TLP121(TPR,F)

Overview

The TLP121(TPR,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 electrical isolation between input and output circuits, featuring a minimum collector-emitter breakdown voltage of 80 V and a minimum isolation voltage of 3750 Vrms. It supports an operating temperature range from -25 °C to 85 °C and includes UL recognition under file number E67349.

Feature Summary

• Integrates a GaAs infrared LED with a phototransistor for signal transmission
• Provides high-voltage electrical isolation between input and output sides
• 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 (TPR,F) against official Toshiba documentation to confirm lead-free status and packaging configuration. Ensure compliance with current RoHS directives and check for any end-of-life notices or alternative recommendations from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when a low-cost, general-purpose transistor output optocoupler is required for digital signal isolation. Consider the 80 V collector-emitter voltage rating and 3750 Vrms isolation capability for applications requiring moderate voltage separation. Verify that the DIP-4 package dimensions fit the target PCB layout constraints.

Part Context

This part belongs to the TLP121 family of mini flat couplers designed for surface mount technology. These devices are engineered to replace through-hole components in space-constrained designs while maintaining reliable optical coupling performance for industrial and consumer electronic applications.

Replacement Considerations

TLP121(GR-TPR) is listed as a similar replacement option within the same product family.