Hello, can the CO2520-25.000-1.8-50-EXT-T-TR replace the model CO2520-25.000-1.8-15-TR-NS1? Are ther

@zhangwei Welcome to DigiKey TechForum!

Unfortunately, we don’t have any information to interprete the part number CO2520-25.000-1.8-15-TR-NS1, but the post below may help.

  1. Raltron Oscillator Part Numbering System & Suffixes - Passives / Crystals-Oscillators-Resonators - DigiKey TechForum - An Electronic Component and Engineering Solution Forum
  2. Raltron CL2520-156.250-1.8-20-X-T-TR-N1 Suffix Meaning - Passives / Crystals-Oscillators-Resonators - DigiKey TechForum - An Electronic Component and Engineering Solution Forum

I think, CO2520-25.000-1.8-15-TR-NS1 will have tighter frequency tolerance(±15ppm) and rise/fall time(1.0ns @20~80%) comparing CO2520-25.000-1.8-50-EXT-T-TR which has ±50ppm and 10ns @10~90%. Thus, if your system allows this frequency tolerance and rise/fall time, CO2520-25.000-1.8-50-EXT-T-TR could replace it.

Best regards,