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[USB] USB 2.0 镀金厚度有什么要求

P:2008-03-18 13:52:08

1

各大虾:USB 2.0 镀金厚度有什么要求?

de-oxidised copper - 去氧铜,脱氧铜 (0) 投诉

P:2008-03-19 12:22:00

2

度金,我是不知道,度SN我是知道!

multi-step corona drum separator - 多级电晕法鼓式分离器,多级电晕法转鼓式分离器 (0) 投诉

P:2008-03-19 20:12:06

3

下一个USB的规范,里面有接头镀层厚度的要求

GM - global module全局模块 (0) 投诉

P:2009-03-31 14:06:06

4

MRP - material requirement planning材料需求规划 (0) 投诉

P:2009-03-31 16:22:20

5

沒有吧

hybrid-optic access network - 混合光接入网 (0) 投诉

P:2009-04-03 15:26:56

6

15μ或30μ

wrapping - 绕包;包带;绕包带 (0) 投诉

P:2009-04-29 17:09:25

7

USB标准里有写的,好像不是15μ或30μ

underground duct method - 地下管道布线法 (0) 投诉

P:2009-04-29 20:50:51

8

2.0   30u"

ribbon strander - 带式光缆绞制机,光纤带绞合机 (0) 投诉

P:2009-04-30 10:15:20

9

6.5.4.3 Plug (Male) Contact Materials
Substrate Material: 0.30 + 0.05 mm half-hard phosphor bronze.
Plating: Contacts are to be selectively plated.
A. Option I
1. Underplate: Minimum 1.25 micrometers (50 microinches) nickel. Copper over base material
is optional.
2. Mating Area: Minimum 0.05 micrometers (2 microinches) gold over a minimum of
0.70 micrometers (28 microinches) palladium.
3. Solder Tails: Minimum 3.8 micrometers (150 microinches) bright tin-lead over the
underplate.
B. Option II
1. Underplate: Minimum 1.25 micrometers (50 microinches) nickel. Copper over base material
is optional.
2. Mating Area: Minimum 0.05 micrometers (2 microinches) gold over a minimum of
0.75 micrometers (30 microinches) palladium-nickel.
3. Wire Crimp/Solder Tails: Minimum 3.8 micrometers (150 microinches) bright tin-lead over
the underplate.
C. Option III
1. Underplate: Minimum 1.25 micrometers (50 microinches) nickel. Copper over base material
is optional.
2. Mating Area: Minimum 0.75 micrometers (30 microinches) gold.
3. Solder Tails: Minimum 3.8 micrometers (150 microinches) bright tin-lead over the
underplate.

differential block - 差动鼓轮 (0) 投诉

P:2009-04-30 10:17:00

10

是指这一条吗,那应该是0.75um

extruding without shell - 无壳层泡沫绝缘挤出(双层挤出之一种) (0) 投诉

P:2010-03-30 11:56:10

11

USB1.1----插头端子镀金15U"

USB2.0----插头端子镀金30U"

laser diameter measuring instrument - 激光测径仪 (0) 投诉

P:2010-04-06 21:28:39

12

去看SPEC吧,好象有几个option吧。

low concentration impurty - 低浓度杂质 (0) 投诉

P:2010-04-07 09:16:41

13

Thanks

district heating cable - 局部加热电缆 (0) 投诉

P:2020-04-01 14:42:48

14

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emulsion cleaning - 乳浊液净化(处理) (0) 投诉

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