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Nexperia USA Inc. BUK9609-40B,118
- Part No.:
- BUK9609-40B,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FETs, MOSFETs
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
BUK9609-40B,118.pdf
- Description:
- MOSFET N-CH 40V 75A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:700
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Product details
Overview
BUK9609-40B from Nexperia is a logic-level N-channel TrenchMOS FET in D2PAK (SOT404) package, rated for 40 V drain-source voltage, 75 A continuous drain current at 25 °C mounting base temperature, and 157 W total power dissipation. It features 6.2 mΩ typical RDS(on) at VGS = 10 V and 25 °C, operates up to 175 °C junction temperature, and is AEC-Q101 qualified for automotive critical loads including motors, lamps, and solenoids.
For engineers reviewing the BUK9609-40B datasheet, BUK9609-40B pinout, BUK9609-40B application, or BUK9609-40B equivalent, key selection criteria include logic-level gate drive compatibility (VGS(th) = 1.1–2.0 V), low on-resistance under 5 V drive (7.6 mΩ typ), thermal robustness (Rth(j-mb) = 0.95 K/W), avalanche energy rating (241 mJ), and automotive qualification status.
Technical Context
This MOSFET employs TrenchMOS technology to achieve low conduction losses and stable switching performance across wide temperature ranges. Its gate threshold voltage (1.1–2.0 V at 25 °C) ensures reliable turn-on with standard 3.3 V or 5 V logic controllers, while its 175 °C maximum junction temperature supports operation in thermally constrained engine-bay environments.
The device integrates an intrinsic body diode with 0.85 V forward voltage at 25 A and 57 ns reverse recovery time, enabling efficient freewheeling in inductive load switching. Its dynamic parameters-including 32 nC total gate charge, 12 nC gate-drain charge, and 2700 pF input capacitance-support predictable gate drive design for PWM frequencies up to several hundred kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 40 V maximum - supports 12 V automotive systems with margin against load-dump transients. |
| RDS(on) @ VGS = 5 V | 7.6 mΩ typical - enables high-efficiency switching of 25 A loads with ≤4.75 W conduction loss. |
| ID continuous | 75 A at Tmb = 25 °C - limited by D2PAK package thermal capability, not die. |
| EAS | 241 mJ non-repetitive avalanche energy - provides robustness against inductive switching stress without external snubbers. |
| Rth(j-mb) | 0.95 K/W - allows direct heatsinking via mounting base for high-power thermal management. |
| VGS(th) | 1.1–2.0 V at 25 °C - ensures full enhancement with 3.3 V microcontroller outputs. |
| QG(tot) | 32 nC - determines gate driver current requirement (e.g., 3.2 A peak for 10 ns rise time). |
Pinout & Package
Package: D2PAK (SOT404), plastic single-ended surface-mounted package with 3 leads (one lead cropped); mounting base electrically connected to drain.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Gate (G) | Control terminal; accepts logic-level voltage (≥4.5 V) to fully enhance channel; requires <32 nC charge for full switching. |
| 2 | Drain (D) | Main power output terminal; internally connected to mounting base; carries full load current and dissipates heat directly to heatsink. |
| 3 | Source (S) | Power return path; referenced to system ground; forms common node for gate drive and load return. |
Key Features
| Feature | Design Value |
|---|---|
| Logic-level gate drive | Operates fully enhanced with 5 V gate voltage, eliminating need for gate boosters in 3.3/5 V MCU designs. |
| AEC-Q101 qualification | Validated for automotive safety-critical applications including engine control, lighting, and chassis systems. |
| 175 °C junction rating | Enables deployment in under-hood locations where ambient temperatures exceed 125 °C. |
| Low RDS(on) at 5 V | 7.6 mΩ typical ensures <5 W conduction loss at 25 A, reducing heatsink size and system cost. |
| Integrated avalanche ruggedness | 241 mJ EAS allows safe clamping of inductive kickback without external protection components. |
Applications
| Automotive Lighting Control | Engine Bay Solenoid Driver |
|---|---|
|
Use Scenario: Switching 12 V halogen or LED headlamp circuits in modern vehicle lighting modules. IC Role / Device Role / Timing Role: High-side or low-side power switch controlling lamp current up to 75 A peak. Use Value: Low RDS(on) minimizes thermal rise during PWM dimming; AEC-Q101 ensures reliability over 15-year vehicle lifetime. |
Use Scenario: Driving fuel injector or transmission solenoid coils requiring fast, high-current pulses. IC Role / Device Role / Timing Role: Low-inductance power switch with 57 ns reverse recovery enabling precise 1–10 ms pulse width control. Use Value: 241 mJ avalanche energy absorbs coil flyback without snubber, simplifying PCB layout and improving EMC. |
| 12 V DC Motor Starter | Industrial HVAC Blower Control |
|
Use Scenario: Starting small brushed DC motors in power seats, mirrors, or sunroofs. IC Role / Device Role / Timing Role: Inrush current limiter and steady-state switch handling 60–75 A startup surges. Use Value: 157 W power dissipation capacity and 0.95 K/W thermal resistance allow direct heatsink mounting without derating at 85 °C ambient. |
Use Scenario: Controlling 12 V blower fans in commercial HVAC control units operating in hot enclosures. IC Role / Device Role / Timing Role: Thermally robust power switch managing continuous 40–50 A loads in sealed, ventilated cabinets. Use Value: 175 °C max junction temperature and Q101 qualification ensure uninterrupted operation in industrial environments exceeding 105 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel logic-level power FET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STL220N4F7AG | 40 V, 220 A rated, but RDS(on) = 1.7 mΩ @ 10 V; requires higher gate drive current (QG = 110 nC). | Targeted at higher-current inverters; less suitable for space-constrained automotive modules due to larger PowerFLAT 5x6 package. | Select when >100 A continuous current is required and board area permits larger footprint. |
| IRL1404ZPBF | 40 V, 165 A rated, RDS(on) = 3.2 mΩ @ 10 V, but only 175 °C rated and not AEC-Q101 qualified. | Designed for industrial/commercial use; lacks automotive qualification and has higher gate charge (QG = 68 nC). | Select for cost-sensitive non-automotive applications where qualification is not mandated and thermal margin is ample. |
Compared with STL220N4F7AG and IRL1404ZPBF, the BUK9609-40B uniquely balances automotive qualification, compact D2PAK packaging, logic-level drive, and verified 241 mJ avalanche capability-making it optimal for space- and reliability-constrained 12 V automotive power switching.
Availability
BUK9609-40B is available at Aetrix Electronics and suitable for automotive lighting control, engine bay solenoid drivers, and 12 V DC motor starters requiring stable component supply, long-term lifecycle support, and traceable sourcing for Tier-1 OEM programs.
Supply support for BUK9609-40B 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-grade components and advanced packaging.
The BUK9609-40B belongs to Nexperia's TrenchMOS logic-level power FET product line, engineered specifically for automotive 12 V power distribution systems demanding AEC-Q101 compliance, thermal resilience, and simplified gate drive.
FAQ
Is BUK9609-40B suitable for high-frequency PWM motor control?
Yes. With 32 nC total gate charge, 12 nC gate-drain charge, and 106 ns rise time at 5 V drive, the BUK9609-40B supports PWM frequencies up to 200 kHz in well-designed gate drive circuits. Its 2700 pF input capacitance and low internal inductances (LD = 2.5 nH, LS = 7.5 nH) minimize switching losses and ringing in motor H-bridge or half-bridge configurations.
What is the maximum continuous drain current at 100 °C mounting base temperature?
At Tmb = 100 °C, the BUK9609-40B supports 67 A continuous drain current per Figure 1 in the datasheet. This derating reflects thermal limits of the D2PAK package; actual current must be validated against system-level heatsink performance and ambient conditions.
Does the mounting base require electrical isolation from the heatsink?
No. The mounting base is internally connected to the drain terminal (Pin 2), so it must be electrically isolated from any grounded heatsink using insulating thermal pads or mica washers. Failure to isolate will short the drain to ground and destroy the device.
Can BUK9609-40B replace older BUK9609-40A devices in existing designs?
Yes. The BUK9609-40B is a direct replacement for BUK9609-40A, sharing identical pinout, package, and electrical specifications. Revision 02 updates documentation formatting and separates the part number from earlier combined datasheets, but no functional or parametric changes were introduced.
BUK9609-40B,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:
- Last Time Buy
- 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):
- 5V, 10V
- Rds On (Max) @ Id, Vgs:
- 7mOhm @ 25A, 10V
- Vgs(th) (Max) @ Id:
- 2V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 32 nC @ 5 V
- Vgs (Max):
- ±15V
- Input Capacitance (Ciss) (Max) @ Vds:
- 3600 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 157W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
BUK9609-40B,118 FAQ
1.How can I place an order for BUK9609-40B,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK9609-40B,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 BUK9609-40B,118 reliable?
The price and inventory of BUK9609-40B,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK9609-40B,118 is usually 5 days.
3.What payment methods are accepted for BUK9609-40B,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK9609-40B,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK9609-40B,118?
BUK9609-40B,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK9609-40B,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 BUK9609-40B,118?
For technical support, including BUK9609-40B,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK9609-40B,118 requirements.
6.How does Aetrix verify that BUK9609-40B,118 is sourced from the original manufacturer or authorized distributors?
All BUK9609-40B,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 BUK9609-40B,118 meets industry standards.
7.What is the process for return or replacement of BUK9609-40B,118?
All BUK9609-40B,118 units undergo pre-shipment inspection (PSI). If there is an issue with BUK9609-40B,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 BUK9609-40B,118 part is unused and in its original packaging.
Return procedure for BUK9609-40B,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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