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Nexperia USA Inc. BUK9M17-30EX
- Part No.:
- BUK9M17-30EX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FETs, MOSFETs
- Package:
- SOT-1210, 8-LFPAK33 (5-Lead)
- Datasheet:
-
BUK9M17-30EX.pdf
- Description:
- MOSFET N-CH 30V 37A LFPAK33
- Quantity:
- Payment:
- Shipping:
Inventory:2,931
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Product details
Overview
BUK9M17-30EX from Nexperia is an AEC-Q101 qualified N-channel logic-level MOSFET in LFPAK33 (SOT1210) package, rated for 30 V VDS, 17 mΩ RDS(on) at VGS = 5 V and Tj = 25 °C, and 175 °C junction operation - designed for high-reliability automotive power switching in 12 V systems.
For engineers reviewing the BUK9M17-30EX datasheet, BUK9M17-30EX pinout, BUK9M17-30EX application, or BUK9M17-30EX equivalent, this device supports thermally demanding motor, lamp, and solenoid control with true logic-level gate drive (VGS(th) > 0.5 V at 175 °C), repetitive avalanche rating, and mounting-base thermal resistance of 2.77 K/W.
Technical Context
This MOSFET employs TrenchMOS technology to achieve low on-resistance and fast switching performance: QGD = 3.7 nC and tf = 9.8 ns enable efficient PWM-based power control. Its LFPAK33 package integrates a thermally optimized mounting base directly connected to the drain, supporting high-current operation up to 37 A continuous at Tmb = 25 °C.
The device features a robust source-drain diode (VSD = 0.85 V at IS = 10 A, Tj = 25 °C) and is specified for unclamped inductive switching with EAS = 13.7 mJ at Tj(init) = 25 °C - critical for transmission control and load dump scenarios in automotive ECUs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 30 V - Maximum drain-source blocking voltage compatible with 12 V automotive battery systems including load dump transients. |
| RDS(on) | 14–17 mΩ @ VGS = 5 V, ID = 10 A, Tj = 25 °C - Enables low conduction loss in high-current switching nodes. |
| ID (continuous) | 37 A @ Tmb = 25 °C - Supports high-power loads such as HVAC blowers and fuel pumps without external heatsinking. |
| Ptot | 44 W @ Tmb = 25 °C - High power dissipation capability enabled by low Rth(j-mb) = 2.77 K/W. |
| VGS(th) | > 0.5 V @ Tj = 175 °C - Ensures reliable turn-on under extreme under-hood temperatures with standard 5 V microcontroller outputs. |
| QGD | 3.7 nC - Low gate-drain charge minimizes Miller-induced switching delay and improves hard-switching efficiency. |
| EAS | 13.7 mJ - Rated non-repetitive avalanche energy enables robustness against inductive kickback in solenoid and motor drive circuits. |
Pinout & Package
LFPAK33 (SOT1210) is a surface-mount, single-ended power package with integrated copper mounting base for enhanced thermal transfer. The drain is internally connected to the mounting base (mb), enabling direct PCB copper pour attachment for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | Source (S) | Three parallel source terminals reduce bond wire inductance and improve current sharing in high-di/dt applications. |
| 4 | Gate (G) | Single gate input with low input capacitance (Ciss = 545–725 pF) for fast, low-drive-strength switching. |
| mb | Mounting Base / Drain (D) | Exposed copper pad electrically tied to drain; serves as primary thermal path and high-current drain connection. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability across temperature, humidity, and mechanical stress cycles - required for engine bay and transmission control modules. |
| Repetitive avalanche rating | Rated for repeated inductive energy clamping without degradation - essential for motor commutation and relay driving where flyback spikes occur frequently. |
| 175 °C maximum junction temperature | Enables operation in under-hood environments exceeding 125 °C ambient, with derating curves supporting stable performance up to full Tj. |
| True logic-level gate | VGS(th) > 0.5 V at 175 °C ensures guaranteed turn-on using standard 5 V MCU GPIOs without level-shifting circuitry. |
| Low Rth(j-mb) | 2.77 K/W thermal resistance enables >30 W power handling with minimal ΔT between junction and PCB copper - reduces need for external heatsinks. |
Applications
| Engine Control Unit (ECU) Load Switching | Automotive HVAC Blower Motor Drive |
|---|---|
|
Use Scenario: Switching 12 V solenoids, fuel injectors, and ignition coils in engine management systems subject to wide temperature swings and vibration. IC Role / Device Role / Timing Role: High-side or low-side power switch controlling inductive loads with precise PWM timing and fast turn-off to limit back-EMF. Use Value: Repetitive avalanche rating and 175 °C operation ensure long-term reliability during cold cranking and hot soak conditions. |
Use Scenario: Driving brushed DC blower motors in climate control systems requiring variable speed via PWM. IC Role / Device Role / Timing Role: Low-side switching element delivering up to 37 A peak current with minimal RDS(on)-based heating. Use Value: 14–17 mΩ on-resistance at 5 V gate drive reduces conduction losses by >40% vs. legacy 10 V gate MOSFETs, improving system efficiency. |
| Transmission Control Module (TCM) Valve Actuation | LED Headlamp Dimming Circuit |
|
Use Scenario: Controlling hydraulic solenoid valves in automatic transmissions exposed to oil immersion and thermal cycling. IC Role / Device Role / Timing Role: Precision current-controlled switch managing valve dwell time and current ramp profiles. Use Value: Stable VGS(th) over temperature ensures consistent turn-on timing across -40 °C to +150 °C operating range. |
Use Scenario: High-frequency PWM dimming of LED headlamps with tight thermal constraints in compact front-end modules. IC Role / Device Role / Timing Role: Fast-switching low-side driver enabling >1 kHz dimming frequencies with minimal switching loss. Use Value: QGD = 3.7 nC and tf = 9.8 ns support clean edge transitions and reduced EMI generation in safety-critical lighting. |
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 |
|---|---|---|---|
| STL220N3LLH6 | 30 V, 2.2 mΩ RDS(on) @ 10 V, requires 10 V gate drive; not AEC-Q101 qualified | Better conduction loss at higher gate voltage but unsuitable for 5 V logic-level systems or automotive qualification requirements | Select only for non-automotive industrial 10 V gate drive applications where ultra-low RDS(on) outweighs qualification needs. |
| ON Semiconductor NTMFS4C09NT1G | 30 V, 9.5 mΩ RDS(on) @ 10 V; AEC-Q101 qualified; SO-8FL package with higher Rth(j-mb) = 4.5 K/W | Higher thermal resistance limits continuous current to ~22 A at Tmb = 25 °C vs. 37 A for BUK9M17-30EX | Prefer when board space is constrained and SO-8FL footprint is mandated, accepting lower power density and thermal performance. |
Compared with STL220N3LLH6 and NTMFS4C09NT1G, BUK9M17-30EX uniquely balances AEC-Q101 compliance, true 5 V logic-level operation, and superior thermal performance in LFPAK33 - making it optimal for space-constrained, thermally aggressive automotive power stages where gate drive simplicity and reliability are prioritized over absolute minimum RDS(on).
Availability
BUK9M17-30EX is available at Aetrix Electronics and suitable for automotive ECU load switching, HVAC blower motor control, transmission solenoid actuation, and LED headlamp dimming requiring stable component supply across extended temperature and qualification-critical programs.
Supply support for BUK9M17-30EX 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 focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified MOSFETs and ESD protection solutions.
The BUK9M17-30EX belongs to Nexperia's LFPAK automotive MOSFET product line, engineered specifically for high-efficiency, high-temperature power switching in 12 V vehicle networks - emphasizing ruggedness, thermal performance, and seamless integration with 5 V microcontrollers.
FAQ
Is BUK9M17-30EX suitable for high-side switching configurations?
No - the LFPAK33 package ties the mounting base to the drain, and pins 1–3 are source-only. High-side use would require isolation of the drain node from PCB ground plane, which defeats the thermal advantage of the mb connection. It is optimized for low-side or half-bridge low-side switching in automotive applications.
What is the maximum continuous drain current at 100 °C mounting base temperature?
Per Figure 2 in the datasheet, the continuous drain current is derated to 26 A at Tmb = 100 °C with VGS ≥ 5 V. This reflects thermal limitation rather than electrical saturation, and operation must remain within the Safe Operating Area (SOA) curve shown in Figure 3.
Does BUK9M17-30EX include integrated gate protection?
No - it does not integrate gate Zener clamping or series resistance. External gate resistor (typically 5 Ω) and optional 12 V Zener clamp are recommended per Figure 14 and application note AN10273 to prevent VGS overstress during fast switching or ESD events.
Can BUK9M17-30EX replace older BUK9Yxx-75 series MOSFETs?
No - the BUK9Yxx-75 series uses LFPAK56 (SOT669) with different pinout, thermal profile, and higher RDS(on). Direct replacement requires PCB layout revision due to SOT1210 vs. SOT669 footprint mismatch and altered thermal interface design.
BUK9M17-30EX 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):
- 30 V
- Current - Continuous Drain (Id) @ 25°C:
- 37A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 5V
- Rds On (Max) @ Id, Vgs:
- 14mOhm @ 10A, 10V
- Vgs(th) (Max) @ Id:
- 2.1V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 8 nC @ 5 V
- Vgs (Max):
- ±10V
- Input Capacitance (Ciss) (Max) @ Vds:
- 725 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 44W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LFPAK33
BUK9M17-30EX FAQ
1.How can I place an order for BUK9M17-30EX through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK9M17-30EX 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 BUK9M17-30EX reliable?
The price and inventory of BUK9M17-30EX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK9M17-30EX is usually 5 days.
3.What payment methods are accepted for BUK9M17-30EX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK9M17-30EX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK9M17-30EX?
BUK9M17-30EX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK9M17-30EX 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 BUK9M17-30EX?
For technical support, including BUK9M17-30EX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK9M17-30EX requirements.
6.How does Aetrix verify that BUK9M17-30EX is sourced from the original manufacturer or authorized distributors?
All BUK9M17-30EX 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 BUK9M17-30EX meets industry standards.
7.What is the process for return or replacement of BUK9M17-30EX?
All BUK9M17-30EX units undergo pre-shipment inspection (PSI). If there is an issue with BUK9M17-30EX, 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 BUK9M17-30EX part is unused and in its original packaging.
Return procedure for BUK9M17-30EX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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