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Nexperia USA Inc. BUK9K30-80EX
- Part No.:
- BUK9K30-80EX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FET, MOSFET Arrays
- Package:
- SOT-1205, 8-LFPAK56
- Datasheet:
-
BUK9K30-80EX.pdf
- Description:
- MOSFET 2N-CH 80V 17A LFPAK56D
- Quantity:
- Payment:
- Shipping:
Inventory:945
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Product details
Overview
BUK9K30-80EX from Nexperia is a dual N-channel logic-level MOSFET in LFPAK56D (SOT1205) package, rated for 80 V VDS, 30 mΩ RDS(on) at VGS = 5 V and Tj = 25 °C, and qualified to AEC-Q101 for automotive use. It delivers 17 A continuous drain current at Tmb = 25 °C and supports thermally demanding applications up to 175 °C junction temperature - deployed in transmission control and 48 V battery-switching circuits.
For engineers reviewing the BUK9K30-80EX datasheet, BUK9K30-80EX pinout, BUK9K30-80EX application, or BUK9K30-80EX equivalent, key selection considerations include its dual-FET layout with shared mounting base, true logic-level gate drive (VGS(th) > 0.5 V at 175 °C), repetitive avalanche rating, and 2.84 K/W Rth(j-mb) thermal resistance.
Technical Context
This device integrates two independent N-channel TrenchMOS transistors in a single LFPAK56D package, enabling space-efficient dual-switch topologies without cross-coupling. Each FET features isolated source, gate, and drain terminals with identical electrical specs - including matched RDS(on) drift over temperature and synchronized switching characteristics.
It operates under strict automotive reliability constraints: AEC-Q101 qualification, 175 °C maximum junction temperature, and unclamped repetitive avalanche capability (EAS = 72 mJ). Gate threshold remains functional across full temperature range, supporting robust 5 V microcontroller interface without level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 80 V - Maximum drain-source blocking voltage; enables use in 48 V automotive systems with 2× safety margin. |
| RDS(on) | 21–30 mΩ @ VGS = 5 V, ID = 5 A, Tj = 25 °C - Low conduction loss for high-efficiency power switching at logic-level drive. |
| ID (cont) | 17 A @ Tmb = 25 °C - Sustained current capability with thermal derating; supports motor/solenoid loads without forced cooling. |
| QGD | 6.2 nC - Low gate-drain charge minimizes Miller-induced switching delay and improves EMI behavior in hard-switched topologies. |
| Rth(j-mb) | 2.84 K/W - Junction-to-mounting-base thermal resistance enables direct PCB copper pad heatsinking for compact automotive modules. |
| VGS(th) | >0.5 V @ Tj = 175 °C - Guaranteed turn-on with standard 5 V logic even at peak operating temperature. |
| EAS | 72 mJ - Repetitive avalanche energy rating allows safe operation during inductive load switching transients without snubbers. |
Pinout & Package
LFPAK56D (SOT1205) is a thermally enhanced surface-mount package with exposed metal mounting base for low-inductance, high-current routing and efficient heat transfer to PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | S1 | Source terminal of FET1 - electrically isolated from S2; connects to low-side return path of first switch leg. |
| 2 | G1 | Gate terminal of FET1 - accepts 5 V logic-level drive; requires <5 Ω external gate resistor for optimal switching. |
| 3 | S2 | Source terminal of FET2 - independent of S1; enables dual half-bridge or independent load control configurations. |
| 4 | G2 | Gate terminal of FET2 - fully decoupled from G1; supports asynchronous or complementary gate drive schemes. |
| 5, 6 | D2 | Drain terminal of FET2 - internally paralleled pins (5 & 6) reduce bondwire inductance and improve current sharing. |
| 7, 8 | D1 | Drain terminal of FET1 - internally paralleled pins (7 & 8) provide low-inductance, high-current drain connection. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent N-channel MOSFETs | Two matched FETs in one footprint eliminate board space and layout complexity vs. discrete dual-SO8 solutions. |
| AEC-Q101 qualified | Validated for automotive underhood environments including temperature cycling, humidity, and mechanical shock per JESD47. |
| True logic-level gate | VGS(th) > 0.5 V at 175 °C ensures reliable turn-on using standard 5 V MCU GPIO without gate drivers. |
| Repetitive avalanche rated | 72 mJ unclamped avalanche energy allows robust operation during inductive turn-off without external clamping diodes. |
| 175 °C maximum junction temperature | Enables placement near hot components (e.g., inverters, DC/DC converters) without thermal derating penalties. |
Applications
| Transmission Control Module | 48 V Mild Hybrid Starter-Generator |
|---|---|
|
Use Scenario: High-reliability switching of solenoid actuators and clutch engagement coils in automatic transmission control units. IC Role / Device Role / Timing Role: Dual N-channel power switch providing independent PWM-controlled current paths for hydraulic valve timing and pressure regulation. Use Value: Matched RDS(on) and thermal tracking between FET1/FET2 ensure balanced current sharing and prevent thermal runaway during sustained 12 A coil drive. |
Use Scenario: Bidirectional power switching in 48 V starter-generator inverters requiring fast, low-loss commutation. IC Role / Device Role / Timing Role: Half-bridge upper/lower switch pair delivering precise dead-time controlled 48 V phase current with minimal shoot-through risk. Use Value: Low QGD (6.2 nC) and fast switching (tf = 15 ns) reduce switching losses and enable >20 kHz PWM operation with minimal gate drive power. |
| Electric Power Steering (EPS) Motor Driver | Automotive HVAC Blower Control |
|
Use Scenario: Compact three-phase inverter stage driving brushless EPS motors in confined steering column assemblies. IC Role / Device Role / Timing Role: Dual FET used as two legs of a 3-phase bridge (with external third FET), handling 15 A peak motor current per phase. Use Value: LFPAK56D's 2.84 K/W Rth(j-mb) allows direct mounting on thick copper layers, eliminating need for heatsinks in space-constrained EPS modules. |
Use Scenario: PWM-controlled blower motor speed regulation in cabin HVAC systems with variable airflow demand. IC Role / Device Role / Timing Role: High-side or low-side switch controlling brushed DC blower motor current up to 17 A continuous. Use Value: Repetitive avalanche rating absorbs back-EMF spikes during motor commutation, eliminating need for freewheeling diodes in cost-sensitive HVAC designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual N-channel MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Infineon BSC020N08NS3 | Single N-channel 80 V, 2.0 mΩ; no dual configuration or AEC-Q101 rating. | Requires two separate packages for dual functionality; not qualified for automotive underhood use. | Select only for non-automotive industrial applications where dual integration and qualification are unnecessary. |
| ON Semiconductor NTMFS5C675NL | Single N-channel 60 V, 3.1 mΩ; lacks dual topology and 80 V rating. | Insufficient VDS margin for 48 V systems with load-dump transients; no AEC-Q101 certification. | Use only in 24 V or lower automotive subsystems where voltage headroom and qualification are less critical. |
Compared with BUK9K30-80EX, both alternatives lack integrated dual-FET architecture and automotive qualification - resulting in larger PCB area, higher assembly cost, and unverified reliability in high-temperature automotive environments.
Availability
BUK9K30-80EX is available at Aetrix Electronics and suitable for automotive transmission control, 48 V mild hybrid inverters, and electric power steering systems requiring stable component supply across multi-year production cycles.
Supply support for BUK9K30-80EX 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 essential semiconductors - serving automotive, industrial, and consumer markets with MOSFETs, logic, and analog devices.
The BUK9K series belongs to Nexperia's AEC-Q101-qualified logic-level automotive MOSFET product line, engineered specifically for thermally constrained, high-reliability power switching in 12 V–48 V vehicle subsystems.
FAQ
Is BUK9K30-80EX pin-compatible with earlier BUK9Kxx-80E variants?
Yes - BUK9K30-80EX maintains identical LFPAK56D (SOT1205) pinout, thermal footprint, and electrical specifications as the original BUK9K30-80E. The 'X' suffix denotes updated traceability and packaging compliance per Nexperia's 2023 manufacturing revision, with no functional or mechanical changes.
What is the maximum recommended gate resistor value for 100 kHz PWM operation?
For 100 kHz PWM with minimal switching loss and overshoot, a 4.7 Ω gate resistor is recommended. This value balances gate drive strength against ringing, given the device's 6.2 nC QGD and 1727 pF Ciss; values above 10 Ω increase tr/tf beyond 30 ns and raise conduction loss in high-duty-cycle applications.
Can BUK9K30-80EX be used in synchronous rectification topologies?
No - BUK9K30-80EX is not optimized for synchronous rectification. Its body diode exhibits 27.2 ns reverse recovery time and 30.8 nC recovered charge, which cause significant switching loss and voltage spikes when used as a freewheeling diode in buck or flyback converters. Dedicated synchronous rectifier MOSFETs with faster trr and lower Qr are required.
Does the device require external gate pull-down resistors in automotive applications?
Yes - a 10 kΩ gate-to-source pull-down resistor is mandatory on both G1 and G2 to prevent unintended turn-on from ESD or CAN bus coupling noise. This ensures fail-safe shutdown during microcontroller reset, sleep mode, or power-up sequencing in ISO 11898-compliant vehicle networks.
BUK9K30-80EX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOT-1205, 8-LFPAK56
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- MOSFET (Metal Oxide)
- Configuration:
- 2 N-Channel (Dual)
- FET Feature:
- Logic Level Gate
- Drain to Source Voltage (Vdss):
- 80V
- Current - Continuous Drain (Id) @ 25°C:
- 17A (Ta)
- Rds On (Max) @ Id, Vgs:
- 26mOhm @ 5A, 10V
- Vgs(th) (Max) @ Id:
- 2.1V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 17.5nC @ 5V
- Input Capacitance (Ciss) (Max) @ Vds:
- 2297pF @ 25V
- Power - Max:
- 53W
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LFPAK56D
BUK9K30-80EX FAQ
1.How can I place an order for BUK9K30-80EX through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK9K30-80EX 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 BUK9K30-80EX reliable?
The price and inventory of BUK9K30-80EX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK9K30-80EX is usually 5 days.
3.What payment methods are accepted for BUK9K30-80EX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK9K30-80EX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK9K30-80EX?
BUK9K30-80EX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK9K30-80EX 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 BUK9K30-80EX?
For technical support, including BUK9K30-80EX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK9K30-80EX requirements.
6.How does Aetrix verify that BUK9K30-80EX is sourced from the original manufacturer or authorized distributors?
All BUK9K30-80EX 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 BUK9K30-80EX meets industry standards.
7.What is the process for return or replacement of BUK9K30-80EX?
All BUK9K30-80EX units undergo pre-shipment inspection (PSI). If there is an issue with BUK9K30-80EX, 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 BUK9K30-80EX part is unused and in its original packaging.
Return procedure for BUK9K30-80EX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BUK9K30-80EX Tags
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