The H21L Series OPTOLOGIC® optical interrupter switch is a slotted optical sensor designed for multipurpose non‑contact sensing. It combines a GaAs LED with a silicon sensor in an injection‑molded housing, offering low‑cost 0.035" apertures, black opaque housing, and selectable inverter or buffer output functions with either totem‑pole or open‑collector configurations compatible with TTL/CMOS levels.
The datasheet details the electrical specifications such as a supply voltage range of 4.0 V to 16 V, output current up to 50 mA, forward voltage of 1.5 V, reverse voltage of 6 V, and power dissipation limits of 100 mW (input) and 150 mW (output). It also includes package dimensions, absolute maximum ratings, typical performance curves, and circuit schematics for both buffer and inverter configurations.
| Aperture Size | 0.035" |
|---|---|
| Supply Voltage (VCC) | 4.0 to 16 V |
| Output Current (IO) | 50 mA |
| Reverse Voltage (VR) | 6 V |
The device operates with a supply voltage (VCC) from 4.0 V to 16 V.
The switch offers inverting or non‑inverting output with a choice of totem‑pole or open‑collector configurations.
The output current is specified up to 50 mA.
The optical aperture is 0.035 inches.