DC Input, Half-Pitch Phototransistor Optocoupler

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The ACPL-217-500E is a DC-input single channel half-pitch phototransistor optocoupler which contains a light emitting diode 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 2μs typically, while minimum CTR is 50% at input current of 5 mA.


  • Current transfer ratio
    (CTR: min. 50% 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
Absolute Max. If (mA) 50
BVCEO (V) 80
CTR Max. (%) 300
CTR Min. (%) 50.0
RoHS6 Compliant Pb-free options only
Package SO4
UL Insulation Rating Viso (VRMS) 3000.0
VCE(SAT) max (V) 0.4
Vf max (V) 1.4

Application Note2 i
Brochures3 i
Data Sheet2 i
Options Data Sheet3 i
Regulatory Certificate3 i
Reliability Data Sheet26 i
Selection Guide2 i
White Papers2 i
Obsolescence Notice2 i
FAQs1 i
Technical Notes4 i
Product Brief2 i
Promotional Material2 i
Photocard1 i
User Guide1 i


DC-Input Lead Free General Purpose Phototransistor Optocoupler


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AC Input, Half-Pitch Phototransistor Optocoupler