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RF Components // ENVIRONMENTAL CONDITIONS
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ENVIROMENTAL CONDITIONS ( Operating Temperature and Screening Test ) |
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Requirement of devices for operating temperature varies according to the application, operating condition , etc.
TOKYO KEIKI provides the following three grades of devices based on the operating temperature conditions to meet customer's needs. |
| Grade | Guaranteed temparature rang |
| C | -10 ~ +50?C |
| D | -20 ~ +70?C |
| M | -54 ~ +95?C |
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For delivering more reliable products, TOKYO KEIKI conducts the temperature cycle test and the burn-in test for each grade.
ln this manner, TOKYO KEIKI microwave devices have been shipped after rigorous quality assurance test, and furhermore the screening that conforming to MIL-STD-883C shown in the table below can be added by designating the grade "S", with which higher reliability can be assured. |
| No. | Test | MIL-STD | Method | Conditions |
| 1 | Internal visual check | 883C | 2017 Modified | ? |
| 2 | Stabilization bake | 883C | 1008 | C (24h @150?C) |
| 3 | Thermal shock | 202f | 107 | A (10 Cycles -55 ~ +85?C) |
| 4 | Constant acceleration | 883C | 2001 | A (5000G Y1 axis only) |
| 5 | Sealing ( fine leak ) | 883C | 1014 | A1 |
| 6 | Sealing (gross leak ) | 883C | 1014 | C |
| 7 | Burn in | 883C | 1015 | B (100h @+100?C) |
| 8 | External visual check | 883C | 2009 Modified | ? |