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Nexperia USA Inc. BUK7219-55A,118
- Part No.:
- BUK7219-55A,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FETs, MOSFETs
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
BUK7219-55A,118.pdf
- Description:
- MOSFET N-CH 55V 55A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:7,542
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Product details
Overview
BUK7219-55A from Nexperia is a standard-level N-channel TrenchMOS FET in DPAK (SOT428) package, rated for 55 V VDS, 55 A continuous drain current at Tmb = 25 °C, and 38 mΩ RDS(on) at 10 V VGS and 175 °C junction temperature. It is AEC-Q101 qualified and designed for automotive-critical 12 V/24 V power switching applications including solenoids, lamps, and motors.
For engineers reviewing the BUK7219-55A datasheet, BUK7219-55A pinout, BUK7219-55A application, or BUK7219-55A equivalent, key selection criteria include its 175 °C thermal rating, low 16–19 mΩ RDS(on) at 25 °C, unclamped avalanche energy of 120 mJ, 1.3 K/W Rth(j-mb), and compatibility with standard 5 V gate drive sources.
Technical Context
This device employs TrenchMOS technology to achieve low conduction losses and high thermal robustness. Its gate threshold voltage ranges from 1 V at 175 °C to 4.4 V at –55 °C, enabling stable turn-on across automotive temperature extremes.
The integrated source-drain diode exhibits 0.85–1.2 V forward voltage at 25 A and 25 °C, with 48 ns reverse recovery time and 106 nC recovered charge-critical for inductive load commutation. Dynamic parameters include 1581 pF Ciss, 372 pF Coss, and fast switching with 16 ns td(on), 70 ns tr, 57 ns td(off), and 41 ns tf.
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) | 55 A at Tmb = 25 °C - enables high-current switching without external heatsinking in moderate-duty cycles |
| RDS(on) | 16–19 mΩ at VGS = 10 V, ID = 25 A, Tj = 25 °C - minimizes conduction loss and self-heating in steady-state operation |
| Rth(j-mb) | 1.3 K/W - allows efficient heat transfer to PCB copper or heatsink via mounting base, critical for thermal reliability |
| EAS | 120 mJ unclamped avalanche energy - sustains single-pulse inductive energy without failure during switch-off under fault conditions |
| VGS(th) | 2–4 V typical at 25 °C - ensures reliable turn-on with standard 5 V logic or microcontroller GPIO |
| QG | ~60 nC typical (inferred from Figure 10 at VDD = 14 V) - determines gate drive power and switching speed with 10 Ω external resistor |
Pinout & Package
Package: SOT428 (DPAK), plastic single-ended surface-mounted package with 3 leads (lead 2 cropped); mounting base (mb) electrically connected to drain for low-inductance thermal path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (G) | Gate | Controls channel conduction; requires ≤20 V gate-source voltage; low input capacitance enables fast switching with modest drive strength |
| 2 (d) | Drain | Main high-side power terminal; internally bonded to mounting base (mb) for thermal and electrical connection to heatsink or PCB pour |
| 3 (S) | Source | Power return path and reference for gate drive; internal source inductance of 7.5 nH affects switching ringing in high-dI/dt applications |
| mb | Mounting Base | Electrically tied to drain; provides primary thermal interface and mechanical anchoring; must be soldered to large copper area for rated power dissipation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-critical applications including engine control, body electronics, and ADAS power stages |
| 175 °C maximum junction temperature | Enables operation in under-hood environments without derating in most thermal layouts |
| Standard-level gate drive (5 V compatible) | Eliminates need for level-shifting circuitry when driven directly by 5 V MCUs or logic buffers |
| Low RDS(on) with TrenchMOS | Reduces I²R losses by >30% vs. planar MOSFETs of comparable voltage rating, improving system efficiency |
| Unclamped avalanche ruggedness | Withstands 120 mJ single-pulse energy-essential for driving inductive loads like fuel injectors and fan motors without snubbers |
Applications
| Fuel Injector Driver | Automotive HVAC Blower Control |
|---|---|
|
Use Scenario: High-speed switching of 12 V solenoid-based fuel injectors in gasoline direct injection engines. IC Role / Device Role / Timing Role: Low-side power switch controlling injector coil current with precise on-time accuracy and fast turn-off to limit fuel quantity. Use Value: 41 ns fall time and 48 ns diode trr minimize current tailing, enabling accurate pulse-width modulation down to 100 µs duty cycles. |
Use Scenario: PWM-controlled DC motor driver for cabin air blower fans in automotive HVAC modules. IC Role / Device Role / Timing Role: High-current, thermally robust low-side switch handling up to 40 A peak motor current during startup and stall conditions. Use Value: 175 °C rating and 1.3 K/W Rth(j-mb) allow sustained 30 A operation on 2 oz copper without active cooling, reducing BOM cost. |
| Headlamp LED Power Switch | Transmission Solenoid Controller |
|
Use Scenario: On/off control of high-brightness LED headlamp arrays in adaptive front-lighting systems (AFS). IC Role / Device Role / Timing Role: High-efficiency, low-noise power switch replacing mechanical relays to enable rapid dimming and diagnostics. Use Value: 16–19 mΩ RDS(on) limits conduction loss to <1.5 W at 30 A, avoiding thermal runaway in sealed lamp housings. |
Use Scenario: Precision current regulation for electro-hydraulic transmission pressure control solenoids in automatic gearboxes. IC Role / Device Role / Timing Role: Robust low-side switch delivering tightly controlled 0.5–2 A solenoid current with fast transient response. Use Value: 120 mJ avalanche energy absorbs back-EMF spikes during current interruption, eliminating need for external flyback diodes in compact valve bodies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel automotive power switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STL220N4LF5AG | 40 V VDS, 220 A peak, 1.2 mΩ RDS(on) at 25 °C, PowerFLAT 5x6 package | Higher current capability but lower voltage rating; unsuitable for 24 V systems or load dump scenarios | Select only for 12 V battery systems requiring ultra-low RDS(on) and space-constrained layouts |
| IRF1404ZPBF | 40 V VDS, 202 A peak, 3.4 mΩ RDS(on), TO-220AB package, not AEC-Q101 qualified | Larger footprint, no automotive qualification, higher thermal resistance (1.5 K/W) | Acceptable for non-automotive industrial switching where qualification and thermal performance are secondary |
Compared with STL220N4LF5AG and IRF1404ZPBF, BUK7219-55A uniquely balances 55 V rating, AEC-Q101 compliance, DPAK thermal performance, and 5 V gate drive compatibility-making it the only drop-in solution for safety-critical 12 V/24 V automotive power stages requiring zero qualification overhead.
Availability
BUK7219-55A is available at Aetrix Electronics and suitable for automotive body control modules, engine management systems, and commercial vehicle lighting systems requiring stable component supply and long-term lifecycle support.
Supply support for BUK7219-55A 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 roots in Philips Semiconductors and leadership in automotive-qualified components.
BUK7219-55A belongs to Nexperia's TrenchMOS automotive power portfolio, engineered specifically for robust, thermally efficient switching in harsh automotive environments-from under-hood engine bays to chassis-mounted control units.
FAQ
Is BUK7219-55A suitable for 24 V commercial vehicle applications?
Yes. Its 55 V VDS rating provides 2× margin over nominal 24 V systems and withstands ISO 7637-2 Load Dump pulses up to 35 V. Combined with AEC-Q101 qualification and 175 °C operation, it meets stringent requirements for trucks, buses, and off-highway equipment power distribution.
What is the recommended PCB layout for thermal performance?
Maximize copper area under the mounting base (pin 2/mb) using ≥2 oz copper, thermal vias (≥8 × 0.3 mm) to inner ground planes, and solder mask defined pads. Maintain ≥1.5 mm clearance from other components. Do not isolate the mounting base-it must be electrically and thermally connected to the drain net and heatsink.
Does BUK7219-55A require a gate resistor for stability?
Yes. A 10 Ω series gate resistor is specified in the datasheet for switching characterization and suppresses oscillation caused by gate-drain Miller capacitance. For PWM frequencies above 20 kHz, use 5–15 Ω to balance EMI, switching loss, and dV/dt-induced shoot-through risk in half-bridge configurations.
Can BUK7219-55A replace older BUK7215-55B designs?
Yes, with identical pinout and improved specs: BUK7219-55A offers lower RDS(on) (16–19 mΩ vs. 20–24 mΩ), higher avalanche energy (120 mJ vs. 95 mJ), and tighter VGS(th) distribution. No layout or firmware changes are needed-direct drop-in upgrade for enhanced efficiency and ruggedness.
BUK7219-55A,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:
- 55A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 19mOhm @ 25A, 10V
- Vgs(th) (Max) @ Id:
- 4V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- -
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 2108 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 114W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
BUK7219-55A,118 FAQ
1.How can I place an order for BUK7219-55A,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK7219-55A,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 BUK7219-55A,118 reliable?
The price and inventory of BUK7219-55A,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK7219-55A,118 is usually 5 days.
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4.How is shipping managed for BUK7219-55A,118?
BUK7219-55A,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK7219-55A,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 BUK7219-55A,118?
For technical support, including BUK7219-55A,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK7219-55A,118 requirements.
6.How does Aetrix verify that BUK7219-55A,118 is sourced from the original manufacturer or authorized distributors?
All BUK7219-55A,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 BUK7219-55A,118 meets industry standards.
7.What is the process for return or replacement of BUK7219-55A,118?
All BUK7219-55A,118 units undergo pre-shipment inspection (PSI). If there is an issue with BUK7219-55A,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 BUK7219-55A,118 part is unused and in its original packaging.
Return procedure for BUK7219-55A,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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