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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Nexperia USA Inc. BUK9Y8R8-60ELX

Name: BUK9Y8R8-60ELX
Brand: Nexperia USA Inc.
SKU: BUK9Y8R8-60ELX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BUK9Y8R8-60ELX

Manufacturer:: Nexperia USA Inc.

Category:: FETs, MOSFETs

Package:: SC-100, SOT-669

Datasheet:: BUK9Y8R8-60ELX.pdf

Description:: SINGLE N-CHANNEL 60 V, 5.6 MOHM

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BUK9Y8R8-60EL from Nexperia is a single N-channel logic-level MOSFET rated for 60 V drain-source voltage, 5.6 mΩ R_DS(on) at V_GS = 10 V and T_j = 25 °C, and qualified to AEC-Q101 for automotive use. It employs Enhanced SOA technology in LFPAK56 (SOT669) package and is specifically designed for linear-mode operation in airbag squib voltage regulation circuits.

For engineers reviewing the BUK9Y8R8-60EL datasheet, BUK9Y8R8-60EL pinout, BUK9Y8R8-60EL application, or BUK9Y8R8-60EL equivalent, key selection criteria include its 175 °C junction temperature rating, 194 W total power dissipation at T_mb = 25 °C, robust avalanche energy rating of 195 mJ, and gull-wing lead configuration enabling AOI inspection and high board-level reliability.

Technical Context

This MOSFET uses Enhanced Safe Operating Area (SOA) technology to sustain extended linear-mode conduction-critical for precise current control in airbag squib drivers. Its LFPAK56 copper-clip construction delivers low thermal resistance (R_th(j-mb) = 0.69 K/W typ) and high current capability (110 A continuous at T_mb = 25 °C).

The device features logic-level gate drive (V_GS(th) = 1.4–2.1 V typ), low Q_G(tot) (88–123 nC), and optimized dynamic parameters including Q_GD = 18.2–36.4 nC and C_iss = 4782–6695 pF, supporting fast, controlled switching in safety-critical 12 V automotive systems.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	60 V maximum - supports full 12 V automotive battery rail with margin against load dump transients.
R_DS(on)	5.6 mΩ max at V_GS = 10 V, T_j = 25 °C - enables low conduction loss in high-current squib regulation.
I_D (cont)	110 A at T_mb = 25 °C - validated under application conditions; limited in practice by PCB thermal design.
P_tot	194 W at T_mb = 25 °C - high power handling enabled by copper-clip LFPAK56 thermal path.
E_AS	195 mJ non-repetitive avalanche energy - ensures ruggedness during inductive turn-off in squib driver circuits.
R_th(j-mb)	0.69 K/W typical - direct junction-to-mounting-base thermal path minimizes temperature rise under linear bias.
V_GS(th)	1.4–2.1 V typical at T_j = 25 °C - compatible with standard 3.3 V/5 V microcontroller GPIO without level-shifting.

Pinout & Package

LFPAK56 (SOT669) is a 4-terminal, single-ended surface-mount plastic package with copper clip construction, gull-wing leads, and exposed mounting base electrically connected to the drain. It provides high current capability, excellent thermal performance, and AOI-friendly solder joint inspection.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3	Source (S)	Three parallel source terminals reduce parasitic inductance and improve current sharing in high-di/dt squib discharge paths.
4	Gate (G)	Single gate input with low input capacitance (C_iss ≈ 5.7 nF) for fast, low-power switching control.
Mounting Base (mb)	Drain (D)	Exposed copper pad tied directly to drain; serves as primary thermal and high-current conduction path to PCB.

Key Features

Feature	Design Value
AEC-Q101 qualification	Rated for 175 °C junction temperature - enables reliable operation in under-hood and airbag control module environments.
Enhanced SOA technology	Extended linear-mode safe operating area - allows stable DC or pulsed current regulation without thermal runaway in squib drivers.
LFPAK56 copper clip	0.69 K/W typical R_th(j-mb) - reduces thermal impedance by >30% vs. standard SO-8, improving power density and reliability.
Gull-wing leads	Visible solder joints enable automated optical inspection - critical for zero-defect requirements in automotive safety systems.
Low R_DS(on) @ 4.5 V	8.6 mΩ max at V_GS = 4.5 V, T_j = 25 °C - ensures strong turn-on even with marginal gate drive in noisy automotive environments.

Applications

Airbag Squib Driver

12 V Battery Protection Switch

Use Scenario: Regulating precise current through pyrotechnic squib elements during crash detection and deployment.

IC Role / Device Role / Timing Role: Linear-mode current-controlled switch operating in active region to deliver calibrated squib firing energy.

Use Value: Enhanced SOA prevents thermal failure during sustained linear conduction; 195 mJ avalanche rating absorbs inductive kickback safely.

Use Scenario: High-side switching of 12 V battery power to ECU subsystems with overcurrent and short-circuit protection.

IC Role / Device Role / Timing Role: Low-R_DS(on) power switch controlling main supply rail with fast fault response.

Use Value: 5.6 mΩ R_DS(on) minimizes voltage drop and heat generation; gull-wing leads ensure long-term solder joint integrity.

Automotive LED Headlamp Dimming

Electric Power Steering (EPS) Motor Control

Use Scenario: Analog dimming of high-brightness LED arrays using PWM-controlled linear regulation.

IC Role / Device Role / Timing Role: Sustained linear-mode pass element modulating current to maintain consistent luminance.

Use Value: Stable R_DS(on) over temperature (±15% from -40 °C to 175 °C) ensures predictable dimming behavior across ambient range.

Use Scenario: Half-bridge high-side switch in EPS motor phase drivers requiring high peak current and thermal resilience.

IC Role / Device Role / Timing Role: Fast-switching, high-current power stage component handling 493 A pulsed drain current.

Use Value: 493 A peak drain current rating and 0.69 K/W thermal resistance support transient motor surge demands without derating.

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 R_DS(on), PowerFLAT 5x6 package, no AEC-Q101 linear-mode validation.	Lacks Enhanced SOA certification for airbag squib linear operation; suitable only for switching applications.	Select only if linear-mode operation is not required and lower R_DS(on) justifies higher cost and different footprint.
ON Semiconductor NTMFS5C676NL	60 V, 4.5 mΩ R_DS(on), SO-8FL package, AEC-Q101 qualified but no published SOA curve for linear mode.	Not characterized for sustained linear conduction; limited to switching topologies in safety systems.	Preferable for high-frequency switching where lower Q_G matters, but avoid in airbag squib regulators requiring SOA assurance.

Compared with STL220N6F7 and NTMFS5C676NL, BUK9Y8R8-60EL uniquely combines AEC-Q101 qualification, published linear-mode SOA curves, and gull-wing leads-making it the only option validated for production airbag squib voltage regulation where thermal stability under DC bias is mandatory.

Availability

BUK9Y8R8-60EL is available at Aetrix Electronics and suitable for automotive airbag systems, 12 V battery protection circuits, and electric power steering motor control requiring stable component supply, AEC-Q101 compliance, and proven linear-mode ruggedness.

Supply support for BUK9Y8R8-60EL 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 high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified MOSFETs and advanced packaging.

BUK9Y8R8-60EL belongs to Nexperia's ASFET (Application Specific Field-Effect Transistor) product line, engineered explicitly for linear-mode automotive safety applications-including airbag squib drivers-where SOA, thermal robustness, and AEC-Q101 compliance are non-negotiable.

FAQ

Is BUK9Y8R8-60EL qualified for linear-mode operation in airbag systems?

Yes. The device is explicitly designed and qualified to AEC-Q101 for linear-mode operation in airbag squib voltage regulator applications. Its Enhanced SOA technology, validated safe operating area curves (Fig. 3–4), and 195 mJ avalanche energy rating confirm suitability for sustained DC conduction under crash-triggered conditions.

What is the thermal resistance from junction to mounting base?

The typical thermal resistance from junction to mounting base (R_th(j-mb)) is 0.69 K/W, with a maximum of 0.77 K/W. This value is measured under standard test conditions per Fig. 6 and reflects the direct copper-clip thermal path in the LFPAK56 package, enabling efficient heat transfer to the PCB.

Can BUK9Y8R8-60EL be driven directly by a 3.3 V microcontroller?

Yes. With a gate threshold voltage (V_GS(th)) of 1.4–2.1 V typical at 25 °C and R_DS(on) = 8.6 mΩ max at V_GS = 4.5 V, the device achieves strong enhancement at 3.3 V logic levels-though full 10 V drive is recommended for minimum R_DS(on) and optimal SOA margin in safety-critical use.

How does the LFPAK56 package differ from standard SO-8 in reliability?

LFPAK56 replaces bond wires with a copper clip connecting die to leads and mounting base, reducing parasitic inductance and thermal resistance by ~30%. Its gull-wing leads provide visible solder joints for AOI, and the exposed drain pad improves both thermal dissipation and mechanical anchoring-key for automotive vibration and thermal cycling endurance.

BUK9Y8R8-60ELX Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: SC-100, SOT-669

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:: 110A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 4.5V, 10V

Rds On (Max) @ Id, Vgs:: 5.6mOhm @ 25A, 10V

Vgs(th) (Max) @ Id:: 2.1V @ 1mA

Gate Charge (Qg) (Max) @ Vgs:: 123 nC @ 10 V

Vgs (Max):: ±10V

Input Capacitance (Ciss) (Max) @ Vds:: 6695 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 194W (Tc)

Operating Temperature:: -55°C ~ 175°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: LFPAK56, Power-SO8

BUK9Y8R8-60ELX FAQ

1.How can I place an order for BUK9Y8R8-60ELX through Aetrix?

Please submit a Request for Quotation (RFQ) for BUK9Y8R8-60ELX 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 BUK9Y8R8-60ELX reliable?

The price and inventory of BUK9Y8R8-60ELX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK9Y8R8-60ELX is usually 5 days.

3.What payment methods are accepted for BUK9Y8R8-60ELX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK9Y8R8-60ELX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BUK9Y8R8-60ELX?

BUK9Y8R8-60ELX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BUK9Y8R8-60ELX 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 BUK9Y8R8-60ELX?

For technical support, including BUK9Y8R8-60ELX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK9Y8R8-60ELX requirements.

6.How does Aetrix verify that BUK9Y8R8-60ELX is sourced from the original manufacturer or authorized distributors?

All BUK9Y8R8-60ELX 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 BUK9Y8R8-60ELX meets industry standards.

7.What is the process for return or replacement of BUK9Y8R8-60ELX?

All BUK9Y8R8-60ELX units undergo pre-shipment inspection (PSI). If there is an issue with BUK9Y8R8-60ELX, 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 BUK9Y8R8-60ELX part is unused and in its original packaging.

Return procedure for BUK9Y8R8-60ELX:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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