OPI1264A

Overview

The OPI1264A is a single-channel transistor output optocoupler manufactured by TT Electronics/Optek Technology. It features an NPN phototransistor output and supports through-hole axial mounting. The device provides high isolation with a rated voltage of 15000 Vrms. Key electrical parameters include a maximum collector-emitter voltage of 30 V, a maximum collector current of 44 mA, and a minimum current transfer ratio of 25% at a forward current of 10 mA. The forward voltage is typically 1.6 V, with a maximum power dissipation of 100 mW. It operates within a temperature range of -40°C to +85°C.

Feature Summary

• Provides robust electrical isolation between input and output circuits using optical transmission.
• Features an NPN phototransistor output suitable for digital switching applications.
• Designed for through-hole axial lead mounting to facilitate standard PCB integration.

Applications

• General purpose signal isolation in industrial control systems
• Input/output interface isolation for microcontroller circuits
• Switching power supply feedback loop isolation

Procurement Notes

Verify the specific suffix against official datasheets to confirm performance grades, as variations exist within the series. Confirm RoHS compliance status and UL recognition file numbers required for end-product certification. Ensure axial package dimensions match the target footprint. Cross-reference manufacturer part numbers with distributor codes to avoid ordering errors due to naming conventions.

Selection Notes

Select this component when high isolation voltage is critical for safety or noise immunity. The NPN output requires appropriate pull-up configuration. Evaluate the current transfer ratio requirements against the driving capability of the source circuit. Consider thermal management if operating near the maximum power dissipation limit. Verify that the axial package style aligns with assembly constraints.

Part Context

This component belongs to the OPI1264 series of transistor output optocouplers from Optek. The series includes variants with different current transfer ratios, such as the OPI1264 and OPI1264C. These devices are designed for general-purpose isolation tasks requiring reliable performance in harsh environments. The series shares common packaging and basic electrical characteristics while differing in gain specifications.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult manufacturer cross-reference guides for equivalent components with matching isolation ratings and pin configurations.