ECEC Products

When selecting ECEC timing components, consider: 1) Component type - crystal resonators for cost-sensitive applications with external oscillator circuits, crystal oscillators for guaranteed startup and simplified design. 2) Frequency requirements - match your system clock exactly, common frequencies include 32.768kHz, 8MHz, 12MHz, 16MHz, 24MHz, 48MHz. 3) Package size - HC-49/S for through-hole, SMD 2.0x1.6mm to 7.0x5.0mm for surface mount. 4) Frequency tolerance - ±10ppm to ±50ppm depending on accuracy needs. 5) Operating temperature - commercial (0 to +70C) or industrial (-40 to +85C). 6) Special features - TCXO for temperature stability, VCXO for voltage control. Contact our FAE team for selection assistance.

Browse our ECEC timing component categories or contact our technical team for application-specific recommendations.

HC-49/S is a through-hole cylindrical metal package, typically 11.0x4.7mm in size. It offers excellent mechanical stability and is suitable for applications requiring through-hole mounting. SMD (Surface Mount Device) packages are compact rectangular ceramic packages ranging from 2.0x1.6mm to 7.0x5.0mm. SMD packages are ideal for automated assembly and space-constrained applications. Key differences: HC-49/S - Larger size, through-hole mounting, excellent stability, lower cost. SMD - Compact size, automated assembly compatible, various sizes available, slightly higher cost. Choose HC-49/S for cost-sensitive through-hole designs. Choose SMD for compact, automated assembly applications.

Choose HC-49/S for through-hole designs and cost optimization. Choose SMD packages for compact, automated assembly applications.

Frequency tolerance requirements depend on application: ±10ppm - High-precision applications like GPS, telecom, and networking equipment. ±20ppm - Standard precision for most consumer electronics and industrial applications. ±30ppm - General purpose applications with moderate accuracy requirements. ±50ppm - Cost-sensitive applications where basic timing is sufficient. Real-time clocks typically use 32.768kHz crystals with ±20ppm tolerance. USB applications usually require 12MHz or 48MHz with ±30ppm. Ethernet applications need 25MHz with ±50ppm or better. Microcontroller clocks vary based on UART baud rate requirements - ±30ppm is typically sufficient for standard baud rates.

Contact our FAE team to calculate the exact frequency tolerance required for your specific application.

TCXO (Temperature-Compensated Crystal Oscillator) offers significant advantages over standard XO: 1) Temperature stability - TCXO maintains frequency stability across temperature variations, typically ±0.5ppm to ±2.5ppm from -40C to +85C. 2) No external compensation needed - internal circuitry compensates for temperature effects. 3) Better overall accuracy - combines crystal stability with temperature compensation. 4) Simplified system design - no need for external temperature compensation circuits. Standard XO has frequency drift of ±20ppm to ±50ppm over temperature. TCXO is essential for applications requiring stable frequency in varying temperature environments like outdoor equipment, automotive, and industrial applications.

Use TCXO for applications requiring stable frequency across temperature variations. Use standard XO for stable temperature environments.

Lead times vary by product type and frequency: Standard frequencies (8MHz, 12MHz, 16MHz, 24MHz, 48MHz) in common packages: 1-2 weeks for stock items, 4-6 weeks for non-stock. 32.768kHz tuning fork crystals: Usually stock available, 1-2 weeks delivery. Custom frequencies: 6-8 weeks depending on quantity. TCXO/VCXO/OCXO: 4-6 weeks standard, 8-10 weeks for custom specifications. Automotive-grade products: 6-8 weeks due to additional testing. BeiLuo maintains inventory of popular ECEC frequencies for fast delivery. For critical projects, we can arrange buffer stock or scheduled deliveries.

Contact our sales team for current lead times and availability.