Input/Output (I/O) Modules
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This page explains how Opto-isolator / Relay is classified within Computer, Electronic and Optical Product Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.
An electronic component that provides electrical isolation and signal switching between circuits in I/O modules.
Technical details and manufacturing context for Opto-isolator / Relay
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Isolation Voltage | 3750–5000 Vrms | Minimum for reinforced insulation in I/O modulesIEC 60747-5-5 |
| Input Current | 5–20 mA | Typical forward current for LED activation |
| Output Current | 50–500 mA | Maximum continuous load current |
| Collector-Emitter Voltage | 30–80 V | Maximum voltage across output transistor |
| Current Transfer Ratio | 50–600 % | CTR range for reliable switchingIEC 60747-5-5 |
| Switching Speed | 1–10 µs | Rise/fall time for digital signals |
| Operating Temperature | -40–85 °C | Extended range for industrial environmentsIEC 60068-2-1/2 |
| Storage Temperature | -55–125 °C | Non-operating survival rangeIEC 60068-2-1/2 |
| Humidity | 5–95 % RH | Non-condensingIEC 60068-2-78 |
| Package Type | DIP-4–DIP-8 | Through-hole or surface-mount options |
| Weight | 0.5–2.0 g | Typical for DIP package |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is essential for the following industrial systems and equipment:
| current: | Up to 60mA LED input, 1A max load current |
| voltage: | Up to 5kV isolation voltage, 60V max switching voltage |
| temperature: | -40°C to +85°C (operating), -55°C to +125°C (storage) |
| switching speed: | Typically 0.1ms to 10ms response time |
Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.
Quoted from the published standard.
Manufacturer profiles associated with Opto-isolator / Relay.
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A practical evidence checklist for RFQ preparation and supplier evaluation.
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It provides electrical isolation between the control circuit (e.g., PLC) and the load circuit, while allowing signal transmission or switching. This protects the control system from voltage spikes, ground loops, and noise.
For reinforced insulation in I/O modules, isolation voltage is typically in the range of 3750–5000 Vrms, as referenced in IEC 60747-5-5. Always verify the specific rating for your model.
Opto-isolators use light to transfer signals between isolated circuits, offering faster switching and no mechanical wear. Relays use an electromagnetic coil to move mechanical contacts, suitable for higher current loads but with slower switching and finite mechanical life.
Verify the required isolation voltage, input/output current, switching speed, operating temperature range, and package type. Confirm these parameters with the manufacturer's datasheet and ensure compliance with applicable standards.
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
Ask for use case, specification boundaries, supplier type, and RFQ preparation information for this product.
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