This part is a kind of semiconductor called HZ24-1.

Function of this product has Silicon Epitaxial Planar Zener Diode.

Manufacturers : Renesas

Image and pinout :

Some of the text within the PDF file :

HZ Series Silicon Epitaxial Planar Zener Diode for Stabilized Power Supply REJ03G0180-0300Z (Previous: ADE-208-117B) Rev.3.00 Mar.11.2004 Features • Low leakage, low zener impedance and maximum power dissipation of 500 mW are ideally suited for stabilized power supply, etc. • Wide spectrum from 1.6 V through 38 V of zener voltage provide flexible application. Ordering Information Type No. HZ Series Mark Type No. Package Code DO-35 Pin Arrangement 7 B2 1 2 Type No. Cathode band 1. Cathode 2. Anode Rev.3.00, Mar.11.2004, page 1 of 6 HZ Series Absolute Maximum Ratings Item Power dissipation Junction temperature Storage temperature Symbol Pd Tj Tstg Value 500 175 −55 to +175 (Ta = 25°C) Unit mW °C °C Electrical Characteristics Zener Voltage Type HZ2 HZ3 HZ4 HZ5 Note: [ ... ]

HZ24-1 PDF Datasheet Download