Bourns Introduces FLP Series LTCC Low-Pass Filters Covering DC to 3.8 GHz

Bourns has introduced the FLP Series, a family of nine LTCC (low-temperature co-fired ceramic) low-pass filters covering operating frequencies from DC to 3.8 GHz. The filters are available in multiple package sizes and target wireless communication applications including IoT, LTE, GNSS and 5G.

Built using LTCC multilayer ceramic construction, the FLP Series integrates passive elements into a single monolithic component, reducing component count in compact RF designs.

Nine Models Cover Multiple Wireless Frequency Bands

The FLP Series consists of nine filter models covering frequency ranges from DC to 3800 MHz.

The FLP1004N089D4 supports 824 MHz to 960 MHz, while the FLP1606N078D6 covers 600 MHz to 960 MHz. For higher-frequency applications, the FLP1608N250D6 operates from 2300 MHz to 2700 MHz, and the FLP1606N355D6 targets the 3300 MHz to 3800 MHz 5G frequency band.

The FLP2009N025D8 covers applications from DC to 500 MHz, while the FLP2009N086D8, FLP2009N091D8, and FLP2009N092D8 support sub-GHz wireless frequency bands between 858 MHz and 960 MHz. Completing the family, the FLP2009N141L3 provides the broadest operating range, covering 800 MHz to 2025 MHz.

Depending on the model selected, maximum insertion loss ranges from 0.50 dB to 1.50 dB, with all devices specified for operation from -40 °C to +85 °C.

LTCC Construction Reduces Board Space

All FLP Series devices use LTCC multilayer ceramic construction, integrating multiple passive elements into a single compact component. This reduces component count and PCB area while providing a reliable filtering solution for space-constrained RF designs.

The filters are available in package sizes ranging from 1.0 × 0.5 × 0.4 mm up to 2.0 × 1.25 × 0.95 mm, allowing designers to select devices based on frequency and size requirements.

Designed for Wireless Communication Systems

The FLP Series supports wireless applications including IoT devices, LTE infrastructure, GNSS receivers and 5G systems. All nine models are RoHS compliant and are available now through Bourns' authorised distribution network.

Learn more and read the original announcement at the Bourns website.

Technology Overview

LTCC (Low-Temperature Co-Fired Ceramic) filters integrate multiple passive elements into a single ceramic structure, allowing RF filtering functions to be implemented in a compact, highly reliable package. Their small footprint and stable electrical characteristics make them widely used in wireless communication equipment where PCB space and signal integrity are critical.

Frequently Asked Questions

What is the Bourns FLP Series?

The FLP Series is a family of nine LTCC low-pass filters designed for wireless communication applications. The devices cover operating frequencies from DC to 3.8 GHz and are available in multiple package sizes.

What applications are the filters designed for?

The filters support a range of wireless applications including IoT devices, LTE equipment, GNSS receivers and 5G systems, depending on the model selected.

What are the advantages of LTCC filters?

LTCC filters integrate multiple passive elements into a compact ceramic package, helping reduce PCB area while providing consistent RF filtering performance across a wide operating temperature range.