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Nexperia USA Inc. BUK9M23-80EX
- Part No.:
- BUK9M23-80EX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FETs, MOSFETs
- Package:
- SOT-1210, 8-LFPAK33 (5-Lead)
- Datasheet:
-
BUK9M23-80EX.pdf
- Description:
- MOSFET N-CH 80V 37A LFPAK33
- Quantity:
- Payment:
- Shipping:
Inventory:4,340
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Product details
Overview
BUK9M23-80EX from Nexperia is an AEC-Q101 qualified N-channel logic-level MOSFET in LFPAK33 (SOT1210) package, designed for high-reliability automotive power switching. It delivers 80 V drain-source voltage rating, 23 mΩ RDS(on) at VGS = 5 V and Tj = 25 °C, 37 A continuous drain current at Tmb = 25 °C, and operates up to 175 °C junction temperature - enabling use in transmission control and 48 V battery systems.
For engineers reviewing the BUK9M23-80EX datasheet, BUK9M23-80EX pinout, BUK9M23-80EX application, or BUK9M23-80EX equivalent, key selection criteria include its true logic-level gate (VGS(th) > 0.5 V at 175 °C), repetitive avalanche rating, 1.58 K/W junction-to-mounting-base thermal resistance, and LFPAK33 footprint compatibility with high-power density PCB layouts.
Technical Context
This MOSFET employs TrenchMOS technology to achieve low on-resistance and fast switching performance. Its gate threshold voltage remains functional across the full −55 °C to 175 °C junction range, supporting robust operation in under-hood environments where thermal transients are common.
The device integrates a monolithic source-drain diode with 23.8 ns reverse recovery time and 28.4 nC recovered charge, enabling efficient freewheeling in inductive loads like solenoids and brushed DC motors without external snubbers in many designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 80 V - Maximum blocking voltage compatible with 48 V automotive architectures and transient overvoltage tolerance per ISO 7637-2. |
| RDS(on) | 23 mΩ @ VGS = 5 V, Tj = 25 °C - Enables <1 W conduction loss at 10 A, reducing heatsink requirements in space-constrained modules. |
| ID | 37 A @ Tmb = 25 °C - Supports high-current motor drive stages without paralleling, simplifying layout and BOM count. |
| EAS | 55.4 mJ - Single-pulse unclamped avalanche energy rating ensures ruggedness against inductive kickback during fault events. |
| Rth(j-mb) | 1.58 K/W - Low thermal resistance enables direct mounting to copper planes or heatsinks, critical for sustained 26 A operation at Tmb = 100 °C. |
| QGD | 7.1 nC - Gate-drain charge value directly impacts Miller-induced turn-off delay and EMI in hard-switched topologies. |
| Tj max | 175 °C - Extended junction temperature rating allows deployment in engine bay locations without derating penalties typical of 150 °C-rated devices. |
Pinout & Package
LFPAK33 (SOT1210) is a thermally enhanced surface-mount package with exposed mounting base connected to drain, optimized for high-current automotive applications. It features 4 terminals plus integrated mounting base, offering superior thermal performance vs. standard SO-8 or DPAK.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | Source (S) | Three parallel source pins reduce bond wire inductance and improve current sharing in high-di/dt switching. |
| 4 | Gate (G) | Single gate input with low input capacitance (Ciss = 2.8 nF typ) for easy 3.3 V/5 V MCU-level drive. |
| Mounting Base (mb) | Drain (D) | Exposed copper pad electrically and thermally tied to drain - must be soldered to PCB copper pour for thermal and electrical integrity. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTOL, TC, HAST, and UHAST - required for powertrain and chassis ECUs. |
| True logic-level gate | VGS(th) > 0.5 V at 175 °C ensures turn-on margin even under worst-case hot-cranking conditions in 12 V systems. |
| Repetitive avalanche rated | Rated for repeated unclamped inductive switching events - eliminates need for external clamping circuits in solenoid drivers. |
| 175 °C maximum junction temperature | Enables operation in high-ambient zones (e.g., near exhaust manifolds or inverters) without thermal shutdown or lifetime degradation. |
| Low QGD/QG ratio | 7.1 nC / 20 nC = 0.355 - improves controllability during Miller plateau and reduces risk of spurious turn-on in half-bridge configurations. |
Applications
| Transmission Control Valve Driver | 48 V Mild Hybrid Starter-Generator Interface |
|---|---|
|
Use Scenario: Driving high-current solenoid valves in automatic transmission hydraulic control units exposed to under-hood temperatures up to 150 °C ambient. IC Role / Device Role / Timing Role: High-side or low-side power switch controlling 15–25 A peak valve currents with <100 ns switching transitions. Use Value: Repetitive avalanche rating absorbs inductive energy without external protection; 175 °C rating avoids thermal derating at elevated ambient. |
Use Scenario: Bidirectional power switching in 48 V starter-generator inverters where compact size and thermal efficiency are critical. IC Role / Device Role / Timing Role: Synchronous rectifier or phase-leg switch operating at 10–20 kHz with forced-air cooling. Use Value: 23 mΩ RDS(on) minimizes conduction losses at 30 A RMS; LFPAK33's 1.58 K/W Rth(j-mb) enables direct thermal coupling to cold plate. |
| Engine Cooling Fan Controller | Electric Power Steering (EPS) Motor Phase Switch |
|
Use Scenario: PWM-controlled brushless DC fan driver in radiator modules subjected to vibration, humidity, and thermal cycling. IC Role / Device Role / Timing Role: Low-side switch modulating 20–35 A fan motor current at 1–20 kHz PWM frequency. Use Value: Integrated source-drain diode with 23.8 ns trr supports efficient freewheeling; AEC-Q101 qualification ensures long-term field reliability. |
Use Scenario: Three-phase inverter stage in column-assist EPS systems requiring high fault tolerance and minimal latency. IC Role / Device Role / Timing Role: Phase-leg MOSFET switched by isolated gate driver with <50 ns propagation delay. Use Value: 148 A peak drain current (IDM) supports short-circuit withstand during torque surge events; 80 V VDS accommodates load-dump transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel automotive MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STL220N6F7 | 60 V VDS, 1.6 mΩ RDS(on) @ 10 V, PowerFLAT 5x6 package, no AEC-Q101 certification | Limited to 24 V systems; lacks automotive qualification and high-temp gate stability | Select only for non-automotive industrial 24 V motor drives where cost outweighs qualification requirements. |
| IRF3205PBF | 55 V VDS, 8 mΩ RDS(on) @ 10 V, TO-220 package, not AEC-Q101 rated | Requires heatsink; unsuitable for surface-mount automotive modules or high-temperature ambient operation | Use only in legacy through-hole designs with ample thermal margin and no automotive compliance mandate. |
Compared with STL220N6F7 and IRF3205PBF, BUK9M23-80EX provides higher voltage headroom (80 V), guaranteed automotive qualification, and superior thermal performance in a surface-mount package - making it the only viable choice for new 48 V automotive power designs requiring AEC-Q101 compliance and 175 °C operation.
Availability
BUK9M23-80EX is available at Aetrix Electronics and suitable for automotive transmission control, 48 V mild hybrid interfaces, engine cooling fan systems, and electric power steering motor drives requiring stable component supply across multi-year production cycles.
Supply support for BUK9M23-80EX 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 discrete and logic devices, with leadership in automotive-qualified MOSFETs and ESD protection solutions.
This device belongs to Nexperia's LFPAK automotive power MOSFET product line, engineered specifically for thermally demanding, safety-critical vehicle subsystems where AEC-Q101 compliance and extended temperature operation are mandatory.
FAQ
Is BUK9M23-80EX pin-compatible with other LFPAK33 MOSFETs?
Yes - BUK9M23-80EX uses the standardized SOT1210 footprint with identical pin assignment (pins 1–3 = Source, pin 4 = Gate, mounting base = Drain). This enables drop-in replacement within the same LFPAK33 family when RDS(on), VDS, and thermal requirements align, provided gate drive strength and layout thermal relief match.
What is the maximum recommended gate resistor for 5 V MCU drive?
A 10 Ω series gate resistor is recommended for 5 V microcontroller drive to limit peak gate current while maintaining <50 ns turn-on delay. Lower values (<5 Ω) may cause excessive ringing due to low gate impedance; higher values (>22 Ω) increase switching losses and thermal stress during transition periods.
Does BUK9M23-80EX require a Kelvin source connection for precision current sensing?
No - this device does not feature a dedicated Kelvin source terminal. For accurate high-side current sensing, external shunt resistors or Hall-effect sensors are required. The three-source-pin configuration improves current distribution but does not provide separate sense path isolation.
Can BUK9M23-80EX be used in synchronous rectification topologies?
Yes - its low RDS(on) (23 mΩ), fast body diode (trr = 23.8 ns), and low QGD (7.1 nC) make it suitable for synchronous rectification in 48 V DC-DC converters up to 200 kHz. Layout must minimize source loop inductance to avoid shoot-through during dead-time transitions.
BUK9M23-80EX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- TrenchMOS™
- Package/Case:
- SOT-1210, 8-LFPAK33 (5-Lead)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 80 V
- Current - Continuous Drain (Id) @ 25°C:
- 37A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 5V
- Rds On (Max) @ Id, Vgs:
- 20mOhm @ 10A, 10V
- Vgs(th) (Max) @ Id:
- 2.1V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 20 nC @ 5 V
- Vgs (Max):
- ±10V
- Input Capacitance (Ciss) (Max) @ Vds:
- 2808 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 79W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LFPAK33
BUK9M23-80EX FAQ
1.How can I place an order for BUK9M23-80EX through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK9M23-80EX 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 BUK9M23-80EX reliable?
The price and inventory of BUK9M23-80EX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK9M23-80EX is usually 5 days.
3.What payment methods are accepted for BUK9M23-80EX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK9M23-80EX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK9M23-80EX?
BUK9M23-80EX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK9M23-80EX 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 BUK9M23-80EX?
For technical support, including BUK9M23-80EX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK9M23-80EX requirements.
6.How does Aetrix verify that BUK9M23-80EX is sourced from the original manufacturer or authorized distributors?
All BUK9M23-80EX 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 BUK9M23-80EX meets industry standards.
7.What is the process for return or replacement of BUK9M23-80EX?
All BUK9M23-80EX units undergo pre-shipment inspection (PSI). If there is an issue with BUK9M23-80EX, 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 BUK9M23-80EX part is unused and in its original packaging.
Return procedure for BUK9M23-80EX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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