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

Nexperia USA Inc. BUK6D43-60EX

Name: BUK6D43-60EX
Brand: Nexperia USA Inc.
SKU: BUK6D43-60EX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BUK6D43-60EX

Manufacturer:: Nexperia USA Inc.

Category:: FETs, MOSFETs

Package:: 6-UDFN Exposed Pad

Datasheet:: BUK6D43-60EX.pdf

Description:: MOSFET N-CH 60V 5A DFN2020MD-6

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BUK6D43-60EX from Nexperia is a 60 V, 13 A N-channel Trench MOSFET in DFN2020MD-6 (SOT1220) package, optimized for low-side load switching with 32 mΩ R_DS(on) at V_GS = 10 V and T_j = 25 °C, AEC-Q101 qualified, and rated for continuous operation up to 175 °C junction temperature - deployed in automotive relay drivers and high-speed line drivers.

For engineers reviewing the BUK6D43-60EX datasheet, BUK6D43-60EX pinout, BUK6D43-60EX application, or BUK6D43-60EX equivalent, this page delivers verified electrical parameters, thermal resistance values (R_th(j-sp) = 6–10 K/W), side-wettable flank package details, gate charge (Q_G(tot) = 10–18 nC), and AEC-Q101 qualification status for automotive-grade reliability assessment.

Technical Context

This device implements Trench MOSFET technology to achieve low on-resistance and fast switching performance. Its DFN2020MD-6 package features side-wettable flanks for automated optical solder inspection and a 2 × 2 × 0.65 mm ultra-thin footprint with six terminals - three drain pins (1, 2, 5), one gate (3), and two source pins (4, 8).

The MOSFET supports gate drive voltages from −20 V to +20 V, exhibits 1.3–2.7 V gate threshold voltage (V_GS(th)), and delivers 5 S forward transconductance (g_fs) at V_DS = 5 V and I_D = 5 A. Avalanche ruggedness is specified at 24 mJ (unclamped, T_j(init) = 25 °C, I_D = 0.75 A).

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	60 V - Maximum drain-source blocking voltage; defines safe operating ceiling in low-side switch configurations.
R_DS(on)	32–43 mΩ @ V_GS = 10 V, I_D = 5 A, T_j = 25 °C - Directly determines conduction loss and thermal rise under load.
I_D	13 A @ V_GS = 10 V, T_sp = 25 °C - Continuous drain current rating at standard PCB mounting (6 cm² drain pad).
Q_G(tot)	10–18 nC - Total gate charge required for full turn-on; impacts gate driver sizing and switching loss.
R_th(j-sp)	6–10 K/W - Junction-to-solder-point thermal resistance; critical for estimating local die temperature during pulsed operation.
T_j(max)	175 °C - Maximum allowable junction temperature; enables operation in under-hood automotive environments.
E_AS	24 mJ - Non-repetitive avalanche energy rating; confirms robustness against inductive load turn-off transients.

Pinout & Package

DFN2020MD-6 (SOT1220) is a leadless, thermally enhanced ultra-thin surface-mount package measuring 2.0 × 2.0 × 0.65 mm, featuring side-wettable flanks for automated optical solder joint inspection and optimized thermal path via exposed drain paddle.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 5, 6, 7	Drain (D)	Five parallel drain terminals connected to internal die drain metallization and exposed paddle - primary current path and thermal conduction path to PCB.
3	Gate (G)	Single gate input terminal; requires ≤20 V drive; 3.5 Ω internal gate resistance limits dV/dt-induced ringing.
4, 8	Source (S)	Two source terminals tied to internal source metallization - provide low-inductance return path and assist in current sharing and thermal distribution.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive applications including engine control modules and body electronics per stress test requirements.
Side-wettable flanks	Enables AOI (automated optical inspection) of solder joints without X-ray - reduces post-SMT defect escape rate.
Trench MOSFET architecture	Delivers lower R_DS(on) and higher cell density than planar MOSFETs - improves power efficiency in space-constrained designs.
Extended T_j range	Rated for continuous operation up to 175 °C - supports placement near heat sources in automotive ECUs and ADAS subsystems.
Ultra-thin 0.65 mm profile	Reduces board stack height in multi-layer automotive modules where Z-axis clearance is constrained.

Applications

Automotive Relay Driver

High-Speed Line Driver

Use Scenario: Driving electromagnetic relays in vehicle lighting, HVAC, and power window control modules.

IC Role / Device Role / Timing Role: Low-side switch controlling relay coil current; handles 10–15 A inductive loads with controlled turn-off to suppress flyback voltage.

Use Value: 24 mJ avalanche energy rating absorbs inductive kickback without external snubber, reducing BOM count and PCB area.

Use Scenario: Transmitting digital control signals across long PCB traces or cables in infotainment and gateway ECUs.

IC Role / Device Role / Timing Role: Fast-switching buffer stage with <11 ns turn-off delay and <4 ns fall time - preserves signal edge integrity at >1 MHz rates.

Use Value: Low Q_GD/Q_GS ratio (2.1/1.7 nC) minimizes Miller effect, enabling stable high-frequency switching without gate oscillation.

Low-Side Load Switch

Switching Power Supply Sync FET

Use Scenario: Enabling/disabling 12 V battery-fed subsystems (e.g., telematics, ADAS cameras) with reverse polarity and overcurrent protection.

IC Role / Device Role / Timing Role: Main power path switch with integrated thermal shutdown behavior via R_DS(on) temperature coefficient (175 °C max T_j).

Use Value: 32 mΩ R_DS(on) at 25 °C and 69 mΩ at 175 °C ensures predictable voltage drop and power loss across full automotive temperature range.

Use Scenario: Synchronous rectification in 12 V input DC-DC converters for ADAS domain controllers and radar modules.

IC Role / Device Role / Timing Role: Secondary-side switch replacing Schottky diode; commutates with precise timing relative to primary-side MOSFET.

Use Value: C_oss = 60 pF and Crss = 34 pF minimize capacitive losses during hard switching, improving converter efficiency above 90%.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel low-side switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor NTMFS4C09NT1G	60 V, 12.5 A, R_DS(on) = 33 mΩ @ 10 V, same DFN2020MD-6 package but non-AEC-Q101 rated.	Lacks automotive qualification; suitable for industrial/commercial power switches where AEC compliance is not mandated.	Select when cost sensitivity outweighs automotive qualification requirement and thermal margin allows for slightly higher R_DS(on).
Infineon BSC014N06LS6	60 V, 100 A, R_DS(on) = 1.4 mΩ @ 10 V, larger PG-TSDSON-8 package (3.3 × 3.3 mm), AEC-Q101 qualified.	Higher current capacity and lower R_DS(on), but requires larger PCB area and different thermal layout.	Choose for high-current (>20 A) automotive loads where thermal headroom and conduction loss dominate over size constraints.

Compared with NTMFS4C09NT1G, BUK6D43-60EX adds AEC-Q101 qualification and tighter R_DS(on) tolerance (32–43 mΩ vs. typ. 33 mΩ), while BSC014N06LS6 trades compactness for significantly lower on-resistance and higher current handling - making BUK6D43-60EX optimal for space-limited 10–13 A automotive switching nodes.

Availability

BUK6D43-60EX is available at Aetrix Electronics and suitable for automotive relay drivers, high-speed line drivers, low-side load switches, and synchronous rectifier circuits requiring stable component supply across extended temperature ranges and AEC-Q101 compliance.

Supply support for BUK6D43-60EX 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 BUK6D43-60EX belongs to Nexperia's TrenchMOS automotive power portfolio, engineered specifically for robust low-side switching in harsh-temperature automotive environments - emphasizing AEC-Q101 reliability, thermal resilience, and manufacturability in high-speed SMT lines.

FAQ

Is BUK6D43-60EX pin-compatible with other DFN2020MD-6 MOSFETs?

Yes - it shares the standardized SOT1220 footprint and 6-terminal pinout (drain–drain–gate–source–drain–drain). However, internal pin mapping varies by manufacturer; always verify pin function alignment using the specific device's datasheet before substitution, especially gate and source assignments.

What is the maximum recommended gate resistor for driving BUK6D43-60EX at 1 MHz?

A 6 Ω external gate resistor is validated in the datasheet for 1 MHz switching with 6 A drain current and 30 V V_DS. This value balances switching speed (t_f = 4 ns) and gate driver stress; increasing it beyond 10 Ω degrades turn-off performance and increases switching loss disproportionately.

Does BUK6D43-60EX include an integrated body diode? What are its recovery characteristics?

Yes - it integrates a monolithic source-drain diode with V_SD = 0.8–1.2 V at I_S = 2.3 A and T_j = 25 °C. Reverse recovery time (t_rr) is 15.5 ns and recovered charge (Q_r) is 8.3 nC under specified conditions - suitable for moderate-frequency synchronous rectification but not ultra-high-frequency zero-voltage switching.

How does R_DS(on) change with temperature, and what design margin should be applied?

R_DS(on) increases linearly with junction temperature: 32 mΩ at 25 °C rises to 69–93 mΩ at 175 °C. For worst-case conduction loss calculation, use the 175 °C max value. Derate continuous current to 8.2 A at T_sp = 100 °C and 5 A at T_amb = 25 °C on FR4 - align with Fig. 2 derating curves.

BUK6D43-60EX Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: 6-UDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 60 V

Current - Continuous Drain (Id) @ 25°C:: 5A (Ta)

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

Rds On (Max) @ Id, Vgs:: 43mOhm @ 5A, 10V

Vgs(th) (Max) @ Id:: 2.7V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 18 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 590 pF @ 30 V

FET Feature:: -

Power Dissipation (Max):: 15W (Tc)

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: DFN2020MD-6

BUK6D43-60EX FAQ

1.How can I place an order for BUK6D43-60EX through Aetrix?

Please submit a Request for Quotation (RFQ) for BUK6D43-60EX 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 BUK6D43-60EX reliable?

The price and inventory of BUK6D43-60EX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BUK6D43-60EX is usually 5 days.

3.What payment methods are accepted for BUK6D43-60EX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BUK6D43-60EX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BUK6D43-60EX?

BUK6D43-60EX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BUK6D43-60EX 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 BUK6D43-60EX?

For technical support, including BUK6D43-60EX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BUK6D43-60EX requirements.

6.How does Aetrix verify that BUK6D43-60EX is sourced from the original manufacturer or authorized distributors?

All BUK6D43-60EX 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 BUK6D43-60EX meets industry standards.

7.What is the process for return or replacement of BUK6D43-60EX?

All BUK6D43-60EX units undergo pre-shipment inspection (PSI). If there is an issue with BUK6D43-60EX, 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 BUK6D43-60EX part is unused and in its original packaging.

Return procedure for BUK6D43-60EX:

1.Submit a request within 90 days.

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

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