The OPB826S and OPB826SD are dual‑channel slotted optical switches that detect the passage of an opaque object through a 0.100" (2.54 mm) wide slot. Each device contains two infrared emitting diodes and two NPN silicon phototransistors arranged in an over/under configuration, providing direction‑of‑travel sensing and dust‑proof operation.
The bulletin lists absolute maximum ratings, electrical characteristics such as forward voltage (1.70 V at 20 mA), reverse current (100 pA at 2 V), and operating temperature range (‑40 °C to +85 °C). Typical performance curves and lead soldering guidelines are also provided for design and assembly.
| Slot width | 0.100" (2.54 mm) |
|---|---|
| Reverse Current | 100 pA @ VR=2 V |
The slot is 0.100" (2.54 mm) wide.