USB规格书.pdf

1 USB測試標准測試標准 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 絕緣電阻 大于等于1 000 Dielectric Withstanding Voltage 耐電壓 The dielectric must withstand 500V AC for one minute at sea level 500 V AC 一分鐘 Low Level Contact Resistance 低電平接觸電阻 30 m maximum when measured at 20mV maximum open circuit at 100mA Mated test contacts must be in a connector housing 在開 最大電 為100 mA電壓為20mV情況下最 大為30m Contact Current Rating 溫升 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 相對溫 為25 250VAC 最小為1 5A 接通電 壓 測試中端子任一點的溫 超過 30 Contact Capacitance 接觸電容 2 pF maximum unmated per contact 最大為2pF Insertion Force 插入 35 N maximum at a maximum rate of 12 5 per minute 在插入速 超過每分鐘12 5 時 超過35N Extraction Force 撥出 10 N minimum at a maximum rate of 12 5 per minute 在拔出速 超過每分鐘12 5 時 超過10N Durability 耐用性 1 500 insertion extraction cycles at a maximum rate of 200 cycles per hour 在速 超過每小時200個循環下經受1 500次插 入與撥出 Cable Pull Out 電纜 出 After the application of a steady state axial load of 40 N for one minute 固定后施加40N的軸向 一分鐘 2 Test Descriptio Performance Requirement Physical Shock 物 沖擊 No discontinuities of 1 s 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 中斷 得大于或等于1 s 30Gs的 半波脈沖承受11ms 從三個正交的方向施加沖 擊 總沖擊 為18次 Random vibration 任意振動 No discontinuities of 1 s 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 中斷 得大于或等于1 s 承受 5 35Gs RMS 朝各個正交的方向各振動15分鐘 Thermal Shock 熱沖擊 10 cycles 55 and 85 The USB connectors under test must be mated 在 55 至 85 中循環10次 端子必須緊密配合 Cable impedance 阻抗 Impedance must be in the range specifiedin Z0 90 15 ZCM 30 30 Signal Pair Attenuation 衰減 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 3 Test Descriptio Performance Requirement Propagation Delay 傳輸延遲 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 延遲偏移 Propagation skew must met the requirements as listed in Section 7 1 3 最大 超過100ps cable Solderability 可焊性 USB contact solder tails must pass 95 coverage after one hour steam aging as specified in Category 2 在經過一個小時的蒸氣 化后焊接端的覆蓋 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個小時 如EIA 364 31測試 Flammability The manufacturer will require its thermoplastic resi