Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

Diodes Incorporated FZT653TA

Name: FZT653TA
Brand: Diodes Incorporated
SKU: FZT653TA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: FZT653TA

Manufacturer:: Diodes Incorporated

Category:: Single Bipolar Transistors

Package:: TO-261-4, TO-261AA

Datasheet:: FZT653TA.pdf

Description:: TRANS NPN 100V 2A SOT-223-3

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:174,077

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

FZT653TA from Diodes Incorporated is a 100V NPN high-performance bipolar junction transistor in SOT223 package, rated for 2A continuous collector current and 6A peak pulse current, with V_CE(sat) < 300mV at 1A, used in industrial power switching, DC-DC converter output stages, and motor drive H-bridge legs.

For engineers reviewing the FZT653TA datasheet, FZT653TA pinout, FZT653TA application, or FZT653TA equivalent, key selection criteria include breakdown voltage margin (BV_CEO = 100V), thermal resistance (R_θJA = 41.7°C/W on 50mm × 50mm 2oz copper), saturation voltage at high current, complementary PNP pairing (FZT753), and automotive-grade variant availability (FZT653Q).

Technical Context

The FZT653TA operates as a medium-power NPN switching transistor with robust safe operating area (SOA) up to 100V and 2A DC, supported by low R_θJL (12.9°C/W) for efficient heat transfer through the collector lead. Its f_T of 140–175MHz enables fast switching in PWM-controlled power stages.

It features pulsed measurement conditions (≤300µs width, ≤2% duty cycle) for V_CE(sat), h_FE, and switching times (t_on = 80ns, t_off = 1200ns), and is characterized across temperature (–55°C to +150°C) with guaranteed ESD ratings (HBM = 4kV, MM = 400V).

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	100V - Ensures reliable blocking in 48V and 72V industrial bus applications with safety margin.
I_C (continuous)	2A - Supports sustained load currents in compact SOT223 without forced cooling.
V_CE(sat) @ 1A/100mA	130–300mV - Minimizes conduction loss and self-heating in high-duty-cycle switching.
h_FE @ 1A	25–55 - Defines minimum base drive requirement for full saturation under max load.
f_T	140–175MHz - Enables clean turn-off in 100–500kHz SMPS designs with minimal storage time.
R_θJA (50×50mm 2oz)	41.7°C/W - Allows ~70°C rise at 3W dissipation, supporting thermally constrained PCB layouts.
ESD HBM	4000V - Provides handling robustness during manual assembly and board-level testing.

Pinout & Package

Package: SOT223 (Type DN), surface-mount, 4-pin configuration with exposed collector tab for thermal and electrical connection.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Emitter)	Current sink terminal	Connected to ground or low-side return path; electrically isolated from tab.
Pin 2 (Base)	Control input	Receives current-limited drive signal; requires ≥100mA for full saturation at 1A I_C.
Pin 3 (Collector)	Current source terminal	Internally bonded to exposed metal tab; must be connected to heatsink or large copper pour.
Pin 4 (Collector Tab)	Thermal & power node	Primary heat path and high-current return; electrically identical to Pin 3.

Key Features

Feature	Design Value
100V V_CEO rating	Enables use in 48V/72V systems with >20% overvoltage margin against transients.
Low V_CE(sat) at 2A	Reduces conduction loss to <1W at 2A, lowering thermal stress in unheatsinked designs.
SOT223 thermal performance	R_θJL = 12.9°C/W allows direct mounting to PCB copper, eliminating discrete heatsinks.
Complementary PNP pair	FZT753 shares identical package, ratings, and layout - simplifies dual-rail driver design.
Automotive-qualified variant	FZT653Q meets AEC-Q101, enabling drop-in qualification for automotive body control modules.

Applications

Industrial Power Supply

Brushed DC Motor Drive

Use Scenario: High-efficiency 48V input buck converter output switch in programmable logic controller (PLC) power rails.

IC Role / Device Role / Timing Role: Main NPN switching transistor in synchronous rectifier or single-ended forward topology.

Use Value: 100V BV_CEO withstands line surges; 2A I_C supports 10W output stage; low V_CE(sat) maintains >92% efficiency at full load.

Use Scenario: Low-side switch in H-bridge for 24V brushed motor in automated gate actuator.

IC Role / Device Role / Timing Role: One quadrant switch controlling motor direction and braking via PWM.

Use Value: Fast t_off (1200ns) enables precise 20kHz PWM control; SOA supports 6A stall current pulses without second breakdown.

LED Constant-Current Driver

Telecom DC-DC Module

Use Scenario: Series-pass transistor regulating current to high-brightness LED strings in streetlight drivers.

IC Role / Device Role / Timing Role: Linear or PWM-controlled current sink in constant-current feedback loop.

Use Value: Tight h_FE spread (25–55 @ 2A) ensures predictable base drive; 150°C T_J rating sustains operation in sealed enclosures.

Use Scenario: Primary-side switch in isolated 48V-to-12V telecom brick with strict thermal footprint limits.

IC Role / Device Role / Timing Role: High-voltage switching element in active clamp forward or flyback converter.

Use Value: R_θJA = 41.7°C/W on standard FR-4 allows 3W dissipation without heatsink; RoHS/Green compliance meets NEBS Level 3.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN switching transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ZXTN2012E6TA	Lower V_CEO (80V), higher h_FE (100 min @ 1A), same SOT223 package	Not suitable for >80V bus systems; better for low-voltage, high-gain linear amplification	Select when gain stability > voltage margin; avoid in 48V+ surge-prone environments
MJD127G	TO-220 package, higher I_C (8A), slower switching (t_off > 2µs), no RoHS/Green compliance	Requires heatsink and larger board area; unsuitable for space-constrained telecom modules	Choose only when >2A average current or legacy TO-220 footprint required

Compared with ZXTN2012E6TA and MJD127G, the FZT653TA uniquely balances 100V ruggedness, SOT223 thermal efficiency, and automotive-ready variants-making it optimal for compact, high-reliability industrial power switches where voltage margin and board-area constraints coexist.

Availability

FZT653TA is available at Aetrix Electronics and suitable for industrial power supplies, brushed DC motor drives, and telecom DC-DC modules requiring stable component supply, RoHS/Green compliance, and long-term lifecycle support.

Supply support for FZT653TA 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 is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions.

The FZT653TA belongs to Diodes' high-voltage bipolar transistor product line, engineered for ruggedized industrial switching, motor control, and telecom power conversion where voltage margin, thermal efficiency, and AEC-Q101 readiness are critical.

FAQ

What is the maximum allowable junction temperature for continuous operation?

The FZT653TA has an operating junction temperature range of –55°C to +150°C. For continuous DC operation, thermal design must ensure T_J remains ≤150°C under worst-case ambient and power dissipation conditions, using R_θJA = 41.7°C/W (50mm × 50mm 2oz copper) as the baseline thermal model.

Is the FZT653TA pin-compatible with the FZT753 PNP transistor?

Yes - both FZT653TA (NPN) and FZT753 (PNP) share identical SOT223 (Type DN) mechanical outline, pin assignment (Emitter-Base-Collector-Tab), and marking orientation. This enables mirrored PCB layout for complementary push-pull or H-bridge driver stages without redesign.

Does the "Green" designation affect soldering profile or reliability?

No - the "Green" status indicates halogen- and antimony-free molding compound (Br/Cl <900ppm each, Sb <1000ppm) and matte tin plating. It conforms fully to J-STD-020 moisture sensitivity Level 1 and requires standard SnPb or lead-free reflow profiles without modification.

Can the FZT653TA replace older SOT223 transistors like MMBT4401 in 48V systems?

No - the MMBT4401 has V_CEO = 40V and I_C = 600mA, making it unsafe for 48V bus applications due to insufficient voltage margin and current capability. The FZT653TA's 100V rating and 2A capacity provide necessary headroom and thermal headroom for such systems.

FZT653TA Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: TO-261-4, TO-261AA

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 2 A

Voltage - Collector Emitter Breakdown (Max):: 100 V

Vce Saturation (Max) @ Ib, Ic:: 500mV @ 200mA, 2A

Current - Collector Cutoff (Max):: 100nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 500mA, 2V

Power - Max:: 2 W

Frequency - Transition:: 175MHz

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-223-3

FZT653TA FAQ

1.How can I place an order for FZT653TA through Aetrix?

Please submit a Request for Quotation (RFQ) for FZT653TA 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 FZT653TA reliable?

The price and inventory of FZT653TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FZT653TA is usually 5 days.

3.What payment methods are accepted for FZT653TA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FZT653TA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for FZT653TA?

FZT653TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your FZT653TA 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 FZT653TA?

For technical support, including FZT653TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FZT653TA requirements.

6.How does Aetrix verify that FZT653TA is sourced from the original manufacturer or authorized distributors?

All FZT653TA 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 FZT653TA meets industry standards.

7.What is the process for return or replacement of FZT653TA?

All FZT653TA units undergo pre-shipment inspection (PSI). If there is an issue with FZT653TA, 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 FZT653TA part is unused and in its original packaging.

Return procedure for FZT653TA:

1.Submit a request within 90 days.

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

Tech Hub

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…