This part is a kind of semiconductor called HJR-21FF.

Function of this product has Relay.

Manufacturers : NINGBO TIANBO

Image and pinout :

Some of the text within the PDF file :

www.DataSheet.co.kr NINGBO TIANBO GANGLIAN ELECTRONICS CO., LTD HJR-21FF SPECIFICATION FILE NUMBER：T810S-P002A DATE：2004/06/25 ■ CONTACT DATA Contact Contact Contact Form Material Ratings 1A/1C Silver Alloy 1A:12A 240VAC 15A 125VAC 15A 120VAC/24VDC 250VAC/30VDC 15A 2770VA/240W 100mΩMax 100,000 10,000,000 at 6VDC 1A Operations(at30Operations/minute) Operations 1C:10A 240VAC/12A 120VAC/240VDC 15A 125VAC Max Switching Voltage Max Switching Current Max Switching Power Contact Resistance Life Expectancy Electrical Mechanical ■ GENERAL DATA Insulation Resistance Dielectric Strength Between Open Contacts Between Contacts and coil Operate Time Release Time Temperature Range Shock Resistance Vibration Resistance Humidity Weight Safety Standard Operating Extremes Damage Limits 100MΩM [ ... ]

HJR-21FF PDF Datasheet Download