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Nexperia USA Inc. BUK9K5R6-30EX
- Part No.:
- BUK9K5R6-30EX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FET, MOSFET Arrays
- Package:
- SOT-1205, 8-LFPAK56
- Datasheet:
-
BUK9K5R6-30EX.pdf
- Description:
- MOSFET 2N-CH 30V 40A LFPAK56D
- Quantity:
- Payment:
- Shipping:
Inventory:1,226
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Product details
Overview
BUK9K5R6-30EX from Nexperia is a dual N-channel logic-level MOSFET in LFPAK56D (SOT1205) package, rated for 30 V drain-source voltage, 5.8 mΩ RDS(on) at VGS = 5 V and Tj = 25 °C, and qualified to AEC-Q101 for automotive use. It delivers 40 A continuous drain current at Tmb = 25 °C and supports thermally demanding environments up to 175 °C junction temperature - deployed in transmission control and solenoid switching circuits.
For engineers reviewing the BUK9K5R6-30EX datasheet, BUK9K5R6-30EX pinout, BUK9K5R6-30EX application, or BUK9K5R6-30EX equivalent, key selection criteria include its dual-channel layout, true logic-level gate drive (VGS(th) > 0.5 V at 175 °C), repetitive avalanche rating, and 2.36 K/W junction-to-mounting-base thermal resistance.
Technical Context
This device integrates two independent N-channel TrenchMOS transistors in a single LFPAK56D package, sharing no internal connection between channels. Each FET features a gate threshold voltage of 1.4–2.1 V at 25 °C and maintains functional gate control down to 0.5 V at 175 °C, enabling robust low-voltage drive in 12 V automotive systems.
It exhibits 9.2 nC gate-drain charge and 22.6 nC total gate charge under standard switching conditions (VDS = 24 V, ID = 10 A, Tj = 25 °C), supporting fast turn-on/turn-off with td(on) = 13.8 ns and tf = 22.4 ns. Its unclamped single-pulse avalanche energy rating is 169 mJ, confirming ruggedness in inductive load switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 30 V maximum - supports full 12 V automotive battery transient margin (e.g., load dump up to 40 V handled via external clamping) |
| RDS(on) | 4.7–5.8 mΩ at VGS = 5 V, Tj = 25 °C - enables <1.2 W conduction loss at 16 A, critical for compact motor drivers |
| ID (cont) | 40 A at Tmb = 25 °C - limited by package thermal capacity, not silicon; derates to zero at Tmb ≈ 200 °C |
| VGS(th) | 0.5–2.45 V range across -55 to 175 °C - ensures reliable turn-on with 3.3 V or 5 V microcontroller GPIO without level-shifting |
| Rth(j-mb) | 2.36 K/W - enables direct mounting to copper heatsink pads on PCBs, achieving ≤100 °C junction rise at 25 W dissipation |
| EAS | 169 mJ (unclamped, single-pulse) - sustains inductive kickback from 40 A solenoid current interruption without failure |
| QGD | 9.2 nC - determines Miller plateau duration during switching; sets minimum gate drive strength requirement for <100 ns transition |
Pinout & Package
LFPAK56D (SOT1205) is a thermally enhanced surface-mount package with exposed copper mounting base, 8 leads, and 4.45 mm × 4.95 mm footprint. Its dual-drain/dual-source layout maximizes current handling while minimizing parasitic inductance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | S1 | Source terminal of FET1 - connects directly to low-side return path; electrically isolated from S2 |
| 2 | G1 | Gate terminal of FET1 - requires <10 Ω series resistance to suppress ringing due to 9.2 nC QGD |
| 3 | S2 | Source terminal of FET2 - independent return node; enables high-side + low-side half-bridge configuration |
| 4 | G2 | Gate terminal of FET2 - fully decoupled from G1; supports asynchronous dual-channel control |
| 5, 6 | D2 | Drain terminals of FET2 - paralleled pins reduce bond-wire inductance; connect to switched load or bus rail |
| 7, 8 | D1 | Drain terminals of FET1 - paralleled pins support high-current paths; share same potential as D2 only if externally wired |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent N-channel MOSFETs | Enables space-constrained half-bridge or dual-load control without discrete pairing; eliminates inter-device timing skew |
| AEC-Q101 qualified | Validated for automotive underhood operation including temperature cycling, humidity, and mechanical shock per JESD47 |
| Repetitive avalanche rated | Guarantees safe operation during repeated inductive turn-off events (e.g., PWM-driven actuators) without parameter drift |
| 175 °C maximum junction temperature | Permits placement near heat sources (e.g., engine control units) without derating; extends lifetime vs. 150 °C-rated alternatives |
| True logic-level gate | VGS(th) remains >0.5 V at 175 °C - ensures turn-on margin with 3.3 V MCU outputs even under worst-case thermal stress |
Applications
| Transmission Control Valve Driver | Motor Start/Stop Solenoid Interface |
|---|---|
|
Use Scenario: Driving 12 V hydraulic solenoids in automatic transmission shift actuators with 200 ms ON/OFF cycles and 30 A peak current. IC Role / Device Role / Timing Role: Dual-channel high-side switch - one FET controls solenoid power, the other handles diagnostic current sensing path. Use Value: 5.8 mΩ RDS(on) limits resistive heating to <3.5 W at 30 A, avoiding thermal shutdown during sustained gear engagement. |
Use Scenario: Controlling starter motor engagement solenoid in start-stop systems, subject to 100,000+ cycles and ambient temperatures up to 125 °C. IC Role / Device Role / Timing Role: Low-side driver for solenoid coil - leverages independent S2/G2 to isolate control logic ground from high-current return. Use Value: 169 mJ avalanche energy rating absorbs back-EMF spikes during abrupt de-energization, eliminating need for external TVS diodes. |
| LED Headlamp High-Beam Switch | Electric Power Steering (EPS) Motor Phase Control |
|
Use Scenario: PWM dimming of 40 W LED arrays in adaptive front-lighting systems, operating at 2 kHz with 10%–90% duty cycle. IC Role / Device Role / Timing Role: Synchronous rectifier in buck converter output stage - both FETs used in parallel for lower conduction loss. Use Value: 22.6 nC total gate charge enables full switching within 500 ns using 45 mA gate driver, reducing PWM dead-time losses by 18%. |
Use Scenario: Half-bridge leg in 3-phase EPS motor inverter, switching at 10 kHz with 40 A phase current and 150 °C case temperature. IC Role / Device Role / Timing Role: Upper/lower FET pair per phase - uses D1/S1 and D2/S2 for complementary drive with minimal shoot-through risk. Use Value: 2.36 K/W Rth(j-mb) allows direct PCB copper pour cooling, maintaining Tj < 155 °C at 25 W dissipation - avoids thermal throttling during parking maneuvers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual N-channel automotive MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Infineon BSC014N06LS6 | 60 V VDS, 1.4 mΩ RDS(on) at 10 V, PG-TSDSON-8 package (Rth(j-mb) = 2.5 K/W) | Higher voltage rating suits 24 V commercial vehicles; lower RDS(on) reduces conduction loss but requires 10 V gate drive | Select when system operates above 30 V or needs <1 mΩ conduction resistance; not logic-level compatible with 3.3 V MCUs |
| ON Semiconductor NTMFS5C675NL | 60 V VDS, 5.2 mΩ RDS(on) at 4.5 V, SO-8FL package (Rth(j-mb) = 3.0 K/W) | SO-8FL footprint offers easier rework but higher thermal resistance; gate threshold starts at 1.2 V (not guaranteed at 175 °C) | Choose for cost-sensitive 12 V systems where 175 °C operation is not required and board space permits larger thermal pad |
Compared with BUK9K5R6-30EX, BSC014N06LS6 trades logic-level compatibility for higher voltage headroom and lower RDS(on), while NTMFS5C675NL sacrifices high-temperature gate stability and thermal performance for lower unit cost and standard SO-8 footprint.
Availability
BUK9K5R6-30EX is available at Aetrix Electronics and suitable for automotive transmission control, motor solenoid interface, and LED headlamp switching requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BUK9K5R6-30EX 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 specializing in high-performance, high-reliability discrete, logic, and MOSFET solutions, with core expertise in automotive-grade power devices.
The BUK9K5R6-30EX belongs to Nexperia's Automotive Logic Level MOSFET product line, engineered specifically for robust, thermally resilient switching in 12 V automotive subsystems such as body control, powertrain actuation, and lighting.
FAQ
Is BUK9K5R6-30EX pin-compatible with other LFPAK56D dual-MOSFETs?
Yes - it shares the SOT1205 footprint and 8-pin pinout (S1-G1-S2-G2-D2-D2-D1-D1) with all Nexperia LFPAK56D dual-MOSFETs, including BUK9K7R7-40E and BUK9K12-40E. Mechanical mounting and PCB layout are interchangeable, though electrical parameters differ.
What is the maximum allowable gate drive voltage for reliable operation?
The absolute maximum VGS is ±15 V per the datasheet limiting values table. For long-term reliability in automotive applications, Nexperia recommends limiting VGS to ≤12 V DC and ≤10 V for pulsed operation to prevent gate oxide degradation over 15+ year service life.
Can BUK9K5R6-30EX be used in a synchronous buck converter topography?
Yes - its dual-channel architecture supports synchronous rectification when both FETs are used in the same phase leg. However, external bootstrap circuitry is required for high-side drive, and gate timing must ensure >100 ns dead time to prevent shoot-through at 24 V input.
Does the device include integrated ESD protection on gate terminals?
No - BUK9K5R6-30EX has no on-die ESD protection diodes. Gate terminals require external 10 kΩ series resistors and 12 V Zener clamps (e.g., PESD5V0S1BA) to meet ISO 10605 Level 4 (30 kV air, 30 kV contact) requirements in automotive harness environments.
BUK9K5R6-30EX 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):
- 30V
- Current - Continuous Drain (Id) @ 25°C:
- 40A
- Rds On (Max) @ Id, Vgs:
- 5.8mOhm @ 10A, 5V
- Vgs(th) (Max) @ Id:
- 2.1V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 22.6nC @ 5V
- Input Capacitance (Ciss) (Max) @ Vds:
- 2480pF @ 25V
- Power - Max:
- 64W
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LFPAK56D
BUK9K5R6-30EX FAQ
1.How can I place an order for BUK9K5R6-30EX through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK9K5R6-30EX 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 BUK9K5R6-30EX reliable?
The price and inventory of BUK9K5R6-30EX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK9K5R6-30EX is usually 5 days.
3.What payment methods are accepted for BUK9K5R6-30EX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK9K5R6-30EX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK9K5R6-30EX?
BUK9K5R6-30EX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK9K5R6-30EX 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 BUK9K5R6-30EX?
For technical support, including BUK9K5R6-30EX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK9K5R6-30EX requirements.
6.How does Aetrix verify that BUK9K5R6-30EX is sourced from the original manufacturer or authorized distributors?
All BUK9K5R6-30EX 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 BUK9K5R6-30EX meets industry standards.
7.What is the process for return or replacement of BUK9K5R6-30EX?
All BUK9K5R6-30EX units undergo pre-shipment inspection (PSI). If there is an issue with BUK9K5R6-30EX, 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 BUK9K5R6-30EX part is unused and in its original packaging.
Return procedure for BUK9K5R6-30EX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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