This part is a kind of semiconductor called BTA100-1200B.
Function of this product has Specially Varieties 4Q-Triacs.
Manufacturers : HAOHAI
Image and pinout :
Some of the text within the PDF file :
100A 绝缘型 高压 四象限双向可控硅【产品参数规格书】 BTA100 Series Specially Varieties 4Q-Triacs 產品特性:NPNPN五層結構的硅雙向器件,具有自主知識產權的單面挖槽技術,檯面玻璃鈍化工藝; 產品特性:背面多層金屬化電極;具有較高有阻斷電壓、較高的溫度穩定性;大電流、絕緣型封裝。 主要用於:加熱控制器、調溫設備、彩燈控制器、固態繼電器、吸塵器、電動工具、馬達調速控制器;其它相控電路。 Part Number BTA100-600B BTA100-800B BTA100-1000B BTA100-1200B BTA100-1400B BTA100-1600B BTA100-1800B* * 未量产 IT(RMS) 100A VRMD / VRRM 600V 800V 1000V 1200V 1400V 1600V 1800V* IGT ≤50mA Package TOP4 ■ PINNING: Insulated Package [ ... ]