TLP321XG

Transistor, Photovoltaic Output Optoisolators Overview

The TLP321XG is a single-channel transistor output optocoupler manufactured by Isocom Components. It features a gallium arsenide infrared LED coupled to an NPN silicon phototransistor in a 4-pin DIP package. The device provides electrical isolation with a rated insulation voltage of 5300Vrms. Key electrical parameters include a maximum forward voltage of 1.3V, a collector-emitter breakdown voltage (BVceo) of 30V, and a collector current rating of 50mA. The typical current transfer ratio ranges from 50% to 600% at a forward current of 5mA and Vce of 5V.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• High isolation voltage capability for safe circuit separation
• Standard NPN phototransistor output configuration
• Compatible with standard DIP packaging for through-hole mounting

Transistor, Photovoltaic Output Optoisolators Applications

• General purpose signal isolation
• Interface between logic circuits and power stages
• Switching applications requiring galvanic isolation

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix 'XG' against the manufacturer's latest datasheet to confirm pinout and mechanical dimensions. Ensure the required current transfer ratio falls within the specified range for the target application. Check for RoHS compliance status if environmental regulations apply. Confirm that the 5300Vrms isolation rating meets the safety requirements of the end equipment.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a single channel of isolation is sufficient for the design. Consider the 50mA collector current limit for load driving capabilities. Evaluate the CTR variation across temperature ranges to ensure stable switching performance. Compare against alternative series like TLP785 if higher speed or different output types are needed.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the TLP321 series, which includes multi-channel variants such as TLP321-2 and TLP321-4. The series is designed for general-purpose isolation tasks. Isocom Components positions these devices as replacements for obsolete optical couplers. The TLP321XG specifically denotes the single-channel version within this family.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

TLP785F is listed as a comparable specification alternative.