SIDACtor® Data Book
Table of Contents
On-hook Impedance Limitations ..................................................................................................................4-20
On-hook Impedance Measurements ............................................................................................................4-20
UL 1459 2nd Edition .............................................................................................................................................4-21
Overview ......................................................................................................................................................4-21
UL 1459 .......................................................................................................................................................4-21
Over-Voltage Tests ......................................................................................................................................4-21
Failure Modes ..............................................................................................................................................4-22
UL 1950 3RD Edition/CSA C22.2 No. 950-95 ......................................................................................................4-24
Overview ......................................................................................................................................................4-24
UL 1950 .......................................................................................................................................................4-24
Over-Voltage Flowchart ...............................................................................................................................4-24
Over-Voltage Test Procedures ....................................................................................................................4-25
Over-Voltage Test Compliance ....................................................................................................................4-26
Special Considerations Regarding the SIDACtor and UL 1950. ..................................................................4-26
UL 497 ..................................................................................................................................................................4-29
UL 497 Series of Safety Standards ..............................................................................................................4-29
Overview ......................................................................................................................................................4-29
Construction and Performance ....................................................................................................................4-29
Performance Tests .......................................................................................................................................4-29
UL 497A ...............................................................................................................................................................4-32
Overview ......................................................................................................................................................4-32
Construction and Performance ....................................................................................................................4-32
Performance Tests .......................................................................................................................................4-33
Test Compliance ..........................................................................................................................................4-33
UL 497B ...............................................................................................................................................................4-35
Overview ......................................................................................................................................................4-35
Construction and Performance ....................................................................................................................4-35
Performance Requirements Specific to the SIDACtor .................................................................................4-35
Regulatory Compliant Solutions ...........................................................................................................................4-37
Overview ......................................................................................................................................................4-37
GR 1089 and ITU-T K.20 and K.21 ..............................................................................................................4-38
FCC Part 68 and UL 1459/UL 1950 .............................................................................................................4-39
FCC Part 68 Operational Solution and UL 1459/UL 1950 ...........................................................................4-39
FCC Part 68 Non-Operational Solution and UL 1459/UL 1950 ...................................................................4-39
FCC Part 68 and UL 1950 ...........................................................................................................................4-40
FCC Part 68 Only .........................................................................................................................................4-40
Surge Waveforms for Various Standards .............................................................................................................4-41
Technical Notes
5-1
Construction and Operation ...................................................................................................................................5-3
Overview ........................................................................................................................................................5-3
Key Parameters .............................................................................................................................................5-3
Operation .......................................................................................................................................................5-3
Physics ...........................................................................................................................................................5-4
SIDACtor Selection Criteria ....................................................................................................................................5-5
Off-state Voltage (VDRM) ..............................................................................................................................5-5
Switching Voltage (VS) ..................................................................................................................................5-5
Peak Pulse Current (IPP) ...............................................................................................................................5-5
Holding Current (IH) .......................................................................................................................................5-6
Off-State Capacitance (CO) ...........................................................................................................................5-6
Fuse Selection Criteria ...........................................................................................................................................5-7
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