AS-20.000-30-EXT-SMD-TR CRYSTAL 20MHZ HC49SMT 30PF SMD TR AS-20.000-30-EXT-SMD-TR is a high-performance crystal component that operates at a frequency of 20MHz with a frequency stability of ±50PPM.Features equivalent series resistance (ESR) of 40 Ohms. Compact dimensions: length 13.50mm, width 4.70mm, and height 4.60mm. Supports a temperature range of -40°C~+85°C for reliable performance. Manufactured by RALTRON with compliance to ROHS standards. Packaged as TAPE&REEL for convenience.