TCAN1042-Q1: Terminal resistor package size confirm

Jessica Wu74

Part Number: TCAN1042-Q1

Hi Team,

Could you please kindly help to check for TCAN1042 terminal resistor as below R7 and R15 shows, why a 0805 package size resistor is needed here? What would be the maximum power through these resistor? Thanks a lot for your support to check.

Best regards

Jie

9 months ago

0 Clemens Ladisch 9 months ago

Guru 283370 points

Typical current is about 20 mA (so about 25 mW in each split termination resistor), but this can become larger if a bus line is shorted to a supply.

0 Eric Schott1 9 months ago

TI__Guru 50795 points

Thanks Clemens!

Hi Jie,

You can reference the thread linked below for more information on CAN termination resistor sizing:
https://e2e.ti.com/support/interface-group/interface/f/interface-forum/986855/tcan1042h-q1-the-power-rating-needed-for-the-termination-resistor

Let me know if you have any more questions.

Regards,
Eric Schott

Because of the holidays, TI E2E™ design support forum responses will be delayed from Dec. 25 through Jan. 2. Thank you for your patience.

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TCAN1042-Q1: Terminal resistor package size confirm