BPF-B140N+

Overview

The BPF-B140N+ is a lumped LC bandpass filter manufactured by Mini-Circuits, designed for surface-mount applications. It operates with a center frequency of 139 MHz and provides an 8 MHz bandwidth, covering the 135 to 143 MHz range. The component features a standard 50-ohm impedance and utilizes SMD/SMT termination types. It is housed in a compact package suitable for automated assembly processes. The device is rated for operation within a temperature range of -40°C to +85°C and complies with RoHS standards for environmental safety.

Feature Summary

• Utilizes lumped LC technology for precise frequency selection
• Designed for surface-mount integration into RF circuits
• Maintains stable 50-ohm impedance matching

Applications

• RF receiver front-end filtering
• Industrial measurement systems
• Wireless communication modules

Procurement Notes

Verify the specific datasheet version and mechanical dimensions against your PCB layout requirements before ordering. Confirm that the operating environment remains within the specified -40°C to +85°C temperature range to ensure performance stability. Ensure compatibility with standard SMD reflow soldering profiles during assembly to prevent component damage.

Selection Notes

Select this component when a narrow 8 MHz bandwidth centered at 139 MHz is required for signal conditioning. The lumped LC design offers a compact footprint compared to distributed filters. Consider the SMD package style for high-volume manufacturing efficiency. Verify that the 50-ohm system impedance matches your circuit design to minimize reflection losses.

Part Context

This part belongs to the Mini-Circuits BPF series of passive RF components. Mini-Circuits specializes in RF, IF, and microwave devices ranging from DC to 86 GHz. The BPF series focuses on bandpass filtering solutions using various technologies, including lumped LC designs like this model, to support signal integrity in commercial and industrial projects.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative Mini-Circuits models within the same frequency range if sourcing constraints exist.