This part is a kind of semiconductor called 25NTD.

Function of this product has Thyristor-Diode Modules.

Manufacturers : Naina Semiconductor

Image and pinout :

Some of the text within the PDF file :

www.DataSheet.co.kr Naina Semiconductor emiconductor Ltd. Thyristor – Diode Module Features • • • • Improved glass passivation for high reliability Exceptional stability at high temperatures High di/dt and dv/dt capabilities Low thermal resistance 25NTD Maximum Ratings (TA = 250C unless otherwise noted) Parameter Maximum average forward current @ TJ = 0 85 C Maximum average RMS forward current Maximum non-repetitive surge current @ t = 10ms Maximum I t for fusing @ t = 10ms 2 Symbol IF(AV) IF(RMS) IFSM It 2 Values 25 50 450 1150 Units A A A As 2 M1 PACKAGE Thermal & Mechanical Specifications (TA = 250C unless otherwise noted) Parameter Operating junction temperature range Thermal resistance, junction to case Symbol TJ Rth(JC) Values -65 65 to +125 +1 0.9 0 Units 0 C C/ [ ... ]

25NTD PDF Datasheet Download