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1、BRITISH STANDARD BS 9525:1984 Incorporating Amendment No. 1 Rules for the preparation of Detail specifications for Two-part printed board electrical connectors and board-mounted transition devices of assessed quality for D.C. and L.F. applications: Full and basic assessment levels Licensed Copy: Lon
2、don South Bank University, London South Bank University, Fri Dec 08 04:15:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9525:1984 BSI 03-2000 ISBN 0 580 35834 8 Foreword This revised British Standard prescribes the rules for the preparation of detail specifications for two-part printed board elec
3、trical connectors and board-mounted transition devices for d.c. and l.f. applications. It is supplementary to BS 9520 “Specification for electrical connectors of assessed quality for d.c. and low frequency application: Generic data and methods of test”. Examples of detail specifications in the BS 95
4、25 range are BS 9525 N0001 and BS 9525 F0004. This revision updates the rules document following changes in test requirements for connectors for electronic equipment. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible
5、 for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 23 and a back cover. This standard has been updated (see copyright d
6、ate) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No.Date of issueComments 6609September 1991 Indicated by a sideline in the margin Licensed Copy: London South Bank University, London South
7、 Bank University, Fri Dec 08 04:15:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9525:1984 BSI 03-2000i Contents Page ForewordInside front cover 1Scope1 2General1 3Quality assessment procedure5 4Inspection requirements6 Table 1 Mandatory inspection requirements for full assessment level6 Table 2
8、Mandatory inspection requirements for basic assessment level15 Table 3 Comparative table of tests18 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 04:15:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: London South Bank University, London S
9、outh Bank University, Fri Dec 08 04:15:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9525:1984 BSI 03-20001 1 Scope This British Standard prescribes those special rules which, in conjunction with the general rules contained in section 2 of BS 9520:1983, are required for the preparation of detail
10、specifications for two-part printed board electrical connectors and board-mounted transition devices of assessed quality for d.c. and l.f. applications at the full and basic assessment levels. NOTEA board-mounted transition device provides insulation displacement connection between ribbon cable or d
11、iscrete wires and printed boards, using non-removable through-board solder terminations having in-line or staggered pitch configurations. 2 General 2.1 Contacts. Connectors designed to intermate, but which differ in having removable or non-removable contacts with solder, crimp, wire-wrap, push-on, i
12、nsulation displacement, press-fit, etc., terminations, may be included in one detail specification. The types of contact shall be indicated in the title of the connector specification, and for removable contacts the direction of release and removal from the connector e.g. front release, rear removab
13、le, shall be stated. Removable contacts shall be defined in connector detail specifications by means of outline drawings and shall be identified either: a) by reference to the contact detail specification to which the contacts are qualified in the series BS 9521 “Specification for removable contacts
14、 of assessed quality for electrical connectors” as defined in BS 9520 “Generic data, methods of test and rules for the preparation of detail specifications”, e.g. BS 9521 F0001; or b) by means of digits indicating contact size (if applicable), wire accommodation and contact/termination style, preced
15、ed by the connector pattern number, e.g. 9525 F000X/20-20M; or c) where a) or b) cannot be applied, by an accessory style number. 2.2 Assessment level. The detail specification shall show the relevant assessment level, basic, full etc., (see 2.1.4 of BS 9520). Each detail specification shall refer t
16、o only one assessment level. The performance of connectors is normally only assessed with mated pairs from the same manufacturer and in such cases the detail specification shall include a statement to this effect. However, when enhanced compatibility assessment is required by a detail specification,
17、 the following additional design criteria shall be incorporated in the appropriate drawings of that detail specification. a) Female contact holding force. 1) Both a maximum value and a minimum value shall be specified. 2) The sizing and holding force gauges shall be finished to the standard specifie
18、d in the detail specification for the male contact. The method for control of the gauges shall be stated on the drawing, e.g. calibration etc. 3) The number of samples subjected to the test shall be 10 % of the total number of contacts, with a minimum of 20 contacts. 4) The surface finish of the siz
19、ing gauge shall be equal to the maximum permitted for a male contact. 5) The surface finish of the holding gauge shall be equal to the minimum permitted for a male contact. b) Contact tip profile definition. 1) Male contacts. The tip radius or chamfer and the length over which it acts shall be speci
20、fied. 2) Female contacts. When the male contact may come into contact with the entry of the female contact, then a minimum chamfer or radius of the female contact entry shall be specified. c) Contact active zone profile. 1) The design of the active zones of the male and female contacts shall be such
21、 as to avoid regions of localized high pressure, e.g. edge contact, produced by burrs, lack of alignment of mating faces. 2) The wiped active zone of both male and female contacts shall be specified for minimum and maximum material conditions. 3) The surface finish of the wiped active zone of male c
22、ontacts shall be specified. d) Contact active zone finish. In addition to specifying “hard acid gold alloy of 98 % purity or approved compatible alternative”, for plated finishes there shall also be control of the hardening agent. Licensed Copy: London South Bank University, London South Bank Univer
23、sity, Fri Dec 08 04:15:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9525:1984 2 BSI 03-2000 Example. (Co, Ni, or Fe) shall be 0.15 % to 0.3 % by weight, of one of the three quoted elements. The total content of the other two quoted elements shall be less than 0.01 % by weight. Potassium shall be
24、 0.15 % by weight minimum. This “enhanced compatibility” feature shall be specified on the page 5 of the detail specification, and may be applied to either basic or full assessment. In cases where a manufacturer produces only one half of a mated connector, such connectors may be tested with an appro
25、ved mating part to demonstrate functional compatability. In such cases, the detail specification shall include a statement to this effect. In cases where two or more manufacturers wish to include a claim of functional compatability of differing connector styles, and their connectors are tested to de
26、monstrate such compatability, the detail specification shall identify the appropriate agreed tests and include a statement to this effect. 2.3 Title. Connectors to detail specifications in this series have the following titles. “Multi-contact two-part printed board electrical connectors” “Multi-term
27、ination board-mounted transition devices” Typical supplementary information in a title is as follows. See the detail specifications quoted in the foreword as examples for the method of presentation of information required to be shown on the page 5. (See also BS 9000-1 and PD 9004, Circular Letters N
28、o. 15 and 16.) 2.4 Pattern number. The pattern number of a connector or range of connectors shall consist of the relevant detail specification number without the letters BS e.g. 9525 F0004. 2.5 Description of the connector and intended application. The description of the connector shall make referen
29、ce to the method of coupling, polarization, contact type (crimp, solder, etc., removable, non-removable), material or finish, and range of wire and insulation sizes. For connectors having removable contacts the manner of insertion, release and removal of the contacts shall be stated. Where complianc
30、e with the detail specification is dependent on a full complement of contacts being fitted and/or by the use of dummy contacts or unwired contacts with filler plugs, this shall be stated. The description of intended application shall make reference to the major performance characteristics of the con
31、nector, such as non-sealed or sealed, e.g. barrier or barrier and panel sealed, environment resistant, screened or unscreened, etc., and attention may also be drawn to particular uses, e.g. rack and panel or inter-chassis applications. (See also 2.1.4 of BS 9520.) (For two-part connectors): “Non-rem
32、ovable contacts, and through-board, solder and wire-wrap terminations” (For transition devices):“Non-removable through-board solder terminations” Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 04:15:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9525:1984 BSI
33、 03-20003 2.6 Marking of the connector and package. The detail specification shall state that the marking shall be in accordance with 1.1.6 of BS 9520. The individual reference number required by 1.1.6 c) of BS 9520 consists of abbreviations to identify individual connectors, accessories and tools.
34、It is not intended that this reference number shall describe every feature of the connector. An explanation of the reference shall be included in each detail specification similar to the following: 2.6.1 Connector reference numbers Style number:A letter B, denoting two-part printed board connector,
35、followed by four digits. A typical description of a style is B 5100: Connector, fixed. (The detail specification shall designate style and shall relate this number to a control drawing in the CC or FC series, e.g. CC/B 5100) Contact arrangement:Digits denoting the number of contact positions in a co
36、nnector, e.g. 017, 096 etc. These arrangements shall be shown in the outline drawing section of the detail specification. Contact:M = male contact F = female contact H = hermaphrodite contact Termination style:C = crimp L = through-board solder (90) E = through-board solder (90, extra long tail) S =
37、 solder for wire T = through-board solder V = solder for double-sided board, edge mounted W = wire wrap (3 wraps) Z = wire wrap (2 wraps) X = hybrid arrangement to users requirement Polarization (coding):A letter or digit denoting a particular arrangement of a polarizing feature. This shall be omitt
38、ed where no alternative exists. Variant:A digit to denote any variation from the basic specification, e.g. termination style, contact finish, moulding etc. Detail specification shall designate variants. Where no variant exists 0 shall be used. “X” shall be used to denote special user requirement. Ex
39、ample connector reference number:B 5003 041 M W A O NOTEApplication of the above letter references is mandatory but not exhaustive, and additional letters may be used in the detail specification if necessary. Also, the above primary tabulation form shall be used wherever possible. However, if additi
40、onal characteristics have to be specified, e.g. termination length/diagonal/cross-section, contact pitch, contact loading etc., see detail specification BS 9525 F0004 as an example of an approved alternative form. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08
41、04:15:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9525:1984 4 BSI 03-2000 2.6.2 Accessory and tool reference numbers 2.6.3 Connector supplied complete with accessory. Where a connector is supplied complete with an accessory, the accessory reference number is added to that of the connector, e.g.
42、 C1234 20 41 MNO A 2468. 2.6.4 Packaging. Packaging shall include upon request the manufacturers assembly instructions, including wire preparation crimping and contact insertion details. 2.7 Ordering information. For ordering information see 2.4 of BS 9520. 2.8 Drawings. The detail specification sha
43、ll contain drawings in appendices as required by 2.1.5 and Appendix A of BS 9520. 2.9 Ratings (including limiting conditions of use). The following ratings shall be stated (in accordance with 1.1.12 of BS 9520) and the applicability requirements of Table 1 and Table 2 of this specification. 2.9.1 El
44、ectrical. A recommended maximum working current per individual contact size (in isolation) at a specified ambient temperature. Maximum current per contact (for each contact size) through all contacts simultaneously at a specified ambient temperature. Working and proof voltages shall be given for sta
45、ted air pressure(s). 2.9.2 Environmental a) Climatic classification b) Low air pressure severity c) Vibration severity d) Bump severity e) Shock severity f) Acceleration severity1) Style number:A letter A denoting accessory or letter T denoting tool, followed by the prescribed digits. A typical desc
46、ription of a style is A2468 mounting accessory or T3579/2 contact removal tool. (The detail specification shall designate styles and shall relate this number to a control drawing in the CC or FC series, e.g. CC/A2468 CC/T2018.) Termination style/size:Two digits (quoted for accessories where applicab
47、le). Contact size:Two digits (quoted for tools where applicable). Variant:Quoted for accessories. Digit as for connector in 2.6.1. Example accessory tool reference numbers: A 2468 18 0 T 3579/2 Example removable contact reference numbers BS 9521 F000X 20 20 M See 2.1 a) BS 9525 F000X 20 20 M see 2.1
48、 b) A2466 See 2.1 c) 1) Where applicable. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 04:15:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9525:1984 BSI 03-20005 2.9.3 Endurance a) Mechanical operation2) b) Electrical load and temperature: long term (at st
49、ated current and temperature) c) Electrical load and temperature: short term (no electrical load and at upper temperature severity) 2.10 Characteristics. The following characteristics shall be stated (in accordance with 1.1.12 of BS 9520), and the conditions under which they apply. Initial and final values shall both be stated where differences after conditioning are permitted. 2.10.1 Electrical a) Maximum contact resistance b) Minimum insulation resistance 2.10.2 Mechanical a) Connector maximum engaging and separating forces, and minimum separating forces b) Cont