MOC3021 Optocoupler

MOC3021 Optocoupler is Triac driven a zero-crossing optocoupler. Optocoupler is made of light-emitting and light-sensing devices with no internal connection except light bean. The optoisolators allow two circuits to exchange signals without making any electrical connection. This device works on the principle that light is proportional to signal and the signal is transferred to a phototransistor.

Features of MOC3021 Optocoupler:

• Excellent IFT stability—IR emitting diode has low degradation
• High isolation voltage—minimum 5300 VAC RMS
• Underwriters Laboratory (UL) recognized—File #E90700
• Peak blocking voltage– 250V-MOC301XM – 400V-MOC302XM

APPLICATIONS of MOC3021

• Industrial controls
• Solenoid/valve controls
• Traffic lights
• Static AC power switch
• Vending machines
• Incandescent lamp dimmers
• Solid state relay
• Motor control

Specifications of MOC3021 Optocoupler

• Input-to-output peak voltage, 5 s maximum duration, 60 Hz: 7.5 kV
• Input diode reverse voltage : 3 V
• Input diode forward current, continuous: 50 mA
• Output repetitive peak off-state voltage: 400 V
• Output on-state current, total rms value (50-60 Hz, full sine wave): TA = 25°C: 100 mA
• TA = 70°C : 50 mA
• Output driver nonrepetitive peak on-state current (tw = 10 ms, duty cycle = 10%): 1.2 A
• Continuous power dissipation at (or below) 25°C free-air temperature:
• Infrared-emitting diode: 100 mW
• Phototriac: 300 mW
• Total device: 330 mW
• Operating junction temperature range, : –40°C to 100°C
• Storage temperature range, Tstg: –40°C to 150°C
• Lead temperature 1,6 (1/16 inch) from case for 10 seconds:260°C