For the difference between the parts 560L104YTRN and 560L104YTRD from Kyocera AVX, see the below information:
560L104YTRN → RN is an old part number for horizontal 4000pc T&R - the new PN is 560L104YTT/4K for 4000pcs T&R
560L104YTRD → RD is an old part number for horizontal 500pc T&R - the new PN is 560L104YTT/500 for 500pcs T&R
Applicable Part Numbers
1284-1880-2-ND
1284-1880-1-ND
1284-1880-6-ND
560L104YTRD-ND