Bourns LTCC Band Pass Filter – Balanced Type Integrates Balun And Impedance Matching For Sub GHz IoT RF Front Ends
Compact 1.6 × 0.8 mm device combines filter, balun, and impedance matching functions to reduce component count in wireless designs
Bourns today announced the Model FBD1608N080D6 LTCC (Low-Temperature Co-fired Ceramic) band pass filter - balanced type, a sub‑GHz RF filter‑integrated balun designed for wireless communication applications. The device operates across a 770 MHz to 928 MHz frequency range and combines filtering, balun functionality, and impedance matching within a single component to simplify RF front-end design.
Designers of sub‑GHz IoT systems must address board space constraints while maintaining signal integrity and minimizing part count. Discrete RF implementations can increase layout complexity and introduce variability in performance due to component tolerances and routing inefficiencies. LTCC technology integrates passive elements into a monolithic structure, reducing size and improving consistency.
“Integrating filtering, balun, and impedance matching into a single LTCC device helps streamline RF front-end design while maintaining consistent electrical performance across a compact footprint,” said Edward Liu, Product Line Manager, Bourns.
Design Features and Key Capabilities
- LTCC construction for compactness and reliability - multilayer ceramic structure integrates passive elements into a stable, consistent, and durable monolithic device
- Compact size - 1.6 x 0.8 x 0.6 mm, supports space-constrained designs and high-density PCB layouts
- Working frequency: 770 MHz to 928 MHz - covers sub-GHz ISM and regional IoT bands for low-power wireless applications
- Integrated filtering, balun, and impedance matching - reduces component count and simplifies RF front-end design
- RoHS compliant* - Meets global environmental regulations
Electrical Specifications
| Parameter | Specification |
| Frequency Range | 770 - 860 MHz / 860 - 928 MHz |
| Insertion Loss | 1.6 dB max.; 2.2 dB max. |
| Return Loss | 9.5 dB min. |
| Phase Difference | 180° ±17° / ±15° |
| Amplitude Difference | 3.5 dB / 2.0 dB max. |
| Power Capacity | 3 W max. |
| Operating Temperature | -40 to +85 °C |
Applications
- Sub-GHz low-power IoT wireless applications
Availability and Ordering
The ModelFBD1608N080D6 is available now through authorized distribution channels. Product details and samples are available at Bourns RF Components - Filters. Samples may be requested through Bourns Customer Service.
About Bourns
Bourns is a privately held manufacturer of power electronics, resistive components, circuit protection, and sensing solutions. Founded in 1947 and headquartered in Riverside, California, Bourns serves the automotive, industrial, consumer, communications, healthcare†, and audio markets through a global network of design, manufacturing, and sales operations. For more information, visit bourns.com.
* RoHS Directive 2015/863, Mar 31, 2015 and Annex.
† Bourns products have not been designed for and are not intended for use in "lifesaving," "life-critical" or "life-sustaining" applications nor any other applications where failure or malfunction of the Bourns product may result in personal injury or death. See Legal Disclaimer Notice www.bourns.com/docs/legal/disclaimer.pdf
Source: Bourns, Inc.