Voltage Rating of Capacitors on SJA1105SMBEVM

[ivan_kenetics]

I would like to find out the voltage rating of some of the capacitors mounted on SJA1105SMBEVM as the BOM is not available.

Can someone help to advise the voltage rating of the capacitors for the below location? Those capacitors are used in the 100Base-T1 connection.

C174, C175 (0.1uF)

C427 (4700pF).

[guoweisun]

The tolerance of the capacitors shall be within ±10% with max rating ≥50V.

[guoweisun · Accepted solution]

In the AH1706 of TJA1101 app note:

AC coupling
In Fig 11 AC coupling is realized by using 100nF coupling capacitors forming a high-pass
filter together with the termination of 50Ohm for each line.

The tolerance of the capacitors shall be within ±10% with max rating ≥50V.

[ivan_kenetics]

Would appreciate if NXP can advise the exact manufacturer part number or voltage rating of those cap. Open Alliance system implementation did mentioned that those capacitors should be => 50V for 12V system and =>100V for 24V system. But on TJA1101 Board, the 4700pF capacitor voltage rating is only 10V.