onsemi has marked the H11A2VM as Obsolete.
7500Vpk isolation — the headline spec for this class
The H11A2VM provides 7500Vpk isolation between input and output. In a 6-DIP through-hole package, this part is a single-channel phototransistor optoisolator with a DC input. The 7500Vpk rating means it can withstand high transient voltages common in industrial motor drives, power supplies, and medical equipment where galvanic isolation is required for safety and noise immunity. Minimum current transfer ratio is 20% at 10mA forward current. This sets the minimum output current relative to the input drive — at 10mA in, you get at least 2mA out, which is enough to saturate the phototransistor for logic-level switching in most control circuits. Typical turn-on and turn-off times are 2µs each. For a 10kHz switching application, the 2µs delay represents 2% of the period — acceptable for most isolation and level-shifting tasks but a factor to budget in timing-critical loops.
Temperature range and output ratings
Operating temperature spans -40°C to 100°C, covering industrial and most commercial environments. Maximum output voltage is 30V, and Vce saturation is 400mV max — the voltage drop across the output transistor when fully on, which matters for power dissipation in low-voltage logic rails. Forward voltage is 1.18V typical, and the maximum DC forward current is 60mA.