ECS-250-18-23A-EN-TR CRYSTAL 25MHZ 18PF SMD ECS INC. ECS-250-18-23A-EN-TR is a high-performance crystal component that operates at a frequency of 25MHz with a frequency stability of ±50PPM.Features equivalent series resistance (ESR) of 30 Ohms. Compact dimensions: length 6.00mm, width 3.50mm, and height 1.10mm. Supports a temperature range of -40°C~+85°C for reliable performance. Manufactured by ECS with compliance to ROHS standards. Packaged as TAPE&REEL for convenience.