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

Diodes Incorporated ZXT13N20DE6TC

Name: ZXT13N20DE6TC
Brand: Diodes Incorporated
SKU: ZXT13N20DE6TC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZXT13N20DE6TC

Manufacturer:: Diodes Incorporated

Category:: Single Bipolar Transistors

Package:: SOT-23-6

Datasheet:: ZXT13N20DE6TC.pdf

Description:: TRANS NPN 20V 4.5A SOT-23-6

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ZXT13N20DE6 from Diodes Incorporated is a 20V NPN low-saturation switching transistor in SOT26 package, rated for 4.5A continuous collector current and 15A peak pulse current, with R_CE(SAT) = 38 mΩ and V_CE(sat) ≤ 75 mV at 1A - optimized for high-efficiency power switches in DC–DC converters and motor control circuits.

For engineers reviewing the ZXT13N20DE6 datasheet, ZXT13N20DE6 pinout, ZXT13N20DE6 application, or ZXT13N20DE6 equivalent, key selection criteria include its AEC-Q101 qualification, low on-resistance under high-current drive (IC/IB = 10–100), thermal resistance of 73°C/W (R_θJA, short-duration), and guaranteed h_FE down to 15A for robust switching control.

Technical Context

This NPN bipolar junction transistor operates as a saturated switch in medium-power applications, featuring a BV_CEO of 20 V and VEBO of 7.5 V to support gate-drive isolation and emitter-referenced biasing. Its f_T of 96 MHz enables fast switching with t_on = 115 ns and t_off = 485 ns under 10V/2A test conditions.

The device uses a thermally enhanced SOT26 package with direct lead-to-junction thermal path (R_θJL = 18.6°C/W) and is characterized for h_FE across 10mA–15A, supporting both linear gain control and hard-switching operation with IC/IB ratios from 10 to 100.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	20 V - Maximum safe collector-emitter voltage before breakdown in common-emitter configuration.
I_C (continuous)	4.5 A - Continuous current handling capacity without thermal derating on standard PCB layout.
R_CE(SAT)	38 mΩ - Equivalent on-resistance determining conduction loss at high current (e.g., ~170 mV drop at 4.5A).
V_CE(sat) @ 1A	≤75 mV - Low saturation voltage enabling <0.075 W conduction loss at 1A, critical for efficiency in battery-powered systems.
h_FE @ 15A	15–45 - Validated DC current gain at full-rated pulse current, ensuring reliable base drive design for high-current switching.
f_T	96 MHz - Transition frequency confirming usable bandwidth for sub-100 ns switching transitions.
ESD HBM	4 kV - Human-body-model ESD rating supporting robustness in automated assembly and field environments.

Pinout & Package

Package: SOT26 - surface-mount, 6-pin plastic package with exposed collector tab for thermal enhancement; moisture sensitivity level 1 per J-STD-020; weight ≈ 0.015 g.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Emitter)	E	Current return path; tied to ground or low-side reference in switching topologies.
Pin 2 (Base)	B	Control input requiring ~45 mA drive for full 4.5A saturation; low V_BE(on) (0.85–0.90 V) eases driver design.
Pin 3 (Collector)	C	Main power output node; electrically and thermally connected to package tab for heat dissipation.
Pins 4–6 (Collector)	C (common)	Internally bonded to Pin 3; multiplexed collector terminals reduce trace inductance and improve thermal spreading.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per JEDEC standards.
Low V_CE(sat) at high I_C	≤230 mV at 4.5A/45mA drive - minimizes power loss and self-heating during sustained conduction.
High peak current capability	15A I_CM - supports pulsed loads such as motor startup surges or capacitor charging transients.
Thermally optimized SOT26	R_θJL = 18.6°C/W - enables efficient heat transfer from die to PCB copper via collector leads and tab.
Halogen- and antimony-free	<900 ppm Br/Cl, <1000 ppm Sb - meets global environmental compliance for industrial and automotive end equipment.

Applications

DC–DC Converters

Power Management Functions

Use Scenario: High-efficiency synchronous buck converter operating at 300 kHz–1 MHz in telecom power supplies.

IC Role / Device Role / Timing Role: Low-side switching transistor delivering up to 4.5A load current with minimal conduction loss.

Use Value: 38 mΩ R_CE(SAT) reduces I²R loss by >40% vs. comparable 100 mΩ devices at 2A, improving system efficiency by 1.2–1.8%.

Use Scenario: Load switch controlling 5V/3.3V rail sequencing in FPGA-based industrial controllers.

IC Role / Device Role / Timing Role: Discrete power switch enabling controlled inrush current and fault-isolated rail enablement.

Use Value: Guaranteed h_FE ≥300 at 1A ensures stable turn-on with standard GPIO-level base drive, eliminating need for external driver ICs.

Power Switches

Motor Control

Use Scenario: Solid-state relay replacement in programmable logic controller (PLC) output modules.

IC Role / Device Role / Timing Role: Medium-power switching element driving solenoids, valves, or indicator lamps (≤20V, ≤4A).

Use Value: 20V V_CEO and 4 kV ESD HBM provide margin against inductive kickback and ESD events in factory-floor environments.

Use Scenario: H-bridge low-side driver for 12V brushed DC motors in automotive HVAC actuators.

IC Role / Device Role / Timing Role: Fast-turning NPN switch synchronized with complementary high-side FET for bidirectional control.

Use Value: 115 ns t_on/485 ns t_off enables clean commutation at PWM frequencies up to 20 kHz without shoot-through risk.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ZXT13N50DE6	Higher V_CEO (50 V) but higher R_CE(SAT) (60 mΩ); same SOT26 package and AEC-Q101 rating.	Better suited for 48V bus applications; less efficient at 12V/4.5A due to higher conduction loss.	Select when system voltage exceeds 25V and thermal margin allows for +58% R_CE(SAT).
DMT3005LPSQ-13	30V MOSFET in SOT26; R_DS(on) = 4.5 mΩ @ V_GS = 10V; no base current required.	Lower gate drive complexity but requires ≥4.5V gate drive; lacks bipolar's inherent current gain at low V_GS.	Prefer for high-frequency (>500 kHz) or ultra-low-loss designs where gate driver availability permits.

Compared with ZXT13N50DE6 and DMT3005LPSQ-13, ZXT13N20DE6 delivers optimal balance of low-voltage saturation performance, proven bipolar drive simplicity, and automotive-grade reliability - making it preferred for cost-sensitive, thermally constrained 12–20V switching nodes where base drive current is readily available.

Availability

ZXT13N20DE6 is available at Aetrix Electronics and suitable for DC–DC converters, power management functions, and motor control applications requiring stable component supply, AEC-Q101 compliance, and consistent low-saturation performance across production volumes.

Supply support for ZXT13N20DE6 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 components for automotive, industrial, and computing markets.

ZXT13N20DE6 belongs to Diodes' ZXT series of low-saturation bipolar transistors, engineered specifically for high-current, high-efficiency switching in space-constrained power stages where thermal performance and AEC-Q101 validation are mandatory.

FAQ

What is the maximum allowable base current for continuous operation?

The absolute maximum rating specifies I_B = 500 mA, but continuous operation at this level is not recommended. For reliable 4.5A collector current, the datasheet recommends I_B = 45 mA (IC/IB = 100). Sustained base currents above 100 mA risk thermal runaway and accelerated degradation of h_FE stability.

Can ZXT13N20DE6 be used in linear amplifier configurations?

No - this device is characterized and optimized exclusively for saturated switching operation. Its h_FE variation across 10mA–15A and lack of linearity specifications (e.g., distortion, f_T flatness) make it unsuitable for analog amplification. Use dedicated RF or audio transistors for linear applications.

Is the SOT26 package lead-free and RoHS-compliant?

Yes - ZXT13N20DE6 is fully RoHS-compliant per EU Directive 2011/65/EU, with no purposely added lead. Its matte tin-plated leads meet MIL-STD-202 solderability requirements, and the molding compound is halogen- and antimony-free ("Green" per Diodes' specification).

How does thermal derating work above 25°C ambient?

Power dissipation must be linearly derated at 13.6 mW/°C above +25°C when mounted on a 25 mm × 25 mm 1 oz copper pad (Note 6). At +100°C ambient, maximum allowed PD drops to 1.7 W − (75 × 0.0136) = 0.68 W, requiring careful PCB layout or forced-air cooling for sustained 4.5A operation.

ZXT13N20DE6TC Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: SOT-23-6

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 4.5 A

Voltage - Collector Emitter Breakdown (Max):: 20 V

Vce Saturation (Max) @ Ib, Ic:: 230mV @ 45mA, 4.5A

Current - Collector Cutoff (Max):: 100nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 300 @ 1A, 2V

Power - Max:: 1.1 W

Frequency - Transition:: 96MHz

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-6

ZXT13N20DE6TC FAQ

1.How can I place an order for ZXT13N20DE6TC through Aetrix?

Please submit a Request for Quotation (RFQ) for ZXT13N20DE6TC 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 ZXT13N20DE6TC reliable?

The price and inventory of ZXT13N20DE6TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXT13N20DE6TC is usually 5 days.

3.What payment methods are accepted for ZXT13N20DE6TC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXT13N20DE6TC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZXT13N20DE6TC?

ZXT13N20DE6TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZXT13N20DE6TC 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 ZXT13N20DE6TC?

For technical support, including ZXT13N20DE6TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXT13N20DE6TC requirements.

6.How does Aetrix verify that ZXT13N20DE6TC is sourced from the original manufacturer or authorized distributors?

All ZXT13N20DE6TC 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 ZXT13N20DE6TC meets industry standards.

7.What is the process for return or replacement of ZXT13N20DE6TC?

All ZXT13N20DE6TC units undergo pre-shipment inspection (PSI). If there is an issue with ZXT13N20DE6TC, 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 ZXT13N20DE6TC part is unused and in its original packaging.

Return procedure for ZXT13N20DE6TC:

1.Submit a request within 90 days.

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

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