1、h BRITISH STANDARD Harmonized system of quality assessment for electronic components Sectional specification: Fixed inductors with ceramic or ferrite core wound with copper wire for RF circuits The European Standard EN 129200 : 1994, together with its amenchnent Al : 1995, has the status of a Britis
2、h standard BS EN 129200 : 1996 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 129200: 1996 Issue 2, November 1996 AmctNo. 9129 Committees responsible for this British Standard - Date November I Indicated by a sideline in the margin 1996 3 .-ap,-mk - t. - n. i The prepar
3、ataon of thic British stanaard was enrustd to TechniCa COmmiaee Ermsl, Itaiisformq Wucte, magnetic components and ferrite materiale, upon which the fonowing bodies were represented: Federation of the Eiectmnics in dust Minhiry of Defence National Supervisuig -I together with the voting report, circu
4、lated as document CECC (Secretariat) 3637, it was approved as amendment Al to EN 129200 : 1994 on 1994-12-28. The following dates were fixed: - latest date by which the amendment has to be implemented at national level by publication of an identical national standard or by endorsement - latest date
5、by which the nationai standards conflicting with the amendment have to be withdrawn (dp) 1995-10-24 (dw) 1966-10-24 Contents Foreword Section 1. General 1.1 scope 1.2 Relateddocuments 1.3 Monnaton to be given in a detail . specincation 1.4 Terminology lb Marking Section 2. Preferred ratings and Ch8n
6、rcteriStiCS 2.1 Preferred climatic categories Section 3. Quality assessment procedures 3.1 primarystageof manufacture 3.2 stnicturally simiar components 33 cerlinedtestrecorcis 3.4 Part 1: Tape packaging of com- ponents with axial leads on continuous tapes Packaging of components for automatic handl
7、ing; Part 2: Tape packaging of com- ponents with unidirectional leads on con- tinuous tapes 1.3 Information to be piven in a detail specification Detail specifications shall be derived from the relevant blank detail specification. Page 4 EN 129200 : 1994 Detail specifications shall not specify requi
8、rements inferior to those of the generic, sectional or blank detail specification. When more severe requirements are included, they shall be listed in 1.9 of the detail specification and indicated in the test schedules, for example by an asterisk. Note: The information given in 1.3.1 may for conveni
9、ence, be presented in tabular form. The following information shall be given in each detail specification and the values quoted shall preferably be selected from those given in the appropriate clause of this sectional specification. 1.3.1 Outline drawing and dimensions There shall be an illustration
10、 of the inductor as an aid to easy recognition and for comparison of the inductor with others. Dimensions and their associated tolerances, which affect interchangeability and mounting, shall be given in the detail specification. All dimensions shall to be stated in mm. Normally the numerical values
11、shall be given for the length, the width and height of the body and the wire spacing or for cylindrical types the body diameter, and the length and diameter of the termi- nations. When necessary, for example when different case sizes are covered by a detail specification, the dimensions and their as
12、sociated tolerances shall be placed in a table below the drawing. 1.3.2 MountinK The detail specification shall specify the method of mounting to be applied for the application of the vibration and the bump or shock tests. The design of the inductors may be such that special mounting fixtures are re
13、quired in its use. In this case the detail specifica- tion shall describe the mounting fixtures and they shall be used in the application of the vibration and bump or shock tests. NOTE - If recommendations for mounting for “normal“ use are made, they shall be included in the detail specification und
14、er “1.8 Additional information (not for inspection purposes)“. If they are included, a warning can be given that the full vibration, bump and shock performance may not be available if mounting methods other than those specified in 1.1 of the detail specification are used. 1.3.3 Ratings and character
15、istics The ratings and characteristics shall be in accordance with the relevant clauses of this specification, together with the following: (i) Rated inductance range See 2.2.1 BSI BS*EN*129200 96 1624669 057197b A20 Page 5 EN 129200 : 1994 Note: When products approved to the detail specification ha
16、ve different ranges, the following statement should be added: The range of inductance values available in each size is given in the current CECC O0 200 (Register of Approvals)“. (2) Particular characteristics Additional characteristics may be listed, when they are considered necessary to specify ade
17、quately the component for design and application purposes. (3) Solderinq The detail specification shall prescibe the test methods, severities and requirements applicable for the solderability test and the resistance to soldering heat test. 1.3.4 Marking The detail specification shall specify the con
18、tent of the marking on the inductor and on the package. Deviations from 1.5 shall be specifically stated. 1.4 Terminolony In addition to the applicable terms and definitions of CECC 29 O00 (EN 129 O00 : 1993) the following definitions apply: 1.4.1 Rated current (IR) The maximum r.m.s. value of the c
19、urrent, at which an induc- tor may be operated continuously at the temperature. Note: The current may consist of d.c. current only, A.C. current only or of a combination of both. For testing purposes d.c. current is mandatory. High frequencies require a reduction of current in regard to temperature
20、rise by magnetic and skin effect losses. 1.4.2 Incremental current (IcR) That value of polarising direct current when superimposed on the alternating measuring current will cause a reduction in measured inductance value of 10 X. BSI BS*EN*1239200 39b m 1b24bb39 O5713977 7b7 m Page 6 EN 129200 : 1994
21、 1.5 Markinq 1.5.1 The information given in the marking is normally selected from the following list: the relative importance of each item is indicated by its position in the list: 1) Rated inductance *) 2) Tolerance on rated inductance *) 3) Manufacturers name or trade mark 4) Manufacturers type de
22、signation 5) Year and month (or week) of manufacture *) 6) Rated current 7) Climatic category 8) Reference to the detail specification 9) CECC mark Note *) Coded marking according to IEC 51(Sec)257 shall be used. 1.5.2 The inductor shall be marked with i), and 2) above and with as many as possible o
23、f the remaining items as is considered necessary. Any duplication of information in the marking on the inductor should be avoided. 1.5.3 The package containing the inductor(s) shall be clearly marked with all the information listed in 1.5.1. 1.5.4 Any additional marking shall be so applied that no c
24、onfusion can arise. 2.1 2.2 BSI BS*EN*L29200 b Lb24bb 0571778 bT3 Page 7 EN 129200 : 1994 SECTION 2 - PREFERRED RATINGS AND CHARACTERISTICS Preferred climatic categories The inductors covered by this specification are classified into climatic categories according to the general rules given in IEC 68
25、-1. The lower and upper category temperature and the duration of the damp heat, steady state test shall be chosen from the following: Lower category temperature: - 55 OC, - 40 OC and - 25 OC Upper category temperature: t 85 OC, + 100 OC, + 125 OC and t 150 “C Duration of the damp heat, steady state
26、test: 4, 10, 21 and 56 days The severities for the cold and dry heat tests are the lower and the upper category temperatures respectively. Preferred values of ratings 2.2.1 Rated inductance (h) Preferred values of rated inductance are: 1 - 192 - 1,s - 1.8 - 2,2 - 2,7 - 3.3 - 3.9 - 497 5.6 - 6.8 - an
27、d 8.2 and their decimal multiples. These values conform to the E 12 series of preferred values given in IEC 63: Preferred number series for resistors and inductors. If other values are required they shall preferably be chosen from the E24 series. 2.2.2 Tolerance on rated inductance Preferred toleran
28、ce on rated inductance are f 5 Z, f 10 f and f 20 f. Page 8 EN 129200 : 1994 2.2.3 Rated temperature (TR) The standard value of rated temperature is 85 OC. If derating or uprating of current is permitted, the relevant specification shall give guidance e.g. by an appropriate illustration as given bel
29、ow which is not subject to testing. Figure 1: Permissible current versus temperature I : load current IR : rated current Tamb: ambient temperature TR : rated temperature TUC : upper category temperature 3.1 BSI BS*EN*L29200 96 m 162Ybb O571980 251 Page 9 EN 129200 : 1994 SECTION 3 - QUALITY ASSESSME
30、NT PROCEDURES Primary stage of manufacture The primary stage of manufacture is the winding of the inductor element. 3.2 Structurally similar components Inductors considered as being structurally similar are inductors produced with similar processes and materials, though they may be of different size
31、s and inductance and current values. 3.3 Certified test records The information required in 3.5.1 of CECC 29 O00 (EN 129 O00 : 1993) shall be made available when prescribed in the detail specification and when requested by a purchaser. After the endurance test the para- meters for which variables in
32、formation is required are the inductance, Q, the resonant frequency and the d.c. resistance. 3.4 Qualification approval The procedures for qualification approval testing are given in 3.4 of CECC 29 O00 (EN 129 O00 : 1993). The schedule to be used for qualification approval testing on the basis of lo
33、t-by-lot and periodic tests is given in 3.5 of this specification. The procedure using a fixed sample size schedule is given in 3.4.1 and 3.4.2 below. For the two procedures the sample sizes and the number of permissible defectives shall be of comparable order. The test conditions and requirements s
34、hall be the same. 3.4.1 Samplinq The fixed sample size procedure is described in 3.4.2 (2) of CECC 29 O00 (EN 129 O00 : 1993). The sample shall be representative of the range of inductors for which approval is sought. This may or may not be the complete range covered by the detail specification. The
35、 sample shall consist of specimens having the smallest and largest sizes, and for these sizes the lowest and highest inductances. When there are more than four sizes, an intermediate size shall also be tested. Thus for the approval of a range, testing, is required of either four or six values (induc
36、tancelsize combinations). When the range consists of less than four values, the number of specimens to be tested shall be that required for four values. BSI BS*EN*329200 96 = 1624669 0573983 198 Page 10 EN 129200 : 1994 Spares are permitted as follows: (1) One per value which may be used to replace
37、the permitted defective in Group “O“. (2) One per value which may be used as replacements for specimens which are defective because of incidents not attributable to the manufacturer. The numbers given in Group “O“ assume that all groups are applicable. If this is not so the numbers may be reduced ac
38、cordingly. When additional groups are introduced into the qualification approval test schedule, the number of specimens required for Group “O“ shall be increased by the same number as that required for the additional groups. Table 1 gives the number of samples to be tested in each group or sub-group
39、 together the permissible number of defectives for qualification approval tests. 3.4.2 Tests The complete series of tests specified in Table 1 and Annex A are required for the approval of inductors covered by one detail specification. The tests of each group shall be carried out in the order given.
40、The whole sample shall be subjected to the tests of Group “O“ and then divided for the other groups. Specimens found defective during the tests of Group “O“ shall not be used for the other groups. “One defective“ is counted when an inductor has not satisfied the whole or a part of the tests of a gro
41、up. The approval is granted when the number of defectives does not exceed the specified number of permissible defectives for each group or sub-group and the total number of permissible defectives. Note: Table 1 and Annex A together form the fixed sample size test schedule, for which Table 1 includes
42、 the details for the sampling and permissible defectives for the different tests or groups of tests. Annex A together with the details of test contained in Section 4 gives a complete summary of test conditions and performance requirements and indicates where for example for the test method or condit
43、ions of test a choice has to be made in the detail specification. BSI BS*EN*L29200 96 m 1624669 0573982 O24 m Page 11 EN 129200 : 1994 The conditions of test and performance requirements for the fixed sample size test schedule shall be identical to those prescribed in the detail specification for qu
44、ality conformance inspection. 3.5 Quality conformance inspection 3.5.1 Formation of inspection lots a) Groups A and B inspection These tests shall be carried out on a lot-by-lot basis according to Table 2. A manufacturer may aggregate the current production into inspection lots subject to the follow
45、ing safeguards: (i) The inspection lot shall consist of structurally similar inductors (see 3.2). (2a) The sample tested shall be representative of the values and dimensions contained in the inspection lot: - in relation to their number - with a minimum of five of any one value. (2b) If there are le
46、ss than five of any one value in the sample the basis for the drawing of samples shall be agreed between the manufacturer and the National Supervising Inspectorate. b) Group C inspection These tests shall be carried out on a periodic basis accor- ding to Table 3. Samples shall be representative of t
47、he current production of the specified periods and shall be divided into small, medium and large sizes. In order to cover the range of approvals in any period one inductance shall be tested per group of sizes. In subsequent periods other sizes and/or inductances in pro- duction shall be tested with
48、the aim of covering the whole range. 3.5.2 Test Schedule See Tables 2 and 3 BSI BS*EN*129200 b 1624bb9 0571983 TbO m Page 12 EN 129200 : 1994 3.5.3 Delayed delivery When according to the procedures of 3.5.2 of CECC 29 O00 (EN 129 O00 : 1993) re-inspection has to be made, solderability and inductance
49、 shall be checked as specified in Group A and B inspection. 3.5.4 Assessment levels The assessment level(s) given in the blank detail specification shall preferably be selected from the Tables 2 and 3. - - BSI BS*ENaL29200 96 1624669 0571984 9T7 x Issue 2, November 1996 Page 13 EN 129200 : 1994 Table 1 Test schedule for qualification approval Table 1A Assessment level E Sroup No. Clause number and test Number of specimens (n) and number of permissible defectives (cl for 4 or less values to be tested (1) For 6 values to be tested (1) Per va
