This part is a kind of semiconductor called 1N823A.
Function of this product has Temperature Compensated Zener Diodes.
Manufacturers : GOOD-ARK
Image and pinout :

Some of the text within the PDF file :
1N821 thru 1N829A Temperature Compensated Zener Diodes Features ■ Temperature compensated zener diodes ■ Metallurgically bonded ■ Double plug construction Maximum Ratings (TA = 25°C unless otherwise noted) Parameter Operating Temperature Storage Temperature DC Power Dissipation Power Derating Symbol TJ TSTG PTOT Conditions Ratings TA = 50°C TA > 50°C -65 to +175 -65 to +175 500 4.0 Package: DO-35 Unit °C °C mW mW/°C Electrical Characteristics (TA=25°C unless otherwise noted) MPN Zener Voltage VZ@ IZT Zener Test Current IZT Maximum Zener Impedance (Note 1) ZZT Voltage Temperature Stability ∆VZT -55°C to +100°C (Note 2) 1N821 1N821A 1N822 † 1N823 1N823A 1N824 † 1N825 1N825A 1N826 1N827 1N827A 1N828 1N829 1N829A V 5.96.5 5.96.5 5.96.5 5.96.5 5.9 [ ... ]
1N823A PDF Datasheet Download
