Technics MT5634SMI-92 manual Safety, SocketModem Global MT5634SMI Developer’s Guide, Telecom

Appendix B – Product Approvals, Design Considerations, Regulatory Information

EMC

Surface mount ferrites are used on T&R (Tip and Ring) to mitigate emission levels out the RJ-11 cable. 220pF capacitors are also used on T&R to reduce the common mode emissions that may be present in certain systems. The ferrite and capacitors also aid in reducing the effects of transients that may be present on the line.

Recommended Sidactor

Manufacturer – Teccor Electronics – Part # - P#3100SA

Manufacturer – ST Microelectronics -- Part 1 – SMP100-270

Recommended Ferrite (SMT)

Manufacturer – Associated Component Technology (ACT) – Part # - YCB-1206

Manufacturer – Murata Erie – Part # - BLM31A601SPT

Recommended Ferrite (Thru-Hole)

Manufacturer – Associated Component Technology (ACT) – Part # - WB2-2.OT

Recommended Capacitor

Manufacturer – Murata Erie – Part # - GHM3045X7R221K-GC (Surface mount device) and Part # - DE0807B221K-KH (Thru-hole device)

Manufacturer – Ever Grace Electronic Industrials -- Part # - YP221K2EA7PS Note: The capacitors used on T&R must have a Y2 safety rating.

Telecom

The RJ-11 connector must meet FCC Part 68 requirements. Refer to FCC Part 68 section 68.500 subpart F for connector specifications. A self-healing fuse is used in series with line to help prevent damage to the DAA circuit. This fuse is needed for FCC Part 68 compliance.

Recommended Connector

Manufacturer – Stewart – Part # - SS-6446-NF-A431

Recommended Fuse

Manufacturer – RayChem –Part # - TR600-150, TS600-170, or TS600-200

Note: The fuse is also needed to meet UL1950 3rd edition protection against over-voltage from power line crosses.

Common Mode Choke

Manufacturer – TDK – Part # - ZJYS51R5 – 2PT

Safety

All creepages and clearances for the MT5634SMI have been designed to meet requirements of safety standards EN60950 and IEC950. The requirements are based on a working voltage of 250V. When the recommended DAA circuit interface is implemented in a third party design all creepage and clearance requirements must be strictly adhered to. The third party safety design must be evaluated by the appropriate national agency per the required specification.

User accessible areas: Based on where the third party design is to be marketed/sold or used, it may be necessary to provide an insulating cover over all TNV exposed areas. Consult with the recognized safety agency to determine the requirements.

Notice: Even if the recommended design considerations are followed, there are no guarantees that a particular system will comply with all the necessary regulatory requirements. It is imperative that specific designs be completely evaluated by a qualified/recognized agency.

Note: All safety notices must be added to any User Guide that you produce.

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