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The ZXTR2008Z monolithically integrates a transistor, Zener diode and resistor to function as a high voltage linear regulator. The device regulates with an 8.2V nominal output and delivers up to 30mA. It is designed for use in high voltage applications where standard linear regulators cannot be used. This function is fully integrated into a single SOT89 package, minimizing PCB area and reducing number of components when compared with a multi-chip discrete solution.


Supply voltage regulation for the primary side controller in:

  • Networking
  • Telecom
  • Power Over Ethernet (PoE)

Product Specifications

Product Parameters

AEC Qualified Yes
Compliance (Only Automotive supports PPAP) Standard
Dropout Voltage Typical (V) 4 V
Operating Input Voltage (V) 100 V
Output Current (A) 0.03 A
Output Voltage (V) 8 V
PSRR Typ @ 120hz (dB) 38 dB
Quiescent Current Typ (mA) 0.27 mA
Operating Ambient Temperature Range (Junction Temperature) (°C) -40 to 125 °C

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Evaluation Boards and User Guides

Recommended Soldering Techniques


Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2313 2019-10-21 2020-01-21 Qualification of "Diodes Technology (Cheng Du) Company Limited" (CAT) as an Additional Assembly & Test Site, Conversion
to Copper Bond Wire, and Qualification of Additional Die Passivation Layer on Select Products
PCN-2344 INFORMATIONAL 2018-05-24 2018-06-24 Carrier tape orientation