Is the WLCSP package of nRF54L15-CAAA a glass package?

[Xingbo Xu]

Hi Dear

Is the WLCSP package of nRF54L15-CAAA a glass package?

Is it similar to the WLCSP package of 52832-CIAA?

The above refers to the molding material.

If possible, please provide some information about the WLCSP packaging material of this product.

Thank you!

[SwRa]

Hello,

The WLCSP packages are bare die packages, so there is no packaging material on the chip.

Regards,

Swathy

[Xingbo Xu]

Hello，

I still want to have a detailed understanding. Could you please help confirm whether the wlcsp package of nRF54L15-CAAA-R is the same as that of the nRF52832-CIAA-R? Because the nRF52832-CIAA had a layer of black film, and during the production and soldering process, there was a case of the film peeling off, resulting in light transmission and leakage current.

[steamtannen]

From what I know, the nRF54L15 WLCSP(Snow Rider 2) doesn’t use the same black film layer that the nRF52832-CIAA had, but to be sure, it’s best if Nordic can confirm whether the surface structure is identical. Since we had issues with the 52832 film peeling and causing light-induced leakage, we’d like detailed info on the 54L15 die surface to verify this. Could you help confirm?

[SwRa]

Hello,

I will check this with experts and get back to you.

Regards,

Swathy

[Xingbo Xu]

Hi，

OK，thank you for your time.