OLF249

Radiation Tolerant Phototransistor Hermetic Surface Mount Optocoupler


The OLF249 consists of an LED that is optically coupled to an N-P-N silicon phototransistor mounted in an 8-pin hermetic surface mount flat-pack package. The leads can be formed to provide compliant solder connections to the mounting substrate.

Electrical parameters are similar to the JEDEC registered 4N49 optocoupler, but with much better current transfer ratio (CTR) degradation characteristics due to radiation exposure. Special electrical parametric selections are available on request.

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Specifications

Memo
ConditionCTR @ IF = 1 mA
CTR Min.200
CTR Max.1200
BVCEO (V)40
Vcc Max. (V)
Switching Time (μs)25
Isolation @ VDC 1 Sec.1000/3000
Package Photo
Package Info8-Lead Hermetic Ceramic Flat
Radiation TolerantYes
No Base Connection

Features

  • Hermetic SMT package
  • Compliant surface mounting leads
  • High current transfer ratio
  • Small package size
  • High reliability and rugged construction
  • High-reliability screening available
  • Radiation tolerant

Product Documents

Applications

Avionics

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Biomedical Materials

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Surveillance Systems

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Specialty Medical Applications

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Communications

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Instrumentation

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Radar

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Space

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