OLI 249

Features:

 Current transfer ratio guaranteed over -55°C to +100°C ambient temp. range
 1500 Vdc electrical isolation
 Small foot print for hybrid device
 More Radiation tolerant than 4N49 ⁴
 High current transfer ratio at low input current - 200% at I_F =2mA over temperature
 High reliability and rugged construction
 CTR comparable to darlington output but with low saturation V_CE = 0.15v typ.
 Similar to 4N4X type optocouplers
 Custom package available Call Factory ⁴


Specifications

Coupled
Input to Output Isolation Voltage1	± 1500 Vdc
Storage Temperature Range	-65°C to +150°C
Operation Temperature Range	-55°C to +125°C
Mounting Temperature Range ( 3 minutes max. )	240°C
Input Diode
Average Input Current	40 mA
Peak Forward Current ( 1mS duration )	60 mA
Reverse Voltage	3.0 V
Power Dissipation	70 mW
Output Detector
Collector - Emitter Voltage	40 V
Emitter - Collector Voltage	7 V
Collector - Base Voltage	45 V
Power Dissipation	200 mW3

Description

The OLI 249 is designed especially for hybrid application requiring optical isolation with high current transfer ratio and low saturation Vce. Each OLI 249 consists of a light emitting diode and a NPN silicon phototransistor mounted and coupled in a miniature custom ceramic package. The very low input current makes the OLI 249 well suited for direct CMOS to LSTTL / TTL interfaces. Electrical parameters are similar to the JEDEC registered 4N49 optocoupler but with much 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 on request.