机械及环境性能PhysicalandEnvironmentCharacteristics序号类别规范检验标准1自由跌落从60cm高度自由跌落到30mm厚硬木板上，跌落三次△f/f≤&plu***n;5ppm△R≤20%2振动频率10~55Hz，振幅1.5mm，X、Y、Z方向各振动2小时。△f/f≤&plu***n;5ppm△R≤20%3引出端强度a.拉力：固定振荡器主体，沿引脚轴向施加0.9Kg拉力，保持30&plu***n;5秒。b.弯曲：引脚端头悬挂450g的重物，弯曲90°,时间2~3秒，以相同速度返回原位置，再反向操作一次。引脚无拔出或断裂现象△f/f≤&plu***n;5ppm△R≤20%4密封性将谐振器浸在酒精中，加压5Kg/cm2，时间五分钟。测量引脚与基座间绝缘电阻>500MΩ（DC100V）5可焊性从引脚末端至底部2~2.5mm放入235℃&plu***n;5℃的焊槽内,时间2&plu***n;0.5秒。沾锡面>90%，频率变化≤&plu***n;10ppm6耐焊接热从引脚末端至底部2~2.5mm处放入260℃&plu***n;10℃的焊槽内，时间10&plu***n;0.5秒△f/f≤&plu***n;5ppm△R≤20%7温度循环将谐振器放置在高低温箱中，将温度设置在-20℃，温度到达后保持30分钟，再将温箱升温到+80℃，保持30分钟，这是一个循环；再将温箱降温到-20℃，开始下一个循环，如此循环三次△f/f≤&plu***n;5ppm△R≤20%8恒定湿热在40&plu***n;3℃，90～95%RH，放置96小时，取出后***2小时△f/f≤&plu***n;5ppm△R≤20%9高温老化85℃&plu***n;2℃老化96小时，取出后常温下***2小时△f/f≤&plu***n;5ppm△R≤20%10耐低温-40℃&plu***n;2℃放置96小时，取出后常温下***2小时△f/f≤&plu***n;5ppm△R≤20%PhysicalandEnvironmentCharacteristicsItemConditionoftestPerformanceRequirementsMechanicalShockResonatorshallbemeasuredafter3timesrandomdroppingfromtheheightof60cmontohardwoodenbroadofthicknessmorethan30mmNovisibledamage,andmeasuredValuesshallmeetTable1VibrationSubjectresonatortofollowingvibration:Frequency:：10～55HzAmplitude：1.5mmDuration：3mutuallyperpendicularplanesineach2hoursDirection：XYandZaxisNovisibledamage,andmeasuredValuesshallmeetTable1TerminalStrengthTerminalPullingTerminalBendingForceof5Nisappliedtoeachleadinaxialdirectionfor30&plu***n;5sec.Whenforceof5Nisappliedtoeachleadinaxialdirection,theleadshallfoldedup90ofromtheaxialdirectionandfoldedbacktotheaxialdirection.Thespeedoffoldingshallbeeach3seconds.Novisibledamage,andmeasuredValuesshallmeetTable1SolderabilityLeadterminalsareimmersedupto2mmfromResonator’sbodyinsolderingbathof235&plu***n;5℃for2&plu***n;0.5sec.Morethan95％oftheterminalsurfaceoftheresonatorshallbecoveredwithfreshsolderResistancetoSolderingHeatLeadterminalsareimmersedupto2mmfromResonator’sbodyinsolderingbathof260&plu***n;10℃for10&plu***n;0.5secondsandthenresonatorshallbemeasuredafterbeingplacedinnaturalconditi***for2hours.Novisibledamage,andmeasuredValuesshallmeetTable1TemperatureCyclingSubjecttheresonatorto-20℃for30min,followedbyahightemperatureof+80℃for30min.Cyclingshallberepeated5times.resonatorshallbemeasuredafterbeingplacedinnaturalconditi***for2hours.Novisibledamage,andmeasuredValuesshallmeetTable1HeatResistanceSubjecttheresonatorto+85℃&plu***n;5℃for96hours,resonatorshallbemeasuredafterbeingplacedinnaturalconditi***for2hours.Novisibledamage,andmeasuredValuesshallmeetTable1ColdResistanceSubjecttheresonatorto-40℃&plu***n;5℃for96hours,resonatorshallbemeasuredafterbeingplacedinnaturalconditi***for2hours.Novisibledamage,andmeasuredValuesshallmeetTable1HumiditySubjecttheresonatorat+40℃&plu***n;5℃and90％～95％R.H.for96hours,resonatorshallbemeasuredafterbeingplacedinnaturalconditi***for2hours.Novisibledamage,andmeasuredValuesshallmeetTable1)