Mafi girma aikace-aikace na beryllium jan karfe gami ne a cikin lantarki da lantarki sassa, musamman maɓuɓɓuga, contactors, switches da relays.An yi amfani da shi azaman lamba a cikin kwamfutoci, kayan aikin fiber na gani na gani, kwasfa masu haɗa haɗaɗɗun allon kewayawa da allunan da aka buga (musamman wayoyi na jan ƙarfe na beryllium) da mota. Wayoyin hannu, kwamfyutocin kwamfyutoci da sauran kayan aikin IT sun fi nagartaccen tsari, wanda ke buƙatar ƙarami, mai sauƙi da sauƙi. ƙarin masu tuntuɓar masu ɗorewa.Wannan ya haifar da karuwar buƙatun abubuwan jan ƙarfe na beryllium.