SIBA Miniature Fuses Sizes: - Cylindrical fuses: x · . x · x x · x · x x · x · x x mm - Radial lead pin fuses: KS, ? . mm - SMD fuses: Voltage ratings: V - kV Operation class: F fast acting T time lag M medium time lag FF very fast acting TT long time lag Standards: IEC DIN VDE CEE UL - UL CSA-C. No. . -