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Nexperia USA Inc. BUK7K134-100EX
- Part No.:
- BUK7K134-100EX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FET, MOSFET Arrays
- Package:
- SOT-1205, 8-LFPAK56
- Datasheet:
-
BUK7K134-100EX.pdf
- Description:
- MOSFET 2N-CH 100V 9.8A LFPAK56D
- Quantity:
- Payment:
- Shipping:
Inventory:2,111
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Product details
Overview
BUK7K134-100EX from Nexperia is a dual N-channel standard-level MOSFET in LFPAK56D (SOT1205) package, rated for 100 V drain-source voltage, 121 mΩ RDS(on) at 10 VGS/25 °C, and qualified to AEC-Q101 for automotive use. It integrates two independent power switches with repetitive avalanche rating and 175 °C junction temperature capability, deployed in transmission control and solenoid drivers where thermal robustness and gate-drive compatibility with 5 V microcontrollers are required.
For engineers reviewing the BUK7K134-100EX datasheet, BUK7K134-100EX pinout, BUK7K134-100EX application, or BUK7K134-100EX equivalent, key selection criteria include its dual-channel layout in a thermally enhanced surface-mount package, standard-level gate threshold (>1 V at 175 °C), 9.8 A continuous drain current at 25 °C mounting base, and compliance with automotive reliability standards.
Technical Context
This device implements TrenchMOS technology in a dual-die LFPAK56D configuration, enabling independent control of two high-side or low-side switching paths. Its true standard-level gate drive (VGS(th) > 1 V at 175 °C) ensures reliable turn-on with legacy 5 V logic while maintaining tight threshold stability across temperature.
The MOSFET supports unclamped inductive switching with 10.9 mJ single-pulse avalanche energy and features matched dynamic parameters-QGD = 4.3 nC, QG(tot) = 10.5 nC, and Ciss = 423–564 pF-optimized for fast, low-loss switching in 12 V/24 V/48 V automotive power nets.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 100 V maximum - supports operation in 48 V automotive systems with margin against load dump transients. |
| RDS(on) | 97–121 mΩ at VGS = 10 V, ID = 5 A, Tj = 25 °C - enables low conduction loss in motor and lamp drivers. |
| ID (continuous) | 9.8 A at Tmb = 25 °C - delivers stable current handling with PCB-mounted thermal management. |
| Ptot | 32 W at Tmb = 25 °C - supported by low 4.68 K/W junction-to-mounting-base thermal resistance. |
| VGS(th) | 1–4.5 V range, >1 V at Tj = 175 °C - guarantees gate turn-on with standard 5 V MCU outputs under worst-case thermal stress. |
| EAS | 10.9 mJ unclamped avalanche energy - allows safe operation in inductive switching without external snubbers. |
| QGD | 4.3 nC - minimizes Miller-induced switching delay and improves controllability during hard commutation. |
Pinout & Package
LFPAK56D (SOT1205) is a thermally optimized 8-lead surface-mount package with dual exposed drain pads for enhanced heat dissipation and mechanical robustness in automotive vibration environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | S1 | Source terminal for FET1 - connects to low-side return path or ground reference for first channel. |
| 2 | G1 | Gate terminal for FET1 - accepts standard-level logic input; requires no level-shifting for 5 V controllers. |
| 3 | S2 | Source terminal for FET2 - electrically isolated from S1; enables independent second switch leg. |
| 4 | G2 | Gate terminal for FET2 - fully decoupled control path for dual-load or H-bridge half-bridge configurations. |
| 5, 6 | D2 | Drain terminals for FET2 - paralleled pins reduce inductance and improve current sharing in high-frequency switching. |
| 7, 8 | D1 | Drain terminals for FET1 - dual-drain layout lowers thermal resistance and enhances power density vs. SO-8. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock per JESD47. |
| Repetitive avalanche rated | Withstands repeated inductive energy spikes up to EAS = 10.9 mJ without parameter degradation. |
| 175 °C junction rating | Enables operation in engine bay or transmission control modules without derating below ambient extremes. |
| True standard-level gate | VGS(th) remains >1 V at 175 °C, ensuring deterministic turn-on with 5 V logic without gate boosting. |
| LFPAK56D thermal performance | Rth(j-mb) = 4.68 K/W - 3× better than standard SO-8, enabling higher power density in space-constrained ECUs. |
Applications
| Transmission Control Module | Solenoid Driver Unit |
|---|---|
|
Use Scenario: High-current switching of hydraulic solenoids in automatic transmission valve bodies under under-hood temperatures up to 150 °C ambient. IC Role / Device Role / Timing Role: Dual-channel low-side driver controlling two independent solenoid coils with synchronized PWM timing and fault isolation. Use Value: Eliminates need for discrete dual-MOSFET layouts while maintaining <121 mΩ on-resistance and 175 °C thermal headroom for long-term reliability. |
Use Scenario: Driving 12 V DC solenoids in brake-by-wire actuators requiring fail-safe current limiting and thermal shutdown. IC Role / Device Role / Timing Role: Independent high-side or low-side switch with integrated avalanche ruggedness for inductive kickback suppression. Use Value: Reduces bill-of-materials count by integrating two AEC-Q101 MOSFETs with matched RDS(on) and QGD into one footprint. |
| Engine Cooling Fan Controller | 48 V Mild Hybrid Starter Generator Interface |
|
Use Scenario: PWM-controlled 24 V radiator fan motor with reverse-polarity and overtemperature protection in compact ECU designs. IC Role / Device Role / Timing Role: Dual N-channel switch implementing half-bridge topology with precise dead-time control via separate gate inputs. Use Value: Enables compact, thermally efficient fan driver with 9.8 A continuous current per channel and 100 V transient tolerance. |
Use Scenario: Bidirectional power switching in 48 V starter-generator inverters requiring low conduction loss and fast switching. IC Role / Device Role / Timing Role: Dual-channel synchronous rectifier or phase-leg switch with matched dynamic characteristics for reduced shoot-through risk. Use Value: Delivers 97 mΩ typical RDS(on) and 4.3 nC QGD to minimize conduction + switching losses in high-frequency 48 V power conversion. |
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 rating, 2.2 mΩ RDS(on), PowerFLAT 5x6 package, 175 °C rated but not AEC-Q101 qualified. | Targeted at industrial motor drives, not automotive; lacks automotive qualification and dual-drain thermal optimization. | Select only for non-automotive 60 V systems where ultra-low RDS(on) outweighs qualification requirements. |
| ON Semiconductor NTMFS5C675NL | 60 V, 5.2 mΩ, SO-8 package, AEC-Q101 qualified, but single-channel and higher Rth(j-a) (62 K/W). | Requires two devices for dual functionality; inferior thermal performance limits power density in confined spaces. | Use when dual-channel integration is unnecessary and board area permits discrete placement of two SO-8 devices. |
Compared with STL220N6F7 and NTMFS5C675NL, BUK7K134-100EX uniquely combines AEC-Q101 qualification, dual-channel integration in LFPAK56D, 100 V rating, and 4.68 K/W thermal resistance-making it the only option for space-constrained, thermally demanding automotive dual-switch applications.
Availability
BUK7K134-100EX is available at Aetrix Electronics and suitable for automotive transmission control, solenoid actuation, and 48 V mild hybrid power interfaces requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for BUK7K134-100EX 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-qualified components and advanced packaging.
BUK7K134-100EX belongs to Nexperia's Automotive Logic and Power portfolio, engineered specifically for thermally aggressive automotive subsystems requiring AEC-Q101 reliability, standard-level gate drive, and dual-channel integration in compact surface-mount packages.
FAQ
Is BUK7K134-100EX pin-compatible with other LFPAK56D dual MOSFETs?
No. While all LFPAK56D dual MOSFETs share the SOT1205 outline, BUK7K134-100EX uses a unique 1–8 pin assignment (S1-G1-S2-G2-D2-D2-D1-D1) that differs from alternatives like BUK7K12-40E (S1-G1-D1-D1-D2-G2-S2-S2). Layout must be verified against Table 2 in the datasheet before substitution.
What is the maximum continuous drain current at 100 °C mounting base temperature?
Per Figure 2 in the datasheet, the continuous drain current drops to 6.9 A at Tmb = 100 °C with VGS = 10 V. This reflects thermal derating due to reduced heat transfer efficiency at elevated board temperatures, critical for under-hood ECU designs.
Does BUK7K134-100EX support gate driving directly from a 3.3 V microcontroller?
No. Its minimum VGS(th) is 1 V at 175 °C, but full enhancement requires ≥10 V gate drive to achieve rated RDS(on). At 3.3 V, RDS(on) exceeds 1 Ω, causing excessive conduction loss. A gate driver or level shifter is mandatory for 3.3 V logic interfaces.
How is avalanche ruggedness validated for this part?
Avalanche energy rating (10.9 mJ) is measured per IEC 60747-9 using unclamped inductive switching tests at Tj(init) = 25 °C, ID = 9.8 A, Vsup ≤ 100 V, and RGS = 50 Ω. It is a single-pulse rating limited by 175 °C junction temperature, not repetitive capability.
BUK7K134-100EX 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):
- 100V
- Current - Continuous Drain (Id) @ 25°C:
- 9.8A
- Rds On (Max) @ Id, Vgs:
- 121mOhm @ 5A, 10V
- Vgs(th) (Max) @ Id:
- 4V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 10.5nC @ 10V
- Input Capacitance (Ciss) (Max) @ Vds:
- 564pF @ 25V
- Power - Max:
- 32W
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LFPAK56D
BUK7K134-100EX FAQ
1.How can I place an order for BUK7K134-100EX through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK7K134-100EX 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 BUK7K134-100EX reliable?
The price and inventory of BUK7K134-100EX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK7K134-100EX is usually 5 days.
3.What payment methods are accepted for BUK7K134-100EX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK7K134-100EX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK7K134-100EX?
BUK7K134-100EX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK7K134-100EX 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 BUK7K134-100EX?
For technical support, including BUK7K134-100EX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK7K134-100EX requirements.
6.How does Aetrix verify that BUK7K134-100EX is sourced from the original manufacturer or authorized distributors?
All BUK7K134-100EX 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 BUK7K134-100EX meets industry standards.
7.What is the process for return or replacement of BUK7K134-100EX?
All BUK7K134-100EX units undergo pre-shipment inspection (PSI). If there is an issue with BUK7K134-100EX, 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 BUK7K134-100EX part is unused and in its original packaging.
Return procedure for BUK7K134-100EX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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