OptoHiT Series, High-Temperature Phototransistor Features: Excellent CTR linearity at high temperature; Compact half pitch, mini-flat, 4-pin package (1.27mm lead pitch, 2.4mm maximum standoff height); High isolation voltage regulated by safety agency, UL1577, 3750 VAC RMS for 1 min. and DIN EN/IEC60747-5-2 (pending approval); Utilizing proprietary process technology to achieve high operating temperature up to 125C; CTR at very low input current, IF; Applicable to Infrared Ray reflow, 245C; Guaranteed Current Transfer Ratio (CTR) specifications across full temperature range; > 5mm creepage and clearance distance