CC1310: EOL capacitor alternatives

Gary Witulski

Part Number: CC1310

Murata announced EOL on the follow capacitors, and possible other ones, that are used in the CC1310 reference design for the VDDS_DCDC and DCOUPL pin decoupling.

GRM188R71E104KA01D - CAPACITOR, CERAMIC X7R, 100nF, 25V, -10%/+10%, -55DEGC/+125DEGC, 0603, SMD

GRM155R61A105KE15D - CAPACITOR, 0402 1UF 10VOLTS X5R 10%

I am concerned that there are specific requirements for these capacitors that may impact the operation of the 1310.

Are there TI approved alternatives for these?

Does GRM188R71E104KA01D need to be rated at 25V?

Does GRM155R61A105KE15D need to be 1uF?

over 7 years ago

0 Severin Suveren over 7 years ago

TI__Mastermind 23730 points

Hi Gary,

I will be looping in a HW expert who will be available tomorrow. Sorry for keeping you waiting.

0 TER over 7 years ago in reply to Severin Suveren

TI__Guru**** 317180 points

- The max voltage for the nodes where caps are connected is the same as VDDS meaning that the cap spec could be lower than 25 V. As an example 6.3 V could be used.
- Yes, the caps have to have the values given in the ref design. The 1 uF cap is decoupling for an internal regulator meaning that using a different value for this could cause instability for the regulator.

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CC1310: EOL capacitor alternatives