BS-9070-N003-1971.pdf

BRITISH STANDARD BS 9070 N003:1971 Incorporating Amendment No. 1 Detail specification for Fixed metallized mica dielectric capacitors (style C2AEA) Rectangular non-metallic case, axial wires at both ends General application category UDC 620.178.3.052 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:29:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9070 N003:1971 © BSI 01-2000 ISBN 0 580 06048 9 A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible 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 5 and a back cover. This standard has been updated (see copyright date) 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 1684October 1975Indicated by a sideline in the margin Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:29:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9070 N003:1971 © BSI 01-2000i Contents Page 1Ratings (including limiting conditions of use) and characteristics1 2Special characteristics2 3Application notes2 4Inspection schedule2 5Ordering information2 Table 1 Dimensions and ratings1 Table 2 Performance requirements3 Table 3 Inspection schedule4 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:29:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:29:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9070 N003:1971 © BSI 01-20001 Table 1 Dimensions and ratings 1 Ratings (including limiting conditions of use) and characteristics Standard values of rated capacitance: E24 series of BS 2488, intermediate values from E48 or E96 series. Environmental severities ELECTRONIC PART OF ASSESSED QUALITY: DETAIL SPECIFICATION FIXED CAPACITOR METALLIZED MICA DIELECTRIC RECTANGULAR NON-METALLIC CASE, AXIAL WIRES BOTH ENDS GENERAL APPLICATION STYLE: C2AEA All dimensions are in millimetres. Pattern reference Maximum dimensions da (nom) Rated and category voltages Humidity category XYZ UR100 UC63 250 160 400 250 800 500 Maximum capacitance (pF) A B C D E 9.0 9.0 14.0 18.3 30.0 8.0 8.0 9.2 12.0 19.0 3.6 5.2 5.2 6.0 8.5 0.5 0.5 0.6 0.8 0.8 250 1 000 3 500 6 000 75 000 2 000 4 300 47 000 100 300 1 500 2 000 33 000 500 2 500 21 21 21 56 56 a See 1.1.12 4) of BS 9070:1969 for the tolerance on diameter of wire terminations. Selection tolerance: For CRW 100 pF: ± 0.5 %, ± 1 %, ± 2 %, ± 5 %. For CR 50 pF but u 100 pF. 20 to + 50 p.p.m./°C for CR 100 pF. Vibration: Frequency: 102 000 Hz Displacement: 0.75 mm Acceleration: 98 m/s2 Duration: 6 h Bump: 390 m/s2 1 000 ± 10 bumps Low air pressure: 2 kN/m2 a Solderability: 2 s without ageing 3 s with ageing Resistance to soldering heat: 350 °C. a 1 kN/m2= 10 mbar. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:29:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9070 N003:1971 2 © BSI 01-2000 2 Special characteristics Not applicable. 3 Application notes These capacitors are suitable for applications where high stability of capacitance is required, e.g. filter and tuned circuits. Changes of capacitance and tangent of loss angle are small over the range of frequency and temperature. 4 Inspection schedule The capacitors covered by this specification shall be tested to the inspection schedule given in Table 3. This schedule gives the appropriate tests from the schedule in 7.3.1 of BS 9070 and makes reference to the particular clauses of BS 9070:1969 which are applicable. The performance requirements to be met in the initial and final measurements of the tests in this schedule are prescribed in Table 2. 5 Ordering information When ordering parts to this detail specification the following information shall be given: 1) Capacitance value and selection tolerance. 2) Rated voltage. 3) Reference code (see Appendix J to BS 9070:1969). 4) BS number of this detail specification. Example: . . . off 3 500 pF ± 2 % 100 V C2AEAC to BS 9070 N003. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:29:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9070 N003:1971 © BSI 01-20003 Table 2 Performance requirements SubgroupsVisual examinationCapacitanceTangent of loss angleInsulation resistanceVoltage proof Initial measurements A0 Voltage proof A1 Visual examination A2 Capacitance Within the specified selection tolerance Test point A W 25 000 M7 or 1 000 7 F whichever is the less Test point C W 10 000 M7 There shall be no breakdown or flashover Capacitance (pF) Tan $ 10 but u 25 25 but u 1 000 1 000 (max.) 0.003 0.002 0.001 A3 Tangent of loss angle Insulation resistance B2 Climatic (shortened) B7 Endurance C3 Damp heat (steady state) C5 Endurance D0 Initial measurements As 1.2.2 Final measurements B2 Climatic (shortened) D1 Mechanical and climatic B7 Endurance C5 Endurance D2 Endurance C3 Damp heat (steady state) There shall be no visible damage so as to reduce the usability of the product for its intended purpose Change shall not exceed 0.5 % or 0.5 pF whichever is the greater No change from initial requirement Test point A Patterns A, B and C W 12 500 M7 or 500 7 F whichever is less Patterns D and E as initial limit Test point C Patterns A, B and C: W 5 000 M7 Patterns D and E: W 10 000 M7 There shall be no breakdown or flashover C1 Short term stabilityNA Fluctuations in capacitance value shall not exceed 1 part in 10 000 NANANA C1 Capacitance driftNA for 50 100 pF Cap. drift = (0.0005 C + 0.1) NANANA C4 Insulation resistance (hot) NANANATest point A only 2 500 M7 or 10 7F whichever is the less NA D3 Mould growth There shall be no visible damage so as to reduce the usability of the product for its intended purpose Change shall not exceed 0.25 % or 0.25 pF whichever is the greater No change from initial requirement As initial requirement There shall be no breakdown or flashover Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:29:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9070 N003:1971 4 © BSI 01-2000 Table 3 Inspection schedule SubgroupTitle of test BS 9070 Subclause numbers Inspection level AQL (%) Destructive (D) or non-destructive (ND)Section 1Section 7 A0Voltage proof (test point A only) 1.2.4.27.2.4.2100 % inspectionND A1Visual examination1.2.2I1.5ND A2Capacitance1.2.4.37.2.4.3II0.65ND A3Tangent of loss angle Insulation resistance 1.2.4.4 1.2.4.7 7.2.4.7 I1.5ND B1Dimensions (outline)1.2.3.1S-44ND B2Robustness of terminations Solderability (without ageing) Climatic sequence 1.2.6.1 1.2.6.2 1) 1.2.6.8 7.2.6.2 1) and 2) 7.2.6.8 S-34D B7Endurance (48 h) To be applied only in the event of a batch failure in Subgroup C5 1.2.77.2.7S-41.5D C1Dimensions (detail) Temperature coefficient and cyclic drift Short term stability Solderability (with ageing) 1.2.3.2 1.2.4.10 1.2.4.12 1.2.6.2 1) 7.2.4.12 7.2.6.2 1) S-36.5D C3Damp heat, steady state1.2.6.97.2.6.9S-36.5D C4Dry heat Insulation resistance (at upper category temperature) 1.2.6.8 2) 1.2.4.7 7.2.6.8 2) 7.2.4.7 S-44ND C5Endurance (2 000 h) Damp heat (accelerated) 2 cycles -/-/56 and -/-/21 to be conducted before final measurements of the endurance test 1.2.7 1.2.6.8 6) 7.2.7 7.2.6.8 6)S-34D Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:29:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9070 N003:1971 © BSI 01-20005 Table 3 Inspection schedule SubgroupTitle of test BS 9070 Subclause numbers Inspection level AQL (%) Destructive (D) or non-destructive (ND) Section 1Section 7 D0Initial measurementsTable 1 of Section 7 ND D1(1) 50 % of the specimens Robustness of terminations Resistance to soldering heat (2) Other 50 % of the specimens Vibration Visual examination Bump Visual examination (3) Specimens from (1) and (2) combined Rapid change of temperature Climatic sequence 1.2.6.1 1.2.6.2 2) 1.2.6.7 1.2.6.4 1.2.6.3 1.2.6.8 7.2.6.2 3) 7.2.6.7 7.2.6.3 7.2.6.8 S-34D D2(i)Endurance (2 000 h) Damp heat (accelerated) (2 cycles -/-/56 and -/-/21) to be conducted before the final measurements of the endurance test 1.2.7 1.2.6.8 6) 7.2.7 7.2.6.8 6)S-34D D2(ii)Not applicable D3Mould growth1.2.6.127.2.6.12S-34D NOTE 1Samples subjected to tests marked “D” shall not be accepted for release under BS 9000 (see 2.6.5 of BS 9000). NOTE 2Where a subgroup contains more than one test they shall be carried out in the order given in the table. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 02:29:28 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 9070 N003:1971 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. 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