Input Module
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This page explains how Optocoupler/Isolator 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 transfers electrical signals between two isolated circuits using light, providing electrical isolation and noise immunity.
Technical details and manufacturing context for Optocoupler/Isolator
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Isolation Voltage | 3750–5000 Vrms | Minimum for reinforced insulation in mains applicationsIEC 60747-5-5 |
| Current Transfer Ratio (CTR) | 50–600 % | Lower CTR may cause saturation in high-speed circuitsIEC 60747-5-5 |
| Propagation Delay | 0.1–10 µs | Critical for high-speed digital isolation |
| Bandwidth | 1–50 MHz | Higher bandwidth for fast signal transmission |
| Input Forward Voltage | 1.2–1.5 V | Typical for GaAs LED |
| Output Collector-Emitter Voltage | 30–80 V | Maximum voltage across output transistor |
| Operating Temperature Range | -40–85 °C | Extended range for automotive/industrialIEC 60747-5-5 |
| Creepage Distance | 4–8 mm | Required for pollution degree 2, overvoltage category IIIEC 60664-1 |
| Clearance Distance | 4–8 mm | Minimum for basic insulation at 250VrmsIEC 60664-1 |
| Package Type | DIP-4–DIP-8 | SMD variants available for automated assembly |
| Power Dissipation | 100–500 mW | Total for input and output |
| Isolation Resistance | 10^10–10^12 Ω | Measured at 500V DCIEC 60747-5-5 |
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:
| speed: | Up to 100Mbps data rate (varies by technology type) |
| voltage: | Up to 10kV isolation voltage (depends on package and rating) |
| temperature: | -40°C to +125°C (operating range, varies by model) |
| current transfer ratio: | 20% to 600% (depends on LED-photodetector pairing) |
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 Optocoupler/Isolator.
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A practical evidence checklist for RFQ preparation and supplier evaluation.
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It safely transmits signals from external field devices to internal logic circuits while providing electrical isolation, protecting the control system from high voltages, noise, and ground loops.
Consider required isolation voltage, signal speed (propagation delay, bandwidth), current transfer ratio, operating temperature, and package type. Verify these parameters with the manufacturer for your specific model.
Isolation voltage is the maximum voltage that can be applied between input and output without breakdown. It ensures safety and prevents damage from voltage spikes. For reinforced insulation, values range from 3750 to 5000 Vrms per IEC 60747-5-5.
Yes, but you must check propagation delay and bandwidth. Typical values are 0.1–10 µs and 1–50 MHz, respectively. For faster signals, choose a device with lower delay and higher bandwidth.
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
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