When your application calls for capacitors with a higher degree of reliability than common off-the-shelf parts look to our line of high reliability capacitors. Designed and constructed to exacting standards, our high reliability parts are conditioned at elevated voltages and temperatures and validated via 100% electrical testing. Partial discharge (corona) testing, when specified, is also available to further enhance reliability.
Our high reliability parts currently see service in various critical applications including space flight, military electronics and munitions systems, aerospace and down-hole oil logging. Anywhere critical circuitry is involved, WCI high reliability capacitors can be found.
For applications involving certain environmental conditions, e.g., high humidity, extreme cold, moisture, vibration etc., WCI can provide environmental testing to address these needs. These tests generally included as subgroups of Group B and/or C in military performance standards, can also be individually specified by the customer. A partial listing of environmental tests is detailed below and we welcome the opportunity to discuss your particular requirements.
ENVIRONMENTAL TESTING AVAILABLE (For requirements not listed, please consult the factory)
Resistance to Solder Heat | Terminal Strength | Voltage-Temperature Limits |
Radiograph Inspection | Temperature Coefficient | Moisture Resistance |
Vibration | Accelerated Life Testing | Low Temperature Storage |
Shock, Specified Pulse | Wire Bond Evaluation | Partial Discharge, Corona |
Resistance to Moisture | Resistance to Solvents | Thermal shock |
200°C voltage Conditioning | Humidity, Steady State, Low Voltage |
MILITARY PERFORMANCE SPECIFICTIONS
MIL-PRF-49467 | MIL-PRF-123 | MIL-PRF-55681 |
High reliability military specification testing for sizes 1515 through 13060 with rated voltages of 600v, 1KV, 2KV, 3KV, 4KV, 5KV. Higher voltages available, please consult the factory. Group A testing to include:
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This specification allows an increased reliability level for capacitors used in critical frequency determining applications, timing circuits and other applications where absolute stability is required. The specification covers surface mount sizes 0805 through 2225 in 50V rating and various radial leaded products in 50V, 100V, and 200V ratings. Group A testing to include:
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This high reliability military specification involves the following tests: Group A testing to include:
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Electrical test voltages for DWV and voltage conditioning
Device working voltage (DC) | DWV Test | Voltage Conditioning Test |
< 200 | 2.5 X Rated | 2.0 X Rated |
250 | 500 Volts | 400 Volts |
300 | 500 Volts | 400 Volts |
400 | 600 Volts | 500 Volts |
500 | 750 Volts | 600 Volts |
600 – 1250 | 1.5 X Rated | 1.0 X Rated |
> 1250 | 1.2 X Rated | 1.0 X Rated |