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

Diodes Incorporated ZXM61N02FTC

Name: ZXM61N02FTC
Brand: Diodes Incorporated
SKU: ZXM61N02FTC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZXM61N02FTC

Manufacturer:: Diodes Incorporated

Category:: FETs, MOSFETs

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

Datasheet:: ZXM61N02FTC.pdf

Description:: MOSFET N-CH 20V 1.7A SOT23-3

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Product details

Overview

ZXM61N02FTC from Diodes Incorporated (formerly Zetex) is a 20V N-channel enhancement-mode MOSFET in SOT-23 package, with R_DS(on) = 0.18 Ω at V_GS = 4.5V, I_D = 0.93A, and V_(BR)DSS = 20V. It serves as a low-voltage power switch in compact DC-DC converters, load disconnect circuits, and motor drive stages where fast switching and low gate drive are critical.

For engineers reviewing the ZXM61N02FTC datasheet, ZXM61N02FTC pinout, ZXM61N02FTC application, or ZXM61N02FTC equivalent, key selection criteria include its 0.18Ω on-resistance at 4.5V gate drive, 7.4A pulsed drain current capability, 12.9ns reverse recovery time, and SOT-23 thermal performance with R_θJA = 155°C/W under short-pulse conditions.

Technical Context

This MOSFET employs a high-density planar structure optimized for low R_DS(on) and fast switching-achieved via reduced gate charge (Q_g = 3.4nC) and low Crss (30pF). Its 0.7V gate threshold enables compatibility with 1.8V–3.3V logic-level control.

The device integrates a robust body diode with V_SD = 0.95V at I_S = 0.93A and t_rr = 12.9ns, supporting synchronous rectification and bidirectional current handling in buck converters and H-bridge motor drivers.

Key Specifications

Parameter	Value and Actual Design Meaning
V_(BR)DSS	20V - Maximum blocking voltage before avalanche conduction; defines safe operation in ≤12V rail systems.
R_DS(on)	0.18Ω @ V_GS=4.5V, I_D=0.93A - Enables <170mW conduction loss at 1A, critical for thermally constrained SOT-23 layouts.
Q_g	3.4nC - Low total gate charge reduces driver power and speeds turn-on/turn-off (t_d(on) = 2.4ns).
I_D (cont)	1.7A @ T_A=25°C - Continuous current rating limited by 806mW power dissipation and 155°C/W junction-to-ambient thermal resistance.
t_rr	12.9ns - Fast body diode recovery minimizes switching losses and voltage spikes in hard-switched topologies.
V_GS(th)	0.7V (min) - Ensures reliable turn-on with 1.8V GPIO or low-voltage microcontroller outputs.
C_iss	160pF - Input capacitance impacts gate drive loop stability and Miller effect in high-frequency PWM applications.

Pinout & Package

Supplied in JEDEC-standard SOT-23 package (3-pin, surface-mount), with 2.67–3.05mm length, 1.20–1.40mm width, and 1.9mm nominal lead pitch. Thermal performance validated per Note (b): R_θJA = 155°C/W for t < 5s on FR4 PCB.

Pin/Terminal	Circuit Role	Design Meaning
1 (Source)	Current return path / body diode cathode	Connected to ground or low-side reference; carries continuous source current up to 0.8A.
2 (Gate)	Control electrode	Accepts logic-level voltage (0.7–12V); requires <3.4nC charge for full enhancement.
3 (Drain)	Power output terminal / body diode anode	Switches load to supply rail; handles 20V blocking and 7.4A pulsed drain current.

Key Features

Feature	Design Value
Low R_DS(on)	0.18Ω at 4.5V drive enables high-efficiency operation in battery-powered 3.3V/5V systems.
Fast switching	2.4ns turn-on delay + 4.2ns rise time supports >1MHz DC-DC operation without excessive gate drive loss.
Logic-level gate	0.7V V_GS(th) ensures compatibility with modern ultra-low-voltage MCUs and PMICs.
Low Q_gd	0.8nC gate-drain charge suppresses Miller-induced shoot-through in half-bridge configurations.
Robust body diode	12.9ns t_rr and 5.2nC Q_rr support efficient freewheeling in synchronous buck and motor control.

Applications

DC-DC Converters

Load Disconnect Switches

Use Scenario: Step-down regulation in portable USB-C PD adapters and IoT sensor nodes.

IC Role / Device Role / Timing Role: Low-side synchronous rectifier in 500kHz–2MHz buck converter topology.

Use Value: 0.18Ω R_DS(on) reduces conduction loss by >35% vs. typical 0.28Ω alternatives at 1A, extending battery runtime.

Use Scenario: Controlled power sequencing in industrial PLC I/O modules.

IC Role / Device Role / Timing Role: High-side or low-side load switch enabling firmware-controlled rail enable/disable.

Use Value: 0.7V V_GS(th) allows direct drive from 1.8V microcontroller GPIO, eliminating level-shifter components.

Motor Control Stages

Power Management Functions

Use Scenario: Half-bridge leg in 12V brushed DC motor drivers for HVAC actuators.

IC Role / Device Role / Timing Role: Low-side switch with fast body diode recovery for PWM-driven inductive loads.

Use Value: 12.9ns t_rr limits voltage overshoot during commutation, reducing need for snubbers and EMI filtering.

Use Scenario: Power-path management in medical wearable devices with dual Li-ion cells.

IC Role / Device Role / Timing Role: Reverse-polarity protection and battery isolation switch.

Use Value: 20V V_(BR)DSS accommodates 16.8V fully charged 4S Li-ion stacks while maintaining margin for transients.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel logic-level MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
DMN2016LFG-7	R_DS(on) = 0.16Ω @ 4.5V (lower), but Q_g = 4.5nC (higher); SOT-23-3 package identical.	Better conduction efficiency but slower switching; less suitable for >1MHz designs.	Prefer when thermal headroom is limited and switching frequency ≤500kHz.
AO3400	R_DS(on) = 0.028Ω @ 10V (not 4.5V); V_GS(th) = 1.0V min - requires ≥2.5V gate drive for full enhancement.	Higher threshold risks incomplete turn-on with 1.8V logic; superior R_DS(on) only at higher V_GS.	Prefer only if system uses ≥3.3V GPIO and prioritizes ultra-low R_DS(on) over gate drive simplicity.

Compared with DMN2016LFG-7 and AO3400, ZXM61N02FTC delivers optimal balance of low gate-threshold, moderate R_DS(on), and minimal Q_g - making it uniquely suited for space-constrained, low-voltage, high-frequency power switches where driver simplicity and thermal efficiency are co-critical.

Availability

ZXM61N02FTC is available at Aetrix Electronics and suitable for DC-DC converters, load disconnect switches, and motor control stages requiring stable component supply across production lifecycles.

Supply support for ZXM61N02FTC 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

Diodes Incorporated acquired Zetex Semiconductors in 2008 and maintains its high-performance analog and power portfolio, focusing on energy-efficient, small-signal, and power management solutions.

ZXM61N02FTC belongs to Zetex's legacy "ZXM" logic-level MOSFET family, engineered specifically for low-voltage, high-density power switching in portable and space-constrained applications.

FAQ

What is the maximum continuous drain current at 70°C ambient temperature?

The ZXM61N02FTC supports 1.3A continuous drain current at T_A = 70°C, derated from 1.7A at 25°C per its 6.4mW/°C linear derating factor and 806mW P_D rating. This reflects thermal limits of the SOT-23 package under standard PCB mounting conditions.

Does this MOSFET require a gate resistor for stability in switching applications?

A gate resistor (typically 5–22Ω) is recommended to dampen ringing caused by gate-source inductance and parasitic capacitances. The datasheet test circuit uses R_G = 6.2Ω, and layout-dependent oscillation has been observed without external gate resistance at >500kHz switching frequencies.

Can ZXM61N02FTC be used in reverse polarity protection circuits?

Yes - configured as a high-side switch with source tied to input and drain to load, its 20V V_(BR)DSS and 0.95V body diode forward voltage provide effective reverse-voltage blocking up to 18V input, provided gate is driven above V_IN − V_GS(th) using a charge pump or bootstrap circuit.

Is the SOT-23 package lead-free and RoHS-compliant?

Yes - ZXM61N02FTC is manufactured with lead-free terminations and complies with EU RoHS Directive 2011/65/EU and REACH SVHC regulations. The device marking "N02" and date code confirm compliance per Diodes Incorporated's standard product release documentation.

ZXM61N02FTC Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

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):: 20 V

Current - Continuous Drain (Id) @ 25°C:: 1.7A (Ta)

Drive Voltage (Max Rds On, Min Rds On):: 2.7V, 4.5V

Rds On (Max) @ Id, Vgs:: 180mOhm @ 930mA, 4.5V

Vgs(th) (Max) @ Id:: 700mV @ 250µA (Min)

Gate Charge (Qg) (Max) @ Vgs:: 3.4 nC @ 4.5 V

Vgs (Max):: ±12V

Input Capacitance (Ciss) (Max) @ Vds:: 160 pF @ 15 V

FET Feature:: -

Power Dissipation (Max):: 625mW (Ta)

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

ZXM61N02FTC FAQ

1.How can I place an order for ZXM61N02FTC through Aetrix?

Please submit a Request for Quotation (RFQ) for ZXM61N02FTC 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 ZXM61N02FTC reliable?

The price and inventory of ZXM61N02FTC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXM61N02FTC is usually 5 days.

3.What payment methods are accepted for ZXM61N02FTC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXM61N02FTC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZXM61N02FTC?

ZXM61N02FTC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZXM61N02FTC 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 ZXM61N02FTC?

For technical support, including ZXM61N02FTC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXM61N02FTC requirements.

6.How does Aetrix verify that ZXM61N02FTC is sourced from the original manufacturer or authorized distributors?

All ZXM61N02FTC 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 ZXM61N02FTC meets industry standards.

7.What is the process for return or replacement of ZXM61N02FTC?

All ZXM61N02FTC units undergo pre-shipment inspection (PSI). If there is an issue with ZXM61N02FTC, 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 ZXM61N02FTC part is unused and in its original packaging.

Return procedure for ZXM61N02FTC:

1.Submit a request within 90 days.

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

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