MCF45M15A/SM756

Overview

The YIC MCF45M15A/SM756 is a surface-mount monolithic crystal filter designed for intermediate frequency applications. It operates at a center frequency of 45 MHz with a bandwidth of 15 kHz. The component features an insertion loss of 4 dB and a nominal impedance of 560 Ohms. It is housed in a compact 6-SMD, no-lead package measuring 7 x 5 x 1.3 mm.

Feature Summary

• Monolithic construction for high reliability
• Surface mount design for automated assembly
• Fixed 45 MHz center frequency response

Applications

• Intermediate frequency filtering in communication receivers
• Signal processing in analog radio systems
• Band selection in RF front-end modules

Procurement Notes

Verify the specific suffix SM756 to confirm the 560 Ohm impedance variant, as other suffixes may indicate different electrical characteristics. Ensure the 6-SMD no-lead package footprint matches the PCB layout. Confirm the 4 dB insertion loss requirement fits the system budget before ordering.

Selection Notes

Select this component when a 45 MHz IF filter with 15 kHz bandwidth is required. Compare the 560 Ohm impedance against circuit requirements; alternative models like the MCF45M15B/SM756 offer 800 Ohms. Consider the 4 dB insertion loss impact on signal strength relative to lower-loss alternatives.

Part Context

This part belongs to the YIC MCF-SM756 series of SMD crystal filters. It shares the same physical dimensions and center frequency with variants such as MCF45M15B/SM756 but differs in impedance and insertion loss specifications. The series provides standardized footprints for various impedance needs.

Replacement Considerations

The MCF45M15B/SM756 is a direct mechanical substitute within the same series but has 800 Ohms impedance and 3 dB insertion loss. Verify if the circuit can tolerate the impedance change from 560 to 800 Ohms. No other cross-brand substitutes are confirmed in public documentation.