FCom Fuji Crystal · SMD SAW Filters
FSF-3838 SAW Filters — 243–1090 MHz
SMD · 3.8 × 3.8 mm
Compare 75 FSF-3838 SAW filter models by center frequency, bandwidth, insertion loss and stopband attenuation. Use the frequency selector to shortlist a part, then request its datasheet for electrical limits and design-in details.
Frequency Catalog
Find Your FSF-3838 Model
Choose a frequency band and compare the listed specifications. Use the complete part number when requesting technical documentation.
Filters work together. Minimum and maximum frequency values include the entered endpoints.
Enter non-negative frequency limits with the minimum no greater than the maximum.
Scroll within the table to view more rows and columns. Request PDF opens a model-specific email inquiry.
| Complete P/N | Series | Package | Center Frequency (MHz) | Bandwidth (MHz) | Insertion Loss (dB) | Stopband Attenuation (dB) | Mount | Technical File |
|---|---|---|---|---|---|---|---|---|
| FSF3838-243M-20k-3.3-40 | FSF3838 | SMD3838 | 243.0 | 0.02 | 3.3 | 40.0 | SMD | Request PDF |
| FSF3838-243M95-300k-3-40 | FSF3838 | SMD3838 | 243.95 | 0.3 | 3.0 | 40.0 | SMD | Request PDF |
| FSF3838-267M-2M-1.5-50 | FSF3838 | SMD3838 | 267.0 | 2.0 | 1.5 | 50.0 | SMD | Request PDF |
| FSF3838-300M-8M-2.5-40 | FSF3838 | SMD3838 | 300.0 | 8.0 | 2.5 | 40.0 | SMD | Request PDF |
| FSF3838-312M-5M-1.5-50 | FSF3838 | SMD3838 | 312.0 | 5.0 | 1.5 | 50.0 | SMD | Request PDF |
| FSF3838-315M-1M-2-40 | FSF3838 | SMD3838 | 315.0 | 1.0 | 2.0 | 40.0 | SMD | Request PDF |
| FSF3838-345M-10M-1.5-50 | FSF3838 | SMD3838 | 345.0 | 10.0 | 1.5 | 50.0 | SMD | Request PDF |
| FSF3838-353M5-5M-1.5-40 | FSF3838 | SMD3838 | 353.5 | 5.0 | 1.5 | 40.0 | SMD | Request PDF |
| FSF3838-363M5-5M-1.6-40 | FSF3838 | SMD3838 | 363.5 | 5.0 | 1.6 | 40.0 | SMD | Request PDF |
| FSF3838-373M5-5M-2-40 | FSF3838 | SMD3838 | 373.5 | 5.0 | 2.0 | 40.0 | SMD | Request PDF |
| FSF3838-374M5-5M-2-40 | FSF3838 | SMD3838 | 374.5 | 5.0 | 2.0 | 40.0 | SMD | Request PDF |
| FSF3838-383M25-6M5-2-40 | FSF3838 | SMD3838 | 383.25 | 6.5 | 2.0 | 40.0 | SMD | Request PDF |
| FSF3838-387M5-5M-1.7-40 | FSF3838 | SMD3838 | 387.5 | 5.0 | 1.7 | 40.0 | SMD | Request PDF |
| FSF3838-393M25-6M5-2-50 | FSF3838 | SMD3838 | 393.25 | 6.5 | 2.0 | 50.0 | SMD | Request PDF |
| FSF3838-393M5-7M-2.5-40 | FSF3838 | SMD3838 | 393.5 | 7.0 | 2.5 | 40.0 | SMD | Request PDF |
| FSF3838-400M-7M6-2-40 | FSF3838 | SMD3838 | 400.0 | 7.6 | 2.0 | 40.0 | SMD | Request PDF |
| FSF3838-400M-500k-1.8-40 | FSF3838 | SMD3838 | 400.0 | 0.5 | 1.8 | 40.0 | SMD | Request PDF |
| FSF3838-410M-6M-2-40 | FSF3838 | SMD3838 | 410.0 | 6.0 | 2.0 | 40.0 | SMD | Request PDF |
| FSF3838-412M5-25M-3.7-40 | FSF3838 | SMD3838 | 412.5 | 25.0 | 3.7 | 40.0 | SMD | Request PDF |
| FSF3838-415M-6M-2.5-50 | FSF3838 | SMD3838 | 415.0 | 6.0 | 2.5 | 50.0 | SMD | Request PDF |
| FSF3838-420M-20M-2.8-40 | FSF3838 | SMD3838 | 420.0 | 20.0 | 2.8 | 40.0 | SMD | Request PDF |
| FSF3838-422M5-5M-2.4-50 | FSF3838 | SMD3838 | 422.5 | 5.0 | 2.4 | 50.0 | SMD | Request PDF |
| FSF3838-425M-10M-2-50 | FSF3838 | SMD3838 | 425.0 | 10.0 | 2.0 | 50.0 | SMD | Request PDF |
| FSF3838-427M-8M-2-40 | FSF3838 | SMD3838 | 427.0 | 8.0 | 2.0 | 40.0 | SMD | Request PDF |
| FSF3838-437M-24M-3-40 | FSF3838 | SMD3838 | 437.0 | 24.0 | 3.0 | 40.0 | SMD | Request PDF |
| FSF3838-437M5-25M-3.2-40 | FSF3838 | SMD3838 | 437.5 | 25.0 | 3.2 | 40.0 | SMD | Request PDF |
| FSF3838-440M-6M-3-50 | FSF3838 | SMD3838 | 440.0 | 6.0 | 3.0 | 50.0 | SMD | Request PDF |
| FSF3838-440M-23M3-1.4-50 | FSF3838 | SMD3838 | 440.0 | 23.3 | 1.4 | 50.0 | SMD | Request PDF |
| FSF3838-446M-6M-2-50 | FSF3838 | SMD3838 | 446.0 | 6.0 | 2.0 | 50.0 | SMD | Request PDF |
| FSF3838-448M-4M-2.9-40 | FSF3838 | SMD3838 | 448.0 | 4.0 | 2.9 | 40.0 | SMD | Request PDF |
| FSF3838-450M-4M-2-50 | FSF3838 | SMD3838 | 450.0 | 4.0 | 2.0 | 50.0 | SMD | Request PDF |
| FSF3838-457M5-5M-3-50 | FSF3838 | SMD3838 | 457.5 | 5.0 | 3.0 | 50.0 | SMD | Request PDF |
| FSF3838-460M-20M-2.7-50 | FSF3838 | SMD3838 | 460.0 | 20.0 | 2.7 | 50.0 | SMD | Request PDF |
| FSF3838-470M-6M-3-40 | FSF3838 | SMD3838 | 470.0 | 6.0 | 3.0 | 40.0 | SMD | Request PDF |
| FSF3838-475M-10M-2.5-40 | FSF3838 | SMD3838 | 475.0 | 10.0 | 2.5 | 40.0 | SMD | Request PDF |
| FSF3838-477M5-5M-2.4-40 | FSF3838 | SMD3838 | 477.5 | 5.0 | 2.4 | 40.0 | SMD | Request PDF |
| FSF3838-487M5-5M-2.4-50 | FSF3838 | SMD3838 | 487.5 | 5.0 | 2.4 | 50.0 | SMD | Request PDF |
| FSF3838-487M5-25M-3.7-40 | FSF3838 | SMD3838 | 487.5 | 25.0 | 3.7 | 40.0 | SMD | Request PDF |
| FSF3838-490M-40M-3.5-30 | FSF3838 | SMD3838 | 490.0 | 40.0 | 3.5 | 30.0 | SMD | Request PDF |
| FSF3838-512M-7M5-2.3-40 | FSF3838 | SMD3838 | 512.0 | 7.5 | 2.3 | 40.0 | SMD | Request PDF |
| FSF3838-515M-30M-3.5-30 | FSF3838 | SMD3838 | 515.0 | 30.0 | 3.5 | 30.0 | SMD | Request PDF |
| FSF3838-524M-7M8-1.5-50 | FSF3838 | SMD3838 | 524.0 | 7.8 | 1.5 | 50.0 | SMD | Request PDF |
| FSF3838-524M5-27M-2.3-40 | FSF3838 | SMD3838 | 524.5 | 27.0 | 2.3 | 40.0 | SMD | Request PDF |
| FSF3838-537M-8M-2.5-40 | FSF3838 | SMD3838 | 537.0 | 8.0 | 2.5 | 40.0 | SMD | Request PDF |
| FSF3838-549M5-27M-1.5-50 | FSF3838 | SMD3838 | 549.5 | 27.0 | 1.5 | 50.0 | SMD | Request PDF |
| FSF3838-550M-8M5-2.5-40 | FSF3838 | SMD3838 | 550.0 | 8.5 | 2.5 | 40.0 | SMD | Request PDF |
| FSF3838-562M-40M-4.1-40 | FSF3838 | SMD3838 | 562.0 | 40.0 | 4.1 | 40.0 | SMD | Request PDF |
| FSF3838-563M-8M3-2.5-40 | FSF3838 | SMD3838 | 563.0 | 8.3 | 2.5 | 40.0 | SMD | Request PDF |
| FSF3838-575M-24M-2.5-50 | FSF3838 | SMD3838 | 575.0 | 24.0 | 2.5 | 50.0 | SMD | Request PDF |
| FSF3838-576M-8M5-2.5-40 | FSF3838 | SMD3838 | 576.0 | 8.5 | 2.5 | 40.0 | SMD | Request PDF |
| FSF3838-590M-8M5-2.3-40 | FSF3838 | SMD3838 | 590.0 | 8.5 | 2.3 | 40.0 | SMD | Request PDF |
| FSF3838-602M-7M-2.3-40 | FSF3838 | SMD3838 | 602.0 | 7.0 | 2.3 | 40.0 | SMD | Request PDF |
| FSF3838-617M5-35M-3-40 | FSF3838 | SMD3838 | 617.5 | 35.0 | 3.0 | 40.0 | SMD | Request PDF |
| FSF3838-618M-10M-1.5-40 | FSF3838 | SMD3838 | 618.0 | 10.0 | 1.5 | 40.0 | SMD | Request PDF |
| FSF3838-625M-15M-1.5-40 | FSF3838 | SMD3838 | 625.0 | 15.0 | 1.5 | 40.0 | SMD | Request PDF |
| FSF3838-625M-30M-3.5-30 | FSF3838 | SMD3838 | 625.0 | 30.0 | 3.5 | 30.0 | SMD | Request PDF |
| FSF3838-626M-16M-1.5-40 | FSF3838 | SMD3838 | 626.0 | 16.0 | 1.5 | 40.0 | SMD | Request PDF |
| FSF3838-627M-24M-2.2-40 | FSF3838 | SMD3838 | 627.0 | 24.0 | 2.2 | 40.0 | SMD | Request PDF |
| FSF3838-634M-16M-1.5-40 | FSF3838 | SMD3838 | 634.0 | 16.0 | 1.5 | 40.0 | SMD | Request PDF |
| FSF3838-647M-42M-3.5-50 | FSF3838 | SMD3838 | 647.0 | 42.0 | 3.5 | 50.0 | SMD | Request PDF |
| FSF3838-650M-4M-2.5-40 | FSF3838 | SMD3838 | 650.0 | 4.0 | 2.5 | 40.0 | SMD | Request PDF |
| FSF3838-653M-24M-2.2-40 | FSF3838 | SMD3838 | 653.0 | 24.0 | 2.2 | 40.0 | SMD | Request PDF |
| FSF3838-655M-30M-3.5-30 | FSF3838 | SMD3838 | 655.0 | 30.0 | 3.5 | 30.0 | SMD | Request PDF |
| FSF3838-666M-17M-1.5-40 | FSF3838 | SMD3838 | 666.0 | 17.0 | 1.5 | 40.0 | SMD | Request PDF |
| FSF3838-674M-17M-4.5-50 | FSF3838 | SMD3838 | 674.0 | 17.0 | 4.5 | 50.0 | SMD | Request PDF |
| FSF3838-680M5-35M-3-40 | FSF3838 | SMD3838 | 680.5 | 35.0 | 3.0 | 40.0 | SMD | Request PDF |
| FSF3838-682M-17M-1.5-40 | FSF3838 | SMD3838 | 682.0 | 17.0 | 1.5 | 40.0 | SMD | Request PDF |
| FSF3838-717M-38M-3.5-40 | FSF3838 | SMD3838 | 717.0 | 38.0 | 3.5 | 40.0 | SMD | Request PDF |
| FSF3838-787M-21M-2.5-40 | FSF3838 | SMD3838 | 787.0 | 21.0 | 2.5 | 40.0 | SMD | Request PDF |
| FSF3838-800M-8M-2.5-40 | FSF3838 | SMD3838 | 800.0 | 8.0 | 2.5 | 40.0 | SMD | Request PDF |
| FSF3838-869M-2M-2.7-40 | FSF3838 | SMD3838 | 869.0 | 2.0 | 2.7 | 40.0 | SMD | Request PDF |
| FSF3838-900M-30M-2-30 | FSF3838 | SMD3838 | 900.0 | 30.0 | 2.0 | 30.0 | SMD | Request PDF |
| FSF3838-906M-10M-2.4-50 | FSF3838 | SMD3838 | 906.0 | 10.0 | 2.4 | 50.0 | SMD | Request PDF |
| FSF3838-915M-26M-2.4-50 | FSF3838 | SMD3838 | 915.0 | 26.0 | 2.4 | 50.0 | SMD | Request PDF |
| FSF3838-1090M-30M-2.3-40 | FSF3838 | SMD3838 | 1090.0 | 30.0 | 2.3 | 40.0 | SMD | Request PDF |
No models match your filters. Try a wider frequency range or clear the filters.
Values are reproduced from the supplied catalog. The list does not specify a common min./typ./max. classification, bandwidth reference level, stopband measurement bands or source/load conditions. Confirm the selected model’s datasheet before design approval.
Selection Notes
Compare More Than Center Frequency
Frequency & Bandwidth
Start with the required signal band. The catalog includes multiple bandwidth options at some center frequencies, so check passband edges and the bandwidth definition for the exact model.
Insertion Loss & Rejection
Compare loss across the required passband and attenuation at the interfering frequencies in your design. The listed stopband value alone does not define a complete rejection mask.
Complete Part Number
Models at 400 MHz and 625 MHz, for example, have different listed bandwidths. Use the full ordering code to identify the required electrical configuration.
Integration Notes
Plan the Interface and Board Evaluation
Source, Load & Matching
Obtain the model-specific source/load impedance, test circuit and matching recommendations before selecting interface components. These conditions are not included in the catalog table.
PCB & Operating Conditions
Review ground connections, land pattern, temperature limits and assembly requirements. Evaluate passband performance and rejection on the intended PCB under the required operating conditions.
Package & Pin Assignment
3.8 × 3.8 mm SMD Package
SMD3838
- Series
- FSF3838
- Package designation
- SMD3838
- Listed dimensions
- 3.8 × 3.8 mm
- Mount
- SMD
Model-Specific Drawing
Request the mechanical drawing and pin-function table for the selected part. Package height, pad dimensions, orientation and pin assignments are not provided in the selection list.
A shared package designation does not establish interchangeability between electrical configurations.
Selection and Design-In Support
Request Documentation for Your Selected Model
Send the complete part number, target passband, bandwidth definition, insertion loss limit, rejection frequencies, source/load conditions and operating temperature. Include sample quantity and expected production volume when available.
Engineering Questions
Frequently Asked Questions
What is the FSF-3838 SAW filter series?
FSF-3838 is a selection of 75 SAW filter models in SMD3838 surface-mount packages with a listed size of 3.8 × 3.8 mm. The catalog includes center frequencies from 243 to 1090 MHz.
Does 243–1090 MHz describe one filter passband?
No. This is the span of the listed center frequencies across the series. Each part has its own center frequency and bandwidth; the series does not provide a continuous passband across that span.
Are all listed bandwidths measured at 3 dB?
The selection list does not specify a common bandwidth reference level. Confirm the bandwidth definition and passband limits in the datasheet for the selected part.
Why are there multiple models at the same center frequency?
Parts at the same center frequency can have different bandwidths, insertion loss values or stopband attenuation values. Compare the complete part number and the corresponding datasheet, rather than selecting by center frequency alone.
Do all FSF-3838 models use the same footprint and matching circuit?
A shared package size does not confirm identical pin functions, land patterns or matching requirements. Use the selected model’s mechanical drawing, pin assignment and source/load conditions for PCB design.
How can I obtain a model-specific datasheet?
Select Request PDF beside a model or use the technical inquiry link. Include the complete part number, required passband, rejection frequencies, source/load conditions, operating temperature and sample quantity.