System Reliability

 Component Screening

     

SCL has initiated screening of microelectronic devices and Electronic parts (passive, active, leaded and Chip). The available environmental, mechanical and Electrical test facilities cater for screening and testing of devices as per MIL-STD- 883 (for Class level S & B), MIL-STD-750 and MIL-STD-202.

The devices with inherent manufacturing defects are weeded out by subjecting them to battery of tests to accelerate the failure mechanisms. The screening of parts is carried out to ensure their suitability for a given application by appropriate selection of tests,  durations and severity. The screening activities are carried out in Static Safe areas in controlled temperature  and humidity conditions.  


Electrical Testing

   
The devices presently being screened include:  

12 bit A/D Converters


Forced Temp. Cycling

D/A converters
Crystal oscillators
Resistors & capacitors ( Chip & Leaded type)
Switched Capacitor Filters
Current Drivers
Relay drivers, etc.
     

Semi-automatic parameter test jigs are  developed to meet the specific device requirements.

     

The  screening operations carried out include:


Nitrogen Filling & Sealing

Visual Inspection
Temperature Cycling
Burn-in testing
Constant Acceleration
Seal Test ( Fine and Gross )
Electrical testing
Serialization