Features
• 50 Ω nominal input / conjugate matched to ST S2-LP for 433 MHz frequency
operation
• Low insertion loss
• Low amplitude imbalance
• Low phase imbalance
• Small footprint
• Very low profile < 620 μm after reflow
• High RF performance
• RF BOM and area reduction
• ECOPACK® 2 compliant component

Applications
• 433 MHz impedance matched balun filter
• Optimized for ST S2-LP sub GHz RFIC

Description
This device is an ultra-miniature balun. The BALF-SPI2-02D3 integrates matching
network and harmonics filter. Matching impedance has been customized for the ST
S2-LP transceiver. The BALF-SPI2-02D3 uses STMicroelectronics IPD technology on
non-conductive glass substrate which optimize RF performance.