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Nexperia USA Inc. BUK9212-55B,118
- Part No.:
- BUK9212-55B,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FETs, MOSFETs
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
BUK9212-55B,118.pdf
- Description:
- MOSFET N-CH 55V 75A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:4,994
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Product details
Overview
BUK9212-55B,118 from Nexperia is a logic-level N-channel TrenchMOS FET in SOT428 (DPAK) package, rated for 55 V drain-source voltage, 75 A continuous drain current at 25 °C mounting base temperature, and 185 °C junction temperature. It delivers 10.2 mΩ RDS(on) at VGS = 5 V and ID = 25 A, enabling efficient 12 V/24 V automotive load switching in thermally demanding environments.
For engineers reviewing the BUK9212-55B,118 datasheet, BUK9212-55B,118 pinout, BUK9212-55B,118 application, or BUK9212-55B,118 equivalent, key selection criteria include AEC-Q101 qualification, low 5 V gate drive compatibility, 167 W power dissipation capability, avalanche ruggedness (173 mJ), and thermal resistance of 0.95 K/W from junction to mounting base.
Technical Context
This device employs TrenchMOS technology to achieve low on-resistance with logic-level gate drive, eliminating need for gate driver ICs in 5 V microcontroller interfaces. Its 185 °C maximum junction temperature and AEC-Q101 qualification confirm suitability for under-hood automotive applications where thermal cycling and reliability are critical.
The SOT428 package integrates the mounting base directly to the drain, enabling low-inductance high-current paths and efficient heat transfer to PCB copper or heatsinks. Internal drain and source inductances are specified at 2.5 nH and 7.5 nH respectively, supporting fast switching with minimal ringing in motor and solenoid drive circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 55 V - Maximum blocking voltage for 12 V/24 V automotive systems with transient margin |
| ID (continuous) | 75 A at Tmb = 25 °C - Package-limited current enabling high-power load control without external heatsink in moderate airflow |
| RDS(on) | 10.2 mΩ typ at VGS = 5 V, ID = 25 A, Tj = 25 °C - Enables <1.3 W conduction loss at 35 A, reducing thermal design burden |
| Ptot | 167 W at Tmb = 25 °C - High power handling supports sustained operation in engine control units and body electronics |
| Rth(j-mb) | 0.95 K/W - Low thermal resistance allows direct mounting to metal-core PCB or heatsink for stable 185 °C junction operation |
| EAS | 173 mJ unclamped avalanche energy - Withstands inductive kickback from motors, solenoids, and lamps without external snubbers |
| QGD | 13 nC - Low gate-drain charge improves switching efficiency and reduces Miller-induced shoot-through risk in half-bridge configurations |
Pinout & Package
SOT428 (DPAK) plastic single-ended surface-mounted package with 3 leads (one lead cropped); mounting base (mb) electrically connected to drain and serves as primary thermal path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | G (Gate) | Control terminal accepting 5 V logic-level signals; threshold voltage 1.1–2.0 V enables direct MCU GPIO drive |
| 2 | D (Drain) | Main high-side current path; internally bonded to mounting base for low-inductance, high-current routing and thermal conduction |
| 3 | S (Source) | Return path for load current; referenced to system ground; internal source inductance 7.5 nH limits di/dt-related voltage spikes |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive safety-critical systems including engine management and ADAS power stages |
| Logic-level gate drive | VGS(th) = 1.5 V typ ensures full enhancement with standard 5 V microcontrollers, eliminating level-shifting circuitry |
| 185 °C junction rating | Enables operation in under-hood locations (e.g., transmission control modules) without derating at ambient up to 125 °C |
| Low RDS(on) @ 5 V | 10.2 mΩ at VGS = 5 V minimizes I²R losses in high-duty-cycle applications like HVAC blower control |
| High avalanche energy | 173 mJ EAS sustains repeated inductive switching events in solenoid and fuel injector drivers without degradation |
Applications
| Automotive Engine Control | Body Electronics Load Switching |
|---|---|
|
Use Scenario: Driving fuel injectors and ignition coils in gasoline/diesel ECUs under hood temperatures up to 125 °C ambient. IC Role / Device Role / Timing Role: High-side power switch controlling inductive loads with precise pulse-width modulated timing. Use Value: 173 mJ avalanche ruggedness absorbs coil flyback energy; 185 °C rating prevents thermal shutdown during extended idling. |
Use Scenario: Controlling headlamps, fog lamps, and interior lighting in centralized body control modules (BCM). IC Role / Device Role / Timing Role: Logic-compatible load switch enabling PWM dimming and diagnostics via microcontroller GPIO. Use Value: 10.2 mΩ RDS(on) limits power loss to <0.9 W at 30 A lamp current, reducing BCM thermal footprint. |
| 12 V/24 V Motor Drive | Industrial Solenoid Actuation |
|
Use Scenario: Driving radiator cooling fans, power window motors, and seat adjustment actuators in passenger vehicles. IC Role / Device Role / Timing Role: Bidirectional or unidirectional H-bridge half-bridge switch with fast turn-on/off for speed control. Use Value: 13 nC QGD and 101 ns rise time enable efficient 20 kHz PWM operation with minimal switching loss. |
Use Scenario: Controlling hydraulic/pneumatic solenoid valves in commercial vehicle braking and suspension systems. IC Role / Device Role / Timing Role: Robust high-current switch handling repetitive 100 ms–2 s duty cycles with high inrush currents. Use Value: 335 A peak drain current (10 µs) accommodates solenoid inrush surges; 0.95 K/W Rth(j-mb) maintains safe junction temp during burst operation. |
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 |
|---|---|---|---|
| STL220N5LF8AG | 60 V VDS, 220 A ID, 1.2 mΩ RDS(on) @ 10 V, but requires 10 V gate drive for optimal performance | Higher current capacity suits heavy-duty truck solenoids; not logic-level compatible without gate driver | Select when higher current and lower RDS(on) justify added gate drive complexity and cost |
| IRF1404ZLPBF | 40 V VDS, 180 A ID, 3.8 mΩ RDS(on) @ 10 V, no AEC-Q101 qualification, 175 °C max Tj | Limited to 12 V systems only; unsuitable for 24 V commercial vehicle applications or automotive safety-critical use | Acceptable for non-automotive industrial motor drives where AEC-Q101 and 24 V margin are not required |
Compared with STL220N5LF8AG and IRF1404ZLPBF, the BUK9212-55B,118 uniquely combines AEC-Q101 qualification, true 5 V logic-level operation, 55 V rating for 24 V system margin, and 185 °C junction capability-making it the only drop-in solution for thermally constrained automotive power switching without gate driver overhead.
Availability
BUK9212-55B,118 is available at Aetrix Electronics and suitable for automotive engine control units, body electronics modules, and 12 V/24 V motor drive systems requiring stable component supply across multi-year vehicle production lifecycles.
Supply support for BUK9212-55B,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, logic, and MOSFET solutions, spun off from NXP in 2017 and headquartered in Nijmegen, Netherlands.
The BUK9212-55B belongs to Nexperia's Automotive Logic-Level Power MOSFET product line, engineered specifically for AEC-Q101-compliant, high-temperature, high-current switching in 12 V and 24 V automotive subsystems.
FAQ
Is BUK9212-55B,118 suitable for 24 V commercial vehicle applications?
Yes. Its 55 V VDS rating provides 30 V transient margin above nominal 24 V systems, and its AEC-Q101 qualification, 185 °C junction rating, and 173 mJ avalanche energy meet ISO 16750-2 load dump and ISO 7637-2 pulse requirements for trucks and buses.
What is the maximum continuous drain current at 100 °C mounting base temperature?
At Tmb = 100 °C, the continuous drain current is 59 A per Figure 1 in the datasheet. This derating reflects thermal limits of the SOT428 package and ensures reliable operation without exceeding 185 °C junction temperature.
Does the mounting base require electrical isolation from the PCB?
No. The mounting base is electrically connected to the drain (pin 2), so it must be routed to the same net as the drain connection. Thermal interface material or solder paste may be applied between the base and a copper pour or heatsink, but no dielectric isolation is needed or recommended.
Can BUK9212-55B,118 replace older BUK9212-55B parts in existing designs?
Yes. The ',118' suffix denotes tape-and-reel packaging per JEDEC standard; electrically and thermally identical to the base BUK9212-55B. Pinout, RDS(on), avalanche rating, and thermal characteristics are unchanged-ensuring full form-fit-function compatibility.
BUK9212-55B,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):
- 55 V
- Current - Continuous Drain (Id) @ 25°C:
- 75A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 5V, 10V
- Rds On (Max) @ Id, Vgs:
- 10mOhm @ 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:
- 3519 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 167W (Tc)
- Operating Temperature:
- -55°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
BUK9212-55B,118 FAQ
1.How can I place an order for BUK9212-55B,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK9212-55B,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 BUK9212-55B,118 reliable?
The price and inventory of BUK9212-55B,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK9212-55B,118 is usually 5 days.
3.What payment methods are accepted for BUK9212-55B,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK9212-55B,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK9212-55B,118?
BUK9212-55B,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK9212-55B,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 BUK9212-55B,118?
For technical support, including BUK9212-55B,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK9212-55B,118 requirements.
6.How does Aetrix verify that BUK9212-55B,118 is sourced from the original manufacturer or authorized distributors?
All BUK9212-55B,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 BUK9212-55B,118 meets industry standards.
7.What is the process for return or replacement of BUK9212-55B,118?
All BUK9212-55B,118 units undergo pre-shipment inspection (PSI). If there is an issue with BUK9212-55B,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 BUK9212-55B,118 part is unused and in its original packaging.
Return procedure for BUK9212-55B,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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