IPC-7251 Naming Convention for Resistors Axial Diameter  RESAD Horizontal Mounting

RESAD + Lead Spacing + W + Lead Width + L + Body Length + D + Body Diameter – Standoff Height – Lead Length

Example:

RESAD800W55L650D230-100-300_SEI_CF14_CFM12

RESAD – Through Hole Resistors Axial Diameter Horizontal Mounting
800 – Lead Spacingl = 8.00mm
W55 – Lead Width = 0.55mm
L650 – Body Length = 6.50mm
D230 – Body Diameter = 2.30mm
100 – Standoff Height = 1.00mm
300 – Lead Length = 3.00mm
SEI – Manufacturer Name (Added by PCB-3D.com)
CF14_CFM12 – Manufacturer Code, Package Name or Package Code (Added by PCB-3D.com)