MOC256M

Transistor, Photovoltaic Output Optoisolators Overview

The MOC256M is a single-channel transistor output optocoupler manufactured by onsemi. It features an AC input configuration utilizing two infrared emitters connected in anti-parallel, coupled to a silicon NPN phototransistor. The device provides electrical isolation with an insulation voltage of 2500 Vrms. Key electrical parameters include a maximum collector-emitter voltage of 30 V, a maximum collector current of 150 mA, and a minimum current transfer ratio of 20%. It operates within a temperature range of -40°C to +100°C and is available in an SOIC-Narrow-8 package.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• AC input capability enabled by dual anti-parallel infrared emitters
• High isolation voltage for safe signal transmission
• Robust NPN phototransistor output stage

Transistor, Photovoltaic Output Optoisolators Applications

• Solid-state relay interfaces
• Microcontroller input isolation
• Power supply feedback loops

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix (e.g., R2M) against the datasheet to confirm packaging type such as tape and reel or cut tape. Ensure the component meets required RoHS compliance standards for the target assembly process. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm authenticity and traceability before procurement.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when AC drive signals are present at the input side, eliminating the need for external rectification circuits. The high CTR and collector current rating support direct driving of logic inputs or low-power loads. Verify that the operating temperature range and isolation requirements align with the system's safety and environmental specifications.

Transistor, Photovoltaic Output Optoisolators Part Context

The MOC256M belongs to the MOC256M series of optocouplers designed for general-purpose isolation applications. It distinguishes itself from standard DC-input optocouplers by its ability to accept alternating current directly at the LED side. This simplifies circuit design in applications where the control signal source is inherently AC or where bidirectional triggering is beneficial.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Check for pin-compatible alternatives within the same family that may offer different packaging options or updated manufacturing statuses. Ensure any substitute maintains the same AC input characteristic and isolation voltage rating to guarantee functional equivalence in existing designs.