FCom Fuji Crystal · SAW Filters
FSF-4090 SAW Filters
110.0 MHz & 110.592 MHz
Compare four FSF-4090 models in a 4.0 × 9.0 mm PCB package. Select by center frequency, bandwidth, insertion loss and stopband attenuation, then request the model-specific datasheet for design evaluation.
FSF-4090 Model Catalog
Review all four models below. Use the complete part number when requesting technical documentation or placing an inquiry.
| Complete P/N | Series | Package | Center Frequency (MHz) | Bandwidth (MHz) | Insertion Loss (dB) | Stopband Attenuation (dB) | Mount | Technical File |
|---|---|---|---|---|---|---|---|---|
| FSF4090- |
FSF4090 | PCB4090 | 110.0 | 1.152 | 4.0 | 40.0 | SMD | Request PDF |
| FSF4090- |
FSF4090 | PCB4090 | 110.0 | 0.3 | 3.5 | 30.0 | SMD | Request PDF |
| FSF4090- |
FSF4090 | PCB4090 | 110.592 | 1.152 | 4.0 | 40.0 | SMD | Request PDF |
| FSF4090- |
FSF4090 | PCB4090 | 110.592 | 0.3 | 3.5 | 40.0 | SMD | Request PDF |
Request PDF opens an email to FCom with the selected part number. Refer to the model-specific datasheet for bandwidth definitions, minimum, typical and maximum values, and test conditions.
Across the FCom product portfolio, published product information is intended to support preliminary selection and technical evaluation. Final design and procurement decisions should be based on the latest model-specific datasheet and applicable specifications, including parameter definitions, minimum, typical and maximum values, test conditions and operating limits. Series-level ranges describe the available product options and do not represent the performance limits of any individual model.
Selection Notes
Start with the required center frequency, then compare the electrical specifications for the exact model.
Center frequency
Choose from the listed 110.0 MHz and 110.592 MHz options. These are discrete center frequencies; they do not describe a continuous operating or tuning range.
Bandwidth definition
The catalog lists bandwidths of 0.3 MHz and 1.152 MHz. Check the reference attenuation level and passband limits in the corresponding datasheet when assessing signal bandwidth.
Loss and rejection
Review insertion loss, passband ripple and stopband requirements under the applicable test conditions. Confirm the specified rejection frequency ranges and whether each value is a minimum, typical or maximum specification.
Integration Notes
Use the latest documentation for the selected part number when preparing your schematic, PCB layout and evaluation plan.
Source, load and matching
Check the specified source and load conditions and any recommended matching circuit. Evaluate the selected filter in the intended circuit before finalizing component values.
Package and PCB layout
The listed package is PCB4090, 4.0 × 9.0 mm, with SMD mounting. Confirm the mechanical drawing, pin assignment and recommended land pattern for the exact model before releasing the PCB.
Operating conditions
Review operating and storage limits, assembly requirements and electrical performance over the intended temperature range in the applicable specifications.
Frequently Asked Questions
Which center frequencies are listed for FSF-4090?
The FSF-4090 catalog includes four models at two center frequencies: 110.0 MHz and 110.592 MHz. These are discrete frequency options, not a continuous tuning range.
How do models at the same center frequency differ?
At each center frequency, the catalog lists bandwidth options of 0.3 MHz and 1.152 MHz. Insertion loss and stopband attenuation also depend on the complete part number. Compare the individual rows and review the corresponding datasheet before selecting a model.
Are the bandwidth values specified at 3 dB?
The bandwidth reference level is not specified in this catalog. Refer to the model-specific datasheet for the bandwidth definition, passband limits and measurement conditions.
Can all FSF-4090 models use the same PCB footprint and matching network?
The listed models use a PCB4090 package with dimensions of 4.0 × 9.0 mm and SMD mounting. Confirm the mechanical drawing, pin assignment, source and load requirements, and matching network for the selected model before finalizing the PCB layout.
How can I request a datasheet or technical guidance?
Select Request PDF beside the required part number to open an email to FCom. For technical guidance, include the complete part number, target center frequency, required bandwidth, source and load conditions, and operating temperature range.