AC Input, Half-Pitch Phototransistor Optocoupler

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The ACPL-214 photocoupler is an AC-input single channel half-pitch phototransistor optocoupler which contains 2 light emitting diodes connected inversely parallel and optically coupled to a phototransistor. It is packaged in a 4-pin SO package.

The input-output isolation voltage is rated at 3000 Vrms. Response time, tr, is 2 µs typically, while minimum CTR is 20% at input current of 5 mA.


  • Current transfer ratio
    (CTR: min. 20% at IF = ±5mA, VCC = 5V)
  • High input-output isolation voltage
    (VISO = 3,000VRMS)
  • Non-saturated Response time
    (tr: typ. 2μs at VCC = 10V, IC = 2mA, RL= 100Ω)
  • SO package
  • CMR 10 kV/μs (typical)
  • Safety and regulatory approvals
    UL 1577
    IEC/EN/DIN EN 60747-5-2
  • Options available are:
    5XXE = Lead Free Option


  • I/O Interface for Programmable controllers, computers
  • Sequence controllers
  • System appliances, measuring instruments
  • Signal transmission between circuits of different potentials and impedances

Lifecycle Status


Substance Compliance

  • RoHS
    Pb-free options
Specification Value
Lifecycle Active
Distrib. Inventory Yes
BVCEO (V) 70
CTR Max. (%) 80
CTR Min. (%) 50.0
RoHS6 Compliant Pb-free options only
Package SO4
UL Insulation Rating Viso (VRMS) 3000.0
Vf max (V) 1.3
Application Note2 i
Brochures1 i
Data Sheet1 i
Options Data Sheet3 i
Regulatory Certificate1 i
Selection Guide2 i
White Papers1 i
FAQs1 i
Promotional Material1 i


DC-Input Lead Free General Purpose Phototransistor Optocoupler


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DC Input, Half-Pitch Phototransistor Optocoupler