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Nexperia USA Inc. BUK9907-40ATC,127
- Part No.:
- BUK9907-40ATC,127
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FETs, MOSFETs
- Package:
- TO-220-5
- Datasheet:
-
BUK9907-40ATC,127.pdf
- Description:
- MOSFET N-CH 40V 75A TO220-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,970
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Product details
Overview
BUK9907-40ATC from Nexperia is a logic-level N-channel TrenchPLUS MOSFET in TO-220 (SOT263B) package, rated for 40 V VDS, 140 A continuous drain current at Tmb = 25 °C, and 5.8 mΩ RDS(on) at VGS = 5 V and Tj = 25 °C. It integrates a temperature-sense diode (SF = 1.54 mV/K), ESD protection (6 kV HBM), and clamping diodes, and is AEC-Q101 qualified for automotive critical power switching.
For engineers reviewing the BUK9907-40ATC datasheet, BUK9907-40ATC pinout, BUK9907-40ATC application, or BUK9907-40ATC equivalent, this device supports high-current motor drives, EPAS, and protected lamp control where low on-resistance, integrated thermal monitoring, and automotive-grade reliability are required.
Technical Context
This MOSFET uses TrenchMOS technology with integrated TrenchPLUS diodes for active voltage clamping and reverse recovery management. Its gate threshold voltage (VGS(th)) ranges from 0.5 V at 175 °C to 2.3 V at –55 °C, enabling robust turn-on across automotive temperature extremes.
The device features a dedicated temperature sense diode (VF = 658 mV at 250 µA, ±32 mV hysteresis) with linear output (1.4–1.68 mV/K), allowing direct junction temperature feedback without external sensors. Drain-source clamping energy is rated at 1.4 J under unclamped inductive switching conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 40 V - Maximum drain-source blocking voltage; defines safe operation in 12 V/24 V automotive systems with transient margin. |
| RDS(on) | 5.8 mΩ @ VGS = 5 V, Tj = 25 °C - Enables <1 W conduction loss at 50 A, reducing heatsink requirements in high-power switches. |
| ID | 140 A @ Tmb = 25 °C - Continuous current rating limited by package thermal capability; derates to 75 A at Tmb = 100 °C. |
| Tj Range | –55 to +175 °C - Full automotive junction temperature range supporting engine bay and EPS module deployment. |
| ESD Rating | 6 kV HBM - Integrated electrostatic discharge protection eliminates need for external TVS on gate in assembly environments. |
| Temp Sense Diode | SF = 1.54 mV/K, VF = 658 mV @ 250 µA - Provides calibrated, traceable junction temperature measurement for closed-loop thermal management. |
| Qr | 250 nC - Low recovered charge in source-drain diode reduces switching losses and EMI during freewheeling in inductive loads. |
Pinout & Package
Package: TO-220 plastic single-ended package (SOT263B), heatsink-mounted with 1 mounting hole and 5 leads. Mounting base (mb) is electrically connected to drain.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (G) | Gate | Logic-level input terminal; compatible with 3.3 V/5 V microcontrollers; threshold voltage 1.0–2.0 V at 25 °C. |
| 2 (A) | Anode of integrated clamping diode | Connects to internal Zener-anode node; used for active clamp configuration in inductive load circuits. |
| 3 (D) | Drain | Main high-side power terminal; electrically tied to mounting base for low-inductance heatsinking. |
| 4 (K) | Cathode of integrated clamping diode | Provides controlled avalanche path; connects internally to gate via Zener structure for self-clamping. |
| 5 (S) | Source | Power return and reference node; isolated from mounting base; enables low-side or high-side switch layout. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated temperature sensing diode | Delivers calibrated 1.54 mV/K output slope with ±10 mV absolute accuracy, enabling real-time junction temperature feedback without calibration. |
| TrenchPLUS clamping diodes | Provide controlled 40 V drain-gate Zener breakdown and 1.4 J non-repetitive clamping energy, eliminating need for external snubbers in EPAS motor drivers. |
| AEC-Q101 qualification | Validated for automotive safety-critical applications including Electrical Power Assisted Steering (EPAS) and body control modules. |
| Low RDS(on) at 4.5 V drive | 6.0 mΩ @ VGS = 4.5 V ensures full enhancement with standard automotive MCU GPIOs, minimizing conduction loss in 12 V systems. |
| High peak current capability | 560 A pulsed drain current (tp ≤ 10 µs) supports short-circuit withstand in motor stall conditions without latch-up. |
Applications
| Electrical Power Assisted Steering (EPAS) | 12 V/24 V High-Power Motor Drives |
|---|---|
|
Use Scenario: Bidirectional H-bridge driver for brushless DC steering motor in passenger vehicles. IC Role / Device Role / Timing Role: High-current, low-RDS(on) half-bridge switch with integrated thermal monitoring and clamping. Use Value: Enables real-time junction temperature tracking to prevent thermal runaway during sustained torque assist, while clamping diodes suppress inductive spikes during PWM commutation. |
Use Scenario: Main power stage in industrial HVAC blower or commercial vehicle cooling fan controller. IC Role / Device Role / Timing Role: Logic-level N-channel MOSFET used in low-side switching configuration with fast turn-off (tf = 11 ns). Use Value: Delivers 140 A continuous current with <1 W conduction loss at 50 A, reducing thermal design complexity and enabling compact PCB layouts. |
| Protected Lamp Driver (Headlamp/Brake Light) | Automotive Body Control Module (BCM) |
|
Use Scenario: Overcurrent-protected headlamp switching circuit with soft-start and thermal foldback. IC Role / Device Role / Timing Role: Protected power switch with integrated ESD (6 kV HBM) and temperature-sense diode for LED thermal derating. Use Value: Eliminates need for discrete current sense and thermal sensor, reducing BOM count while meeting ISO 16750-2 load dump immunity requirements. |
Use Scenario: Centralized power distribution unit managing solenoids, relays, and actuators in modern BCMs. IC Role / Device Role / Timing Role: AEC-Q101-qualified high-side or low-side switch with built-in clamping and fault reporting via temperature diode. Use Value: Supports diagnostic logging of overtemperature events and provides inherent protection against inductive kickback from multiple parallel loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel automotive MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STL220N4F7AG | 40 V, 220 A, RDS(on) = 3.7 mΩ @ 10 V; no integrated temperature diode or clamping diodes. | Higher current capability but requires external thermal sensing and snubber networks for EPAS use. | Select when maximum current density is prioritized and system-level thermal/clamp protection is already implemented. |
| Infineon IPP040N04L | 40 V, 120 A, RDS(on) = 4.0 mΩ @ 4.5 V; includes ESD protection but no temperature sense diode or clamping Zener. | Lacks integrated clamping and thermal sensing-requires additional components for automotive functional safety compliance. | Choose for cost-sensitive 12 V applications where external thermal monitoring is acceptable and clamping is handled at board level. |
Compared with STL220N4F7AG and IPP040N04L, BUK9907-40ATC trades minor RDS(on) penalty for integrated clamping, temperature sensing, and AEC-Q101 validation-reducing system-level component count and validation effort in safety-critical automotive power stages.
Availability
BUK9907-40ATC is available at Aetrix Electronics and suitable for Electrical Power Assisted Steering (EPAS), 12 V/24 V motor drives, and protected lamp control requiring stable component supply, long-term automotive lifecycle support, and traceable sourcing.
Supply support for BUK9907-40ATC 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 specializing in high-volume, high-reliability discrete and logic devices, with deep expertise in automotive-qualified power solutions.
This device belongs to Nexperia's TrenchPLUS logic-level MOSFET product line, engineered specifically for automotive power switching applications demanding integrated protection, thermal intelligence, and AEC-Q101 compliance.
FAQ
What is the purpose of pins 2 (A) and 4 (K) on the BUK9907-40ATC?
Pins 2 (Anode) and 4 (Cathode) connect to an integrated Zener-based clamping diode between drain and gate. This structure enables active voltage clamping during inductive switching, limiting VDS to ~40 V and protecting the MOSFET from avalanche stress without external components. The diode is not intended for external connection unless implementing a custom clamp topology.
Can the temperature sense diode be used for closed-loop thermal protection?
Yes-the temperature sense diode delivers a linear 1.54 mV/K output with ±0.14 mV/K tolerance and low hysteresis (≤50 mV). When biased with a stable 250 µA current source, its forward voltage directly reflects junction temperature, enabling real-time monitoring and hardware-triggered thermal foldback in EPAS or motor drive controllers.
Is the mounting base (mb) electrically isolated from other terminals?
No-the mounting base is internally connected to the drain (pin 3). This design minimizes thermal resistance (Rth(j-mb) = 0.55 K/W) but requires electrical isolation of the heatsink from system ground when used in high-side configurations. Insulating pads or shoulder washers must be used if the heatsink is grounded.
How does the BUK9907-40ATC handle ESD in automotive assembly environments?
The device incorporates on-chip ESD protection rated at 6 kV per Human Body Model (HBM), verified per AEC-Q101. This eliminates the need for external gate protection diodes in typical automotive PCB handling and reflow processes, provided proper grounding and static-control procedures are followed during manufacturing.
BUK9907-40ATC,127 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- TrenchMOS™
- Package/Case:
- TO-220-5
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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):
- 4.5V, 10V
- Rds On (Max) @ Id, Vgs:
- 6.5mOhm @ 50A, 10V
- Vgs(th) (Max) @ Id:
- 2V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- -
- Vgs (Max):
- ±15V
- Input Capacitance (Ciss) (Max) @ Vds:
- 5836 pF @ 25 V
- FET Feature:
- Temperature Sensing Diode
- Power Dissipation (Max):
- 272W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-5
BUK9907-40ATC,127 FAQ
1.How can I place an order for BUK9907-40ATC,127 through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK9907-40ATC,127 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 BUK9907-40ATC,127 reliable?
The price and inventory of BUK9907-40ATC,127 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK9907-40ATC,127 is usually 5 days.
3.What payment methods are accepted for BUK9907-40ATC,127?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK9907-40ATC,127 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK9907-40ATC,127?
BUK9907-40ATC,127 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK9907-40ATC,127 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 BUK9907-40ATC,127?
For technical support, including BUK9907-40ATC,127 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK9907-40ATC,127 requirements.
6.How does Aetrix verify that BUK9907-40ATC,127 is sourced from the original manufacturer or authorized distributors?
All BUK9907-40ATC,127 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 BUK9907-40ATC,127 meets industry standards.
7.What is the process for return or replacement of BUK9907-40ATC,127?
All BUK9907-40ATC,127 units undergo pre-shipment inspection (PSI). If there is an issue with BUK9907-40ATC,127, 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 BUK9907-40ATC,127 part is unused and in its original packaging.
Return procedure for BUK9907-40ATC,127:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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