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COMPONENTS FOR LOW-VOLTAGE SURGE PROTECTIVE DEVICES - SPECIFICATIONS FOR AVALANCHE BREAKDOWN DIODE (ABD)

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-01-2002

Publisher

National Standards Authority of Ireland

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For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.

Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

1 Scope
2 Normative references
3 Definitions and symbols
4 Basic function and description for ABDs
5 Service conditions
6 Standard test methods and procedures
   6.1 Standard design test criteria
   6.2 Test conditions
   6.3 Clamping voltage V[c] (see figure 2)
   6.4 Rated peak impulse current I[PPM] (see figure 2)
   6.5 Maximum working voltage V[WM] and maximum working
        r.m.s. voltage V[WM[rms]] (see figure 3)
   6.6 Stand-by current I[D] (see figure 3)
   6.7 Breakdown (avalanche) voltage V[BR] (see figure 4)
   6.8 Capacitance C [j]
   6.9 Rated peak impulse power dissipation P[PPM]
   6.10 Rated forward surge current I[FSM] (see figure 1c)
   6.11 Forward voltage V[FS]
   6.12 Temperature coefficient of breakdown voltage alpha
        V[BR]
   6.13 Temperature derating (see figure 5)
   6.14 Thermal resistance R[thJA] or R[thJC] or R[thJL]
   6.15 Transient thermal impedance Z[thJA] or Z[thJC] or
        Z[thJL]
   6.16 Rated average power dissipation P[MAV]
   6.17 Peak overshoot voltage V[OS] (see figure 7)
   6.18 Overshoot duration (see figure 7)
   6.19 Response time (see figure 7)
7 Fault and failure modes
   7.1 Degradation fault mode
   7.2 Short-circuit failure mode
   7.3 Open-circuit failure mode
   7.4 'Fail-safe' operation
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications
Figures

Applies to avalanche breakdown diodes (ABDs) which represent one type of surge protective device component (hereinafter referred to as SPDC) used in the design and construction of surge protective devices connected to low-voltage power distribution systems, transmission, and signalling networks.

DevelopmentNote	For CENELEC adoptions of IEC publications, please check www.iec.ch to be sure that you have any corrigenda that may apply. (01/2017)
DocumentType	Standard
Pages	44
PublisherName	National Standards Authority of Ireland
Status	Current

Standards	Relationship
BS EN 61643-321:2002	Identical
DIN EN 61643-321 : 2003	Identical
UNE-EN 61643-321:2003	Identical
IEC 61643-321:2001	Identical
NBN EN 61643-321 : 2002	Identical
EN 61643-321:2002	Identical
NF EN 61643-321 : 2002	Identical