OLF349

Radiation-Tolerant Transistor Output Optocoupler with Base Connection

The OLx349 is designed for applications that require optical isolation with a high CTR and low saturation V_CE. Each optocoupler consists of an LED and NPN silicon phototransistor that is electrically isolated, but optically coupled inside a hermetic (LCC, FP, TO-5) or non-hermetic (Glob Top) package.

Electrical parameters are comparable to the JEDEC registered 4N49 optocoupler, but with a higher CTR and better CTR degradation characteristics. The low input current makes the OLx349 well-suited for direct complementary metal oxide semiconductor (CMOS) to low power Schottky transistor-transistor logic (LSTTL) and transistor-to- transistor logic (TTL) interfaces.

OLx349 devices are offered as unscreened as well as screened versions to customer requirements, including MIL-STD-883 Class B equivalent, MIL-PRF-19500 JAN, JANTX, JANTXV, JANS equivalent and MIL-PRF-38534 Class H, K equivalent.

Data Sheets

Talk to Sales ECAD Model

Specifications

Memo

ConditionCTR @ IF = 1 mA, Vce = 5V

CTR Min. (%)500

CTR Max. (%)1500

BV_CEO (V)80

Switching Time (μs)25

Isolation @ V_DC 1 Sec.1000

Package Photo

Package Info8-Lead Hermetic Ceramic Flat

Radiation Toleranttrue

Base Connectiontrue

Features

Hermetic SMT package
Compliant surface mounting leads
High current transfer ratio
Small package size
High reliability and rugged construction
Offers 100% high reliability screenings

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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