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1、BRITISH STANDARD BS 9075 N024:1978 Incorporating Amendment Nos. 1 and 2 Detail specification for Fixed monolithic ceramic dielectric capacitors (type 2C1) Rectangular non-metallic case, centred wires on one face Full assessment level UDC 621.319.4:621.3.049.774:621.315.612 Licensed Copy: London Sout
2、h Bank University, London South Bank University, Fri Dec 08 02:28:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9075 N024:1978 BSI 01-2000 ISBN 0 580 10340 4 A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for t
3、heir 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 8 and a back cover. This standard has been updated (see copyright date) an
4、d 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 3364September 1980 3836December 1981 Indicated by a sideline in the margin Licensed Copy: London South Bank University, L
5、ondon South Bank University, Fri Dec 08 02:28:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9075 N024:1978 BSI 01-2000i Contents Page 1Ratings (including limiting conditions of use) and characteristics2 2Special characteristics2 3Additional information (not for inspection purposes)2 4Marking of t
6、he component and package2 5Ordering information2 6Related documents2 7Inspection requirements3 Table 1 Dimensions and ratings1 Table 2 Test schedule3 Table 3 Test requirements8 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:28:15 GMT+00:00 2006, Uncontrolled
7、 Copy, (c) BSI ii blank Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:28:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9075 N024:1978 BSI 01-20001 Table 1 Dimensions and ratings ELECTRONIC COMPONENTS OF ASSESSED QUALITY: DETAIL SPECIFICATION FIXED CAPACI
8、TORS MONOLITHIC CERAMIC DIELECTRIC TYPE 2C1 RECTANGULAR NON METALLIC CASE, CENTRED WIRES ONE FACE FULL ASSESSMENT NOTE 1Tolerances on wire diameters are specified in 1.1.12 4) of BS 9070:Section 5:1971. Pattern reference Maximum dimensions S 0.4 (See note 2) XYZ A3.813.812.542.54 B5.085.082.545.08 C
9、7.627.622.545.08 NOTE 1Lead spacing (S) to be measured at the case for patterns A and C, and at the shoulder for pattern B. NOTE 2For individual manufacturers approved capacitance ranges see PD 9002. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:28:15 GMT+0
10、0:00 2006, Uncontrolled Copy, (c) BSI BS 9075 N024:1978 2 BSI 01-2000 1 Ratings (including limiting conditions of use) and characteristics 2 Special characteristics Not applicable. 3 Additional information (not for inspection purposes) 3.1 Application notes. For use in by-pass, coupling or frequency
11、 discriminating applications where high capacitance with stability over a wide temperature range is required. 4 Marking of the component and package The marking of the component and package shall be in accordance with the requirements of 1.1.6 of BS 9070:Section 1:1969. 5 Ordering information Orders
12、 for capacitors covered by this specification shall contain the following information (in accordance with the requirements of 2.4 of BS 9070:Section 2:1969: a) Quantity. b) Capacitance value and tolerance. (The code in clause 1 may be used for tolerance.) c) Rated voltage. d) Pattern reference. e) B
13、S number, issue number and date. Example: 10 000 pF, M, 100 V, B, BS 9075 N024 Issue 2 1978. 6 Related documents BS 2011, Basic environmental testing procedures. BS 2488, Schedule of preferred numbers for the resistance of resistors and the capacitance of capacitors for telecommunication equipment.
14、BS 6001, Sampling procedures and tables for inspection by attributes. BS 9000, General requirements for electronic components of assessed quality. BS 9070, Fixed capacitors of assessed quality: Generic data and methods of test. PD 9002, BS 9000 Component selection guide Part 1: Qualified products li
15、st. Capacitance rangeCapacitance values are taken from the E12 series of BS 2488 (IEC 63) Standard selection tolerance 10 % (K); 20 % (M); 20 % + 80 % (Z) Temperature characteristic2C1 20 % over category temperature range Rated voltage UR50 V, 100 V and 200 V Category voltage UC50 V, 100 V and 200 V
16、 Environmental classification55/125/56 Bump severity390 m/s2, 4 000 10 bumps Vibration severity10 Hz to 2 000 Hz; 0.75 mm or 98 m/s2; 6 h Low air pressure2 kPa (20 mbar) Solderability2 s without ageing 3 s with ageing Resistance to soldering heat350 C Licensed Copy: London South Bank University, Lon
17、don South Bank University, Fri Dec 08 02:28:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9075 N024:1978 BSI 01-20003 7 Inspection requirements 7.1 The capacitors covered by this specification shall be tested in accordance with the inspection schedule given in Table 2. 7.2 This schedule gives the
18、 appropriate tests from BS 9070:Section 1 or Section 5. 7.3 Where a subgroup contains more than one test they shall be carried out in the order given in the schedule. 7.4 Samples submitted to tests which are marked as “(D)” shall not be accepted for release BS 9000 (see 2.6.5 of BS 9000-1:1971). Tab
19、le 2 Test schedule Inspection BS 9070:Section 1 or Section 5 reference and conditions of test Performance requirements where not otherwise specified Group A Subgroup A0 Voltage proof (see note 1) 5.2.4.2 (To be applied on a sampling basis lot-by-lot except subgroup A0) Subgroup A4 not applicable 100
20、 % test Test point A for 2 s at 2 UR Test method 1 Maximum charge and discharge current: 0.05 A No breakdown or flashover Subgroup A1 Visual examination1.2.2 Inspection level I, AQL 1.5 % As 1.2.2 Subgroup A2 Pre-conditioning Capacitance5.2.4.3 Inspection level II, AQL 0.65 % 1 h at UCT followed by
21、24 h at 15 C to 35 C As Table 3, code B Subgroup A3 Tangent of loss angle Insulation resistance 1.2.4.4 5.2.4.7 Inspection level I, AQL 1.5 % Test point A only 10 1 V for UR 100 V 100 15 V for UR W 100 V As Table 3, code C As Table 3, code D Subgroup A5 CTR information5.1.11Attributes information fo
22、r subgroups A1, A2 and A3 Group B(To be applied on a sampling basis lot-by-lot.) Subgroups B3, B4, B5 and B6 not applicable Subgroup B1 Dimensions1.2.3.1 Inspection level S-4, AQL 4 % As 1.2.3.1 Subgroup B2 (D) (See note 2) Robustness of terminations Visual examination Solderability (without ageing)
23、 1.2.6.1 1.2.2 5.2.6.2(1) Inspection level S-3, AQL 4 % Tensile and bending Solder globule As Table 3, code A 2 s maximum Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:28:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9075 N024:1978 4 BSI 01-2000 Table 2
24、Test schedule Inspection BS 9070:Section 1 or Section 5 reference and conditions of test Performance requirements where not otherwise specified Subgroup B2 (D) Initial measurements Pre-conditioning Capacitance Climatic sequence (restricted) Dry heat Damp heat, cyclic Cold Damp heat, cyclic Final mea
25、surements Visual examination Capacitance Tangent of loss angle Insulation resistance 5.2.4.3 5.2.6.8 5.2.6.8(2) 5.2.6.8(3) 5.2.6.8(4) 5.2.6.8(6) 1.2.2 5.2.4.3 1.2.4.4 5.2.4.7 As subgroup A2 One cycle only As Table 3, code B As Table 3, code A As Table 3, code E As Table 3, code C As Table 3, code F
26、Subgroup B7 (D) Initial measurements Pre-conditioning Capacitance Endurance Final measurements Visual examination Capacitance Tangent of loss angle Insulation resistance 5.2.4.3 5.2.7 1.2.2 5.2.4.3 1.2.4.4 5.2.4.7 Inspection level S-4, AQL 1.5 % To be applied only in the event of failure to comply w
27、ith the requirements of subgroup C5 As subgroup A2 48 h duration 1.5 UC at UCT As Table 3, code B As Table 3, code A As Table 3, code E As Table 3, code C As Table 3, code F Subgroup B8 CTR information5.1.11Attributes information for subgroups B1 and B2 only Group C Subgroup C1 (D) Drying Temperatur
28、e characteristic of capacitance Solderability (with ageing) 1.2.4.1 5.2.4.11 5.2.6.2(1) (To be applied on a sampling basis at three-monthly intervals) Subgroups C2 and C4 not applicable Inspection level S-3, AQL 6.5 % Solder globule 20 % 3 s maximum Licensed Copy: London South Bank University, Londo
29、n South Bank University, Fri Dec 08 02:28:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9075 N024:1978 BSI 01-20005 Table 2 Test schedule Inspection BS 9070:Section 1 or Section 5 reference and conditions of test Performance requirements where not otherwise specified Subgroup C3 (D) Initial measu
30、rements Pre-conditioning Capacitance Damp heat (steady state) Final measurements Visual examination Capacitance Tangent of loss angle Insulation resistance 5.2.4.3 5.2.6.9 1.2.2 5.2.4.3 1.2.4.4 5.2.4.7 Inspection level S-3, AQL 6.5 % As subgroup A2 56 days As Table 3, code B As Table 3, code A As Ta
31、ble 3, code E As Table 3, code C As Table 3, code F Subgroup C5 (D) Initial measurements Pre-conditioning Capacitance Endurance Damp heat, cyclic Final measurements Visual examination Capacitance Tangent of loss angle Insulation resistance 5.2.4.3 5.2.7 5.2.6.8(6) 1.2.2 5.2.4.3 1.2.4.4 5.2.4.7 Inspe
32、ction level S-3, AQL 4 % As subgroup A2 1 000 h duration, 1.5 UC at UCT 2 cycles to be conducted before final measurements As Table 3, code B As Table 3, code A As Table 3, code E As Table 3, code C As Table 3, code F Subgroup C6 CTR information5.1.11Attributes information for subgroups C1, C3 and C
33、5 Measurements information for subgroup C5 to be presented in grouped frequency tables showing: a) The change of capacitance resulting from the tests. b) The distribution of tangent of the loss angle and insulation resistance before and after the tests Group D Subgroup D1 (D) Initial measurements Pr
34、e-conditioning Capacitance5.2.4.3 (To be applied on a sampling basis at three-yearly intervals). Subgroups D4 and D5 not applicable Inspection level S-3, AQL 4 % Minimum sample size 13 As subgroup A2 As Table 3, code B Licensed Copy: London South Bank University, London South Bank University, Fri De
35、c 08 02:28:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9075 N024:1978 6 BSI 01-2000 Table 2 Test schedule Inspection BS 9070:Section 1 or Section 5 reference and conditions of test Performance requirements where not otherwise specified Subgroup D1 (i) (D) Robustness of terminations Resistance t
36、o soldering heat Subgroup D1 (ii) (D) Vibration Visual examination Bump Visual examination Subgroup D1 (iii) (D) Rapid change of temperature Climatic sequence Dry heat Damp heat, cyclic Cold Low air pressure Damp heat, cyclic Final measurements Visual examination Capacitance Tangent of loss angle In
37、sulation resistance 1.2.6.1 5.2.6.2(2) 5.2.6.7 1.2.2 1.2.6.4 1.2.2 5.2.6.3 5.2.6.8 5.2.6.8(2) 5.2.6.8(3) 5.2.6.8(4) 5.2.6.8(5) 5.2.6.8(6) 1.2.2 5.2.4.3 1.2.4.4 5.2.4.7 50 % of the sample (minimum 7) Tensile and bending Remainder of the sample (minimum 6) 10 Hz to 2 000 Hz, 6 h 0.75 mm or 98 m/s2 1/3
38、 of the sample in each of the three planes 4 000 10 bumps 390 m/s2 1/3 of the sample in each of the three planes Specimens from (i) and (ii) combined 5 min 15 C to 35 C at 2 kPa Applied voltage UR for 1 min As Table 3, code A As Table 3, code A As Table 3, code A As Table 3, code E As Table 3, code
39、C As Table 3, code F Subgroup D2 (D) Initial measurements Pre-conditioning Capacitance Endurance Damp heat, cyclic 5.2.4.3 5.2.7 5.2.6.8(6) Inspection level S-3, AQL 4 % (minimum 13) As subgroup A2 2 000 h duration 1.5 UC at UCT 2 cycles Licensed Copy: London South Bank University, London South Bank
40、 University, Fri Dec 08 02:28:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9075 N024:1978 BSI 01-20007 Table 2 Test schedule Inspection BS 9070:Section 1 or Section 5 reference and conditions of test Performance requirements where not otherwise specified Subgroup D2 (D) Final measurements Visual
41、 examination Capacitance Tangent of loss angle Insulation resistance 1.2.2 5.2.4.3 1.2.4.4 5.2.4.7 As Table 2, code A As Table 3, code E As Table 3, code C As Table 3, code F Subgroup D3 (D) Mould growth Final measurement Visual examination 5.2.6.12 1.2.2 Inspection level S-3, AQL 4 % 28 days Extent
42、 of growth u scale 2 of BS 2011-2.1J No electrical measurements required Subgroup D6 CTR information5.1.11Attributes information for subgroups D1, D2 and D3 Measurements information for subgroups D1 and D2 to be presented in grouped frequency table showing: a) The change in capacitance resulting fro
43、m the test. b) The distribution of the tangent of the loss angle and insulation resistance before and after the tests NOTE 1Other electrical tests should not be carried out for at least 24 h after voltage proof testing. NOTE 2Subgroup B2 is to be applied at the inspection level S-3, AQL 2.5 % in the
44、 event of failure to comply with the requirements of subgroup C3. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:28:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9075 N024:1978 8 BSI 01-2000 Table 3 Test requirements CodeTitlePerformance requirements AVis
45、ual examinationThere shall be no visible damage which could reduce the usability of the product for its intended purpose BCapacitanceThe capacitance shall be within the specified tolerance after correction to allow for 1 000 h ageing CTangent of the loss angle The tangent of the loss angle shall not
46、 exceed the following: 0.025 DInsulation resistanceTest point A W 10 G7 or 1 000 s whichever is the lesser Test point C W 5 G7 ECapacitanceThe change of capacitance from the initial measurement shall not exceed 10 %. If this requirement is not complied with it is required to re-measure the capacitan
47、ce after pre-conditioning according to subgroup A2. The pre-conditioning shall not be carried out until measurements of tangent of loss angle and insulation resistance have been completed and recorded. FInsulation resistanceTest point A W 1 G7 or 100 s whichever is the lesser Test point C W 5 G7 Lic
48、ensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:28:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI blank Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:28:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9075 N024:1978 BSI
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