8 V ensures full enhancement with 3.3 V MCU outputs; 500 µA IDSS at 175 °C guarantees leakage immunity during prolonged engine-off parking mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel automotive power FET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STL220N4F7AG | 40 V, 2.2 mΩ RDS(on), TO-263 package, 175 °C rated, but higher QG (120 nC) | Better conduction efficiency but slower switching; requires stronger gate driver for same PWM frequency | Prefer when thermal budget allows larger package and lower conduction loss dominates system efficiency |
| IRF1404ZLPBF | 40 V, 4.7 mΩ RDS(on), TO-220AB package, 175 °C rated, no AEC-Q101 certification | Lacks automotive qualification; higher RDS(on) increases conduction loss by ~15% at 25 A | Acceptable only for non-safety-critical 12 V industrial controls where qualification is not mandated |
Compared with STL220N4F7AG, BUK625R0-40C,118 trades 0.3 mΩ higher RDS(on) for 32 nC lower gate charge and DPAK footprint - favoring compact, high-frequency automotive modules. Versus IRF1404ZLPBF, it adds AEC-Q101 compliance and 0.95 K/W thermal resistance - essential for production automotive deployments.
Availability
BUK625R0-40C,118 is available at Aetrix Electronics and suitable for electric power steering, start-stop micro-hybrid systems, and transmission control solenoid drivers requiring stable component supply across automotive production lifecycles.
Supply support for BUK625R0-40C,118 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 solutions.
This device belongs to Nexperia's TrenchMOS automotive power portfolio, engineered specifically for thermally constrained, high-reliability 12 V vehicle subsystems - emphasizing AEC-Q101 compliance, low RDS(on), and robust avalanche performance.
FAQ
What is the maximum continuous drain current for BUK625R0-40C,118 at 100 °C mounting base temperature?
The maximum continuous drain current is 87 A at Tmb = 100 °C and VGS = 10 V, as specified in Table 4 (Limiting Values). This reflects thermal derating due to reduced heat transfer efficiency at elevated mounting base temperatures, not silicon current limitation.
Does BUK625R0-40C,118 require a gate resistor for automotive PWM applications?
Yes - a gate resistor is required to control dV/dt and suppress oscillation. With 88 nC total gate charge and 25.9 nC gate-drain charge, a 10 Ω resistor (as used in Figure 3 SOA testing) limits peak gate current to ~1 A and ensures stable 25 kHz switching in solenoid drivers.
Can BUK625R0-40C,118 be used in parallel configurations for higher current handling?
Yes, but with strict layout symmetry: matched gate drive paths, Kelvin source connections, and shared thermal interface. Its positive RDS(on) temperature coefficient (10.1 mΩ at 175 °C) enables current sharing, but internal 7.5 nH source inductance demands careful paralleling to avoid dynamic imbalance.
Is the mounting base electrically isolated from the PCB in standard DPAK layout?
No - the mounting base is internally connected to the drain terminal (Pin 2), so it must be electrically isolated from the PCB ground plane using insulating thermal pads or ceramic substrates. Failure to isolate risks short-circuiting the drain to ground and catastrophic device failure.
BUK625R0-40C,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:
- 5mOhm @ 25A, 10V
- Vgs(th) (Max) @ Id:
- 2.8V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 88 nC @ 10 V
- Vgs (Max):
- ±16V
- Input Capacitance (Ciss) (Max) @ Vds:
- 5200 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 158W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
BUK625R0-40C,118 FAQ
1.How can I place an order for BUK625R0-40C,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK625R0-40C,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 BUK625R0-40C,118 reliable?
The price and inventory of BUK625R0-40C,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK625R0-40C,118 is usually 5 days.
3.What payment methods are accepted for BUK625R0-40C,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK625R0-40C,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK625R0-40C,118?
BUK625R0-40C,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK625R0-40C,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 BUK625R0-40C,118?
For technical support, including BUK625R0-40C,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK625R0-40C,118 requirements.
6.How does Aetrix verify that BUK625R0-40C,118 is sourced from the original manufacturer or authorized distributors?
All BUK625R0-40C,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 BUK625R0-40C,118 meets industry standards.
7.What is the process for return or replacement of BUK625R0-40C,118?
All BUK625R0-40C,118 units undergo pre-shipment inspection (PSI). If there is an issue with BUK625R0-40C,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 BUK625R0-40C,118 part is unused and in its original packaging.
Return procedure for BUK625R0-40C,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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