Tsum1pfrlf Datasheet Verified -

| Parameter | Typical Value | |-----------|----------------| | Isolation Voltage | 3750 Vrms / 5000 Vrms | | Current Transfer Ratio (CTR) | 50–600% (depending on sub-grade) | | Input Forward Current | 50 mA max | | Collector-Emitter Voltage | 70 V max | | Rise/Fall Time | 4–18 µs | | Package | SOP-4 (small outline 4-pin) | | Operating Temp | –55°C to +110°C |

Note: Always verify with original manufacturer datasheets. The exact spacing and capitalization can vary between distributors. tsum1pfrlf datasheet verified

Download the official datasheet’s package drawing. Measure your physical component (with calipers) and verify: Note: Always verify with original manufacturer datasheets

The global electronics supply chain is plagued by counterfeit or remarked optocouplers. A cheaper part may be relabeled as TSUM1PFR-LF. Without verification, you might design for a 5000 Vrms isolation rating but receive a part with only 1500 Vrms — a safety hazard. Download the official datasheet’s package drawing