This part is a kind of semiconductor called 1N5618.
Function of this product has RECTIFIER.
Manufacturers : SEMTECH
Image and pinout :

Some of the text within the PDF file :
January 7, 1998 RECTIFIER, up to 1kV, 2A, 2µs 1N5614 1N5616 1N5618 1N5620 1N5622 S2M S4M S6M S8M S0M TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com © 1997 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 January 7, 1998 RECTIFIER, up to 1kV, 2A, 2µs 1N5614 1N5616 1N5618 1N5620 1N5622 S2M S4M S6M S8M S0M © 1997 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 January 7, 1998 RECTIFIER, up to 1kV, 2A, 2µs 1N5614 1N5616 1N5618 1N5620 1N5622 S2M S4M S6M S8M S0M © 1997 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320 [ ... ]
1N5618 PDF Datasheet Download
