Appendix B – Product Approvals, Regulatory Design Considerations, Compliance

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.

Recommended Connector

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

Recommended Fuse

Manufacturer – RayChem – Part # - TR600-150

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

Recommended Sidactor

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

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

Recommended Transceiver

Manufacturer – Analog Devices – Part # - ADM207EAR

Safety

All creepages and clearances for the MT2456SMI have been designed to meet requirements of safety standards EN 60950. 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.

Multi-Tech Systems, Inc. MT2456SMI-22 SocketModem Developer’s Guide

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Multi-Tech Systems MT2456SMI22 manual Safety