3750Vrms isolation in a 4-pin SSOP
The VOS615A-4X001T: This isolation rating meets the reinforced insulation requirement for many mains-connected industrial and consumer applications, allowing the part to serve as a safety barrier between a low-voltage control side and a higher-voltage load side.
CTR spread and switching speed — what they mean for the BOM
Switching speed is modest: 3µs rise time, 4µs fall time, and 5µs turn-on/turn-off times. These figures place the part firmly in the realm of discrete I/O isolation, relay drivers, and low-frequency signal coupling — it will not support high-speed communication links or fast PWM loops above roughly 10kHz. The 80V output voltage rating and 50mA output current per channel give headroom for driving small loads or interfacing with 24V industrial logic levels. Operating temperature spans -55°C to 110°C, qualifying it for industrial environments including outdoor telecom cabinets and factory-floor enclosures where ambient temperatures can reach 85°C with internal heating. The 400mV maximum Vce saturation at the rated output current keeps conduction losses low enough that no heatsinking is needed in the 4-SSOP package.
ROHS3 compliance covers the EU RoHS exemption regime without any restricted substances above the threshold limits. The 4-SOIC (4.40mm width) body and 4-SSOP supplier package designator are the same physical footprint — the SSOP variant is simply the thinner-profile version of the same SOIC outline.