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RS232 Opto-Isolator

View : 1,051
Type : RS232 Opto-Isolator
Description :

This device is an RS232 opto isolator that employs a passive conversion method through serial port-powered technology.


This device is an RS232 isolator that employs a passive conversion method through serial port port-powered technology. It features an internal interface with electrostatic protection and possesses strong anti-interference characteristics. It uses a 3-wire 3KV isolation technique, which significantly safeguards RS-232 serial interface devices from potential damages caused by ground loop voltages, surges, induced lightning strikes, static electricity, hot-plug, and other harsh conditions. The product is plug-and-play, highly adaptable to various environments, and supports a high rate of up to 256Kbps. It can also amplify and extend serial port signals.


The RS232 baud rate is adaptive from 300 to 256Kbps.

It has an isolation voltage of 3000V, which improves the device’s versatility by serial port power theft technology.

It complies with the EIA RS-232 and CCITT V.28/V.24 asynchronous protocols.

The isolated pins consist of three lines: receive (RX), transmit (TX), and ground (GND, 5P).

Both RS232 interfaces are equipped with TVS protection to suppress electrostatic discharge and surge.

It features DB9 connectors on both sides, with one side using a DB9 male connector and the other using a DB9 female connector.

It supports transparent communication, allowing users to plug and play without the need for any debugging.

Operation from -40°C to +85°C.

The device has passed 100% burn-in testing.


● Serial Interface


EIA/TIA-232 RS-232 (ITU-T V.28/V.24)

Serial Port Interface:

RS-232: Female DB9 to Male DB9

RS-232 Female: TXD (DB9-2), RXD (DB9-3), GND (DB9-5)

RS-232 Male: RXD (DB9-2), TXD (DB9-3), GND (DB9-5)

Internal Loopback: RTS to CTS, DTR to DSR


● Environmental Index

Operating Temperature: -40°C to +85°C

Storage Temperature: -40°C to +85°C

Operating Humidity: 0% to 95% (non-condensing)

MTBF: >100,000 hours


Product Model FC-1003
Function Description RS-232 3KV Isolator
Port Description 1 x DB9 RS232 Male Connector, 1 x DB9 RS232 Female Connector
Power Powered by the serial port, power consumption <1W
Dimensions 62mm (length) x 33mm (width) x 16mm (height)
Weight 0.023kg per unit



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