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

Nexperia USA Inc. NX138BKVL

Name: NX138BKVL
Brand: Nexperia USA Inc.
SKU: NX138BKVL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NX138BKVL

Manufacturer:: Nexperia USA Inc.

Category:: FETs, MOSFETs

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: NX138BKVL.pdf

Description:: MOSFET N-CH 60V 265MA TO236AB

Quantity:: RFQ Add To RFQ list

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Product details

Overview

NX138BKVL from Nexperia is a 60 V, single N-channel Trench MOSFET in SOT23 (TO-236AB) package, designed for low-side switching with 2.1 Ω R_DS(on) at V_GS = 10 V and I_D = 200 mA, 0.5–1.5 V gate threshold, and ESD protection >2 kV HBM - deployed in relay drivers and high-speed line drivers.

For engineers reviewing the NX138BKVL datasheet, NX138BKVL pinout, NX138BKVL application, or NX138BKVL equivalent, key selection considerations include its 265 mA continuous drain current at 25 °C ambient, fast 7.9 ns turn-on delay, 3.5 Ω max R_DS(on) over temperature, and compatibility with 2.5–10 V logic-level gate drive.

Technical Context

This discrete N-channel enhancement-mode MOSFET uses Trench technology to achieve low on-resistance and fast switching. Its gate threshold voltage (0.5–1.5 V) enables direct interface with 2.5 V and 3.3 V microcontrollers, while the integrated source-drain diode supports bidirectional current handling in load-switch configurations.

The device operates within -55 °C to 150 °C junction temperature range and features 350–400 K/W thermal resistance (junction-to-ambient, FR4 PCB), with normalized power derating down to zero at 125 °C ambient - critical for thermally constrained SMT designs.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	60 V - supports rail voltages up to 48 V DC systems with margin for transients
R_DS(on)	2.1 Ω typ @ V_GS = 10 V, I_D = 200 mA - enables <100 mW conduction loss at 200 mA load
V_GS(th)	0.5–1.5 V - ensures reliable turn-on with 2.5 V logic without level-shifting
I_D (cont)	265 mA @ T_amb = 25 °C - suitable for driving small relays, LEDs, or signal loads
Q_G(tot)	0.49 nC - allows sub-10 ns switching with low gate-drive impedance
ESD HBM	>2 kV - provides robustness against handling-induced electrostatic discharge
t_d(on)	7.9 ns - supports >50 MHz digital switching in pulse-width modulation circuits

Pinout & Package

Package: SOT23 (TO-236AB), surface-mount plastic package with 3 leads, 1.9 mm × 1.1 mm footprint, 0.45 mm nominal height, and drain-connected tab for thermal relief.

Pin/Terminal	Circuit Role	Design Meaning
1	Gate (G)	Control terminal accepting 0–20 V gate-source bias; low input capacitance (20.2 pF) minimizes driver loading
2	Source (S)	Reference node for gate drive and current return path; internally tied to substrate in standard N-channel configuration
3	Drain (D)	High-side output node; connected to copper pad on PCB for thermal dissipation (R_th(j-sp) = 65–75 K/W)

Key Features

Feature	Design Value
Low threshold voltage	0.5–1.5 V V_GS(th) enables direct 2.5 V/3.3 V MCU GPIO control without external level shifters
Very fast switching	7.9 ns turn-on delay + 5.1 ns fall time supports high-frequency PWM (>10 MHz edge rates)
Trench MOSFET architecture	Reduces R_DS(on) by ~30% vs planar equivalents at same die size, improving power efficiency in space-constrained layouts
ESD protection	>2 kV HBM rating eliminates need for external TVS on gate in most board-level ESD environments

Applications

Relay Driver

High-Speed Line Driver

Use Scenario: Driving 5 V or 12 V electromagnetic relays in industrial I/O modules and PLC output stages.

IC Role / Device Role / Timing Role: Low-side switch controlling relay coil current; handles inductive kickback via internal body diode.

Use Value: 60 V V_DS rating safely clamps flyback spikes; 265 mA I_D supports typical 10–50 mA relay coils with margin.

Use Scenario: Transmitting TTL/CMOS logic signals across short PCB traces or cables in test equipment and data acquisition systems.

IC Role / Device Role / Timing Role: Active pull-down element in open-drain bus interfaces or differential pair terminators.

Use Value: Sub-10 ns switching ensures signal integrity up to 50 Mbps; low C_iss (20.2 pF) minimizes capacitive loading on driven lines.

Low-Side Load Switch

Switching Power Supply Auxiliary Control

Use Scenario: Enabling/disabling power to sensors, displays, or peripheral ICs in battery-powered wearables and IoT nodes.

IC Role / Device Role / Timing Role: Controlled series switch between ground and load; operated in linear or saturated mode depending on duty cycle.

Use Value: 2.1 Ω R_DS(on) limits dropout to <500 mV at 200 mA, preserving battery runtime and enabling soft-start via PWM dimming.

Use Scenario: Controlling auxiliary rails (e.g., bias supplies, gate drivers, or feedback networks) in DC-DC converters and motor controllers.

IC Role / Device Role / Timing Role: Synchronous enable switch for secondary regulators or isolated feedback paths.

Use Value: 150 °C max junction temperature and 1.67 W P_tot at solder point allow operation in thermally dense power stages without forced cooling.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
DMN2004K-7	R_DS(on) = 1.8 Ω typ @ V_GS = 4.5 V; higher 30 V V_DS rating	Limited to ≤30 V systems; better suited for 3.3 V logic-only drive with no 5 V margin	Select when lower gate drive voltage (<3.3 V) and tighter R_DS(on) tolerance are prioritized over voltage headroom
BSS138DW-7-F	Dual N-channel; 50 V V_DS; R_DS(on) = 3.5 Ω typ @ V_GS = 10 V; SOT-363 package	Offers dual-channel integration but larger footprint and higher on-resistance	Choose for space-constrained dual-switch needs where shared gate control suffices and 2.1 Ω is not mandatory

Compared with DMN2004K-7 and BSS138DW-7-F, NX138BKVL delivers optimal balance of 60 V ruggedness, 2.1 Ω R_DS(on), and SOT23 compactness - making it preferred for 24–48 V industrial switching where both voltage margin and thermal efficiency matter.

Availability

NX138BKVL is available at Aetrix Electronics and suitable for relay drivers, high-speed line drivers, low-side loadswitches, and switching circuits requiring stable component supply across automotive-adjacent industrial and instrumentation programs.

Supply support for NX138BKVL 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 - high-volume, high-reliability, and energy-efficient components for automotive, industrial, mobile, and computing markets.

NX138BKVL belongs to Nexperia's TrenchMOS logic-level N-channel portfolio, engineered specifically for space- and power-sensitive low-voltage switching applications where fast response, low gate charge, and robust ESD performance are mandatory.

FAQ

What is the maximum continuous drain current for NX138BKVL at 100 °C ambient?

The maximum continuous drain current is 170 mA at T_amb = 100 °C, per the limiting values table. This reflects thermal derating due to reduced heat dissipation capability at elevated ambient temperatures, assuming standard FR4 PCB mounting with single-sided copper and tin-plated pads.

Does NX138BKVL have an integrated body diode, and what is its forward voltage?

Yes, NX138BKVL includes an inherent source-drain body diode. Its forward voltage is 0.86–1.2 V at I_S = 200 mA and T_j = 25 °C, as specified in the characteristics table - sufficient for freewheeling in relay and inductive load applications without external diodes.

Can NX138BKVL be used with 1.8 V logic-level gate drive?

No - the minimum guaranteed V_GS(th) is 0.5 V, but R_DS(on) rises sharply below 2.5 V. At V_GS = 1.8 V, R_DS(on) exceeds 10 Ω (per Fig. 9), causing excessive conduction loss. Reliable saturation requires ≥2.5 V gate drive, with optimal performance at ≥4.5 V.

What is the safe operating area (SOA) limitation for single-pulse operation?

For single-pulse operation (t_p ≤ 10 µs), the peak drain current is limited to 0.9 A at V_DS = 60 V, as defined in the limiting values table. This SOA boundary is validated under transient conditions and assumes proper PCB layout with adequate drain copper area to limit thermal runaway.

NX138BKVL Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: TrenchMOS™

Package/Case:: TO-236-3, SC-59, SOT-23-3

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:: 265mA (Ta)

Drive Voltage (Max Rds On, Min Rds On):: 2.5V, 10V

Rds On (Max) @ Id, Vgs:: 3.5Ohm @ 200mA, 10V

Vgs(th) (Max) @ Id:: 1.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 0.49 nC @ 30 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 20.2 pF @ 30 V

FET Feature:: -

Power Dissipation (Max):: 310mW (Ta)

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

NX138BKVL FAQ

1.How can I place an order for NX138BKVL through Aetrix?

Please submit a Request for Quotation (RFQ) for NX138BKVL 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 NX138BKVL reliable?

The price and inventory of NX138BKVL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NX138BKVL is usually 5 days.

3.What payment methods are accepted for NX138BKVL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NX138BKVL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NX138BKVL?

NX138BKVL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NX138BKVL 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 NX138BKVL?

For technical support, including NX138BKVL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NX138BKVL requirements.

6.How does Aetrix verify that NX138BKVL is sourced from the original manufacturer or authorized distributors?

All NX138BKVL 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 NX138BKVL meets industry standards.

7.What is the process for return or replacement of NX138BKVL?

All NX138BKVL units undergo pre-shipment inspection (PSI). If there is an issue with NX138BKVL, 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 NX138BKVL part is unused and in its original packaging.

Return procedure for NX138BKVL:

1.Submit a request within 90 days.

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

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