• High Current Transfer Ratio ( 80% min)
• High Isolation Voltage (5.3kVRMS ,7.5kVPK )
• High BVCEO ( 80Vmin )
• All electrical parameters 100% tested
• Custom electrical selections available

• Wide Operating Voltage
• Minimal External Components
• No External Filter Required
• Low Standby Current
• Excellent Performance
• 18pin DIP IC
• Operating voltage: 2.5V~5.5V

• Supply voltage: 7V to 36V
• Output current: Up to 5A
• Switching frequency: 100kHz to 1MHz
• Efficiency: Up to 95%
• Protection features: Short-circuit protection, over-current protection, over-voltage protection
• Operating temperature range: -40°C to 125°C

• Product Name: LA7840
• supply voltage: 34V
• Output block supply voltage:70V
• Deflection output current: –1.5 ~ +1.5 Ap-o
• Thermal resistance: 4 °C/W
• Allowable power dissipation: 9 Watt
• Low power dissipation due to built-in pump-up circuit

• • Interfaces with common logic families 

• • Input-output coupling capacitance < 0.5 pF 

• • Industry Standard Dual-in line 6-pin package 

• • 5300 VRMS isolation test voltage 

• MCT2E Optocoupler Phototransistor IC DIP-6 Package

• Excellent Carrier Suppression: −65 dB typ @ 0.5 MHz, −50 dB typ @ 10 MHz
• Adjustable Gain and Signal Handling
• Balanced Inputs and Outputs
• High Common Mode Rejection −85 dB Typical
• This Device Contains 8 Active Transistors
• Pb−Free Package is Available

• Simplifies Logic Control of 115 Vac Power 

• Zero Voltage Crossing 

• dv/dt of 2000 V/µs Typical, 1000 V/µs Guara 

• Type: Phototriac output optocoupler
• Input voltage: 4.5 V to 20 V
• Output voltage: Load voltage up to 400 V
• Output current: 1 A continuous, 2 A peak
• Isolation voltage: 2500 V RMS
• Current transfer ratio (CTR): 40% to 600%
• Switching speed: 10 μs (turn-on time), 20 μs (turn-off time)

• 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: 400V-MOC3021 

• 4pin DIP package 

• Double transfer mold package (Ideal for Flow Soldering) 

• High collector-emitter voltage (VCEO:80V(*)) 

• Current transfer ratio (CTR : MIN. 50% at IF=5 mA, VCE=5V) 

• Several CTR ranks available 

• High isolation voltage between input and output (Viso(rms) : 5.0 kV)

• Isolation Test Voltage 5300 VRMS 

• Interfaces with common logic families 

• Input-output coupling capacitance < 0.5 pF 

• Industry Standard Dual-in line 6-pin package

• Isolation test voltage 5000 VRMS
• Interfaces with common logic families
• Input-output coupling capacitance < 0.5 pF
• Industry standard dual-in-line 6 pin package
• Compliant to RoHS directive 2002/95/EC and in accordance to WEEE 2002/96/EC