High-speed Hermetic Surface Mount Optocoupler

The OLF300 is suitable for interfacing Transistor-Transistor Logic (TTL) to Low Power Schottky Transistor-Transistor Logic (LSTTL), TTL, or Complementary Metal Oxide Semiconductor (CMOS), as well as wide bandwidth analog applications. Each OLF300 has a light emitting diode and an integrated photodiode transistor detector mounted and coupled in a custom 8-pin hermetic flat pack package providing 1000 Vdc electrical isolation between input and output. The integrated photodiode transistor improves switching speed by orders of magnitude as compared to standard photo transistors, by reducing the base to collector capacitance. The internal shield provides excellent common-mode immunity performance.


  • Hermetic SMT package
  • Electrical parameters guaranteed over –55 °C to +125 °C ambient temp. range
  • 1000 Vdc electrical isolation
  • High-Speed, 1 Mbit/s typical
  • Open collector output
  • 300 Khz bandwidth
  • Similar to 6N135/136, 4N55
  • Radiation tolerant
  • 100% hi-rel screenings are offered
Data Sheets OLF300 Data Sheet OLF300_202242B.pdf (258 KB)
Application Notes Skyworks Optocouplers vs. Pulse Transformers Optocouplers_vs_Pulse_Transformers_204659A_AN.pdf (108 KB)
White Paper Optocouplers for the Hybrid industry WP_Optocouplers_for_the_Hybrid_industry.pdf (322 KB)
White Paper Discussion of RGA Test for Moisture Content for Isolink Optocouplers WP_RGA_2017_Feb.pdf (123 KB)
ProductName : OLF300
Memo :
Condition : CTR @ IF = 16 mA
CTR Min. : 9
CTR Max. :
Vcc Max. (V) : 18
Propagation Delay : 6µs Max.
Isolation @ VDC 1 Sec. : 1000
Package Photo :
Package Info : 8-Lead Hermetic Ceramic Flat
Radiation Tolerant : Yes
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