OLI249

Radiation Tolerant, Phototransistor Optocoupler for Hybrid Assembly

The OLI249 is designed especially for hybrid applications that require optical isolation with high current transfer ratio (CTR) and low saturation VCE. Each OLI249 consists of an LED and N-P-N silicon phototransistor that is mounted and coupled in a miniature custom ceramic package. The low input current makes the OLI249 well suited for direct Complementary Metal Oxide Semiconductor (CMOS) to Low Power Schottky Transistor-Transistor Logic (LSTTL)/TTL interfaces.

Electrical parameters are similar to the JEDEC registered 4N49 optocoupler, but with better CTR degradation characteristics due to radiation exposure.

Device mounting is achieved by standard hybrid assembly with non-conductive epoxies. Gold or aluminum wire bonding can be used to make electrical connections for maximum placement flexibility.

Special electrical parametric selections are available upon request.

Data Sheets

Buy Now Talk to Sales ECAD Model

Specifications

Product LifecycleIn Production

Memo

ConditionCTR @ IF = 1 mA

CTR Min.200

CTR Max.1200

BV_CEO (V)40

Vcc Max. (V)—

Switching Time (μs)25

Isolation @ V_DC 1 Sec.1500

Package Photo

Package Info6-Lead Ceramic Carrier Chip for Hybrid Assembly

Radiation TolerantYes

No Base Connection

Features

Current transfer ratio (CTR) is:
- Guaranteed over –55 °C to +100 °C ambient temperature range
- High at low input current—200% at IF = 2 mA over temperature
- Comparable to Darlington output, but with low saturation VCE = 0.15 V typical
1500 VDC electrical isolation
Small footprint for hybrid device
More radiation tolerant than 4N49 (contact Isolink for more information)
Similar to 4N4X type optocouplers
High reliability and rugged construction
Custom package is available

Product Documents

Applications

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Surveillance Systems

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Radar

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Space

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