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Nexperia USA Inc. BUK7Y12-55B,115
- Part No.:
- BUK7Y12-55B,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FETs, MOSFETs
- Package:
- SC-100, SOT-669
- Datasheet:
-
BUK7Y12-55B,115.pdf
- Description:
- MOSFET N-CH 55V 61.8A LFPAK56
- Quantity:
- Payment:
- Shipping:
Inventory:8,862
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Product details
Overview
BUK7Y12-55B from Nexperia is a standard-level N-channel TrenchMOS FET in LFPAK (SOT669) package, rated for 55 V VDS, 61.8 A continuous drain current at Tmb = 25 °C, and 175 °C junction temperature. It delivers 8.2 mΩ RDS(on) at VGS = 10 V and ID = 20 A (Tj = 25 °C), and is AEC-Q101 qualified for automotive critical power switching in 12 V/24 V systems.
For engineers reviewing the BUK7Y12-55B datasheet, BUK7Y12-55B pinout, BUK7Y12-55B application, or BUK7Y12-55B equivalent, this device serves as a thermally robust, gate-drive-compatible MOSFET for ABS actuators, solenoid drivers, and high-current load switching where junction temperature stability and avalanche energy handling (129 mJ unclamped) are design-critical.
Technical Context
This MOSFET uses Nexperia's High-Performance Automotive (HPA) TrenchMOS technology to achieve low on-resistance with stable thermal performance across -55 °C to +175 °C operating range. Its standard-level gate threshold (2–4 V) enables direct drive from 5 V or 3.3 V microcontrollers without level-shifting.
The device features an integrated source-drain diode with 0.85 V forward voltage at 25 A and 45 ns reverse recovery time, supporting synchronous rectification and inductive load commutation. Its 1.42 K/W junction-to-mounting-base thermal resistance ensures efficient heat transfer to PCB copper or heatsinks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 55 V - Maximum drain-source blocking voltage for 12 V/24 V automotive bus protection |
| RDS(on) | 8.2 mΩ (typ.) at VGS = 10 V, ID = 20 A, Tj = 25 °C - Enables <1 W conduction loss at 50 A |
| ID (cont) | 61.8 A at Tmb = 25 °C - Supports high-current motor/solenoid loads with minimal derating |
| EAS | 129 mJ (unclamped) - Withstands single-pulse inductive energy without failure in ABS or valve control |
| Rth(j-mb) | 1.42 K/W - Allows >70 W power dissipation with 100 °C ΔT to mounting base |
| QGD | 14.8 nC - Low gate-drain charge minimizes Miller-induced switching instability |
| VGS(th) | 2–4 V - Compatible with standard logic-level gate drivers and MCU GPIOs |
Pinout & Package
Package: LFPAK (SOT669), plastic single-ended surface-mounted package with exposed mounting base connected to drain; optimized for high-power density and thermal performance on PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 - S | Source | Three parallel source terminals reduce bond-wire inductance and improve current sharing |
| 4 - G | Gate | Single gate input with 35.2 nC total gate charge; designed for 10 Ω external gate resistor |
| Mounting base - D | Drain | Exposed copper pad electrically connected to drain; primary thermal path to PCB heatsink |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive safety-critical applications including ABS and engine control modules |
| 175 °C maximum junction temperature | Enables operation in under-hood environments without thermal shutdown in sustained 40 A loads |
| Standard-level gate drive | Operates fully enhanced with 5 V or 10 V gate voltage-no bootstrap or level-shift circuitry required |
| LFPAK thermal architecture | 1.42 K/W Rth(j-mb) provides 3× better thermal resistance than comparable SO-8 packages |
| Unclamped avalanche rating | 129 mJ EAS supports reliable switching of inductive solenoids and braking coils without snubbers |
Applications
| Advanced Braking Systems (ABS) | Automotive Solenoid Drivers |
|---|---|
Use Scenario: High-speed PWM control of hydraulic pressure valves in ABS modulators. IC Role / Device Role / Timing Role: Power switch for 24 V solenoid coils with 100 kHz switching capability and fast 22 ns fall time. Use Value: 45 ns diode reverse recovery and 14.8 nC QGD minimize shoot-through risk and switching losses during rapid polarity reversal. |
Use Scenario: On/off actuation of fuel injector or transmission shift solenoids in engine control units. IC Role / Device Role / Timing Role: High-current (up to 61.8 A) load switch with integrated body diode for freewheeling. Use Value: 0.85 V VSD at 25 A reduces diode conduction loss by >30% vs. discrete Schottky solutions. |
| 12 V/24 V Load Switching | Motor Control in HVAC Blowers |
Use Scenario: Centralized power distribution for lighting, pumps, and auxiliary loads in vehicle body control modules. IC Role / Device Role / Timing Role: High-side or low-side switch with overtemperature and overcurrent resilience. Use Value: 175 °C Tj(max) and 1.42 K/W thermal resistance allow sustained 50 A operation without forced cooling. |
Use Scenario: PWM-driven DC blower motors in automotive HVAC systems requiring smooth speed regulation. IC Role / Device Role / Timing Role: Low-RDS(on) power stage enabling >95% efficiency at full load. Use Value: 8.2 mΩ RDS(on) limits conduction loss to <2.1 W at 50 A, reducing thermal stress on PCB layout. |
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 |
|---|---|---|---|
| STL220N4F7AG | 40 V VDS, 220 A ID, 1.6 mΩ RDS(on), H2PAK-2 package | Higher current, lower voltage rating; requires redesign for 55 V surge margin | Select when higher peak current (>100 A) and lower RDS(on) are prioritized over 55 V headroom |
| IRF1404ZPBF | 40 V VDS, 186 A ID, 3.8 mΩ RDS(on), TO-220AB package | Non-AEC-Q101; larger footprint; no mounting-base thermal optimization | Acceptable for non-automotive industrial loads where qualification and thermal density are not required |
Compared with STL220N4F7AG and IRF1404ZPBF, BUK7Y12-55B uniquely balances 55 V rating, AEC-Q101 compliance, LFPAK thermal efficiency, and standard-level gate drive-making it optimal for space-constrained, thermally demanding automotive modules where reliability and qualification are mandatory.
Availability
BUK7Y12-55B is available at Aetrix Electronics and suitable for advanced braking systems (ABS), automotive solenoid drivers, and 12 V/24 V load switching requiring stable component supply, long-term automotive lifecycle support, and traceable sourcing.
Supply support for BUK7Y12-55B 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 essential semiconductors for automotive, industrial, and consumer markets, with leadership in MOSFETs, logic, and ESD protection.
The BUK7Y series belongs to Nexperia's High-Performance Automotive (HPA) TrenchMOS product line, engineered specifically for AEC-Q101-compliant power switching in engine control, chassis, and body electronics where thermal robustness and gate-drive simplicity are critical.
FAQ
Is BUK7Y12-55B suitable for high-frequency PWM motor control?
Yes. With 29.4 ns rise time, 22 ns fall time, and 14.8 nC QGD, it supports clean switching up to 100 kHz in brushed DC motor drives. Its low Crss (153–210 pF) and 35.2 nC total gate charge enable efficient gate driver sizing without excessive Miller effects.
What is the maximum continuous drain current at 100 °C mounting base temperature?
At Tmb = 100 °C, the continuous drain current is 43.7 A per datasheet limiting values (Table 4). This reflects thermal derating due to reduced heat dissipation capacity, and must be verified against actual PCB copper area and airflow conditions.
Does BUK7Y12-55B include integrated ESD protection?
No. The device does not integrate dedicated ESD protection structures. External TVS diodes or RC snubbers are recommended for gate protection in high-noise automotive environments, especially when routed near inductive loads or CAN buses.
Can BUK7Y12-55B be used in high-side configuration with standard 5 V logic?
Yes. Its standard-level VGS(th) (2–4 V) and 10 V-rated gate allow direct 5 V logic drive in high-side configurations when paired with a gate driver capable of pulling the source node above ground-though external level-shifting remains necessary for true floating high-side operation.
BUK7Y12-55B,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- TrenchMOS™
- Package/Case:
- SC-100, SOT-669
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 55 V
- Current - Continuous Drain (Id) @ 25°C:
- 61.8A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 12mOhm @ 20A, 10V
- Vgs(th) (Max) @ Id:
- 4V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 35.2 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 2067 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 105W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LFPAK56, Power-SO8
BUK7Y12-55B,115 FAQ
1.How can I place an order for BUK7Y12-55B,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK7Y12-55B,115 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 BUK7Y12-55B,115 reliable?
The price and inventory of BUK7Y12-55B,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK7Y12-55B,115 is usually 5 days.
3.What payment methods are accepted for BUK7Y12-55B,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK7Y12-55B,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK7Y12-55B,115?
BUK7Y12-55B,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK7Y12-55B,115 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 BUK7Y12-55B,115?
For technical support, including BUK7Y12-55B,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK7Y12-55B,115 requirements.
6.How does Aetrix verify that BUK7Y12-55B,115 is sourced from the original manufacturer or authorized distributors?
All BUK7Y12-55B,115 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 BUK7Y12-55B,115 meets industry standards.
7.What is the process for return or replacement of BUK7Y12-55B,115?
All BUK7Y12-55B,115 units undergo pre-shipment inspection (PSI). If there is an issue with BUK7Y12-55B,115, 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 BUK7Y12-55B,115 part is unused and in its original packaging.
Return procedure for BUK7Y12-55B,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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