1. FB160808T-800Y-S-1 Substitution Conclusion The FB160808T-800Y-S-1 is fully compatible with the original part WLBD1608K2U800TP in key electrical parameters (impedance 80Ω @ 100MHz, rated current 600mA, DCR ≤ 100mΩ) and mechanical dimensions (0603 package, 1.60mm × 0.80mm × 0.95mm), making it a viable direct replacement. The only identified difference is that the FB160808T-800Y-S-1 is marked with “Filter Type: Signal Line,” while the original part does not specify a type. This suggests the substitute may be optimized for signal line filtering applications (e.g., in its high‑frequency response characteristics). However, given the matching general specifications, this distinction typically does not affect its noise suppression performance in common circuits. For practical substitution, it is recommended to verify that the impedance curve aligns fully within the target frequency band.