TLP121(GB,F)

Overview

The TLP121(GB,F) is a single-channel transistor output optocoupler manufactured by Toshiba Semiconductor and Storage. It integrates a gallium arsenide infrared emitting diode with a phototransistor in a compact DIP-4 plastic package. The device provides an isolation voltage of 3750 Vrms and supports a collector-emitter breakdown voltage of at least 80V. It features a minimum current transfer ratio of 50% for the standard rank, or 100% for the GB rank. The component operates within a temperature range of -25°C to 85°C.

Feature Summary

• Integrates a GaAs infrared LED with a phototransistor for signal transmission
• Provides high electrical isolation between input and output circuits
• Designed for surface mount assembly in small outline packages

Applications

• Office machines
• Programmable controllers
• AC/DC input modules
• Telecommunication equipment

Procurement Notes

Verify the specific suffix (GB,F) against official Toshiba documentation to confirm the exact Current Transfer Ratio rank and lead composition. Ensure compliance with relevant safety standards such as UL recognition before integration into final designs.

Selection Notes

Select this component when a low-profile surface mount solution is required for digital signal isolation. Consider the specific CTR rank requirements and thermal operating limits during circuit design to ensure reliable performance under load conditions.

Part Context

This part belongs to the TLP121 family of mini flat couplers designed for space-constrained applications. It serves as a cost-effective isolation solution for general-purpose digital interfaces where moderate speed and high isolation are necessary.

Replacement Considerations

Consult official Toshiba substitution guides for verified equivalents. Generic replacements may differ in isolation voltage or pin configuration.