USB测试标准

106 USB-IF MEMBER CONFIDENTIAL 以下为USB测试标准，参考标准为USB Specification Revision 2.0 USB　Electrical,Mechanical,and Environmental Compliance Standards Test Descriptio Performance Requirement Visual and Dimensional Inspection Must meet or exceed the requirements specified by the most current version of Chapter 6 of the USB Specification. Insulation Resistance 绝缘电阻 大于等于1，000Ω Dielectric Withstanding Voltage 耐电压 The dielectric must withstand 500V AC for one minute at sea level. 500　V　AC，一分钟 Low Level Contact Resistance 低电平接触电阻 30 mΩ maximum when measured at 20mV maximum open circuit at 100mA.Mated test contacts must be in a connector housing. 在开路最大电流为100 mA电压为20mV情况下最大为30mΩ Contact Current Rating 温升 1.5A at 250V AC minimum when measured at an ambient temperature of 25℃.with power applied to the contacts ,the △T must not exceed +30℃at any point in the USB connector under test. 相对温度为25℃，250VAC，最小为1.5A。接通电压，测试中端子任一点的温度不超过＋30℃。 Contact Capacitance 接触电容 2 pF maximum unmated per contact. 最大为2pF Insertion Force 插入力 35 N maximum at a maximum rate of 12.5㎜ per minute 在插入速度不超过每分钟12.5㎜时不超过35N Extraction Force 拨出力 10 N minimum at a maximum rate of 12.5㎜ per minute 在拔出速度不超过每分钟12.5㎜时不超过10N Durability 耐用性 1,500 insertion/extraction cycles at a maximum rate of 200 cycles per hour. 在速度不超过每小时200个循环下经受1，500次插入与拨出。 Cable Pull-Out 电缆拉出 After the application of a steady state axial load of 40 N for one minute 固定后施加40N的轴向力,一分钟。 Test Descriptio Performance Requirement Physical Shock 物理冲击 No discontinuities of 1μs,or longer duration when mated USB connectors are subjected to 11ms duration 30 Gs half-sine shock pulses.Three shocks in each direction applied along three mutually perpendicular planes for a total of 18 shocks. 匹配USB端子，中断不得大于或等于1μs,30Gs的半波脉冲承受11ms.从三个正交的方向施加冲击，总冲击数为18次 Random vibration 任意振动 No discontinuities of 1μs,or longer duration when mated USB connectors are subjected to 5.35Gs　RMS.15minutes in each of three mutually perpendicular planes 匹配USB端子，中断不得大于或等于1μs,承受5.35Gs　RMS.朝各个正交的方向各振动15分钟。 Thermal Shock 热冲击 10 cycles -55℃ and ＋85℃.The USB connectors under test must be mated. 在-55℃至＋85℃中循环10次，端子必须紧密配合。 Cable impedance 阻抗 Impedance must be in the range specifiedin Z0=90±15%; ZCM=30±30% Signal Pair Attenuation 衰减 Refer to Section 7.1.17 Frequency att(max) 0.064 0.08 0.256 0.11 0.512 0.13 0.772 0.15 1​  0.2 4​  0.39 8​  0.54 12​  0.67 24​  0.95 48​  1.35 96 1.9 200​  3.2 400 5.8 Test Descriptio Performance Requirement Propagation Delay 传输延迟 See Section 7.1.1.1,Section 7.1.4,Section 7.1.16, and Table 7-9 5.2ns/m MAX Propagation Delay Skew 延迟偏移 Propagation skew must met the requirements as listed in Section 7.1.3 最大不超过100ps/cable Solderability 可焊性 USB contact solder tails must pass 95% coverage after one hour steam aging as specified in Category 2 在经过一个小时的蒸气老化后焊接端的覆盖率大于95%。 Humidity 抗潮性 168 hours minimum.The USB connectors under test must be tested in accordance with EIA 364-31. 大于168个小时。如EIA　364-31测试 Flammability The manufacturer will require its thermoplastic resin vendor to supply a detailed C of C with each resin shipment.The C of C shal clearly show the resin’s Ul listing number,lot number,date code,etc. 94V-0