usb測(cè)試標(biāo)準(zhǔn)

以下為USB測(cè)試標(biāo)準(zhǔn)，參考標(biāo)準(zhǔn)為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
絕緣電阻?大于等于1，000Ω
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 mΩ maximum when measured at 20mV maximum open circuit at 100mA.Mated test contacts must be in a connector housing.
在開(kāi)路最大電流為100 mA電壓為20mV情況下最大為30mΩ
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(duì)溫度為25℃，250VAC，最小為1.5A。接通電壓，測(cè)試中端子任一點(diǎn)的溫度不超過(guò)＋30℃。
Contact Capacitance
接觸電容?2 pF maximum unmated per contact.
最大為2pF
Insertion Force
插入力?35 N? maximum at a maximum rate of
12.5㎜ per minute
在插入速度不超過(guò)每分鐘12.5㎜時(shí)不超過(guò)35N
Extraction Force
撥出力?10 N minimum at a maximum rate of 12.5㎜
per minute
在拔出速度不超過(guò)每分鐘12.5㎜時(shí)不超過(guò)10N

Durability
耐用性?1,500 insertion/extraction cycles at a maximum rate of 200 cycles per hour.
在速度不超過(guò)每小時(shí)200個(gè)循環(huán)下經(jīng)受1，500次插入與撥出。
Cable Pull-Out
電纜拉出?After the application of a steady state axial load of 40 N for one minute
固定后施加40N的軸向力,一分鐘。
Test Descriptio?Performance Requirement

Physical Shock

物理沖擊?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，中斷不得大于或等于1μs,30Gs的半波脈沖承受11ms.從三個(gè)正交的方向施加沖擊，總沖擊數(shù)為18次

Random vibration
任意振動(dòng)?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，中斷不得大于或等于1μs,承受5.35Gs　RMS.朝各個(gè)正交的方向各振動(dòng)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(huán)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
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?
最大不超過(guò)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(jīng)過(guò)一個(gè)小時(shí)的蒸氣老化后焊接端的覆蓋率大于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個(gè)小時(shí)。如EIA　364-31測(cè)試
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