ECS-45K30B

Overview

The ECS-45K30B is a monolithic crystal filter manufactured by ECS Inc. It operates at a nominal center frequency of 45 MHz with a 3 dB bandwidth of 35 kHz. The component features a terminating impedance of 1.2 kOhms and utilizes a four-pole design for effective signal filtering. It is housed in a through-hole package measuring 7.3 mm by 7.3 mm, suitable for surface mounting applications requiring precise narrowband filtering.

Feature Summary

• Monolithic crystal construction for stable performance
• Four-pole architecture for sharp selectivity
• Through-hole termination style

Applications

• Narrowband filtering in communication systems
• Intermediate frequency stages in receivers
• Signal processing circuits requiring 45 MHz selection

Procurement Notes

Verify the specific package dimensions and lead time requirements against current distributor listings before ordering. Confirm that the 1.2 kOhm impedance matches your circuit design needs. Ensure the operating temperature range of -20°C to +70°C aligns with your environmental specifications. Cross-reference the manufacturer part number with authorized suppliers to avoid counterfeit components.

Selection Notes

Select this component when a fixed 45 MHz center frequency with a 35 kHz bandwidth is required. The 1.2 kOhm impedance must match the source and load impedances of the surrounding circuitry. Consider the through-hole package size if PCB space allows for larger components compared to surface-mount alternatives.

Part Context

This part belongs to the monolithic crystal filter category from ECS Inc. These filters are designed to replace discrete LC networks, offering smaller size and better stability. The 45 MHz frequency is commonly used in amateur radio and industrial control applications for intermediate frequency processing.

Replacement Considerations

Check for direct substitutes with identical 45 MHz center frequency and 35 kHz bandwidth. Verify impedance matching and physical footprint compatibility. Consult manufacturer cross-reference lists for equivalent four-pole monolithic crystal filters.