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Nexperia USA Inc. BUK7222-55A,118
- Part No.:
- BUK7222-55A,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FETs, MOSFETs
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
BUK7222-55A,118.pdf
- Description:
- MOSFET N-CH 55V 48A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:2,852
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Product details
Overview
BUK7222-55A,118 from Nexperia is an AEC-Q101 qualified N-channel TrenchMOS standard-level power MOSFET in DPAK (SOT428) package, designed for automotive-critical 12 V/24 V load switching. It delivers 48 A continuous drain current at 25 °C mounting base temperature, 44 mΩ RDS(on) at 175 °C junction temperature, and 160 mJ unclamped avalanche energy - enabling robust operation in motor, lamp, and solenoid control circuits.
For engineers reviewing the BUK7222-55A datasheet, BUK7222-55A pinout, BUK7222-55A application, or BUK7222-55A equivalent, this device is selected for thermally demanding automotive power stages where gate drive compatibility with 10 V logic, 175 °C junction rating, and low conduction loss are mandatory design requirements.
Technical Context
This MOSFET uses TrenchMOS technology to achieve low on-resistance while maintaining ruggedness against unclamped inductive switching events. Its gate threshold voltage (VGS(th)) ranges from 1 V at 175 °C to 4.4 V at −55 °C, ensuring reliable turn-on across full automotive temperature range without overdrive risk.
The device features a thermally optimized DPAK package with mounting base electrically connected to drain, delivering 1.5 K/W junction-to-mounting-base thermal resistance. Its dynamic parameters - including 1200 pF typical input capacitance, 74 ns rise time, and 45 ns reverse recovery time - support efficient hard-switching in DC-DC converters and motor drivers up to 100 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 55 V maximum drain-source voltage - supports 12 V/24 V automotive systems with margin against load dump transients. |
| ID (continuous) | 48 A at Tmb = 25 °C - enables high-current loads like starter relays or HVAC blowers without external heatsinking. |
| RDS(on) | 19–22 mΩ at 25 °C / 44 mΩ at 175 °C - minimizes conduction loss and self-heating during sustained operation. |
| EAS | 160 mJ non-repetitive avalanche energy - withstands inductive kickback from solenoids and brushed motors without failure. |
| Tj max | 175 °C maximum junction temperature - certified for under-hood environments per AEC-Q101 Grade 0. |
| Rth(j-mb) | 1.5 K/W junction-to-mounting-base thermal resistance - allows direct PCB copper pour thermal coupling for high-power dissipation. |
| Ciss | 1200–1597 pF input capacitance - determines gate drive strength requirement and switching speed trade-off. |
Pinout & Package
Package: SOT428 (DPAK), plastic single-ended surface-mounted package with 3 leads (one lead cropped); mounting base (mb) electrically tied to drain terminal for low-inductance thermal path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (G) | Gate | Controls channel conduction; requires ≥10 V drive for full enhancement; threshold voltage shifts from 2–4 V (25 °C) to 1–3 V (175 °C). |
| 2 (D) | Drain | Main high-side current path; internally bonded to mounting base for thermal and electrical connection to heatsink or PCB copper pour. |
| 3 (S) | Source | Return path for load current; referenced to system ground in low-side switch configuration; hosts internal body diode cathode. |
| Mounting Base (mb) | Drain Extension | Electrically and thermally connected to drain; must be soldered to large copper area for thermal management and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive safety-critical applications including engine control, lighting, and chassis systems. |
| Low RDS(on) at high temperature | 44 mΩ at 175 °C ensures stable on-state performance in hot under-hood locations without derating. |
| Standard-level gate drive | Operates fully enhanced with 10 V gate-source voltage - compatible with common microcontroller GPIO and automotive driver ICs. |
| High avalanche ruggedness | 160 mJ unclamped energy rating enables reliable operation in inductive load switching without snubber circuits. |
| Thermally robust DPAK package | 1.5 K/W Rth(j-mb) supports >100 W power dissipation when mounted on ≥10 cm² 2-oz copper. |
Applications
| Automotive Lighting Control | Engine Cooling Fan Drive |
|---|---|
|
Use Scenario: PWM-controlled headlamp and fog lamp switching in modern vehicle lighting modules. IC Role / Device Role / Timing Role: Low-side power switch controlling 12 V lamp loads up to 40 A peak. Use Value: 44 mΩ RDS(on) at 175 °C prevents thermal runaway during extended high-duty-cycle operation. |
Use Scenario: Variable-speed control of brushless DC cooling fans in engine bay. IC Role / Device Role / Timing Role: High-current half-bridge low-side switch in fan motor driver stage. Use Value: 160 mJ avalanche energy absorbs back-EMF spikes during rapid fan deceleration. |
| Transmission Solenoid Driver | Power Distribution Module |
|
Use Scenario: Driving 24 V transmission shift solenoids requiring precise current regulation and fast response. IC Role / Device Role / Timing Role: Current-regulated switch with integrated current sense feedback path. Use Value: 74 ns rise time and 40 ns fall time enable accurate 1–20 kHz PWM current shaping. |
Use Scenario: Solid-state replacement for mechanical relays in 12 V/24 V battery distribution units. IC Role / Device Role / Timing Role: Main load disconnect switch with diagnostic current monitoring capability. Use Value: 175 °C junction rating ensures uninterrupted operation during prolonged high-temperature battery charging cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel automotive power MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STL220N4F7AG | 40 V VDS, 220 A ID, 1.4 mΩ RDS(on) - higher current, lower voltage rating. | Targeted at 12 V EV auxiliary systems; unsuitable for 24 V or load-dump-prone circuits. | Select only if system voltage never exceeds 32 V and peak current >100 A is required. |
| IRF1404ZPBF | 40 V VDS, 202 A ID, 3.8 mΩ RDS(on), no AEC-Q101 qualification. | Industrial-grade only; lacks automotive reliability validation and high-temp RDS(on) characterization. | Acceptable for non-safety-critical 12 V industrial controls but not for OEM automotive designs. |
Compared with STL220N4F7AG and IRF1404ZPBF, the BUK7222-55A uniquely balances 55 V rating, AEC-Q101 compliance, and 44 mΩ RDS(on) at 175 °C - making it the only option qualified for thermally constrained 24 V automotive power switching where both voltage margin and high-temperature stability are mandatory.
Availability
BUK7222-55A,118 is available at Aetrix Electronics and suitable for automotive lighting control, engine cooling fan drive, and transmission solenoid actuation requiring stable component supply across long production lifecycles.
Supply support for BUK7222-55A,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 focused on essential efficiency technologies, delivering high-performance, high-reliability discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.
The BUK7222-55A belongs to Nexperia's AEC-Q101-qualified TrenchMOS automotive power portfolio, engineered specifically for robust, thermally resilient 12 V/24 V load switching in harsh under-hood environments.
FAQ
Is BUK7222-55A,118 suitable for high-frequency PWM motor control?
Yes - with 74 ns rise time, 40 ns fall time, and 1200 pF input capacitance, it supports PWM frequencies up to 100 kHz in brushed DC motor drives. Its 1.5 K/W thermal resistance and 175 °C rating ensure stable operation during sustained high-duty-cycle modulation without thermal throttling.
What is the recommended gate resistor value for driving BUK7222-55A,118?
A 10 Ω external gate resistor is specified in the datasheet for turn-on/turn-off timing measurements. For most automotive applications, 5–22 Ω provides optimal trade-off between switching loss and EMI; values below 5 Ω increase dI/dt-induced ringing, while above 47 Ω causes excessive switching losses at >20 kHz.
Does the mounting base require electrical isolation from the PCB ground plane?
No - the mounting base is electrically connected to the drain terminal. When used in low-side configuration, it must be isolated from ground via insulating thermal pad or ceramic substrate. In high-side configurations, it connects directly to the positive rail and requires appropriate creepage/clearance spacing per ISO 26262.
Can BUK7222-55A,118 replace older BUK7222-55B variants?
Yes - the BUK7222-55A,118 is a direct replacement for BUK7222-55B with identical pinout, package, and electrical specifications. The revision reflects updated test methodology and documentation format; no functional or reliability differences exist between the two versions.
BUK7222-55A,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:
- 48A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 22mOhm @ 25A, 10V
- Vgs(th) (Max) @ Id:
- 4V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- -
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 1597 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 103W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
BUK7222-55A,118 FAQ
1.How can I place an order for BUK7222-55A,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK7222-55A,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 BUK7222-55A,118 reliable?
The price and inventory of BUK7222-55A,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK7222-55A,118 is usually 5 days.
3.What payment methods are accepted for BUK7222-55A,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK7222-55A,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK7222-55A,118?
BUK7222-55A,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK7222-55A,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 BUK7222-55A,118?
For technical support, including BUK7222-55A,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK7222-55A,118 requirements.
6.How does Aetrix verify that BUK7222-55A,118 is sourced from the original manufacturer or authorized distributors?
All BUK7222-55A,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 BUK7222-55A,118 meets industry standards.
7.What is the process for return or replacement of BUK7222-55A,118?
All BUK7222-55A,118 units undergo pre-shipment inspection (PSI). If there is an issue with BUK7222-55A,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 BUK7222-55A,118 part is unused and in its original packaging.
Return procedure for BUK7222-55A,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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