TT Electronics OHB900 Hallogic Hall-Effect Sensors
TT Electronics / Optek OHB900 Hallogic Hall-Effect Sensors detect the presence or movement of ferrous materials without physical contact, enabling switching in automated and safety related systems. The OHB900 combines a hall-effect sensor and rare earth magnet in a plastic housing, with an open collector output that responds to magnetic flux changes when the slot opens or is blocked. These sensors offer a supply voltage from 4.5V to 25V and support sink currents up to 25mA. OHB900 sensors operate within a temperature range from -40°C to +150°C. Applications include assembly line automation, door sensing, end of travel detection, and machine automation.
Features
- 0.125" (3.18mm) wide slot gap
- Combines the hall element, voltage regulator, linear amplifier, and schmitt trigger on one chip
- Good temperature stability
- Non-contact sensing
- Provides stable performance across a wide temperature range
Applications
- Assembly line automation
- Door sensors
- End of travel sensors
- Harsh environment encoders
- Machine automation
- Machine safety
- Non-contact slotted magnetic switches
Technical Specifications
| Parameters | Values |
|---|---|
| Maximum Output OFF Voltage | 25V |
| Maximum Supply Current | 7mA |
| Operating Temperature Range | -40°C to +150°C |
| Typical Output Rise Time | 0.21µs |
| Supply Voltage Range | 4.5V to 25V |
| Switching Frequency Range | DC to over 200kHz |
| Typical Output Leakage Current | 0.1µA |
