MOC3021S-TA

Description：OPTOISOLATOR 5KV TRIAC 1CH 6-SMD
Series：MOC302x
Mfr：Lite-On Inc.
Package：Tape & Reel (TR)

SKU:959b82fb3dd4 Category: Triac, SCR Output Optoisolators Brand: Lite-On Inc.

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Product introduction

MOC3021S-TA is listed in the Triac, SCR Output Optoisolators range at ChipApex. The manufacturer field lists Lite-On Inc.. Its product description is OPTOISOLATOR 5KV TRIAC 1CH 6-SMD. Review the specifications below when checking this part for your BOM.

Triac, SCR Output Optoisolators specifications for MOC3021S-TA

Description：OPTOISOLATOR 5KV TRIAC 1CH 6-SMD
Series：MOC302x
Mfr：Lite-On Inc.
Package：Tape & Reel (TR)
Output Type：Triac
Zero Crossing Circuit：No
Number of Channels：1
Voltage - Isolation：5000Vrms
Voltage - Off State：400 V
Static dV/dt (Min)：1kV/µs
Current - LED Trigger (Ift) (Max)：15mA
Current - On State (It (RMS)) (Max)：-
Current - Hold (Ih)：250µA (Typ)
Turn On Time：-
Voltage - Forward (Vf) (Typ)：1.15V
Current - DC Forward (If) (Max)：50 mA
Operating Temperature：-40°C ~ 100°C
Mounting Type：Surface Mount
Package / Case：6-SMD, Gull Wing
Supplier Device Package：6-SMD
Approval Agency：CQC, CSA, TUV, UL, VDE

Triac, SCR Output Optoisolators datasheet and documents for MOC3021S-TA

MOC3021S-TA

Triac, SCR Output Optoisolators Overview

The MOC3021S-TA is a single-channel triac output optocoupler manufactured by Lite-On Inc. It features an SMD-6 gull wing package and lacks a zero-crossing circuit. Key electrical parameters include a 5000 Vrms isolation voltage, 400 V off-state output voltage (Vdrm), and a maximum forward current of 50 mA. The device operates within a temperature range of -40°C to +100°C, with a power dissipation rating of 330 mW and a forward voltage of 1.15 V.

Triac, SCR Output Optoisolators Feature Summary

Provides galvanic isolation between input and output circuits via optical transmission
Designed for direct driving of triac-based AC load switching applications
Non-zero-crossing architecture allows for phase-angle control functionality

Triac, SCR Output Optoisolators Applications

Solid state relay modules
AC motor speed control circuits
Light dimmer switch implementations

Triac, SCR Output Optoisolators Procurement Notes

Verify the specific suffix against official Lite-On documentation to confirm package type and tape/reel specifications. Ensure that the selected variant matches the required isolation voltage ratings and thermal performance characteristics for the target application environment. Cross-reference manufacturer datasheets for precise mechanical dimensions and soldering profile recommendations.

Triac, SCR Output Optoisolators Selection Notes

Select this component when non-zero-crossing triac drive capability is required in a surface-mount configuration. Consider the 400 V off-state voltage limit for low-voltage AC loads. Evaluate thermal management requirements given the 330 mW power dissipation constraint in compact PCB layouts.

Triac, SCR Output Optoisolators Part Context

This part belongs to the MOC302x series of triac driver optocouplers from Lite-On. It shares functional similarities with through-hole variants like the MOC3021 but utilizes a surface-mount footprint. The series is commonly used in industrial control systems requiring reliable AC switching with electrical isolation.