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Nexperia USA Inc. BUK7606-55B,118
- Part No.:
- BUK7606-55B,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FETs, MOSFETs
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
BUK7606-55B,118.pdf
- Description:
- MOSFET N-CH 55V 75A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:11
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Product details
Overview
BUK7606-55B from Nexperia is a standard-level N-channel TrenchMOS FET in D2PAK (SOT404) package, rated for 55 V VDS, 75 A continuous drain current at Tmb = 25 °C, and 175 °C junction temperature, designed for automotive-critical power switching in 12 V/24 V systems.
For engineers reviewing the BUK7606-55B datasheet, BUK7606-55B pinout, BUK7606-55B application, or BUK7606-55B equivalent, this device supports thermally demanding automotive loads with Q101 compliance, low RDS(on) of 5.1 mΩ at 25 °C, and unclamped avalanche energy rating of 680 mJ.
Technical Context
This MOSFET uses TrenchMOS technology to achieve low conduction losses and stable performance across -55 °C to +175 °C operating range. Its gate threshold voltage (VGS(th)) ranges from 2–4 V at 25 °C and remains functional down to 1 V at 175 °C, enabling robust turn-on with standard 10 V gate drive.
The device features integrated source-drain diode with 0.85 V forward voltage at 25 A and 73 ns reverse recovery time, supporting inductive load commutation. Thermal resistance from junction to mounting base is 0.59 K/W, optimized for high-power PCB-mount thermal management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 55 V - Maximum drain-source blocking voltage for 12 V/24 V automotive rail protection |
| RDS(on) | 5.1 mΩ (typ.) at VGS = 10 V, ID = 25 A, Tj = 25 °C - Enables <1 W conduction loss at 75 A |
| ID (cont.) | 75 A at Tmb = 25 °C - Package-limited continuous current suitable for high-side motor/solenoid drivers |
| EAS | 680 mJ - Unclamped avalanche energy rating supports inductive load switching without external snubbers |
| Tj max | 175 °C - Qualified for under-hood automotive environments per AEC-Q101 |
| QGD | 19 nC - Gate-drain charge determines switching speed and Miller-effect immunity in hard-switching topologies |
| Rth(j-mb) | 0.59 K/W - Low junction-to-mounting-base thermal resistance enables direct heatsink attachment via metal tab |
Pinout & Package
Package: D2PAK (SOT404), plastic single-ended surface-mounted package with isolated mounting base connected to drain; 3 leads (lead 2 cropped).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (G) | Gate | Control terminal; requires 10 V drive for full enhancement; gate leakage <100 nA at ±20 V |
| 2 (D) | Drain | Not externally accessible - internally connected to mounting base; primary high-side power path |
| 3 (S) | Source | Power return node; referenced for gate drive; internal source inductance 7.5 nH affects switching ringing |
| Mounting Base (mb) | Drain (thermal & electrical) | Electrically tied to drain; provides primary thermal path to heatsink; must be electrically isolated from PCB ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive safety-critical applications including engine control and body electronics |
| 175 °C junction rating | Enables operation in under-hood environments without derating in most thermal layouts |
| Low RDS(on) (5.1 mΩ) | Reduces conduction losses by >30% vs. comparable 55 V MOSFETs, improving system efficiency in 12 V/24 V loads |
| Standard-level gate drive | Turns on fully with 10 V logic-compatible sources-no level-shifting required in MCU-driven circuits |
| Unclamped avalanche ruggedness | 680 mJ rating allows safe operation during inductive flyback events without external clamping components |
Applications
| Automotive Body Control Module | 12 V DC Motor Driver |
|---|---|
|
Use Scenario: Switching power to HVAC actuators, door locks, and window lift motors in modern vehicle BCMs. IC Role / Device Role / Timing Role: High-side load switch controlling 12 V inductive loads with PWM duty cycling up to 20 kHz. Use Value: 175 °C rating ensures reliability in sealed BCM enclosures; 680 mJ avalanche energy absorbs back-EMF without snubber diodes. |
Use Scenario: Driving brushed DC fans and radiator cooling pumps in engine bay locations. IC Role / Device Role / Timing Role: N-channel high-side switch with gate driven by isolated driver IC; handles 75 A peak inrush current. Use Value: 5.1 mΩ RDS(on) limits power dissipation to <3 W at 75 A, reducing heatsink size and cost. |
| 24 V Commercial Vehicle Lighting | Industrial Solenoid Actuator |
|
Use Scenario: Controlling LED headlamp arrays and auxiliary lighting in trucks and buses with 24 V nominal supply. IC Role / Device Role / Timing Role: Low-loss power switch in constant-current LED driver output stage; operates with 100% duty cycle. Use Value: 0.59 K/W Rth(j-mb) enables direct bolt-down to chassis, eliminating need for thermal interface pads in space-constrained lamp housings. |
Use Scenario: Driving hydraulic solenoids in agricultural machinery and construction equipment control valves. IC Role / Device Role / Timing Role: Robust high-side switch handling repetitive 100 ms pulses with 582 A peak surge current capability. Use Value: Q101 qualification guarantees long-term reliability in vibration-prone environments; 73 ns trr minimizes cross-conduction risk in half-bridge configurations. |
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 |
|---|---|---|---|
| STL220N5LF8AG | 60 V VDS, 220 A ID, 1.8 mΩ RDS(on), PowerFLAT 8x8 package, no exposed drain tab | Higher current capacity but requires PCB copper area for thermal management instead of mechanical heatsinking | Select when board-level thermal design favors large copper pour over bolted heatsinks |
| IRF1404ZPBF | 40 V VDS, 184 A ID, 3.8 mΩ RDS(on), TO-220AB package, non-AEC qualified | Lacks automotive qualification and 175 °C rating; lower voltage rating limits use to 12 V only | Select only for non-automotive industrial prototypes where cost outweighs qualification requirements |
Compared with STL220N5LF8AG and IRF1404ZPBF, BUK7606-55B uniquely balances AEC-Q101 compliance, 55 V rating, D2PAK thermal performance, and gate-drive compatibility-making it optimal for production automotive 12 V/24 V high-side switching where qualification and thermal robustness are mandatory.
Availability
BUK7606-55B is available at Aetrix Electronics and suitable for automotive body control modules, 12 V/24 V motor drives, and industrial solenoid actuation requiring stable component supply across multi-year vehicle production cycles.
Supply support for BUK7606-55B 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 and logic devices, with leadership in automotive-qualified MOSFETs and ESD protection.
The BUK7606-55B belongs to Nexperia's TrenchMOS automotive power portfolio, engineered specifically for AEC-Q101-compliant high-side switching in thermally constrained 12 V/24 V vehicle subsystems.
FAQ
Is BUK7606-55B suitable for high-side switching with 3.3 V microcontroller GPIO?
No. The gate threshold voltage (VGS(th)) is 2–4 V at 25 °C and drops to 1 V at 175 °C, but full enhancement requires VGS ≥10 V to achieve rated RDS(on). A 3.3 V GPIO cannot reliably turn on the device; a gate driver or level shifter is mandatory for high-side configuration.
What is the maximum allowable mounting base temperature for continuous 75 A operation?
The datasheet specifies 75 A continuous drain current at Tmb = 25 °C. As shown in Figure 1, current derates linearly to zero at ~150 °C mounting base temperature. For sustained 75 A, Tmb must remain ≤25 °C-achievable only with active heatsinking or forced-air cooling.
Does the mounting base require electrical isolation from the PCB ground plane?
Yes. The mounting base is electrically connected to the drain (pin 2), not source or ground. When bolted to a heatsink, it must be insulated from any grounded metal structure using mica or ceramic washers to prevent short circuits and ensure safe high-side operation.
Can BUK7606-55B replace BUZ70 in an existing 12 V automotive design?
Only with validation. BUZ70 is a 50 V, 33 A TO-220 device with higher RDS(on) (~22 mΩ). BUK7606-55B offers superior current rating (75 A), lower RDS(on) (5.1 mΩ), and AEC-Q101 qualification-but requires D2PAK layout changes, revised thermal design, and gate drive review due to different capacitance and switching behavior.
BUK7606-55B,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:
- 75A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 6mOhm @ 25A, 10V
- Vgs(th) (Max) @ Id:
- 4V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 64 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 5100 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 254W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
BUK7606-55B,118 FAQ
1.How can I place an order for BUK7606-55B,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK7606-55B,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 BUK7606-55B,118 reliable?
The price and inventory of BUK7606-55B,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK7606-55B,118 is usually 5 days.
3.What payment methods are accepted for BUK7606-55B,118?
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4.How is shipping managed for BUK7606-55B,118?
BUK7606-55B,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK7606-55B,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 BUK7606-55B,118?
For technical support, including BUK7606-55B,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK7606-55B,118 requirements.
6.How does Aetrix verify that BUK7606-55B,118 is sourced from the original manufacturer or authorized distributors?
All BUK7606-55B,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 BUK7606-55B,118 meets industry standards.
7.What is the process for return or replacement of BUK7606-55B,118?
All BUK7606-55B,118 units undergo pre-shipment inspection (PSI). If there is an issue with BUK7606-55B,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 BUK7606-55B,118 part is unused and in its original packaging.
Return procedure for BUK7606-55B,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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