NDK12-4.000 CRYSTAL 4.0000MHZ SMT NDK12-4.000 is a high-performance crystal component that operates at a frequency of 4MHz with a frequency stability of nan.Features equivalent series resistance (ESR) of nan. Compact dimensions: length nan, width nan, and height nan. Supports a temperature range of nan for reliable performance. Manufactured by OEM with compliance to ROHS standards. Packaged as TAPE&REEL for convenience.