5 kVrms isolation in an 8-DIP through-hole package
The FOD2741ATV: That isolation rating means it can serve as a reinforced safety barrier in mains-referenced circuits — think power-supply feedback loops, motor-drive interface signals, or PLC digital inputs where the field side and controller side must not share a ground path. The 8-DIP (0.400", 10.16mm) through-hole package, supplied in bulk, is a standard wave-solder footprint. The 8-MDIP variant (supplier device package) has the same pinout and board layout — no footprint change needed between the two. Check the MSL before the reflow profile is set; at this package size and lead count, tombstoning risk is low if the pad geometry matches the datasheet recommendation.
CTR range and output drive — what the numbers mean for the BOM
This means at 10 mA LED drive, the output transistor can sink between 10 mA and 20 mA — the wide binning gives the designer margin for LED aging and temperature drift without needing to select a tighter CTR grade. The 400 mV Vce saturation ceiling at that drive level keeps the output drop low enough to drive a 5 V logic input directly. Output is rated for 30 V max and 50 mA continuous per channel. That 30 V ceiling covers 24 V industrial logic rails with headroom; the 50 mA limit means it can drive a small relay coil or a PLC input module without a buffer transistor, but a larger load needs an external driver.
Active lifecycle and compliance posture
ROHS3 compliant (no exemptions expiring), which simplifies EU and UKCA market entry. The DC input type and transistor output are standard for general-purpose isolation; no special supply-chain constraints beyond the usual lead-time confirmation at quote.