GB/T 6346.14-2023Fixed capacitors for use in electronic equipment - Part 14: Sectional specification--Fixed capacitors for electromagnetic interference suppression and connection to the supply mains (English PDF)

Foreword

This document is drafted in accordance with the rules provided in GB/T 1.1-2020

Directives for standardization - Part 1.Rules for the structure and drafting of

standardizing documents.

This document is part 14 of GB/T 6346, Fixed capacitors for use in electronic

equipment. The following parts have been issued for GB/T 6346.

-- Part 1.Generic specification;

-- Part 2.Sectional specification - Fixed metalized polyethylene-terephthalate film

dielectric d.c. capacitors;

-- Part 2-1.Blank detail specification - Fixed metallized polyethylene-terephthalate film

dielectric d.c. capacitors - Assessment levels E and EZ;

-- Part 3.Sectional specification - Surface mount fixed tantalum electrolytic capacitors

with manganese dioxide solid electrolyte;

-- Part 3-1.Blank detail specification - Surface mount fixed tantalum electrolytic

capacitors with manganese dioxide solid electrolyte - Assessment level EZ;

-- Part 4.Sectional specification - Aluminium electrolytic capacitors with solid and non-

solid electrolyte;

-- Part 4-1.Blank detail specification - Aluminium electrolytic capacitors with non-

solid electrolyte - Assessment level E;

-- Part 5.Sectional specification. Fixed mica dielectric d.c. capacitors with a rated

voltage not exceeding 3 000 V - Selection of methods of test and general

requirements;

-- Part 5-1.Blank detail specification. Fixed mica dielectric d.c. capacitors with a rated

voltage not exceeding 3 000 V - Assessment level E;

-- Part 6.Sectional specification. Fixed metallized polycarbonate film dielectric d.c.

capacitors;

-- Part 6-1.Blank detail specification. Fixed metallized polycarbonate film dielectric

d.c. capacitors - Assessment level E;

-- Part 7.Sectional specification. Fixed polystyrene film dielectric metal foil d.c.

capacitors;

-- Part 7-1.Blank detail specification. Fixed polystyrene film dielectric metal foil d.c.

capacitors - Assessment level E;

-- Part 8.Sectional specification. Fixed capacitors of ceramic dielectric, Class 1;

-- Part 8-1.Blank detail specification. Fixed capacitor of ceramic dielectric, Class 1 -

Assessment level EZ;

-- Part 9.Sectional specification. Fixed capacitors of ceramic dielectric, Class 2;

-- Part 9-1.Blank detail specification. Fixed capacitor of ceramic dielectric, Class 2 -

Assessment level EZ;

-- Part 11.Sectional specification. Fixed polyethylene-terephthalate film dielectric

metal foil D.C. capacitors;

-- Part 11-1.Blank detail specification. Fixed polyethylene-terephthalate film dielectric

metal foil d.c. capacitors - Assessment level EZ;

-- Part 13.Sectional specification - Fixed polypropylene film dielectric metal foil d.c.

capacitors;

-- Part 13-1.Blank detail specification - Fixed polypropylene film dielectric metal foil

d.c. capacitors - Assessment level E and EZ;

-- Part 14.Sectional specification - Fixed capacitors for electromagnetic interference

suppression and connection to the supply mains;

-- Part 14-1.Blank detail specification - Fixed capacitor for electromagnetic

interference suppression and connection to the supply mains - Assessment level DZ;

-- Part 15.Sectional specification - Fixed tantalum capacitors with non-solid or solid

electrolyte;

-- Part 15-1.Blank detail specification - Tantalum capacitors with solid electrolyte and

foil electrode - Assessment level E;

-- Part 15-2.Blank detail specification - Fixed tantalum capacitors with solid electrolyte

sintering - Assessment level E;

-- Part 15-3.Blank detail specification - Fixed tantalum capacitors with solid electrolyte

and porous anode - Assessment level E;

-- Part 16.Sectional specification - Fixed metallized polypropylene film dielectric d.c.

capacitors;

-- Part 16-1.Blank detail specification. Fixed metallized polypropylene film dielectric

d.c. capacitors - Assessment levels E and EZ;

-- Part 17.Sectional specification - Fixed polypropylene film dielectric a.c. and pulse

capacitors;

-- Part 17-1.Blank detail specification - Fixed metallized polypropylene film dielectric

a.c. and pulse capacitors - Assessment levels E and EZ;

-- Part 18.Sectional specification - Fixed aluminium electrolytic chip capacitors with

solid (MnO2) and non-solid electrolyte;

-- Part 18-1.Blank detail specification - Fixed aluminium electrolytic chip capacitors

with solid (MnO2) and non-solid electrolyte - Assessment level EZ;

-- Part 18-2.Blank detail specification - Fixed aluminium electrolytic chip capacitors

with non-solid electrolyte - Assessment level E;

-- Part 19.Sectional specification - Fixed metallized polyethylene-terephthalate film

dielectric surface mount d.c. capacitors;

-- Part 19-1.Blank detail specification - Fixed metallized polyethylene-terephthalate

film dielectric surface mount d.c. capacitors - Assessment level EZ;

-- Part 21.Sectional specification. Fixed surface mount multilayer capacitors of ceramic

dielectric class 1;

-- Part 21-1.Blank detail specification. Fixed surface mount multilayer capacitors of

ceramic dielectric class 1 - Assessment level EZ;

-- Part 22.Sectional specification. Fixed surface mount multilayer capacitors of ceramic

dielectric class 2;

-- Part 22-1.Blank detail specification. Fixed surface mount multilayer capacitors of

ceramic dielectric class 2 - Assessment level EZ;

-- Part 24.Sectional specification - Fixed tantalum electrolytic surface mount capacitors

with conductive polymer solid electrolyte;

-- Part 25.Sectional specification - Fixed aluminium electrolytic surface mount

capacitors with conductive polymer solid electrolyte;

-- Part 25-1.Blank detail specification - Surface mount fixed aluminum electrolytic

capacitors with conductive polymer solid electrolyte - Assessment level EZ;

-- Part 26.Sectional specification - Fixed aluminium electrolytic capacitors with

conductive polymer solid electrolyte;

-- Part 26-1.Blank detail specification - Fixed aluminium electrolytic capacitors with

conductive polymer solid electrolyte - Assessment level EZ.

This document replaces GB/T 6346.14-2015, Fixed capacitors for use in electronic

equipment - Part 14.Sectional specification - Fixed capacitors for electromagnetic

interference suppression and connection to the supply mains. Compared with GB/T

6346.14-2015, except for structural adjustment and editorial changes, the main

technical changes are as follows.

-- CHANGE d.c. voltage between mains applicable to capacitors from 1 000 V to 1 500

V (see 1.1; 1.1 of the 2015 edition);

-- ADD "The overvoltage categories in combination with the a.c. mains voltages for the

capacitors classified in this document shall be taken from IEC 60664-1" (see 1.2);

-- ADD the markings a.c. and d.c. for alternating current and direct current respectively

(see 1.6);

-- REMOVE capacitor of Class X3 and capacitor of Class Y3 (see 1.5.3 and 1.5.4 of

the 2015 edition);

-- CHANGE the maximum rated voltage (a.c.) for capacitor of Class Y2 from 300 V to

500 V (see 1.7.2 and Table 10; 1.5.4 and Table 10 of the 2015 edition);

-- CHANGE the peak impulse voltage applied before endurance test of Y2-capacitors

to be divided according to the nominal capacitance (see 1.7.2; 1.5.4 of the 2015

edition);

-- CHANGE the flame retardance category permitted from the minimum category C to

the preferred category B, and to category C for components smaller than 1 750 mm3

(see 2.2.6 and 4.17; 2.2.6 and 4.17 of the 2015 edition);

-- ADD rated voltage, rated temperature, and flame retardant requirements for sleeving,

tape, tubing and wire insulation (see 2.3);

-- ADD provisions for grouping ceramic capacitors according to relative permittivity in

sampling (see 3.4.3.1);

-- DELETE the provisions of assessment level D (see Table 4, Table 5, Table 7 and

Table 8 of the 2015 edition);

-- CHANGE the voltage -- if a d.c. test voltage is used instead of a.c. for Y-capacitors -

- from 1.8 times to 1.5 times (see 3.5; 3.5 of the 2015 edition);

-- CHANGE the interval for re-inspection in the case of delayed delivery from not

exceeding 3 months to not exceeding 3 years (see 3.5.3; 3.5.3 of the 2015 edition);

-- CHANGE part of the creepage distances and clearances of Y1- and Y2-capacitors

(see Table 9; Table 9 of the 2015 edition);

-- CHANGE the test conditions for the withstanding voltage test (see Table 10; Table

10 of the 2015 edition);

-- ADD supplementary provisions for the measuring frequency of ceramic capacitors

(see 4.2.3);

-- ADD the provision "When preconditioning is performed, initial measurements shall

be carried out after preconditioning" (see 4.4, 4.6, 4.8.2, 4.9.2, 4.13.1, 4.15.1);

-- ADD specific provisions on the test conditions of damp heat, steady state (see 4.12.2);

-- ADD provisions for the fuse in the endurance test (see 4.14.1);

-- ADD the requirement that the case temperature of the capacitor shall be measured for

RC units with specified rated temperature in the endurance test (see 4.14.3);

-- CHANGE the impulse voltage of capacitor endurance test (see 4.14.3 and 4.14.4;

1 General

The following documents, in whole or in part, are normatively referenced in this

document and are indispensable for its application. For dated references, only the

edition cited applies. For undated references, the latest edition of the referenced

document (including any amendments) applies.

2 Preferred ratings and characteristics

The preferred values of rated voltage are 125 V, 250 V, 275 V, 400 V, 440 V, 500 V, 760

V and 1 000 V.

Preferred values of nominal resistance shall be taken from the E6 series of IEC 60063.

3 Assessment procedures

One of the complete series of tests indicated in Tables 3, 4 or 5 is required for the

approval of capacitors of a single rated voltage covered by one detail specification. The

tests of each group shall be carried out in the order given.

The conditions of test and performance requirements for the fixed sample size schedule

should be identical to those prescribed in the detail specification for the quality

conformance inspection.

4 Test and measurement procedures

This clause supplements the information given in IEC 60384-1.2016, Clause 4.

AC tests carried out at a frequency of 50 Hz ~ 100 Hz are considered valid for any

nominal frequency of 50 Hz ~ 100 Hz. In case of doubt, 50 Hz shall be the reference

frequency for measurements.

Annex A

(Normative)

Circuit for the impulse voltage test

It has to be pointed out that the 1.2/50 pulse shape in equipment standards, e.g. in IEC

60065.2014, Annex K and in IEC 60950-1.2005, Annex N, is defined under open circuit

conditions, and different shape is accepted in under load conditions.

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