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Nexperia USA Inc. BUK9M20-60ELX
- Part No.:
- BUK9M20-60ELX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- FETs, MOSFETs
- Package:
- SOT-1210, 8-LFPAK33 (5-Lead)
- Datasheet:
-
BUK9M20-60ELX.pdf
- Description:
- SINGLE N-CHANNEL 60 V, 13 MOHM L
- Quantity:
- Payment:
- Shipping:
Inventory:849
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Product details
Overview
BUK9M20-60EL from Nexperia is a single N-channel logic-level MOSFET rated for 60 V drain-source voltage, 13 mΩ RDS(on) at VGS = 10 V and Tj = 25 °C, and qualified to AEC-Q101 for automotive linear-mode operation. It uses Enhanced SOA technology in LFPAK33 (SOT1210) package and is specifically designed for airbag squib voltage regulation in 12 V automotive systems.
For engineers reviewing the BUK9M20-60EL datasheet, BUK9M20-60EL pinout, BUK9M20-60EL application, or BUK9M20-60EL equivalent, key selection criteria include its AEC-Q101 qualification at 175 °C, 74 mJ non-repetitive avalanche energy, 1.58 K/W junction-to-mounting-base thermal resistance, and gull-wing lead configuration enabling AOI inspection and high board-level reliability.
Technical Context
This MOSFET employs Enhanced Safe Operating Area (SOA) technology to sustain stable linear-mode conduction under high-current, high-voltage transients typical of airbag squib firing circuits. Its design prioritizes robustness during unclamped inductive switching events, with validated 37 A non-repetitive avalanche current and 74 mJ energy handling capability at Tj(init) = 25 °C.
The LFPAK33 package integrates a copper clip for low-inductance, high-current paths and connects the mounting base directly to the drain terminal-enabling efficient heat transfer to the PCB while maintaining electrical isolation of source and gate terminals. Gate threshold voltage ranges from 0.5 V (Tj = 175 °C) to 2.1 V (Tj = 25 °C), ensuring reliable turn-on with standard 4.5 V logic drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 60 V maximum - supports full 12 V automotive system surge margins including load dump up to ISO 7637-2 Pulse 5a. |
| RDS(on) | 10.4 mΩ typical at VGS = 10 V, Tj = 25 °C - enables low conduction loss in continuous squib bias regulation. |
| ID | 40 A continuous at Tmb = 25 °C - validated in application testing; limited in practice by PCB thermal design. |
| EAS | 74 mJ non-repetitive avalanche energy - ensures survivability during squib coil de-energization without external snubbing. |
| Rth(j-mb) | 1.58 K/W typical - allows direct thermal coupling to copper pour, critical for linear-mode power dissipation management. |
| QGD | 9 nC typical at VGS = 4.5 V - balances switching speed and gate drive robustness for controlled squib discharge timing. |
| VGS(th) | 1.67 V typical at Tj = 25 °C - guarantees turn-on with 3.3 V/5 V microcontroller outputs without level-shifting. |
Pinout & Package
LFPAK33 (SOT1210) is a plastic, single-ended surface-mount package with 8 gull-wing leads and 0.65 mm pitch. The mounting base (mb) is electrically connected to the drain and serves as the primary thermal path to the PCB.
| 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 squib discharge. |
| 4 | Gate (G) | Single gate input with 1.9 Ω internal gate resistance - simplifies driver design and damps oscillation during fast switching. |
| mb | Mounting Base / Drain (D) | Exposed copper drain pad soldered to PCB thermal plane - provides low-impedance thermal path and eliminates need for discrete heatsink. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification at 175 °C | Validated for under-hood automotive environments where ambient temperatures exceed 125 °C and junctions reach 175 °C. |
| Enhanced SOA technology | Extends linear-mode safe operating area beyond standard MOSFETs-critical for sustained voltage regulation across squib impedance variations. |
| LFPAK33 copper clip construction | Reduces package parasitic inductance by >50% vs. standard SO8, minimizing voltage overshoot during squib turn-off. |
| Gull-wing leads | Enables automated optical inspection (AOI) and achieves >99.9% solder joint reliability in reflow profiles per J-STD-020. |
| Drain-connected mounting base | Eliminates thermal interface material; achieves <2.0 K/W system-level thermal resistance when mounted on 2 oz. copper with 4 thermal vias. |
Applications
| Airbag Squib Regulator | 12 V Battery Backup Switch |
|---|---|
|
Use Scenario: Precise voltage regulation for pyrotechnic squib firing circuit during vehicle crash event, requiring stable bias under battery voltage collapse and EMI-rich environment. IC Role / Device Role / Timing Role: Linear-mode MOSFET acting as active pass element in constant-current squib driver, controlling energy delivery within 10–100 ms window. Use Value: Enhanced SOA ensures no thermal runaway during extended linear conduction; 74 mJ avalanche rating absorbs coil flyback without external clamping diode. |
Use Scenario: High-reliability power path switch in automotive infotainment head unit, maintaining memory and real-time clock during engine start-stop cycles. IC Role / Device Role / Timing Role: Low-RDS(on) high-side switch enabling seamless transition between main battery and backup supercapacitor supply. Use Value: 13 mΩ RDS(on) minimizes dropout voltage (<80 mV at 6 A), preserving backup runtime; AEC-Q101 qualification guarantees 15-year field life. |
| Engine Control Unit Power Stage | Electric Power Steering Precharge |
|
Use Scenario: Driving solenoid valves in diesel common-rail fuel injection system, requiring precise pulse-width modulated current control with high transient immunity. IC Role / Device Role / Timing Role: Low-inductance switching element handling 20 A peak pulses at 1 kHz PWM frequency, with fast 25 ns rise/fall times. Use Value: QGD = 9 nC at 4.5 V enables clean switching with minimal gate drive power; gull-wing leads withstand mechanical shock up to 50 g. |
Use Scenario: Controlled precharge of high-voltage DC-link capacitors in EPS motor inverter prior to main contactor closure. IC Role / Device Role / Timing Role: Soft-start MOSFET limiting inrush current to <5 A during 500 ms ramp-up phase before full system enable. Use Value: 1.58 K/W Rth(j-mb) allows 100% duty-cycle precharge without heatsink; 37 A avalanche current handles worst-case capacitor short. |
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, 2.2 mΩ RDS(on), PowerFLAT 5x6 package, no AEC-Q101 linear-mode validation | Higher current density but unqualified for sustained linear operation; requires external avalanche protection | Select only for switched-mode applications with strict RDS(on) requirements and no squib-like linear stress. |
| ON Semiconductor NTMFS5C673NL | 60 V, 5.2 mΩ RDS(on), SO-8FL package, AEC-Q101 qualified but SOA not enhanced for linear mode | Limited safe operating area in linear region; derating required above 100 °C junction temperature | Acceptable for lower-power airbag modules with active thermal monitoring and reduced pulse duration. |
Compared with STL220N6F7 and NTMFS5C673NL, BUK9M20-60EL uniquely combines AEC-Q101 qualification, validated linear-mode SOA, and drain-connected thermal pad-making it the only drop-in solution for high-energy squib regulators without redesigning thermal or protection circuitry.
Availability
BUK9M20-60EL is available at Aetrix Electronics and suitable for automotive safety systems, engine control units, and electric power steering modules requiring stable component supply across extended product lifecycles and stringent quality traceability.
Supply support for BUK9M20-60EL 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 semiconductors, delivering high-performance, reliable components for automotive, industrial, and consumer markets.
BUK9M20-60EL belongs to Nexperia's ASFET (Application Specific Field-Effect Transistor) portfolio, engineered specifically for automotive linear-mode applications such as airbag squib drivers where SOA, avalanche ruggedness, and AEC-Q101 compliance are non-negotiable.
FAQ
What is the maximum continuous drain current for BUK9M20-60EL at 100 °C mounting base temperature?
The datasheet specifies 37 A continuous drain current at Tmb = 100 °C under VGS = 10 V conditions (Figure 2). This value reflects actual application-tested capability-not theoretical limit-and assumes adequate PCB copper area (≥400 mm² 2 oz. copper) and thermal via count (≥6).
Does BUK9M20-60EL require a gate resistor for airbag squib driving applications?
A 5 Ω external gate resistor is recommended per Figure 19 test conditions to control dV/dt during turn-off and prevent false triggering from EMI-induced gate voltage spikes. The device's internal 1.9 Ω gate resistance alone is insufficient for robust noise immunity in crash-event environments.
Can BUK9M20-60EL be used in parallel configurations for higher current handling?
No-parallel operation is not recommended due to positive temperature coefficient of RDS(on) being insufficient to ensure current sharing across units. The datasheet does not characterize matching tolerance or provide layout guidance for paralleling, and AEC-Q101 validation applies only to single-device use.
What is the significance of the "Enhanced SOA" technology in BUK9M20-60EL?
Enhanced SOA extends the linear-mode safe operating area by optimizing cell layout and thermal distribution, allowing sustained operation at 30 V × 10 A (300 W) for >100 ms without thermal runaway-where standard MOSFETs would fail catastrophically. This is validated per Figure 3 and Figure 4 up to Tmb = 125 °C.
BUK9M20-60ELX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- 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):
- 60 V
- Current - Continuous Drain (Id) @ 25°C:
- 40A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 4.5V, 10V
- Rds On (Max) @ Id, Vgs:
- 21mOhm @ 15A, 10V
- Vgs(th) (Max) @ Id:
- 2.1V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 56 nC @ 10 V
- Vgs (Max):
- ±10V
- Input Capacitance (Ciss) (Max) @ Vds:
- 2941 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 79.4W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LFPAK33
BUK9M20-60ELX FAQ
1.How can I place an order for BUK9M20-60ELX through Aetrix?
Please submit a Request for Quotation (RFQ) for BUK9M20-60ELX 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 BUK9M20-60ELX reliable?
The price and inventory of BUK9M20-60ELX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK9M20-60ELX is usually 5 days.
3.What payment methods are accepted for BUK9M20-60ELX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK9M20-60ELX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BUK9M20-60ELX?
BUK9M20-60ELX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BUK9M20-60ELX 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 BUK9M20-60ELX?
For technical support, including BUK9M20-60ELX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK9M20-60ELX requirements.
6.How does Aetrix verify that BUK9M20-60ELX is sourced from the original manufacturer or authorized distributors?
All BUK9M20-60ELX 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 BUK9M20-60ELX meets industry standards.
7.What is the process for return or replacement of BUK9M20-60ELX?
All BUK9M20-60ELX units undergo pre-shipment inspection (PSI). If there is an issue with BUK9M20-60ELX, 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 BUK9M20-60ELX part is unused and in its original packaging.
Return procedure for BUK9M20-60ELX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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