This part is a kind of semiconductor called 1.5KE180A.
Function of this product has (1.5KE Series) Transient Voltage Suppressors.
Manufacturers : Vishay
Image and pinout :

Some of the text within the PDF file :
1.5KE Series and 1N6267 thru 1N6303A Vishay Semiconductors formerly General Semiconductor TRANSZORB® Transient Voltage Suppressors Case Style 1.5KE d e d n ange e t Ex e R Features g a t Vol V(BR) Unidirectional 6.8 to 540V V(BR) Bidirectional 6.8 to 440V Peak Pulse Power 1500W 1.0 (25.4) MIN. 0.210 (5.3) 0.190 (4.8) DIA. • Underwriters Laboratory Recognition under UL standard for safety 497B: Isolated Loop Circuit Protection • Glass passivated junction • 1500W peak pulse power capabililty on 10/1000µs waveform, repetition rate (duty cycle): 0.05% • Excellent clamping capability • Low incremental surge resistance • Very fast response time • Includes 1N6267 thru 1N6303A 0.375 (9.5) 0.285 (7.2) Mechanical Data Case: Molded plastic body over passivated junction Termina [ ... ]
1.5KE180A PDF Datasheet Download
