# SAW Components B3574 – 868.30 MHz Low Loss Filter

## Features

· RF low-loss filter for remote control receivers
· SMT package
· Supports balanced and unbalanced operation
· Ni, gold-plated terminals
· QCC8C3 ceramic package

## Pin Configuration

1. Input
2. Input Ground/Balanced Input
3. To be grounded
4, 8. Case-Ground
5. Output
6. Output Ground/Balanced Output
7. External Coupling Coil

## Maximum Ratings

· Operable temperature range: -45/+95 °C
· Storage temperature range: -45/+95 °C
· DC voltage: 0 V
· Source power: 0 dBm

## Characteristics

· Center frequency (fC): 868.30 MHz
· Minimum insertion attenuation (αmin): 4.2 dB @ 868.20 - 868.40 MHz
· Amplitude ripple: 0.5 dB (868.16 - 868.44 MHz)
· Relative attenuation (αrel): 60 - 65 dB (10.00 - 600.00 MHz)
· Input impedance: 360 || 1.3 pF
· Output impedance: 380 || 1.3 pF
· Temperature coefficient (TCf): -0.03 ppm/°C

## Matching Network

· Ls1: 18 nH
· Lp2: 39 nH
· Lp3: 39 nH
· Ls4: 18 nH
· Lk: 12 nH

## Crosstalk Minimization

· Ground loops should be avoided by using separate via holes for input/output grounds.
· A common GND inductivity of 0.5nH degrades rejection by 20dB.
· Optimized PCB layout minimizes ground loops.