This part is a kind of semiconductor called 1.5KE100CA.

Function of this product has TRANSILTM.

Manufacturers : STMicroelectronics

Image and pinout :

Some of the text within the PDF file :

® 1.5KE6V8A/440A 1.5KE6V8CA/440CA TRANSILTM FEATURES PEAK PULSE POWER : 1500 W (10/1000µs) BREAKDOWN VOLTAGE RANGE : From 6.8V to 440 V UNI AND BIDIRECTIONAL TYPES LOW CLAMPING FACTOR FAST RESPONSE TIME UL RECOGNIZED DESCRIPTION Transil diodes provide high overvoltage protection by clamping action. Their instantaneousresponse to transient overvoltages makes them particularly suited to protect voltage sensitive devices such as MOS Technology and low voltage supplied IC’s. CB429 ABSOLUTE MAXIMUM RATINGS (Tamb = 25°C) Symbol PPP P IFSM Tstg Tj TL Parameter Peak pulse power dissipation (see note 1) Power dissipation on infinite heatsink Non repetitive surge peak forward current for unidirectional types Storage temperature range Maximum junction temperature Maximum lead temperature for [ ... ]

1.5KE100CA PDF Datasheet Download