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Nexperia USA Inc. BUK9624-55A,118
- Part No.:
- BUK9624-55A,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FETs, MOSFETs
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
BUK9624-55A,118.pdf
- Description:
- MOSFET N-CH 55V 46A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:4,713
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Product details
Overview
BUK9624-55A,118 from Nexperia is a logic-level N-channel TrenchMOS FET in D2PAK (SOT404) package, rated for 55 V drain-source voltage, 46 A continuous drain current at 25 °C mounting base temperature, and 105 W total power dissipation. It features 20–24 mΩ RDS(on) at VGS = 5 V and Tj = 25 °C, AEC-Q101 qualification, and 175 °C junction rating-designed for automotive 12 V/24 V load switching including motors, lamps, and solenoids.
For engineers reviewing the BUK9624-55A datasheet, BUK9624-55A pinout, BUK9624-55A application, or BUK9624-55A equivalent, this device supports thermally demanding automotive power stages requiring low gate-drive voltage compatibility (≤5 V), high avalanche ruggedness (76 mJ), and robust thermal performance via low Rth(j-mb) = 1.4 K/W.
Technical Context
This TrenchMOS FET employs trench-gate architecture to achieve low on-resistance with logic-level gate drive compatibility-enabling direct interface with 3.3 V/5 V microcontrollers without level-shifting. Its AEC-Q101 qualification confirms suitability for automotive safety-critical circuits where reliability under thermal cycling and high-current transients is mandatory.
The device integrates an intrinsic body diode with 0.85–1.2 V forward voltage at 25 A and exhibits fast reverse recovery (trr = 50 ns) and low recovered charge (Qr = 85 nC), supporting efficient hard-switched and synchronous rectification topologies in 12 V/24 V DC systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 55 V maximum - supports full 24 V automotive battery transient margin (ISO 7637-2 Pulse 5a up to 58 V). |
| ID (continuous) | 46 A at Tmb = 25 °C - enables high-current loads like radiator fans or headlamp drivers without external heatsinking at moderate ambient. |
| RDS(on) | 20–24 mΩ at VGS = 5 V, Tj = 25 °C - minimizes conduction loss (≤2.3 W at 10 A), critical for thermal management in sealed ECUs. |
| EAS | 76 mJ non-repetitive avalanche energy - withstands inductive kickback from solenoid or motor turn-off without external snubbers. |
| Tj max | 175 °C - allows operation in engine bay environments with sustained high ambient temperatures. |
| Rth(j-mb) | 1.4 K/W - enables efficient heat transfer to PCB copper pour or heatsink, reducing thermal derating in compact layouts. |
| VGS(th) | 1.0–2.0 V at Tj = 25 °C - ensures reliable turn-on with standard logic outputs and stable threshold across automotive temperature range. |
Pinout & Package
Package: D2PAK (SOT404), plastic single-ended surface-mounted package with isolated mounting base electrically connected to drain. Dimensions per IEC JEDEC outline: 15.8 × 10.3 × 4.5 mm (L × W × H), with 2.54 mm lead pitch and one cropped lead.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (G) | Gate | Controls channel conduction; accepts 5 V logic-level drive; requires <10 Ω series resistance to limit ringing during fast switching. |
| 2 (D) | Drain | Main high-side power path; electrically tied to mounting base for low-inductance thermal/power connection to PCB heatsink area. |
| 3 (S) | Source | Power return node; referenced for gate drive; internal source inductance (7.5 nH) impacts switching loss and EMI in high-dI/dt applications. |
| Mounting Base (mb) | Drain Connection | Exposed copper pad soldered to PCB thermal plane; provides primary thermal path (Rth(j-mb) = 1.4 K/W) and low-impedance drain current return. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive grade-1 (-40 to +125 °C ambient) and grade-0 (-40 to +150 °C ambient) operation with extended lifetime testing. |
| Logic-level gate drive | Guaranteed turn-on with VGS ≥ 4.5 V, enabling direct MCU GPIO control without gate driver ICs in cost-sensitive modules. |
| Low RDS(on) at 5 V | 20–24 mΩ at 25 °C junction temperature reduces I²R losses by >30% vs. standard MOSFETs requiring 10 V gate drive. |
| 175 °C junction rating | Supports operation in under-hood locations where ambient exceeds 105 °C, extending design margin beyond typical industrial MOSFET limits. |
| High avalanche ruggedness | 76 mJ unclamped inductive energy handling eliminates need for external TVS or clamping diodes in relay/solenoid drive circuits. |
Applications
| Automotive HVAC Blower Control | Truck Headlamp Power Switching |
|---|---|
Use Scenario: PWM-controlled 24 V DC blower motor in cab HVAC system operating continuously at 35 A peak load with ambient up to 85 °C. IC Role / Device Role / Timing Role: High-side power switch managing motor current; handles 10 kHz PWM with minimal switching loss due to low Ciss (1361 pF typ) and fast tf (80 ns). Use Value: Eliminates need for gate driver IC and external heatsink-reducing BOM count and board space while maintaining <1.5 °C/W thermal rise at full load. |
Use Scenario: On/off switching of dual 24 V halogen headlamps with inrush current up to 40 A and thermal cycling from -40 °C to +125 °C. IC Role / Device Role / Timing Role: Robust load switch absorbing lamp filament inrush and inductive kickback; body diode recovers in 50 ns with 85 nC Qr. Use Value: Prevents contact welding in mechanical relays and extends system lifetime by replacing electromechanical components with solid-state reliability. |
| Commercial Vehicle Starter Solenoid Interface | Off-Highway Equipment Fuel Pump Driver |
Use Scenario: 12 V starter solenoid actuation in heavy-duty trucks, subject to ISO 16750-2 load dump transients and vibration-induced stress. IC Role / Device Role / Timing Role: Low-side switch controlling solenoid coil; withstands 55 V VDS rating and 76 mJ avalanche energy during coil de-energization. Use Value: Replaces discrete transistor + flyback diode solution, reducing footprint by 40% and eliminating diode forward drop losses. |
Use Scenario: 24 V brushless fuel pump controller in agricultural machinery, operating intermittently at 30 A with ambient up to 105 °C near engine block. IC Role / Device Role / Timing Role: High-efficiency power stage in half-bridge configuration; leverages 1.4 K/W Rth(j-mb) for direct PCB thermal coupling. Use Value: Enables conformal-coated, sealed module design without forced air cooling-meeting IP67 and MIL-STD-810G environmental requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel logic-level power MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STL220N4LF8AG | 40 V VDS, 220 A pulsed ID, RDS(on) = 1.2 mΩ @ 10 V - lower voltage rating but higher current capability and lower on-resistance at 10 V drive. | Requires 10 V gate drive; unsuitable for 55 V transients; better for high-current, low-voltage battery systems (e.g., 12 V start-stop). | Select when gate drive is ≥10 V and VDS stress remains ≤40 V; avoid in 24 V automotive with load dump. |
| IRF1404ZLPbF | 40 V VDS, 195 A pulsed ID, RDS(on) = 3.7 mΩ @ 10 V - no AEC-Q101 qualification; RDS(on) rises sharply below 10 V gate drive. | Not automotive-qualified; lacks guaranteed 5 V turn-on; higher VGS(th) (2–4 V) increases risk of partial turn-on in noisy environments. | Acceptable only for non-safety-critical industrial use; not recommended for OEM automotive designs requiring AEC compliance. |
Compared with STL220N4LF8AG and IRF1404ZLPbF, the BUK9624-55A uniquely balances 55 V rating, 5 V logic compatibility, AEC-Q101 qualification, and 175 °C operation-making it the only option among the three validated for under-hood 24 V load switching with zero gate-driver overhead.
Availability
BUK9624-55A,118 is available at Aetrix Electronics and suitable for automotive HVAC control, commercial vehicle lighting systems, starter solenoid interfaces, and off-highway fuel pump drivers requiring stable component supply across extended product lifecycles.
Supply support for BUK9624-55A,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 specializing in high-volume, high-reliability discrete, logic, and MOSFET solutions, with leadership in automotive-grade components and process technology.
The BUK9624-55A belongs to Nexperia's TrenchMOS logic-level automotive power MOSFET product line, engineered specifically for robust, low-loss switching in 12 V/24 V automotive power distribution networks.
FAQ
Is BUK9624-55A,118 suitable for high-frequency PWM applications above 20 kHz?
Yes-the device has tf = 80 ns and td(off) = 82.5 ns, enabling clean switching at 20–50 kHz in motor control. Its Ciss = 1361 pF (typ) and low internal inductances (LS = 7.5 nH) minimize ringing, but gate drive strength ≥1 A peak is recommended to maintain efficiency at higher frequencies.
What is the maximum safe operating temperature for continuous 46 A drain current?
46 A is specified at Tmb = 25 °C mounting base temperature. At Tmb = 100 °C, the rated continuous current drops to 33 A per limiting values table. For sustained 46 A operation, thermal design must maintain Tmb ≤25 °C using ≥100 cm² 2-oz copper pour or external heatsink.
Does the mounting base require electrical isolation from the PCB ground plane?
No-the mounting base is internally connected to the drain terminal. It must be soldered directly to a large copper area serving as both thermal sink and high-current drain return path. Electrical isolation would compromise thermal performance and violate safe operating area limits.
Can BUK9624-55A,118 replace a mechanical relay in automotive lighting circuits?
Yes-its 76 mJ avalanche energy rating and 188 A peak drain current (IDM) safely absorb lamp filament inrush and inductive kickback. Unlike relays, it offers silent operation, infinite cycle life, and no contact bounce, provided gate drive is properly decoupled and layout minimizes parasitic inductance.
BUK9624-55A,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:
- Obsolete
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 55 V
- Current - Continuous Drain (Id) @ 25°C:
- 46A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 4.5V, 10V
- Rds On (Max) @ Id, Vgs:
- 21.7mOhm @ 25A, 10V
- Vgs(th) (Max) @ Id:
- 2V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- -
- Vgs (Max):
- ±10V
- Input Capacitance (Ciss) (Max) @ Vds:
- 1815 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 105W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
BUK9624-55A,118 FAQ
1.How can I place an order for BUK9624-55A,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK9624-55A,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 BUK9624-55A,118 reliable?
The price and inventory of BUK9624-55A,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK9624-55A,118 is usually 5 days.
3.What payment methods are accepted for BUK9624-55A,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK9624-55A,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK9624-55A,118?
BUK9624-55A,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK9624-55A,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 BUK9624-55A,118?
For technical support, including BUK9624-55A,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK9624-55A,118 requirements.
6.How does Aetrix verify that BUK9624-55A,118 is sourced from the original manufacturer or authorized distributors?
All BUK9624-55A,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 BUK9624-55A,118 meets industry standards.
7.What is the process for return or replacement of BUK9624-55A,118?
All BUK9624-55A,118 units undergo pre-shipment inspection (PSI). If there is an issue with BUK9624-55A,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 BUK9624-55A,118 part is unused and in its original packaging.
Return procedure for BUK9624-55A,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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