Bourns FLP Low Pass LTCC Filters

Introduction

Bourns FLP Low Pass LTCC Filters are compact passive RF filtering components designed to pass low-frequency signals while attenuating unwanted higher-frequency content. Built with Low-Temperature Co-Fired Ceramic (LTCC) technology, these filters support reliable signal conditioning in space-constrained electronic designs.

Part Description

The Bourns FLP series consists of low-pass filters with a nominal 50 Ω impedance, making them suitable for many RF signal paths and communication systems. They provide filtering coverage from DC through 3800 MHz, helping designers suppress harmonics, spurious emissions, and high-frequency interference.

LTCC construction gives the filters a small footprint, stable electrical performance, and robust environmental reliability. The series supports power handling of up to 3 W and operates across a temperature range of -40°C to +85°C, allowing use in consumer, industrial, automotive-adjacent, and outdoor-connected equipment.

Key characteristics include:

• Low-pass filtering from DC to 3800 MHz
• 50 Ω characteristic impedance
• LTCC ceramic construction
• Up to 3 W power capability
• Operating temperature range of -40°C to +85°C
• Compact package format for high-density PCB layouts
• Designed for RF, wireless, navigation, and cellular applications

Applications

Potential applications for Bourns FLP Low Pass LTCC Filters include:

• IoT wireless nodes
• LTE communication modules
• 5G wireless equipment
• GNSS and GPS receivers
• RF transmitters and receivers
• Antenna feed networks
• Harmonic suppression circuits
• Wireless sensor networks
• Remote monitoring devices
• Cellular gateways and routers
• RF test and measurement equipment
• Smart metering systems

Industries

These filters can be used across a range of industries, including:

• Telecommunications
• Consumer electronics
• Internet of Things
• Industrial automation
• Smart infrastructure
• Transportation and telematics
• Navigation and positioning
• Wireless networking
• Test and measurement
• Security and remote monitoring
• Energy and utility monitoring

Usage Ideas

1. IoT Sensor Gateway
   Add an FLP filter between an LTE or sub-GHz radio module and its antenna circuitry to reduce unwanted harmonic emissions and improve RF signal cleanliness.

2. GNSS Receiver Front End
   Use a suitable filter in a GNSS signal path to attenuate higher-frequency interference before the signal reaches a receiver or low-noise amplifier stage.

3. 5G RF Evaluation Board
   Integrate the filter into a prototype RF board to evaluate harmonic suppression and out-of-band noise reduction in a 50 Ω wireless signal chain.

Conclusion

Bourns FLP Low Pass LTCC Filters offer a compact and dependable solution for RF filtering applications requiring a 50 Ω impedance environment. Their DC-to-3800 MHz operating capability, up-to-3 W power handling, and wide temperature range make them well suited to IoT, LTE, 5G, GNSS, and other wireless electronic designs where harmonic suppression and high-frequency noise reduction are important.