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

Diodes Incorporated ZXTN4004KQTC

Name: ZXTN4004KQTC
Brand: Diodes Incorporated
SKU: ZXTN4004KQTC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZXTN4004KQTC

Manufacturer:: Diodes Incorporated

Category:: Single Bipolar Transistors

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: ZXTN4004KQTC.pdf

Description:: TRANS NPN 150V 1A TO-252-3

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Product details

Overview

ZXTN4004KQTC from Diodes Incorporated is a 150V NPN bipolar junction transistor optimized for high-voltage LED backlight driving in large-format LCD TVs, featuring BV_CEO ≥ 150 V, h_FE > 100 at I_C = 150 mA / V_CE = 0.25 V, continuous collector current of 1 A, TO252 (DPAK) surface-mount package, and AEC-Q101 qualification for automotive-grade reliability.

For engineers reviewing the ZXTN4004KQTC datasheet, ZXTN4004KQTC pinout, ZXTN4004KQTC application in LED backlight circuits, or ZXTN4004KQTC equivalent for high-voltage switching, this page delivers verified electrical parameters, thermal derating curves, JEDEC-compliant ESD ratings (HBM 4 kV), and automotive PPAP-capable supply context.

Technical Context

This NPN transistor operates as a high-voltage linear or switched-mode current sink in constant-current LED string drivers, supporting up to 150 V collector-emitter blocking and delivering stable gain (h_FE = 60–100) across –55°C to +125°C junction temperatures. Its low V_CE(sat) ≤ 0.25 V at I_C = 100 mA / I_B = 5 mA enables efficient power dissipation control in thermally constrained TV backlight modules.

Designed for robustness in automotive and industrial environments, it meets AEC-Q101 stress testing requirements including HBM ESD (4 kV), MM ESD (400 V), and moisture sensitivity level 1. The exposed collector pad in the TO252 package provides R_θJL = 12 °C/W for direct PCB thermal coupling - critical for sustained 1 A operation under pulsed or DC conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	150 V - Enables direct drive of multi-LED series strings up to ~120 V in TV backlight applications without cascaded topology.
I_C (cont)	1 A - Supports high-brightness LED arrays requiring >800 mA steady-state current per channel.
h_FE	60–100 - Ensures predictable base drive sizing across temperature (–55°C to +125°C) with minimal gain variation.
V_CE(sat)	≤ 0.25 V @ I_C=100 mA/I_B=5 mA - Limits conduction loss to <25 mW at rated current, reducing thermal load on PCB copper area.
R_θJL	12 °C/W - Allows direct thermal path from die to PCB copper pour, enabling 3.8 W max power dissipation with proper layout.
ESD HBM	4,000 V - Meets IEC 61000-4-2 Level 4 immunity requirements for assembly and field handling in production lines.

Pinout & Package

Package: TO252 (DPAK), surface-mount, with exposed collector pad for thermal management. Molded green compound (UL 94V-0), matte tin-plated leads, 0.34 g weight.

Pin/Terminal	Circuit Role	Design Meaning
Emitter (E)	Current return path	Connected to ground or current-sense resistor; low-impedance terminal for feedback stability in linear LED drivers.
Base (B)	Control input	Receives TTL- or microcontroller-compatible drive; requires 5 mA base current for full saturation at 100 mA collector load.
Collector (C)	High-side switch node	Exposed pad serves as primary thermal interface; electrically connected to collector; must be soldered to ≥50 mm² 2 oz copper for rated 3.8 W dissipation.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive cabin display backlighting with extended temperature cycling and humidity exposure compliance.
Green compound (halogen/antimony-free)	Meets IEC 61249-2-21 and JEDEC J-STD-70A for environmentally restricted electronics manufacturing.
TO252 thermal performance	R_θJL = 12 °C/W enables 1 A continuous operation with ≤40°C rise over ambient using standard FR4 PCB layout.
High BV_CEO	150 V rating supports direct connection to 120 VAC-derived DC bus rails without additional voltage-clamping circuitry.

Applications

LED TV Backlight Driver

Automotive Display Backlight

Use Scenario: Driving 12–24 series-connected white LEDs in 4K UHD LCD TV edge-lit backlight units.

IC Role / Device Role / Timing Role: High-voltage NPN current sink operating in linear or PWM-modulated mode to regulate LED string current.

Use Value: Delivers stable 150 mA–1 A current with <±3% drift over temperature due to tight h_FE consistency and low V_CE(sat).

Use Scenario: Powering instrument cluster and infotainment display backlights in vehicles meeting ISO 16750-2 electrical environment specs.

IC Role / Device Role / Timing Role: Switching element in constant-current LED driver stage, interfacing with automotive-grade PWM controllers.

Use Value: AEC-Q101 qualification ensures operation across –40°C to +105°C ambient with no parameter shift beyond spec limits.

Industrial Panel Lighting

Commercial Signage Driver

Use Scenario: Controlling high-lumen LED arrays in factory HMIs and control panels exposed to vibration and wide ambient swings.

IC Role / Device Role / Timing Role: Primary high-side switch in isolated flyback-derived constant-current output stage.

Use Value: 4 kV HBM ESD rating prevents field failures during maintenance or rework in ungrounded industrial settings.

Use Scenario: Managing brightness and dimming profiles in outdoor digital signage powered from 120 VAC rectified supplies.

IC Role / Device Role / Timing Role: Linear pass transistor regulating current into parallel LED strings with analog dimming input.

Use Value: 150 V V_CEO eliminates need for external transient voltage suppressors when used with 120 VAC-derived 170 V_PK rails.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage NPN switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ZXTN4004F	Same die, TO220 package; higher R_θJA (60 °C/W vs. 33 °C/W); no exposed pad.	Suitable for lower-power (<500 mA), through-hole prototyping or legacy board designs.	Select only if TO220 mechanical fit or manual assembly is required; not recommended for high-density SMT LED drivers.
MJD127G	100 V V_CEO, h_FE = 30–120, TO252 package, non-AEC-Q101.	Limited to ≤100 V LED strings; lacks automotive qualification and 4 kV ESD rating.	Acceptable for cost-sensitive consumer displays where AEC-Q101 and 150 V margin are not required.

Compared with ZXTN4004F and MJD127G, ZXTN4004KQTC uniquely combines 150 V blocking, AEC-Q101 compliance, and TO252 thermal efficiency - making it the only choice for production-grade, high-reliability LED backlight systems demanding both voltage headroom and automotive traceability.

Availability

ZXTN4004KQTC is available at Aetrix Electronics and suitable for LED TV backlight driver design, automotive display lighting, and industrial panel illumination requiring stable component supply with full automotive traceability and PPAP documentation support.

Supply support for ZXTN4004KQTC 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 consumer markets with over 50 years of power management expertise.

ZXTN4004KQTC belongs to Diodes' high-voltage bipolar transistor product line, engineered specifically for energy-efficient, thermally robust LED current regulation in space-constrained, high-brightness display systems.

FAQ

What is the maximum continuous collector current for ZXTN4004KQTC at 100°C case temperature?

At T_C = 100°C, the maximum continuous collector current is derated to approximately 0.65 A based on the published thermal derating curve. This value assumes the exposed collector pad is soldered to ≥50 mm² of 2 oz copper on FR4, with still-air conditions. Operation above this limit risks exceeding the 150°C maximum junction temperature.

Does ZXTN4004KQTC support PWM dimming in LED backlight applications?

Yes - its fast switching times (t_r = 426 ns, t_f = 294 ns at V_CC = 120 V) enable clean PWM dimming up to 20 kHz without visible flicker. Base drive must deliver ≥5 mA peak current with <100 ns rise/fall to maintain saturation during high-frequency transitions.

How does the TO252 package's exposed collector pad affect PCB layout?

The exposed collector pad must be connected directly to a dedicated copper pour tied to the system ground plane or current return path. Minimum recommended pad area is 50 mm² (e.g., 7 mm × 7 mm) with ≥4 thermal vias (0.3 mm diameter) to inner ground layers to achieve the specified R_θJL = 12 °C/W and prevent localized overheating.

Is ZXTN4004KQTC pin-compatible with ZXTN4004KTC?

Yes - both share identical TO252 pinout (Emitter-Base-Collector), same die, and identical electrical specifications. The "Q" suffix denotes automotive PPAP capability and AEC-Q101 compliance; the "T" suffix indicates standard commercial grade. No layout or schematic changes are needed when upgrading from KTC to KQTC.

ZXTN4004KQTC Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 1 A

Voltage - Collector Emitter Breakdown (Max):: 150 V

Vce Saturation (Max) @ Ib, Ic:: 250mV @ 5mA, 100mA

Current - Collector Cutoff (Max):: 500nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 150mA, 250mV

Power - Max:: 3.8 W

Frequency - Transition:: -

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: TO-252-3

ZXTN4004KQTC FAQ

1.How can I place an order for ZXTN4004KQTC through Aetrix?

Please submit a Request for Quotation (RFQ) for ZXTN4004KQTC 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 ZXTN4004KQTC reliable?

The price and inventory of ZXTN4004KQTC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXTN4004KQTC is usually 5 days.

3.What payment methods are accepted for ZXTN4004KQTC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXTN4004KQTC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZXTN4004KQTC?

ZXTN4004KQTC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZXTN4004KQTC 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 ZXTN4004KQTC?

For technical support, including ZXTN4004KQTC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXTN4004KQTC requirements.

6.How does Aetrix verify that ZXTN4004KQTC is sourced from the original manufacturer or authorized distributors?

All ZXTN4004KQTC 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 ZXTN4004KQTC meets industry standards.

7.What is the process for return or replacement of ZXTN4004KQTC?

All ZXTN4004KQTC units undergo pre-shipment inspection (PSI). If there is an issue with ZXTN4004KQTC, 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 ZXTN4004KQTC part is unused and in its original packaging.

Return procedure for ZXTN4004KQTC:

1.Submit a request within 90 days.

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

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