从China供应商批发进口21.4 Mhz Crystal Filter 6pads/4pads — FOB条款

This 21.4 MHz crystal filter is a precision RF component designed for narrowband communication applications. The filter operates at a center frequency of 21.4 MHz with a passband of ±7.5 kHz measured at the 3dB cutoff points, providing selective filtering for intermediate frequency stages in communications equipment. The package style is 7x5 mm with either 4-pad or 6-pad configurations, and the filter delivers a stopband attenuation of ±25.0 kHz at 35 dB rejection, effectively suppressing out-of-band signals.

The filter features a 6-pole design with a ripple specification of 1.0 dB across the passband and maximum insertion loss of 2.5 dB. The terminating impedance is specified as 1500 Ohms in parallel with 0.5 pF, with a coupling capacitance of 5 pF between filter sections. These specifications make this filter suitable for high-selectivity IF filtering in HF and VHF receivers, test equipment, and frequency synthesizers where narrowband performance is critical.

This type of crystal filter is typically purchased by electronics manufacturers building communication transceivers, radar systems, and test instrumentation. The product is sourced as a catalog item with standard specifications suitable for most commercial and industrial RF applications. Importers should verify termination impedance matching and confirm the pad configuration (4-pad versus 6-pad) matches their PCB layout requirements.

Chengdu Xtalong Electronics Co., Ltd is an electronics component supplier based in Chengdu, Sichuan Province, China, with their registered address at No.4 Xinhang Road, West of High-Tech Zone, Chengdu City 611731. The supplier operates from a manufacturing base in China's Sichuan province, a region known for electronics manufacturing clusters. The company's trust tier is listed as 'harbor', and they specialize in frequency control components including crystal filters, oscillators, and related RF components.

The listing does not provide information about company headcount, annual revenue, years in operation, or specific certifications. Response rate and average response hours are not disclosed on the listing, so buyers should expect to initiate direct contact to confirm responsiveness and technical support capabilities. The product listing presents standard catalog specifications for this crystal filter model without additional customization options noted.