谢谢！

你的制作依據是USB協會規范。可以參照UL2725、2835、20276等

0USB2.0测试规格.pdfUSB2.0测试标准

我那有个USB2.0的行业标准,不知是否对你有帮助

文件太大,上传不了,郁闷

有MICRO-USB资料吗?

看不到

大家好.

请问有谁知道USB协会的联系方式?

直接上USB协会网站www.usb.org ,国内如果要搞USB认证直接找台湾ETC,我去年刚搞过

USB2.0的电线结构和传输特性的标准是在USB2.0规范上的,但在USB2.0的规范上并没有规定符合那个安规,一般情况下我们是依UL规范做的,因为USB2,0的结构按UL758标准对号入座的话有2725,20276,20379等等很多,有的厂家还用2835,所以这个并没有定论,要看你客户的要求了.

look

就是2樓回答的

USB2.0 的標準是要求TYPE CM（UL444) 的。 協會認証好象也接受2725。

UNDERWRITERS LABORATORIES INC.              APPLIANCE WIRING MATERIAL

Subj. 758     Section 2     Page 2725        Issued:  1975-05-02

                                Revised:  2003-04-04

 

Style 2725    Electronic Cable.

______________________________________________________________________________

 

Rating     60°C or 80°C, 30 V.

______________________________________________________________________________

 

Insulated     Labeled or Complies with manufacturer's AWM Procedure.

Singles       May include mixed sizes.

______________________________________________________________________________

 

Conductor     Two, three, or four parallel, or two or more Assembly

           twisted insulated singles or groups of twisted singles

           twisted together or groups of twisted singles may be laid

           parallel to form flat or oval cable.  Lay not specified

           barrier layer and/or fillers optional.  Manufacturer shall

           maintain a complete description of each assembly.  Diameter

           of assembly under jacket one inch maximum.

______________________________________________________________________________

 

Shield     Optional.

______________________________________________________________________________

 

Jacket     PVC, Class 43, 9 mils minimum average, 7 mils minimum at

           any point.

______________________________________________________________________________

 

Standard      Appliance Wiring Material UL 758.

______________________________________________________________________________

 

Instructions  Detailed Examination.

to UL

Representative

______________________________________________________________________________

 

UL         (4)  Detailed Examination.

Counter-Check (4)  Flexing.

*Program      (12) Horizontal Flame Test.

______________________________________________________________________________

 

Marking       General.

______________________________________________________________________________

 

Use        Internal wiring of electronic equipment in Class 2 systems

           only.

UNDERWRITERS LABORATORIES INC.                     APPLIANCE WIRING MATERIAL

Subj. 758        Section 2        Page 2835        Issued:  1976-10-28

                                                  Revised:  2003-01-03

 

Style 2835	PVC Jacketed Cable.
Rating	60°C, 30 V.
Conductor	40 AWG minimum.  Material not specified.
Insulated Singles	Material not specified for use statement 1A or 1B.  Labeled or complies with manufacturer's Procedure for use statement 2A or 2B.
Assembly	Consists of two or more conductors, twisted pairs, or groups of twisted conductors.  The conductors may be laid parallel or twisted together to form a flat, oval, or round cable construction.  Lay not specified.  Barrier layer and/or fillers optional. May use same or mixed AWG sizes.  Manufacturer shall maintain a complete description of each assembly.
Covering	Optional.  PVC, 5 mils minimum at any point, over the assembly or groups of singles.
Shield	Optional.  May be over one or more of the  insulated conductors or applied over the assembly.
Jacket                 * *	PVC - Class 43.   If parallel construction is rippable, the measurements are made after ripping.     Dia# of Cable   under Jacket               Minimum        Minimum    in inches              Average (mils)  at any point   0.250 or less (1A,2A only)      15             13 0.250 or less (1B,2B only)      30             27 0.251 - 0.424                   30             27 0.425 - 0.700                   60             48 0.701 - 1.500                   80             64 1.501 - 2.500                  110             88 2.501 or larger                140            112   # = Major diameter if flat or oval construction.

                            (Continued on Page 2835A)

 

 

UNDERWRITERS LABORATORIES INC.                      APPLIANCE WIRING MATERIAL

Subj. 758        Section 2        Page 2835A        Issued:  1976-10-28

                                                   Revised:  2003-01-03

 

Standard	Appliance Wiring Material UL 758.
Instructions to UL Representative	Detailed Examination.
UL Counter-Check Program	(4)  Detailed Examination. (4)  Flexibility Test. (12) Cable Flame Test on Completed Cable, External Use,      Constructions 1B and 2B. (12) Horizontal Flame Test on Completed Cable Internal      Use, Constructions 1A and 2A.
Marking	General.
Use No. 1A     Use No. 1B         Use No. 2A       Use No. 2B	Internal wiring in Class 2 circuits of electronic equipment where each end is terminated in connectors.            CABLES - using 30 mils or greater jacket thickness only:  External interconnection or internal wiring in Class 2 circuits of electronic equipment where each end is terminated in connectors.   Internal wiring in Class 2 circuits of electronic equipment where not routed along walls, floors, or other abuse areas.            CABLES - using 30 mils or greater jacket thickness only:  External interconnection or internal wiring in Class 2.

 

 

 

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