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Diodes Incorporated

Diodes Incorporated ZXTR2005Z Linear Voltage Regulators

100V INPUT, 5V 30mA REGULATOR TRANSISTOR

ZXTR2005Z Datasheet

Device Type

High Voltage Linear Regulator Transistor

Package

SOT89

Internal Resistor

150kΩ

Automotive Qualification

AEC-Q101 qualified

Diodes Incorporated ZXTR2005Z High Voltage Linear Regulator

100V INPUT, 5V 30mA REGULATOR TRANSISTOR

ZXTR2005Z is a high-voltage 5V linear regulator transistor in SOT89 package, integrating a transistor, Zener diode and resistor for compact auxiliary power regulation from inputs up to 100V. ZXTR2005Z is a 100V input, fixed 5V regulator transistor from Diodes Incorporated, designed for compact high-voltage linear regulation applications. The device integrates a transistor, Zener diode and resistor into a single SOT89 package, providing a simplified alternative to discrete regulator circuits. With a regulated 5V output, high input voltage capability and AEC-Q101 qualification, ZXTR2005Z is well suited for DC-DC converter startup circuits, networking equipment, telecommunications systems, PoE applications and industrial auxiliary power supplies.

Key Features

  • High Voltage InputSupports regulated operation from 10V to 100V input
  • Fixed 5V OutputProvides 5V nominal regulated output with ±10% tolerance
  • Integrated Regulator StructureCombines transistor, Zener diode and resistor in one device
  • Compact SOT89 PackageReduces PCB space compared with discrete solutions
  • Low Component CountHelps simplify high-voltage bias and startup supply designs
  • AEC-Q101 QualifiedSuitable for high-reliability applications

Target Applications

  • DC-DC Converter Startup
  • PoE Equipment
  • Networking Hardware
  • Telecommunications
  • Industrial Control
  • High Voltage Auxiliary Supply

Ordering Variants

Compare 3 ZXTR2005Z part numbers by package, electrical parameters, lifecycle, and availability. Use RFQ for stock and lead-time confirmation.

Part NumberDescriptionPackage TypeManufacturerLifecycleRoHSAvailabilityAction
ZXTR2005Z-13IC REG LINEAR 5V 38MA SOT89TO-243AADiodes IncorporatedActiveCompliantIn Stock
RFQ
ZXTR2005Z-7IC REG LINEAR 5V 38MA SOT89TO-243AADiodes IncorporatedActiveCompliantIn Stock
RFQ
ZXTR2005ZQ-13IC REG LINEAR 5V 38MA SOT89-3TO-243AA---In Stock
RFQ

Ordering Code Differences

How suffixes on ZXTR2005Z map to package, grade, and reel options.

ZXTR2005Z uses a shared prefix; characters after the prefix encode orderable options. Two lines with the same prefix are not drop-in replacements unless the differing columns match your need.

Suffixes seen here: 13, 7, Q-13.

Full MPN examples: ZXTR2005Z-13, ZXTR2005Z-7, ZXTR2005ZQ-13.

Tip: photograph or copy the reel label — reel diameter, QTY per reel, and moisture sensitivity level (MSL) are often suffix-driven and won't show in the schematic.

How to Choose the Right ZXTR2005Z Power Management ICs

📦

Match the Footprint First

Packages here: TO-243AA. Open the land-pattern drawing before you substitute a different suffix.

⚡

Electrical Headroom

Compare voltage and current columns in the variant table. For ZXTR2005Z, a suffix with lower voltage or current rating will not survive the same circuit without recalculation.

🔢

Copy the full MPN

Do not BOM only "ZXTR2005Z" — include the full suffix (e.g. 13, 7, Q-13). RFQ with reel/tube preference and required date code.

🌡️

Temp Grade Letter Matters

Commercial (0–70 °C) and industrial (−40–85 °C+) suffixes look similar in the prefix — confirm ambient + self-heating, not just the first page of the datasheet.

Technical Specifications

Core parameters for ZXTR2005Z product family

Identity

Base Model
ZXTR2005Z
Manufacturer
Diodes Incorporated
Listed Variants
3

Variant Parameters

Package Type
TO-243AA
Lifecycle Status
Active
RoHS Status
Compliant

Source ZXTR2005Z with Octatronics

Request stock confirmation, lead time, date code, and pricing for all 3 ordering variants from Diodes Incorporated. Our team supports active, EOL, and hard-to-find component sourcing.

  • Original manufacturer parts with traceability options
  • BOM upload and multi-line RFQ support
  • Package, grade, and compliance verification
Request QuoteView Diodes IncorporatedBrowse all base models →

Frequently Asked Questions

Common technical questions about the ZXTR2005Z product family.

ZXTR2005Z is a high-voltage linear regulator transistor from Diodes Incorporated. It provides a fixed 5V output from input voltages up to 100V and integrates a transistor, Zener diode and resistor in a compact SOT89 package.
No. ZXTR2005Z is not a conventional low-dropout regulator. It is a regulator transistor that uses an integrated transistor, Zener diode and resistor structure to provide a simple fixed 5V output in high-voltage, low-current applications.
ZXTR2005Z provides a nominal fixed output voltage of 5V. According to the device specifications, the output voltage tolerance is typically within the 4.5V to 5.5V range under defined test conditions.
ZXTR2005Z supports a maximum input voltage of 100V, making it suitable for high-voltage auxiliary power circuits where ordinary low-voltage regulators cannot be connected directly to the input rail.
ZXTR2005Z is designed for small-current 5V regulation. It is commonly used around 15mA load current and can support up to 30mA depending on input voltage, ambient temperature, PCB thermal design and power dissipation conditions.
ZXTR2005Z is supplied in an SOT89 package. This package offers a compact PCB footprint while providing better thermal performance than many smaller signal-level packages.
ZXTR2005Z is commonly used in DC-DC converter startup circuits, telecom equipment, networking devices, Power-over-Ethernet systems, industrial control boards and high-voltage auxiliary bias supply circuits.
ZXTR2005Z-7 and ZXTR2005Z-13 are packaging options for the same base device. The main difference is reel size and quantity per reel. The electrical function, voltage rating, output voltage and package type remain the same.
It depends on the circuit. ZXTR2005Z can be a better choice when the input voltage is too high for a standard 7805 regulator and the load current is small. However, pinout, package, output current, thermal performance and external circuit requirements must be checked before using it as a replacement.
Possible alternatives may include other high-voltage regulator transistors, high-voltage LDO regulators, discrete Zener-transistor regulator circuits or compact buck converters. The correct alternative depends on input voltage, output current, package, efficiency requirements, thermal limits and PCB layout.