BS EN 61643-321:2002
Current
The latest, up-to-date edition.
Low voltage surge protective devices Specifications for avalanche breakdown diode (ABD)
Hardcopy , PDF
English
03-21-2002
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
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