ZX75BP-253-S+

Overview

The ZX75BP-253-S+ is a 50Ω bandpass filter manufactured by Mini-Circuits, designed for RF signal conditioning applications. It operates within a passband of 186 to 340 MHz, providing a bandwidth of 154 MHz with a center frequency of 263 MHz. The component features an insertion loss of 3 dB and ensures good impedance matching within the passband. It delivers high rejection in the stop band, with a minimum stop band rejection of 35 dB. The device is housed in a connectorized package equipped with SMA connectors, facilitating easy integration into inline RF circuits.

Feature Summary

• Provides selective frequency filtering within the 186 to 340 MHz range
• Ensures high stop band rejection for effective interference suppression
• Maintains good impedance matching throughout the operational passband

Applications

• RF signal path filtering in communication systems
• Interference rejection in receiver front-ends
• Signal conditioning in test and measurement equipment

Procurement Notes

Verify the specific SMA connector gender and cable assembly requirements prior to integration, as the datasheet specifies the connector type but not the mating hardware configuration. Confirm that the operating environment remains within the specified temperature range to maintain the stated 35 dB minimum stop band rejection performance. Ensure system impedance matches the 50Ω specification to prevent signal reflection issues.

Selection Notes

Select this component when a fixed center frequency of 263 MHz is required with a 154 MHz bandwidth. It is suitable for designs needing compact, connectorized solutions rather than surface-mount alternatives. Consider the 3 dB insertion loss impact on overall system noise figure. Verify that the physical dimensions of the connectorized package fit within the available chassis or PCB real estate constraints.

Part Context

This part belongs to the ZX75BP series of lumped LC bandpass filters from Mini-Circuits. The series offers various center frequencies and bandwidths tailored for different RF applications. The ZX75BP-253-S+ specifically targets the VHF/UHF transition region, providing a standardized solution for engineers requiring reliable filtering without custom circuit design efforts.

Replacement Considerations

Direct substitutes include other ZX75BP series models with similar center frequencies, such as the ZX75BP-A70-S+ for lower frequency applications. Cross-reference with other manufacturers' VHF bandpass filters if supply chain diversification is necessary, ensuring equivalent 50Ω impedance and SMA connectivity.