FAIRCHILD SEMICONDUCTOR MOC3031M, MOC3032M, MOC3033M, MOC3041M, MOC3042M, MOC3043M Specifications Manual
Summary
These 6-Pin DIP Zero-Cross Optoisolators function as reliable triac drivers, enabling safe logic control of high-power 115 VAC systems. Featuring a built-in zero voltage crossing detector, they isolate low-voltage logic sources from line voltage equipment. The technical manual provides comprehensive documentation, including absolute maximum ratings, precise electrical characteristics for trigger timing (MT), and detailed zero-crossing parameters needed for integration. Ideal for engineers designing controls in industrial settings, machinery, lighting systems, AC motor drives, solenoids, and solid-state relay applications.
Page 1 Text Content
OC3031M , M OC3032M , M OC3033M , M OC3041M , M OC3042M , M OC3043M 6-Pin DIP Zero-Cross Optoisolators Triac Driver Output (250/400 Volt Peak)
June 2005
MOC3031M, MOC3032M, MOC3033M, MOC3041M, MOC3042M, MOC3043M 6-Pin DIP Zero-Cross Optoisolators Triac Driver Output (250/400 Volt Peak) Features Description Simplifies logic control of 115 VAC power The MOC303XM and MOC304XM devices consist of a Al Ga As
infrared emitting diode optically coupled to a monolithic silicon
Zero voltage crossing
detector performing the function of a zero voltage crossing bilat-
dv/dt of 2000 V/µs typical, 1000 V/µs guaranteed
eral triac driver.
VDE recognized (File # 94766), ordering option V
(e.g., MOC3043VM) They are designed for use with a triac in the interface of logic systems to equipment powered from 115 VAC lines, such as Applications teletypewriters, CRTs, solid-state relays, industrial controls, printers, motors, solenoids and consumer appliances, etc.
Solenoid/valve controls Lighting controls Static power switches AC motor drives Temperature controls E.M. contactors AC motor starters Solid state relays
Schematic
ANODE MAIN TERM.
CATHODE NC*
N/C CROSSING MAIN TERM.
CIRCUIT
*DO NOT CONNECT (TRIAC SUBSTRATE)
©2005 Fairchild Semiconductor Corporation www.fairchildsemi.com MOC3031M, MOC3032M, MOC3033M, MOC3041M, MOC3042M, MOC3043M Rev. 1.0.1
Page Summary Contents For FAIRCHILD SEMICONDUCTOR MOC3031M, MOC3032M, MOC3033M, MOC3041M, MOC3042M, MOC3043M Specifications Manual
Manual Details
| Brand | Fairchild |
|---|---|
| Pages | 11 |
| File Size | 520.38 KB |
| Published | June 20, 2026 |
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Frequently Asked Questions
What are these optoisolators designed to control?
They simplify logic control of 115 VAC lines, suitable for equipment like CRTs, solid-state relays, and lighting controls.
What is the recommended operating current range?
The optimal operating current lies between the specified max I (e.g., 15 mA for MOC3031M) and the absolute max I (60 mA).
How resistant are these devices to electrical surges?
The isolation surge voltage rating is 7500 Vac(pk), and they have a guaranteed dv/dt of 1000 V/µs.