P3602ACMC datasheet(104/212 Pages) TECCOR

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SIDACtor® Data Book and Design Guide

Additional T1 Design Considerations

A T1 application can be TIA-968 approved as two different possible device types. An XD

device means an external CSU is used and the unit does not have to meet the

TIA-968 environmental test conditions, but it must connect only behind a separately

registered DE device. This XD equipment does not have to meet the T1 pulse template

requirements. If not classified as an XD device, then typically the application must adhere to

TIA-968 environmental test conditions.

T3 Protection

The capacitance across the pair of wires = (D1 || D2) + P0640EC/SC. The diode

capacitance is approximately (10 pF || 10 pF) 20 pF. Then adding the capacitive effect of

the P0640EC/SCMC, which is typically 60 pF, the total capacitance across the pair of wires

is approximately 15 pF. The MUR 1100E diodes are fast-switching diodes that will exhibit

this level of capacitance. MURS160T3 is a surface mount equivalent. (Figure 3.18)

Figure 3.18 T3 Protection

Alternately, the advanced P0642SA exhibits very low capacitance and can be used as a

stand-alone device.

Figure 3.19 Alternate T3 Protection

P0640EC/SC MC or

P0720EC/SC MC

F1250T

P0642SA

P3602ACMC 데이터시트(PDF) 104 Page - Teccor Electronics