5300Vrms isolation — the safety margin that defines the application
The SFH6750-X007T is a dual-channel open-drain optocoupler from Vishay, built for galvanic isolation in industrial communication links. Its 5300Vrms isolation rating covers reinforced insulation requirements in motor drives, PLC I/O modules, and isolated sensor interfaces where a fault on the field side must not propagate to the controller side. The two channels share a common input side (2/0 input-to-output configuration), so both outputs switch together from the same DC input — useful for redundant enable signals or driving two isolated loads from one logic source.
10MBd data rate and 100ns propagation delay — timing budget for the bus
At 10MBd with a 100ns max propagation delay (tpLH/tpHL), this part keeps skew tight enough for isolated SPI or RS-485 data lines running at moderate clock rates. The 23ns rise and 7ns fall times (typical) mean the open-drain output transitions cleanly into a pull-up resistor — no extra schmitt-trigger buffering needed on the receiving side. If your bus runs faster than 10MBd or requires tighter than 100ns propagation symmetry, you need a higher-speed isolator; for most industrial fieldbus and digital I/O applications this is well within margin.
Each open-drain output sinks up to 50mA — enough to drive an opto-coupled relay coil, a small LED indicator, or a logic input directly. The input LED forward voltage is 1.4V typical, with a 15mA absolute maximum forward current; a series resistor sized for 5V logic levels keeps the LED within its safe region. Common-mode transient immunity is rated at 100V/µs minimum, so the outputs won't glitch during fast voltage swings on the isolation barrier — a common failure mode in motor-drive environments.
Package and temperature grade — surface-mount, industrial range
Housed in an 8-SMD gull-wing package, the SFH6750-X007T suits automated pick-and-place assembly. The gull-wing leads provide good solder-joint inspection access and moderate thermal relief to the board.