antenna circuit capacitor tolerances

[FredNovalia]

Hi,

Our manufacturer would like to change the recommended capacitors on the nRF51822 antenna circuit design. Here is the query:

Please check below 3 capacitors request +/-0.1pF , which are not regular/popular spec., not only the price will be 2 or 3 times higher, but also the lead-time will be longer at least 6 weeks up. Can you use/accept +/- 0.25pF tolerance ? 2.2pF MULTICOMP MCHH15N2R2B500LT Capacitor, NP0, ±0.1pF 1.5pF MULTICOMP MCHH15N1R5B500LT Capacitor, NP0, ±0.1pF 1.0pF MULTICOMP MCHH15N1R0B500LT Capacitor, NP0, ±0.1pF

What would be the risks in changing those tolerances? Could you suggest some alternative capacitors, cheaper and readily available?

Thanks for your help,

Fred

[FredNovalia]

Thanks for the advice. We will go into full production (>10000) but hopefully we will get a test batch from the manufacturer.