Nexperia USA Inc. BUK9E06-55A,127
- Part No.:
- BUK9E06-55A,127
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FETs, MOSFETs
- Package:
- TO-262-3 Long Leads, I2PAK, TO-262AA
- Datasheet:
-
BUK9E06-55A,127.pdf
- Description:
- MOSFET N-CH 55V 75A I2PAK
- Quantity:
- Payment:

- Shipping:

Inventory:2,614
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Product details
Overview
BUK9E06-55A from Nexperia is a logic-level N-channel TrenchMOS FET in I2PAK (SOT226) package, rated for 55 V VDS, 75 A continuous drain current at Tmb = 25 °C, and 175 °C junction temperature. It delivers 4.8 mΩ RDS(on) at VGS = 10 V and is AEC-Q101 qualified for automotive critical power switching.
For engineers reviewing the BUK9E06-55A datasheet, BUK9E06-55A pinout, BUK9E06-55A application, or BUK9E06-55A equivalent, this device supports high-current 12 V/24 V load control with low gate-drive voltage compatibility, thermal robustness in engine bay environments, and unclamped avalanche energy handling up to 1.1 J.
Technical Context
This MOSFET employs TrenchMOS technology to achieve low on-resistance and fast switching with gate threshold voltage of 1.0–2.0 V at 25 °C. Its internal drain and source inductances (2.5–4.5 nH and 7.5 nH) are specified for accurate SOA modeling in high-di/dt automotive circuits.
The device features an integrated source-drain diode with 0.85 V forward voltage at 30 A and 80 ns reverse recovery time, enabling synchronous rectification and freewheeling in motor drive H-bridges without external diodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 55 V - Maximum blocking voltage for 12 V/24 V automotive systems with transient margin |
| RDS(on) | 4.8 mΩ (typ) at VGS = 10 V, 25 °C - Enables <1 W conduction loss at 45 A DC load current |
| ID (cont) | 75 A at Tmb = 25 °C - Package-limited current suitable for high-power solenoid and lamp drivers |
| EAS | 1.1 J (unclamped) - Supports single-pulse inductive energy absorption in relay and motor turn-off |
| Tj max | 175 °C - Enables operation in under-hood environments without derating below ambient 125 °C |
| Rth(j-mb) | 0.5 K/W - Low thermal resistance enables direct heatsink mounting for high-power dissipation |
| VGS(th) | 1.5 V (typ) - Compatible with 3.3 V and 5 V microcontroller GPIOs without level-shifting |
Pinout & Package
Package: I2PAK (SOT226), plastic single-ended TO-262 variant with isolated mounting base electrically connected to drain.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (G) | Gate | Logic-level input terminal; accepts 3.3 V/5 V drive; 6500 pF input capacitance affects gate driver sizing |
| 2 (D) | Drain | Main high-side switching node; internally bonded to mounting base for low-inductance heatsink coupling |
| 3 (S) | Source | Power return path; 7.5 nH internal inductance impacts switching waveform fidelity in high-frequency PWM |
| Mounting Base (mb) | Drain Connection | Electrically tied to drain pin; provides primary thermal path to heatsink; requires isolation if drain is not chassis-ground referenced |
Key Features
| Feature | Design Value |
|---|---|
| Logic-level gate drive | Operates fully enhanced at VGS ≥ 4.5 V, eliminating need for gate driver ICs in MCU-driven 12 V systems |
| AEC-Q101 qualification | Validated for automotive safety-critical applications including body control modules and engine management subsystems |
| 175 °C junction rating | Permits uninterrupted operation in high-ambient under-hood locations without thermal shutdown or derating |
| Low RDS(on) × Qg product | Enables efficient high-frequency switching in BLDC motor inverters with reduced gate drive losses |
| Unclamped avalanche ruggedness | Withstands 1.1 J single-pulse energy, allowing reliable operation in inductive load switching without snubbers |
Applications
| Automotive Body Control Module | 12 V/24 V Solenoid Driver |
|---|---|
|
Use Scenario: Controlling door lock actuators, headlight relays, and HVAC flaps in modern vehicle BCMs. IC Role / Device Role / Timing Role: High-side power switch managing 10–40 A resistive/inductive loads with PWM or on/off control. Use Value: Eliminates external flyback diode and reduces PCB area by integrating robust avalanche capability and low RDS(on). |
Use Scenario: Driving fuel injectors, transmission shift solenoids, and ABS modulator valves in powertrain systems. IC Role / Device Role / Timing Role: Fast-turning, thermally stable switch delivering precise 1–10 ms pulse widths at 12 V/24 V. Use Value: 80 ns trr and 235 ns tf enable clean current commutation; 175 °C rating ensures reliability across engine temperature cycles. |
| Off-Road Vehicle Lighting System | Industrial 24 V DC Motor Starter |
|
Use Scenario: Switching high-intensity LED arrays and halogen work lamps in construction and agricultural equipment. IC Role / Device Role / Timing Role: Low-loss main power switch handling 30–60 A steady-state current with surge tolerance. Use Value: 4.8 mΩ RDS(on) limits conduction loss to <1.1 W at 48 A, reducing heatsink requirements in sealed enclosures. |
Use Scenario: Starting brushed DC motors in material handling systems, pumps, and compressors. IC Role / Device Role / Timing Role: High-current inrush limiter and run-control switch with peak current capability up to 616 A. Use Value: 616 A IDM and 300 W Ptot support motor stall conditions without failure; I2PAK package enables mechanical robustness in vibration-prone environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel logic-level power switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STL220N4LF6AG | 60 V VDS, 220 A ID, 1.8 mΩ RDS(on) - higher current, lower RDS(on), but larger H2PAK-6 package | Requires larger PCB footprint and different heatsink interface; better suited for 48 V systems | Select when >100 A continuous current or <2 mΩ RDS(on) is required; verify gate drive strength for 22 nC Qg |
| IRF1404ZLPBF | 40 V VDS, 184 A ID, 3.8 mΩ RDS(on) - lower voltage rating, no AEC-Q101 qualification | Not qualified for automotive use; limited to industrial 12 V/24 V non-safety-critical loads | Choose only for cost-sensitive non-automotive applications where 55 V margin is unnecessary and qualification is not mandated |
Compared with STL220N4LF6AG and IRF1404ZLPBF, the BUK9E06-55A uniquely balances AEC-Q101 compliance, 55 V rating, compact I2PAK footprint, and 75 A capability-making it optimal for space-constrained automotive 12 V/24 V modules requiring production-grade reliability.
Availability
BUK9E06-55A is available at Aetrix Electronics and suitable for automotive body control modules, 24 V solenoid actuation, and off-road lighting systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BUK9E06-55A 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 focused on high-volume, high-reliability discrete, logic, and MOSFET solutions, with leadership in automotive-qualified components.
The BUK9E series targets automotive power switching applications, designed specifically for AEC-Q101 compliance, thermally demanding environments, and logic-level gate drive simplicity in 12 V/24 V systems.
FAQ
What is the maximum continuous drain current for BUK9E06-55A at 100 °C mounting base temperature?
At Tmb = 100 °C, the continuous drain current is derated to 75 A per Figure 1 in the datasheet. This limit is package-constrained-not silicon-limited-and remains constant from 25 °C to 100 °C before declining above that point due to thermal resistance effects.
Does BUK9E06-55A require an external freewheeling diode when driving inductive loads?
No external diode is required for basic freewheeling: the integrated source-drain diode has 0.85 V forward voltage at 30 A and 80 ns reverse recovery time. However, for high-efficiency synchronous rectification or fast-recovery requirements, an external Schottky diode may still be preferred.
Can BUK9E06-55A be driven directly from a 3.3 V microcontroller GPIO?
Yes-its typical VGS(th) is 1.5 V and RDS(on) is 6.3 mΩ at VGS = 5 V and 25 °C. At 3.3 V, RDS(on) rises to ~10–12 mΩ, which is acceptable for ≤30 A loads where <1 W conduction loss is tolerable; verify thermal margin in final layout.
What is the safe operating area (SOA) limitation for repetitive pulsed operation?
The SOA curve (Figure 3) shows that at VDS = 30 V, the device supports 75 A continuous or 616 A for 10 µs pulses. For repetitive pulses, thermal accumulation must be evaluated using Zth(j-mb) = 0.5 K/W and duty cycle; sustained >10% duty cycle at >50 A requires active heatsinking.
BUK9E06-55A,127 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- TrenchMOS™
- Package/Case:
- TO-262-3 Long Leads, I2PAK, TO-262AA
- Packaging:
- Tube
- 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):
- 4.5V, 10V
- Rds On (Max) @ Id, Vgs:
- 5.8mOhm @ 25A, 10V
- Vgs(th) (Max) @ Id:
- 2V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- -
- Vgs (Max):
- ±15V
- Input Capacitance (Ciss) (Max) @ Vds:
- 8600 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 300W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- I2PAK
BUK9E06-55A,127 FAQ
1.How can I place an order for BUK9E06-55A,127 through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK9E06-55A,127 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 BUK9E06-55A,127 reliable?
The price and inventory of BUK9E06-55A,127 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK9E06-55A,127 is usually 5 days.
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Once your BUK9E06-55A,127 order is processed, you will receive an email with the shipment details and tracking number.
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5.How can I obtain technical support or documentation for BUK9E06-55A,127?
For technical support, including BUK9E06-55A,127 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK9E06-55A,127 requirements.
6.How does Aetrix verify that BUK9E06-55A,127 is sourced from the original manufacturer or authorized distributors?
All BUK9E06-55A,127 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 BUK9E06-55A,127 meets industry standards.
7.What is the process for return or replacement of BUK9E06-55A,127?
All BUK9E06-55A,127 units undergo pre-shipment inspection (PSI). If there is an issue with BUK9E06-55A,127, 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 BUK9E06-55A,127 part is unused and in its original packaging.
Return procedure for BUK9E06-55A,127:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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