Miniature Phototransistor Optocoupler for Hybrid Assembly

The OLI100 is designed especially for hybrid applications that require optical isolation with a high current transfer ratio and low saturation VCE. The device consists of a light emitting diode, and an N-P-N silicon phototransistor mounted and coupled in a miniature custom ceramic package.

The very low input current makes the OLI100 well suited for direct CMOS to Low Power Schottky Transistor to Transistor Logic (LSTTL/TTL) interfaces.

The OLI100 is mounted by standard hybrid assembly with nonconductive epoxies. Gold or aluminum wire bonding can be used to make electrical connections for maximum placement flexibility.


StatusIn Production - This product has been released to the market.
ConditionCTR @ IF = 10 mA
CTR Min.100%
CTR Max.
Vcc Max. (V)
Switching Time (μs)25
Isolation @ VDC 1 Sec.1500
Package Photo
Package Info6-Lead Ceramic Carrier Chip for Hybrid Assembly
Radiation Tolerant
No Base Connection


  • Current transfer ratio guaranteed over –55 °C to +125 °C ambient temperature range
  • Electrical isolation: 1500 VDC
  • High current transfer ratio: 100% minimum over temperature
  • High current transfer ratio at low input current: 100% at IF = 1 mA over temperature
  • High reliability and rugged construction
  • CTR-comparable to Darlington output but with low saturation VCE = 0.15 V typical
  • Similar to 4N2X, 4N3X type optocouplers
  • Custom package available

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