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Nexperia USA Inc. BUK7Y9R9-80E/CX
- Part No.:
- BUK7Y9R9-80E/CX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Bipolar Transistors
- Package:
- SC-100, SOT-669
- Datasheet:
-
BUK7Y9R9-80E/CX.pdf
- Description:
- TRANS LFPAK56 PWRSO8
- Quantity:
- Payment:
- Shipping:
Inventory:2,806
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Product details
Overview
BUK7Y9R9-80E from Nexperia is an AEC-Q101 qualified N-channel standard-level MOSFET in LFPAK56 (SOT669) package, rated for 80 V VDS, 9.9 mΩ RDS(on) at 25 °C, and 175 °C junction operation. It delivers 89 A continuous drain current at Tmb = 25 °C and supports ultra-high-performance power switching in automotive 12 V/24 V/48 V systems.
For engineers reviewing the BUK7Y9R9-80E datasheet, BUK7Y9R9-80E pinout, BUK7Y9R9-80E application, or BUK7Y9R9-80E equivalent, this device is selected for thermally demanding automotive load control where repetitive avalanche capability, true standard gate drive (VGS(th) > 1 V at 175 °C), and low thermal resistance (0.77 K/W) are critical.
Technical Context
This MOSFET uses TrenchMOS technology to achieve low RDS(on) while maintaining robust avalanche ruggedness (106 mJ unclamped single-pulse) and stable threshold voltage across temperature. Its standard-level gate enables direct drive from 5 V or 3.3 V microcontrollers without level-shifting.
The LFPAK56 package integrates a thermally enhanced mounting base connected to the drain, enabling efficient heat transfer to PCB copper or heatsinks. The triple-source-pin configuration reduces source inductance and improves switching performance in high-di/dt applications like solenoid and motor control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 80 V - Maximum blocking voltage for 48 V automotive systems with margin against transients. |
| RDS(on) | 9.9 mΩ @ VGS = 10 V, ID = 25 A, Tj = 25 °C - Enables <1 W conduction loss at 32 A, reducing thermal design burden. |
| ID (cont) | 89 A @ Tmb = 25 °C - Supports high-current loads such as starter relays or HVAC blowers without external heatsinking. |
| EAS | 106 mJ - Repetitive avalanche-rated for inductive load switching without snubbers in transmission control modules. |
| Rth(j-mb) | 0.77 K/W - Junction-to-mounting-base thermal resistance allows >150 W dissipation with moderate PCB copper area. |
| QGD | 14.4 nC - Low gate-drain charge minimizes Miller-induced switching oscillation and improves EMI behavior. |
| VGS(th) | >1 V @ Tj = 175 °C - Ensures reliable turn-on under worst-case hot-cranking conditions in engine compartments. |
Pinout & Package
LFPAK56 (SOT669) is a surface-mount plastic package with exposed drain mounting base and four leads. Its compact 5.8 × 4.4 mm footprint and 0.77 K/W thermal resistance support high-power density automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | Source (S) | Three parallel source terminals reduce source loop inductance and improve switching stability in high-frequency PWM drives. |
| 4 | Gate (G) | Single gate input optimized for standard-level logic drive; compatible with 3.3 V/5 V MCU GPIOs without buffer. |
| Mounting Base (mb) | Drain (D) | Exposed drain pad provides primary thermal path to PCB and contributes >90% of total power dissipation capability. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and UHAST per Q101-004. |
| Repetitive avalanche rated | 106 mJ unclamped single-pulse energy enables robust inductive load switching without external protection. |
| 175 °C maximum junction temperature | Supports operation in under-hood environments (e.g., transmission control units) without derating at full current. |
| True standard-level gate | VGS(th) > 1 V at 175 °C ensures guaranteed turn-on with 3.3 V or 5 V logic drivers even at peak temperature. |
| Low RDS(on) × QG figure-of-merit | 9.9 mΩ × 51.6 nC = 511 mΩ·nC - Balances conduction and switching losses for high-efficiency 10–100 kHz switching. |
Applications
| Engine Start/Stop Control | Electric Power Steering (EPS) |
|---|---|
|
Use Scenario: High-current solenoid actuation during automatic engine restart after idle stop. IC Role / Device Role / Timing Role: Main power switch controlling 40–60 A cranking circuit with <10 ms turn-on response. Use Value: 106 mJ avalanche rating absorbs inductive kickback from solenoid coil without snubber, eliminating component count. |
Use Scenario: Motor phase switching in 12 V EPS systems requiring precise torque modulation. IC Role / Device Role / Timing Role: Half-bridge high-side switch operating at 20–50 kHz PWM with tight dead-time control. Use Value: Triple-source pins minimize parasitic inductance, reducing voltage overshoot and improving PWM fidelity at 50 A peak. |
| Transmission Valve Control | Body Control Module (BCM) Load Switching |
|
Use Scenario: Driving proportional solenoids in 8-speed automatic transmissions with closed-loop current regulation. IC Role / Device Role / Timing Role: Linear-mode controlled switch delivering 0.5–3 A with <100 µs response for pressure modulation. Use Value: Stable RDS(on) over temperature (±15% from −40 °C to 175 °C) ensures consistent current accuracy across ambient range. |
Use Scenario: Centralized 12 V load switching for lighting, wipers, and HVAC fans in modern BCMs. IC Role / Device Role / Timing Role: High-side smart switch replacing mechanical relays with diagnostics and short-circuit protection. Use Value: 89 A continuous rating enables single-device control of multiple 10 A loads, simplifying board layout and BOM. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel automotive MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STL220N6F7 | 60 V VDS, 2.2 mΩ RDS(on), PowerFLAT 5×6 package, no AEC-Q101 certification | Limited to 24 V systems; lacks automotive qualification and avalanche rating | Select only for cost-sensitive non-automotive industrial 24 V loads where qualification is not required. |
| IRF1404ZPBF | 40 V VDS, 10.5 mΩ RDS(on), TO-220AB package, non-automotive grade | Lower voltage rating and through-hole packaging unsuitable for high-density automotive PCBs | Use only in legacy 12 V designs with existing TO-220 thermal infrastructure and no AEC compliance needs. |
Compared with STL220N6F7 and IRF1404ZPBF, BUK7Y9R9-80E uniquely combines 80 V rating, AEC-Q101 qualification, LFPAK56 thermal performance, and verified repetitive avalanche capability-making it the only drop-in solution for next-generation 48 V mild-hybrid and high-reliability 12 V/24 V automotive power stages.
Availability
BUK7Y9R9-80E is available at Aetrix Electronics and suitable for automotive body control modules, electric power steering systems, and transmission control units requiring stable component supply across extended product lifecycles.
Supply support for BUK7Y9R9-80E 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 and industrial power management.
BUK7Y9R9-80E belongs to Nexperia's LFPAK automotive MOSFET family, engineered specifically for thermally constrained, safety-critical vehicle subsystems demanding AEC-Q101 compliance and field-proven ruggedness.
FAQ
Is BUK7Y9R9-80E suitable for 48 V mild-hybrid applications?
Yes. Its 80 V VDS rating provides 20 V headroom above nominal 48 V bus, accommodating ISO 16750-2 load dump transients up to 65 V. Combined with 175 °C operation and AEC-Q101 qualification, it meets key requirements for 48 V DC-DC converters and battery disconnect switches.
What is the recommended PCB layout for optimal thermal performance?
Use ≥200 mm² of 2 oz copper connected directly to the mounting base (drain) with ≥6 thermal vias (0.3 mm diameter, 0.6 mm pitch) to inner ground/power planes. Keep gate traces short and shielded from drain switching noise; maintain ≥0.5 mm clearance between G and D routing.
Does BUK7Y9R9-80E require a gate resistor for safe operation?
A series gate resistor (5–10 Ω) is recommended to dampen ringing and limit peak gate current during fast switching. This prevents unintended turn-on due to dv/dt coupling and ensures clean transitions when driving inductive loads at >20 kHz PWM frequencies.
Can BUK7Y9R9-80E replace older TO-220 MOSFETs in existing designs?
Yes, with layout adaptation. Its LFPAK56 footprint (5.8 × 4.4 mm) replaces TO-220's 10 × 15 mm area, enabling higher power density. Thermal interface must be redesigned to use the mounting base instead of a tab washer; gate drive remains compatible due to standard-level threshold.
BUK7Y9R9-80E/CX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-100, SOT-669
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Transistor Type:
- -
- Current - Collector (Ic) (Max):
- -
- Voltage - Collector Emitter Breakdown (Max):
- -
- Vce Saturation (Max) @ Ib, Ic:
- -
- Current - Collector Cutoff (Max):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- -
- Power - Max:
- -
- Frequency - Transition:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LFPAK56, Power-SO8
BUK7Y9R9-80E/CX FAQ
1.How can I place an order for BUK7Y9R9-80E/CX through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK7Y9R9-80E/CX 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 BUK7Y9R9-80E/CX reliable?
The price and inventory of BUK7Y9R9-80E/CX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK7Y9R9-80E/CX is usually 5 days.
3.What payment methods are accepted for BUK7Y9R9-80E/CX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK7Y9R9-80E/CX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK7Y9R9-80E/CX?
BUK7Y9R9-80E/CX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK7Y9R9-80E/CX 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 BUK7Y9R9-80E/CX?
For technical support, including BUK7Y9R9-80E/CX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK7Y9R9-80E/CX requirements.
6.How does Aetrix verify that BUK7Y9R9-80E/CX is sourced from the original manufacturer or authorized distributors?
All BUK7Y9R9-80E/CX 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 BUK7Y9R9-80E/CX meets industry standards.
7.What is the process for return or replacement of BUK7Y9R9-80E/CX?
All BUK7Y9R9-80E/CX units undergo pre-shipment inspection (PSI). If there is an issue with BUK7Y9R9-80E/CX, 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 BUK7Y9R9-80E/CX part is unused and in its original packaging.
Return procedure for BUK7Y9R9-80E/CX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BUK7Y9R9-80E/CX Tags
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