OLC549

Radiation-Tolerant, Transistor Output Optocoupler with Base Connection

The OLx549 is designed for low input current 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 due to radiation exposure.

OLx549 devices are offered as unscreened versions as well as screened 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

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Specifications

Memo

ConditionCTR @ IF = 1 mA, Vce = 5V

CTR Min. (%)1500

CTR Max. (%)4000

BV_CEO (V)80

Switching Time (μs)25

Isolation @ V_DC 1 Sec.1000

Package Photo

Package Info6-Lead Non Hermetic LCC

Radiation Toleranttrue

Base Connectiontrue

Features

Radiation tolerant version of the 4N49U
High current transfer ratio (CTR) is guaranteed:
- – Over –55 °C to +125 °C ambient temperature range
- – At LED current of 1mA
1000 VDC electrical isolation
Same processing and construction as the OLC249, but with a higher CTR

Product Documents

Applications

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