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Nexperia USA Inc. BUK7Y72-80EX
- Part No.:
- BUK7Y72-80EX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FETs, MOSFETs
- Package:
- SC-100, SOT-669
- Datasheet:
-
BUK7Y72-80EX.pdf
- Description:
- MOSFET N-CH 80V 16A LFPAK56
- Quantity:
- Payment:
- Shipping:
Inventory:3,357
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Product details
Overview
BUK7Y72-80EX from Nexperia is an AEC-Q101 qualified N-channel standard-level MOSFET in LFPAK56 (SOT669) package, rated for 80 V drain-source voltage, 72 mΩ RDS(on) at VGS = 10 V and Tj = 25 °C, and 175 °C junction operation - deployed in automotive transmission control, solenoid drivers, and 12–48 V power switching systems.
For engineers reviewing the BUK7Y72-80EX datasheet, BUK7Y72-80EX pinout, BUK7Y72-80EX application, or BUK7Y72-80EX equivalent, this part supports thermally demanding automotive loads with true standard-level gate drive (VGS(th) > 1 V at 175 °C), repetitive avalanche rating, and 3.33 K/W junction-to-mounting-base thermal resistance.
Technical Context
This MOSFET uses TrenchMOS technology to achieve low on-resistance and fast switching performance while maintaining robustness under high-temperature operation. Its gate threshold voltage remains functional up to 175 °C, enabling reliable turn-on in engine bay environments without requiring elevated gate drive.
The device integrates a monolithic source-drain diode with 22 ns reverse recovery time and 20 nC recovered charge, supporting synchronous rectification and inductive load commutation. Mounting base (drain-connected) provides low-inductance thermal path and enables direct PCB copper pour heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 80 V maximum - supports 48 V automotive systems with 67 % derating margin against transients per ISO 7637-2. |
| RDS(on) | 54–72 mΩ at VGS = 10 V, Tj = 25 °C - enables <1.8 W conduction loss at 5 A continuous current. |
| ID | 16 A continuous at Tmb = 25 °C - delivers high current density in compact LFPAK56 footprint (5.8 × 4.4 mm). |
| EAS | 12.5 mJ non-repetitive avalanche energy - sustains unclamped inductive switching events without failure. |
| Rth(j-mb) | 3.33 K/W - allows 13.2 °C/W temperature rise per watt dissipated when mounted on ≥10 cm² 2 oz Cu pad. |
| QGD | 3.3 nC - minimizes Miller-induced switching delay and improves hard-switching efficiency in 100–500 kHz applications. |
| VGS(th) | >1 V at Tj = 175 °C - ensures gate turn-on compatibility with standard 5 V or 3.3 V microcontroller outputs under worst-case thermal stress. |
Pinout & Package
LFPAK56 (SOT669) is a surface-mount plastic package with exposed mounting base (drain-connected) and four leads: three parallel source terminals and one gate terminal. The package enables high-current capability and low thermal resistance via direct PCB copper thermal coupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | Source (S) | Three paralleled source pins reduce bond wire inductance and increase current handling; internally connected to common source node. |
| 4 | Gate (G) | Single gate input with 9.8 nC total gate charge - compatible with standard logic-level drivers without gate boosters. |
| Mounting Base (mb) | Drain (D) | Exposed copper pad electrically connected to drain; serves as primary thermal and current path - must be soldered to large PCB copper area. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock per JESD47. |
| Repetitive avalanche rated | Withstands repeated inductive turn-off events up to 12.5 mJ without parameter shift or degradation. |
| 175 °C junction rating | Enables placement near heat sources (e.g., engine control units) without external cooling or derating penalties. |
| True standard-level gate | VGS(th) > 1 V at 175 °C ensures reliable turn-on using standard MCU GPIOs without level-shifting circuitry. |
| Low RDS(on) × QG figure of merit | ~700 mΩ·nC - balances conduction and switching losses for high-efficiency 100–300 kHz PWM motor control. |
Applications
| Transmission Control Module | Solenoid Driver Unit |
|---|---|
|
Use Scenario: High-side switching of hydraulic solenoids in automatic transmission valve bodies operating at 12 V nominal with ±100 V load dump transients. IC Role / Device Role / Timing Role: Power switch controlling 2–5 A solenoid current with 10 ms on/off timing and 100 kHz PWM capability for precise pressure modulation. Use Value: 72 mΩ RDS(on) limits self-heating to <2.5 °C/W at 3 A, while 175 °C rating prevents thermal shutdown during extended gear-shift sequences. |
Use Scenario: Low-side driver for fuel injector coils in gasoline direct injection (GDI) engines, subject to 12 V battery supply and 80 V flyback spikes. IC Role / Device Role / Timing Role: Fast-switching N-channel switch with 5 ns turn-on delay and 5 ns fall time, enabling precise 0.5–5 ms pulse-width control. Use Value: 3.3 nC QGD reduces Miller plateau duration, minimizing overlap loss and enabling stable 200 kHz PWM without shoot-through risk. |
| Engine Bay Lighting Control | 48 V Mild Hybrid DC-DC Converter |
|
Use Scenario: Headlamp LED matrix dimming and adaptive beam steering in ambient temperatures up to 125 °C under hood. IC Role / Device Role / Timing Role: High-side switch regulating 1–4 A LED strings using PWM at 1–20 kHz, with integrated body diode for freewheeling. Use Value: 22 ns trr and 20 nC Qr minimize diode conduction loss and EMI during PWM transitions, improving system efficiency by ~1.2 %. |
Use Scenario: Synchronous rectifier in bidirectional 48 V/12 V DC-DC converter for 48 V mild hybrid architectures with peak 15 A output current. IC Role / Device Role / Timing Role: Low-side synchronous FET in buck-boost topology, switching at 250 kHz with 10 V gate drive and 80 V blocking capability. Use Value: 3.33 K/W Rth(j-mb) allows 100 % duty cycle operation at 10 A with <35 °C junction rise over board temperature, eliminating need for forced air cooling. |
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 |
|---|---|---|---|
| STL220N6F7 | 60 V VDS, 1.2 mΩ RDS(on), PowerFLAT 5×6 package, 175 °C rated | Limited to 48 V systems; superior conduction loss but lower voltage margin than BUK7Y72-80EX | Select when ultra-low RDS(on) dominates over transient immunity in space-constrained 48 V modules. |
| IRF100N04D2 | 40 V VDS, 2.2 mΩ RDS(on), TO-252 package, not AEC-Q101 qualified | Not suitable for automotive; lacks qualification, higher thermal resistance (5.5 K/W), and no avalanche rating | Only consider for cost-sensitive industrial 12 V applications where qualification and reliability are secondary. |
Compared with STL220N6F7 and IRF100N04D2, BUK7Y72-80EX uniquely combines 80 V rating, AEC-Q101 compliance, and 175 °C operation - making it the only option among the three qualified for under-hood 48 V transmission control with full transient and thermal margin.
Availability
BUK7Y72-80EX is available at Aetrix Electronics and suitable for automotive transmission control, solenoid actuation, and 48 V mild hybrid DC-DC converters requiring stable component supply across multi-year vehicle production cycles.
Supply support for BUK7Y72-80EX 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, ESD protection, and logic ICs.
The BUK7Y series belongs to Nexperia's AEC-Q101-qualified standard-level MOSFET product line, engineered specifically for thermally aggressive automotive power switching where gate drive simplicity and ruggedness outweigh ultra-low RDS(on) optimization.
FAQ
Is BUK7Y72-80EX pin-compatible with other LFPAK56 MOSFETs?
Yes - BUK7Y72-80EX uses the standard SOT669 footprint with identical 5.8 × 4.4 mm outline, 1.27 mm lead pitch, and mounting base layout. Pin 1–3 are source, Pin 4 is gate, and the base is drain. This enables drop-in replacement within the same package family, provided RDS(on), VDS, and thermal requirements align.
What is the maximum continuous drain current at 100 °C mounting base temperature?
Per Figure 1 in the datasheet, the continuous drain current is 11 A at Tmb = 100 °C and VGS = 10 V. This reflects thermal derating due to reduced heat dissipation capacity at elevated board temperatures, and must be verified against actual PCB copper area and airflow conditions.
Does BUK7Y72-80EX require a gate resistor for automotive PWM applications?
A gate resistor is recommended: 5 Ω typical for 100–300 kHz switching, as used in the datasheet's dynamic test conditions (Fig. 13–14). It controls dV/dt, suppresses ringing, and prevents gate driver overload - especially critical with the device's 3.3 nC QGD and low gate impedance in high-noise engine environments.
Can the source-drain diode be used for freewheeling in inductive loads?
Yes - the integrated body diode has 0.84–1.2 V forward voltage at 5 A and 25 °C, with 22 ns reverse recovery time and 20 nC recovered charge. It supports freewheeling in solenoid and motor drives, but synchronous rectification with a second FET yields higher efficiency above ~10 kHz.
BUK7Y72-80EX 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):
- 80 V
- Current - Continuous Drain (Id) @ 25°C:
- 16A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 72mOhm @ 5A, 10V
- Vgs(th) (Max) @ Id:
- 4V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 9.8 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 633 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 45W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LFPAK56, Power-SO8
BUK7Y72-80EX FAQ
1.How can I place an order for BUK7Y72-80EX through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK7Y72-80EX 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 BUK7Y72-80EX reliable?
The price and inventory of BUK7Y72-80EX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK7Y72-80EX is usually 5 days.
3.What payment methods are accepted for BUK7Y72-80EX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK7Y72-80EX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK7Y72-80EX?
BUK7Y72-80EX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK7Y72-80EX 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 BUK7Y72-80EX?
For technical support, including BUK7Y72-80EX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK7Y72-80EX requirements.
6.How does Aetrix verify that BUK7Y72-80EX is sourced from the original manufacturer or authorized distributors?
All BUK7Y72-80EX 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 BUK7Y72-80EX meets industry standards.
7.What is the process for return or replacement of BUK7Y72-80EX?
All BUK7Y72-80EX units undergo pre-shipment inspection (PSI). If there is an issue with BUK7Y72-80EX, 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 BUK7Y72-80EX part is unused and in its original packaging.
Return procedure for BUK7Y72-80EX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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