DPC1012S-TR

Overview

The DPC1012S-TR is a single-channel transistor output optocoupler manufactured by Diodes Incorporated. It features an LSOP-4 surface-mount package with a 5000 Vrms isolation voltage. The device utilizes a phototransistor output capable of handling a maximum collector-emitter voltage of 80 V and a collector current of 30 mA. Key electrical parameters include a forward current of 10 mA, a forward voltage of 1.25 V, and a collector-emitter saturation voltage of 200 mV. The current transfer ratio ranges from 63% to 125%, with rise and fall times of 18 µs each. It operates within a temperature range of -55°C to +110°C and has a power dissipation rating of 250 mW.

Feature Summary

• Provides high-voltage electrical isolation between input and output circuits via optical coupling.
• Integrates a GaAs infrared LED emitter with an NPN silicon phototransistor detector for signal transmission.
• Designed for surface-mount assembly in compact LSOP-4 packages to facilitate automated PCB manufacturing.

Applications

• Signal isolation in industrial control systems
• Power supply feedback loops
• Microcontroller interface circuits requiring galvanic separation

Procurement Notes

Verify the specific suffix and packaging configuration against the manufacturer's latest datasheet before ordering. Confirm that the LSOP-4 footprint matches the target PCB design. Ensure compliance with RoHS directives if required by the end application. Check for any product change notifications or lifecycle status updates directly from Diodes Incorporated to avoid obsolescence risks during production.

Selection Notes

Select this component when a low-cost, general-purpose optocoupler with moderate speed and high isolation voltage is required. The 80 V collector-emitter voltage rating suits low-voltage digital logic interfacing. Consider the 18 µs switching speed limitations for high-frequency applications where faster alternatives may be necessary. Evaluate the CTR range to ensure adequate noise margin in the receiving circuit design.

Part Context

This part belongs to the DPC series of transistor output optocouplers from Diodes Incorporated. The series offers various isolation voltages and package options to meet different safety and space constraints. The DPC1012S-TR specifically targets cost-sensitive applications requiring reliable signal transmission across isolated boundaries in consumer and industrial electronics.

Replacement Considerations

Consult official substitution guides for equivalent parts with matching pinouts and electrical characteristics. Verify compatibility of replacement components regarding isolation voltage ratings and package dimensions to ensure seamless integration without redesigning the host circuit board.