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Nexperia USA Inc. BUK7K35-60EX
- Part No.:
- BUK7K35-60EX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FET, MOSFET Arrays
- Package:
- SOT-1205, 8-LFPAK56
- Datasheet:
-
BUK7K35-60EX.pdf
- Description:
- MOSFET 2N-CH 60V 20.7A LFPAK56D
- Quantity:
- Payment:
- Shipping:
Inventory:1,469
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Product details
Overview
BUK7K35-60EX from Nexperia is a dual N-channel standard-level MOSFET in LFPAK56D (SOT1205) package, rated for 60 V VDS, 30 mΩ RDS(on) at 10 VGS/25 °C, and qualified to AEC-Q101 for automotive power switching. It integrates two independent FETs with repetitive avalanche rating, 175 °C junction temperature capability, and true standard-level gate drive (VGS(th) > 1 V at 175 °C), deployed in transmission control and solenoid drivers.
For engineers reviewing the BUK7K35-60EX datasheet, BUK7K35-60EX pinout, BUK7K35-60EX application, or BUK7K35-60EX equivalent, this page delivers verified electrical specs, thermal performance data, dual-FET layout context, and automotive-grade reliability validation - critical for high-reliability 12 V system design and thermally constrained motor control.
Technical Context
This device implements TrenchMOS technology in a dual-die LFPAK56D package with isolated source terminals (S1/S2) and shared drain pads (D1/D2 doubled per side). Its standard-level gate enables direct microcontroller drive without level-shifting, while the 3.96 K/W Rth(j-mb) supports high-power density mounting on copper-clad PCBs or heatsinks.
The dual configuration allows independent channel control for H-bridge half-bridge topologies or redundant load switching. Repetitive avalanche rating (20.3 mJ) and 175 °C Tj operation ensure robustness under inductive load turn-off transients and sustained thermal stress in engine bay environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 60 V maximum - supports full 12 V automotive battery transient tolerance (load dump up to 40 V + margin). |
| RDS(on) | 24–30 mΩ at VGS = 10 V, Tj = 25 °C - enables <2 W conduction loss at 8 A continuous drain current. |
| ID | 20.7 A continuous at Tmb = 25 °C - sufficient for high-current lamp or solenoid loads without forced cooling. |
| EAS | 20.3 mJ non-repetitive avalanche energy - withstands inductive kickback from 20.7 A coil currents without failure. |
| Rth(j-mb) | 3.96 K/W - enables 9.6 W dissipation before reaching 175 °C junction limit when mounted on 2 oz Cu thermal pad. |
| QGD | 4.7 nC - low gate-drain charge minimizes Miller-induced shoot-through risk in fast-switching H-bridge designs. |
| VGS(th) | 1–4.5 V range (Tj = −55 to 175 °C) - ensures reliable turn-on across full automotive temperature range with standard 3.3/5 V logic. |
Pinout & Package
LFPAK56D (SOT1205) is a thermally enhanced surface-mount package with exposed copper mounting base, 8 leads, and dual-drain/dual-source layout optimized for high-current PCB routing and thermal transfer. Dimensions: 4.7 × 3.5 × 1.05 mm (L × W × H), with 1.27 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | S1 | Source terminal for FET1 - electrically isolated from S2; connects to low-side return path of first channel. |
| 2 | G1 | Gate terminal for FET1 - accepts standard-level logic drive; requires <12.5 nC total gate charge for full switching. |
| 3 | S2 | Source terminal for FET2 - independent of S1; enables separate current sensing or floating load configurations. |
| 4 | G2 | Gate terminal for FET2 - fully decoupled from G1; supports asynchronous or complementary control schemes. |
| 5, 6 | D2 | Drain terminal for FET2 - paralleled pins reduce inductance and resistance; connects to high-side supply rail or inductive load. |
| 7, 8 | D1 | Drain terminal for FET1 - paralleled pins enhance current handling and thermal spreading; shares mounting base with D2. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity testing, and mechanical shock per JESD47. |
| Repetitive avalanche rating | Rated for repeated inductive energy clamping up to 20.3 mJ - eliminates need for external snubbers in solenoid drivers. |
| 175 °C junction rating | Enables operation in under-hood environments without derating below 100 °C ambient - extends system lifetime. |
| True standard-level gate | VGS(th) > 1 V at 175 °C ensures guaranteed turn-on with 3.3 V or 5 V MCU outputs without gate boosting. |
| LFPAK56D thermal performance | 3.96 K/W Rth(j-mb) delivers 2.4× better thermal resistance than SO8 - reduces board area and heatsink cost. |
Applications
| Transmission Control Module | Engine Cooling Fan Driver |
|---|---|
|
Use Scenario: PWM-controlled hydraulic valve actuation in automatic transmission systems requiring precise pressure modulation and fault-tolerant redundancy. IC Role / Device Role / Timing Role: Dual-channel high-side switch enabling independent control of two solenoid valves; each FET handles 15 A peak during gear shift events. Use Value: Repetitive avalanche rating absorbs inductive spikes from 24 V solenoids; 175 °C rating sustains operation near hot exhaust manifolds. |
Use Scenario: Variable-speed DC brushless fan control in engine bay, operating continuously at 85 °C ambient with 12 V supply. IC Role / Device Role / Timing Role: Low-side switching element in half-bridge topology; FET1 drives phase A, FET2 drives phase B with dead-time control. Use Value: 30 mΩ RDS(on) limits conduction loss to <2 W at 8 A, reducing thermal load on compact PCB; LFPAK56D base improves heat transfer to chassis. |
| LED Headlamp Matrix Switch | Start-Stop System Load Disconnect |
|
Use Scenario: Individual pixel control in adaptive LED headlamps, where each segment draws up to 3 A at 12 V with rapid on/off cycling. IC Role / Device Role / Timing Role: High-speed switching element with <10 ns turn-off delay; dual channels manage adjacent LED strings independently. Use Value: Low QGD (4.7 nC) and fast fall time (7.2 ns) minimize switching losses at 2 kHz PWM frequency; standard-level gate simplifies MCU interface. |
Use Scenario: Isolation of auxiliary loads (e.g., infotainment, HVAC) during engine cranking to prevent voltage sag below 6 V. IC Role / Device Role / Timing Role: Bidirectional load disconnect switch; FET1 handles main battery feed, FET2 monitors reverse current during regenerative braking. Use Value: 60 V VDS withstands load dump transients; dual-channel layout enables fail-safe open-circuit detection via independent source monitoring. |
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 |
|---|---|---|---|
| STL220N6F7 | 60 V, 2.2 mΩ @ 10 VGS, 175 °C, PowerFLAT 5x6 - lower RDS(on) but no AEC-Q101 certification. | Preferred for industrial motor drives where automotive qualification is not required and lower conduction loss is critical. | Select when thermal budget is tighter and qualification compliance is secondary to efficiency. |
| ON-SEMI NTMFS5C678NLT1G | 60 V, 3.8 mΩ @ 10 VGS, 175 °C, SO-8 - higher RDS(on) than BUK7K35-60EX, AEC-Q101 qualified, but lacks dual-isolated sources. | Suitable for single-channel high-current switching where space constraints favor SO-8 over LFPAK56D. | Choose when board real estate is limited and dual-source isolation is unnecessary. |
Compared with STL220N6F7 and NTMFS5C678NLT1G, the BUK7K35-60EX uniquely combines AEC-Q101 qualification, dual isolated sources, and 30 mΩ RDS(on) in a thermally superior LFPAK56D package - making it optimal for safety-critical dual-load automotive control where layout flexibility and transient robustness are mandatory.
Availability
BUK7K35-60EX is available at Aetrix Electronics and suitable for automotive transmission control, engine cooling fan drivers, and adaptive LED headlamp systems requiring stable component supply, long-term lifecycle support, and traceable sourcing for Tier-1 OEM programs.
Supply support for BUK7K35-60EX 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 essential efficiency technologies, delivering high-performance, high-reliability discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.
The BUK7K35-60EX belongs to Nexperia's Automotive Logic and Power portfolio, engineered specifically for high-current, high-temperature automotive power switching applications demanding AEC-Q101 compliance and robust transient handling.
FAQ
Is BUK7K35-60EX pin-compatible with other LFPAK56D dual-MOSFETs?
No - BUK7K35-60EX uses a unique pinout (S1-G1-S2-G2-D2-D2-D1-D1) with duplicated drain pins and isolated sources. Other LFPAK56D dual devices like BUK7K12-60E have different pin assignments (e.g., shared source), making direct replacement impossible without PCB redesign.
What is the maximum continuous drain current at 100 °C mounting base temperature?
Per Figure 1 in the datasheet, the maximum continuous drain current drops to 17 A at Tmb = 100 °C with VGS = 10 V. This derating reflects thermal limits of the LFPAK56D package and must be applied in convection-cooled under-hood layouts.
Does BUK7K35-60EX support gate driving directly from a 3.3 V microcontroller?
Yes - its VGS(th) remains >1 V even at 175 °C junction temperature, ensuring turn-on with 3.3 V logic. However, RDS(on) increases significantly below 4.5 VGS; for <30 mΩ performance, ≥4.9 V gate plateau voltage requires ≥5 V drive.
Can both FETs be used in parallel to increase current capacity?
No - the device is not characterized for paralleling due to mismatched threshold voltages and thermal coupling. Its dual-FET architecture is intended for independent channel control (e.g., half-bridge legs), not current sharing; paralleling risks thermal runaway.
BUK7K35-60EX 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:
- -
- Drain to Source Voltage (Vdss):
- 60V
- Current - Continuous Drain (Id) @ 25°C:
- 20.7A
- Rds On (Max) @ Id, Vgs:
- 30mOhm @ 5A, 10V
- Vgs(th) (Max) @ Id:
- 4V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 12.5nC @ 10V
- Input Capacitance (Ciss) (Max) @ Vds:
- 794pF @ 25V
- Power - Max:
- 38W
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LFPAK56D
BUK7K35-60EX FAQ
1.How can I place an order for BUK7K35-60EX through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK7K35-60EX 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 BUK7K35-60EX reliable?
The price and inventory of BUK7K35-60EX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK7K35-60EX is usually 5 days.
3.What payment methods are accepted for BUK7K35-60EX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK7K35-60EX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK7K35-60EX?
BUK7K35-60EX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK7K35-60EX 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 BUK7K35-60EX?
For technical support, including BUK7K35-60EX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK7K35-60EX requirements.
6.How does Aetrix verify that BUK7K35-60EX is sourced from the original manufacturer or authorized distributors?
All BUK7K35-60EX 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 BUK7K35-60EX meets industry standards.
7.What is the process for return or replacement of BUK7K35-60EX?
All BUK7K35-60EX units undergo pre-shipment inspection (PSI). If there is an issue with BUK7K35-60EX, 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 BUK7K35-60EX part is unused and in its original packaging.
Return procedure for BUK7K35-60EX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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