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Nexperia USA Inc. BUK9K35-60RAX
- Part No.:
- BUK9K35-60RAX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FET, MOSFET Arrays
- Package:
- SOT-1205, 8-LFPAK56
- Datasheet:
-
BUK9K35-60RAX.pdf
- Description:
- MOSFET 2N-CH 60V 22A LFPAK56D
- Quantity:
- Payment:
- Shipping:
Inventory:2,521
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Product details
Overview
BUK9K35-60RA from Nexperia is a dual N-channel logic-level MOSFET in LFPAK56D (SOT1205) package, rated for 60 V VDS, 35 mΩ RDS(on) at VGS = 5 V and Tj = 25 °C, AEC-Q101 qualified to 175 °C, and engineered for repetitive avalanche operation in automotive power switching circuits such as engine control and transmission actuation.
For engineers reviewing the BUK9K35-60RA datasheet, BUK9K35-60RA pinout, BUK9K35-60RA application, or BUK9K35-60RA equivalent, this device supports high-reliability 12 V/24 V/48 V automotive systems requiring robust unclamped inductive switching, low gate drive voltage compatibility, and validated 1 Bn-cycle avalanche endurance.
Technical Context
This dual MOSFET integrates two independent N-channel silicon dies using Nexperia's Application Specific FET (ASFET) technology with Repetitive Avalanche capability-tested to 1 billion unclamped inductive events at ≤30 °C junction temperature rise. Each channel features matched threshold voltage (VGS(th) = 1.4–2.1 V at 25 °C) and low gate charge (QGD = 3 nC typical).
The LFPAK56D package employs copper clip construction for low thermal resistance (Rth(j-mb) = 3.96 K/W), gull-wing leads for AOI compatibility, and dual drain-source terminals per channel (pins 5/6 = D2, 7/8 = D1) enabling parallel current paths and enhanced PCB layout flexibility in high-current motor and solenoid drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 60 V maximum - supports 48 V automotive bus with 25 % headroom against load dump transients. |
| RDS(on) | 35 mΩ max at VGS = 5 V, Tj = 25 °C - enables efficient switching at low gate drive voltages without level-shifting circuitry. |
| ID | 22 A continuous at Tmb = 25 °C - sufficient for high-side/low-side driving of medium-power actuators and pumps. |
| EDS(AL)R | 28.6 mJ repetitive avalanche energy - validated for ≥1 billion cycles under 30 °C Tj rise, critical for flyback energy handling in inductive loads. |
| QGD | 3 nC typical - minimizes Miller-induced turn-off delay and improves hard-switching robustness in PWM-controlled valves. |
| Rth(j-mb) | 3.96 K/W - enables direct mounting to copper heatsink pads for sustained 16 A operation at Tmb = 100 °C. |
| AEC-Q101 | Qualified to 175 °C junction temperature - meets automotive reliability requirements for under-hood engine control modules. |
Pinout & Package
LFPAK56D (SOT1205) is an 8-lead single-ended surface-mount package with dual copper clips for low-inductance, high-current drain connections and gull-wing leads for automated optical inspection. Mounting base thermal interface enables direct heat transfer to PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | S1 | Source terminal for Channel 1 - connects to low-side return path; electrically isolated from S2. |
| 2 | G1 | Gate terminal for Channel 1 - controls conduction of FET1; requires <2.1 V threshold for full enhancement. |
| 3 | S2 | Source terminal for Channel 2 - independent return node for dual-channel isolation in H-bridge or dual-load configurations. |
| 4 | G2 | Gate terminal for Channel 2 - fully independent control input; no internal coupling to G1. |
| 5, 6 | D2 | Drain terminals for Channel 2 - paralleled pins reduce package inductance and increase current capacity for high-pulse loads. |
| 7, 8 | D1 | Drain terminals for Channel 1 - dual-pin configuration supports >90 A peak pulsed current (IDM) with minimal voltage overshoot. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for 175 °C operation - eliminates derating concerns in under-hood environments and ensures long-term parametric stability. |
| Repetitive avalanche rating | 28.6 mJ per event, 1 billion cycle life - enables reliable use in unclamped inductive switching without external snubbers. |
| LFPAK56D copper clip | 3.96 K/W Rth(j-mb) - delivers 2.5× better thermal performance than comparable SO-8 packages, reducing board-level heatsinking needs. |
| Logic-level gate drive | VGS(th) = 1.4–2.1 V at 25 °C - compatible with 3.3 V and 5 V microcontrollers without gate drivers in low-speed applications. |
| Dual drain/source pinning | Pins 5/6 = D2, 7/8 = D1 - lowers package loop inductance by 40 % versus single-pin drains, improving EMI and dV/dt immunity. |
Applications
| Engine Control Unit (ECU) | Transmission Control Module (TCM) |
|---|---|
|
Use Scenario: Driving fuel injector solenoids and ignition coil primary windings in gasoline/diesel engines. IC Role / Device Role / Timing Role: High-side or low-side switch managing 12 V inductive loads with precise PWM timing and fast turn-off to control injection duration. Use Value: Repetitive avalanche capability absorbs flyback energy without external diodes, reducing BOM count and PCB area while maintaining AEC-Q101 compliance. |
Use Scenario: Controlling hydraulic valve actuators and shift solenoids in automatic transmissions. IC Role / Device Role / Timing Role: Dual-channel driver enabling independent control of pressure modulation valves and clutch engagement solenoids. Use Value: Matched RDS(on) and VGS(th) between channels ensure balanced current sharing and synchronized response across dual-actuator systems. |
| Electric Power Steering (EPS) | 48 V Mild Hybrid Systems |
|
Use Scenario: Managing assist motor phase currents and torque-limiting clutches in column-assist EPS systems. IC Role / Device Role / Timing Role: Low-side switch in three-phase inverter half-bridge legs, operating at 20–50 kHz PWM frequency. Use Value: 35 mΩ RDS(on) at 5 V gate drive reduces conduction loss by 32 % vs. standard 10 V gate MOSFETs, extending battery runtime and lowering thermal stress. |
Use Scenario: Controlling DC-DC converter synchronous rectification and 48 V battery disconnect switches. IC Role / Device Role / Timing Role: High-efficiency power switch in bidirectional buck-boost converters interfacing 12 V and 48 V domains. Use Value: 60 V VDS rating provides margin against 48 V bus transients up to 65 V, while 22 A continuous current supports >1 kW power conversion. |
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 BSC028N06NS3 | Single-channel 60 V, 2.8 mΩ @ 10 V; no repetitive avalanche rating; TO-263 package. | Lacks dual-channel integration and avalanche validation - requires external protection for inductive loads. | Select only if higher current density (single FET) and lower RDS(on) at 10 V drive are prioritized over integrated dual functionality and ruggedness. |
| ON Semiconductor NTMFS5C675NL | Dual-channel 60 V, 5.2 mΩ @ 10 V; no AEC-Q101 qualification; SO-8 package; no avalanche testing data. | Not automotive-qualified; unsuitable for under-hood deployment without additional qualification effort. | Consider only for non-automotive industrial applications where cost is critical and qualification overhead must be avoided. |
Compared with BUK9K35-60RA, the Infineon part offers lower on-resistance but sacrifices dual-channel integration and avalanche ruggedness, while the ON Semiconductor part lacks automotive qualification and verified repetitive avalanche performance-making BUK9K35-60RA the only solution meeting full AEC-Q101 + 1 Bn-cycle avalanche + dual-channel + logic-level drive in one LFPAK56D package.
Availability
BUK9K35-60RA is available at Aetrix Electronics and suitable for engine control units, transmission control modules, and electric power steering systems requiring stable component supply, long-lifecycle support, and guaranteed AEC-Q101 compliance.
Supply support for BUK9K35-60RA 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 MOSFETs, ESD protection, and logic ICs.
BUK9K35-60RA belongs to Nexperia's ASFET (Application Specific FET) product line, designed specifically for automotive power switching applications demanding repetitive avalanche capability, AEC-Q101 qualification, and optimized thermal performance in compact surface-mount packages.
FAQ
What is the maximum continuous drain current for BUK9K35-60RA at 100 °C mounting base temperature?
The maximum continuous drain current is 16 A when the mounting base temperature (Tmb) is 100 °C, as specified in Table 5 (Limiting values) of the datasheet. This value accounts for thermal derating due to reduced heat dissipation at elevated temperatures and assumes proper PCB copper area and thermal vias per the recommended footprint in Figure 22.
Does BUK9K35-60RA require a gate driver for 3.3 V MCU control?
Yes - while the device is logic-level (VGS(th) max = 2.45 V at -55 °C), full enhancement to 35 mΩ RDS(on) requires VGS ≥ 5 V. At 3.3 V, RDS(on) increases significantly (≥100 mΩ), raising conduction losses. A simple level-shifting buffer or dedicated gate driver is recommended for reliable switching in production automotive systems.
How many avalanche events has BUK9K35-60RA been tested to, and under what conditions?
BUK9K35-60RA has been tested to 1 billion (1 Bn) repetitive avalanche events at ID = 0.73 A, Vsup ≤ 60 V, RGS = 10 Ω, VGS = 10 V, and Tj(rise) ≤ 30 °C (unclamped condition), as documented in Figure 5 and Section 8 of the datasheet. This validates its suitability for long-life inductive load switching.
Can pins 5 and 6 (D2) or pins 7 and 8 (D1) be used independently?
No - pins 5 and 6 are internally bonded to the same drain node (D2), and pins 7 and 8 are internally bonded to D1. They are not separate terminals but redundant connections to reduce package inductance and improve current handling. Using only one of each pair degrades thermal and electrical performance and violates the qualified layout guidelines in Figure 22.
BUK9K35-60RAX 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):
- 60V
- Current - Continuous Drain (Id) @ 25°C:
- 22A (Ta)
- Rds On (Max) @ Id, Vgs:
- 32mOhm @ 5A, 10V
- Vgs(th) (Max) @ Id:
- 2.1V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 7.8nC @ 5V
- Input Capacitance (Ciss) (Max) @ Vds:
- 1081pF @ 25V
- Power - Max:
- 38W (Ta)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LFPAK56D
BUK9K35-60RAX FAQ
1.How can I place an order for BUK9K35-60RAX through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK9K35-60RAX 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 BUK9K35-60RAX reliable?
The price and inventory of BUK9K35-60RAX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK9K35-60RAX is usually 5 days.
3.What payment methods are accepted for BUK9K35-60RAX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK9K35-60RAX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK9K35-60RAX?
BUK9K35-60RAX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK9K35-60RAX 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 BUK9K35-60RAX?
For technical support, including BUK9K35-60RAX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK9K35-60RAX requirements.
6.How does Aetrix verify that BUK9K35-60RAX is sourced from the original manufacturer or authorized distributors?
All BUK9K35-60RAX 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 BUK9K35-60RAX meets industry standards.
7.What is the process for return or replacement of BUK9K35-60RAX?
All BUK9K35-60RAX units undergo pre-shipment inspection (PSI). If there is an issue with BUK9K35-60RAX, 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 BUK9K35-60RAX part is unused and in its original packaging.
Return procedure for BUK9K35-60RAX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BUK9K35-60RAX Tags
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2N7002BKS,115
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