FSF-5050 SAW Filters 76.5–1000 MHz for IF/RF
SMD 5.0x5.0, saw filter
FEATURE
Product Description
Your single entry point for the FSF-5050 SAW filter family: band directory, quick filters, engineering notes, and direct links to each variant page.
Designed for IF/RF receiver chains where compact size, stable band selection and practical stopband control are required across VHF/UHF and sub-GHz systems.
Tip: use the preset buttons below to auto-fill the catalog filters (Band + Min/Max MHz). Then refine with search.
Typical super-het IF filters and narrowband IF front ends.
Public safety, professional radio and VHF IF/RF blocks.
UHF front ends and intermediate blocks where rejection and stability matter.
Remote controls, telemetry, security, and sub-GHz receiver front ends.
Regional bands for 868/915 ecosystems and adjacent sub-GHz ranges.
Upper-end variants where layout and matching are especially sensitive.
This FSF-5050 family hub covers 76.5–1000 MHz. For other bands/app notes, use the links below.
SAW filters use interdigital transducers on a piezoelectric substrate to convert electrical energy into surface waves and back, creating a selective response for IF/RF chains. The FSF-5050 family focuses on practical VHF/UHF/sub-GHz selections in a compact 5.0×5.0mm SMD package.
Test-note: confirm final S21/S11, bandwidth and stopband masks with your matching network on a VNA across temperature and production lots.
| Family coverage | 76.5–1000 MHz |
|---|---|
| Package | 5.0×5.0mm, leadless SMD |
| Interface | 50 Ω systems (external matching may be required) |
| Supply | Samples • Mass production • Custom options (RFQ) |
| Best-fit uses | IF chains, VHF/UHF radios, sub-GHz receiver front ends |
FSF-5050 SAW filters are commonly placed where selectivity protects gain blocks from blockers and spurs.
Pick the closest Fc to your target band and verify tolerance across temperature and production.
Wider BW typically increases insertion loss and tightens trade-offs with stopband and group-delay flatness.
Lower IL improves sensitivity margin; ripple impacts passband flatness and BER/EVM.
Suppression of adjacent/mirror/spurious signals in the overall LNA/BPF/SAW chain.
| Parameter | Why it matters | What to provide for RFQ |
|---|---|---|
| Center frequency / passband | Defines channel selection and IF/RF alignment | Target Fc (MHz), passband edges, tolerance |
| 3 dB bandwidth | Trades selectivity vs distortion and IL | BW target and allowable ripple |
| Insertion loss budget | Directly impacts sensitivity margin | Max IL at Fc and over band |
| Stopband mask | Controls blockers and spurs reaching gain stages | Required attenuation at offsets / bands |
| Impedance / matching | Determines final S11/S21 after tuning | System impedance (often 50 Ω), allowed BOM for matching |
| Temperature / grade | Shifts response and impacts stability | Operating range and qualification target (industrial/automotive) |
| Packaging / assembly | Defines footprint, solder profile, reliability | 5.0×5.0mm SMD, MSL/packaging, traceability needs |
Prioritize low IL and controlled group delay to protect sensitivity and demodulation.
Sub-GHz designs typically balance BW vs rejection for robust low-power receivers.
Use stopband and intermod considerations to protect the LNA/mixer chain.
Consistent passband and stopband control help maintain sensitivity in the presence of strong adjacent interferers.
BW and IL trade-offs determine link budget margin; tuning ensures the SAW filter aligns with regional channel plans.
Well-defined IF shaping reduces image/mirror issues (system-dependent) and mitigates unwanted mixing products.
Stopband attenuation protects LNAs/mixers from compression and desensitization caused by out-of-band power.
This section is the primary SEO/UX asset: each variant links to its dedicated product page for the latest datasheet, matching notes and ordering details. Use search + band + min/max MHz to narrow quickly.
| Variant page | Center frequency / passband | Band |
|---|---|---|
| FSF-5050 76.5 MHz | 76.5 MHz | IF (VHF) |
| FSF-5050 149 MHz | 149 MHz | VHF |
| FSF-5050 149.64 MHz | 149.64 MHz | VHF |
| FSF-5050 155 MHz | 155 MHz | VHF |
| FSF-5050 162–169.4 MHz | 162–169.4 MHz | VHF |
| FSF-5050 171 MHz | 171 MHz | VHF |
| FSF 180–188.175 MHz | 180–188.175 MHz | VHF |
| FSF-5050 200 MHz | 200 MHz | VHF |
| FSF-5050 218.5–219.5 MHz | 218.5–219.5 MHz | VHF |
| FSF-5050 220–221.6 MHz | 220–221.6 MHz | UHF |
| FSF-5050 230–234 MHz | 230–234 MHz | UHF |
| FSF-5050 246–250 MHz | 246–250 MHz | UHF |
| FSF-5050 262–268 MHz | 262–268 MHz | UHF |
| FSF-5050 280–285 MHz | 280–285 MHz | UHF |
| FSF-5050 291.4 MHz | 291.4 MHz | UHF |
| FSF-5050 309–319.5 MHz | 309–319.5 MHz | UHF |
| FSF-5050 340–345 MHz | 340–345 MHz | UHF |
| FSF-5050 352–354.5 MHz | 352–354.5 MHz | UHF |
| FSF-5050 364.5–367.5 MHz | 364.5–367.5 MHz | UHF |
| FSF-5050 387.5–388.5 MHz | 387.5–388.5 MHz | UHF |
| FSF-5050 390–394 MHz | 390–394 MHz | UHF |
| FSF-5050 400–408.5 MHz | 400–408.5 MHz | UHF |
| FSF-5050 413–415.4 MHz | 413–415.4 MHz | UHF / ISM |
| FSF-5050 420–427.8 MHz | 420–427.8 MHz | UHF / ISM |
| FSF-5050 433–435 MHz | 433–435 MHz | UHF / ISM |
| FSF-5050 440–446 MHz | 440–446 MHz | UHF / ISM |
| FSF-5050 458.5 MHz | 458.5 MHz | UHF / ISM |
| FSF-5050 460–465 MHz | 460–465 MHz | UHF / ISM |
| FSF-5050 470–475 MHz | 470–475 MHz | UHF / ISM |
| FSF-5050 480 MHz | 480 MHz | UHF / ISM |
| FSF-5050 499–499.25 MHz | 499–499.25 MHz | UHF / ISM |
| FSF-5050 500–504 MHz | 500–504 MHz | Sub-GHz |
| FSF-5050 554 MHz | 554 MHz | Sub-GHz |
| FSF-5050 584 MHz | 584 MHz | Sub-GHz |
| FSF-5050 604.5–609.9 MHz | 604.5–609.9 MHz | Sub-GHz |
| FSF-5050 611–618.25 MHz | 611–618.25 MHz | Sub-GHz |
| FSF-5050 638 MHz | 638 MHz | Sub-GHz |
| FSF-5050 656 MHz | 656 MHz | Sub-GHz |
| FSF-5050 674 MHz | 674 MHz | Sub-GHz |
| FSF-5050 713 MHz | 713 MHz | 700/800/900 |
| FSF-5050 743 MHz | 743 MHz | 700/800/900 |
| FSF-5050 757.5 MHz | 757.5 MHz | 700/800/900 |
| FSF-5050 787.5 MHz | 787.5 MHz | 700/800/900 |
| FSF-5050 862.5–869.6 MHz | 862.5–869.6 MHz | 700/800/900 |
| FSF-5050 886 MHz | 886 MHz | 700/800/900 |
| FSF-5050 916.3 MHz | 916.3 MHz | 1 GHz |
| FSF-5050 974.3 MHz | 974.3 MHz | 1 GHz |
| FSF-5050 1000 MHz | 1000 MHz | 1 GHz |
Don’t see your target frequency or bandwidth? Share your requirements (Fc, BW, IL, stopband mask, impedance/matching constraints, temperature range, qualification level) and we’ll propose the closest standard part or a custom option.
Use these internal guides to choose faster and reduce tuning iterations:
Footprint and assembly details should follow the specific variant page and your PCB stack-up rules.
Start from vendor-recommended π/T networks; verify S11/S21 on a VNA near band edges to protect the sensitivity budget.
Ensure solid ground under the device/can. High-Q front ends benefit from shield cans and partitioned routing to reduce coupling.
If EVM/BER is critical, check group-delay flatness across the passband; overly narrow BW can distort the envelope.
For industrial/automotive programs, confirm qualification scope (e.g., AEC-Q200), life testing, thermal cycling and traceability; PPAP as needed.
SAW devices are compact and cost-effective from sub-GHz to ~1.6 GHz, with trade-offs between bandwidth, insertion loss and rejection. BAW suits higher frequencies with higher Q and strong stopband but is typically higher cost. LC filters are flexible and tunable with PA/LNA matching, but stability and consistency depend on component tolerances and temperature drift.
Common 3 dB bandwidth is 200 kHz–2 MHz with around 2–6 dB insertion loss. Final values depend on device structure/materials and the external matching network.
Start from vendor-recommended π/T networks, then verify S11/S21 on a VNA near band edges. Fine-tune components to meet sensitivity budget and emission/adjacent-channel masks.
Some devices/packages can be supplied as AEC-Q200 or industrial grades. For series programs, confirm life testing, thermal cycling, PPAP and traceability requirements.
MOQ and lead time depend on the exact variant and qualification level. Send your target frequency/bandwidth and volume to receive an RFQ with a schedule.
Yes. We provide samples and can support matching/layout review. Share your schematic/PCB constraints and VNA test plan to speed up tuning.
Yes. For production programs we can propose the closest standard part or discuss custom targets such as center frequency, 3 dB bandwidth, impedance and stopband masks.
B2B pricing depends on variant, qualification, volume, delivery terms and packaging. Request an RFQ for an accurate quote and lead-time commitment.
Depending on the part, we can provide datasheets, S-parameter guidance, recommended matching notes, and compliance information such as RoHS/REACH. Ask when submitting an RFQ.
Need help selecting a SAW filter, a reference matching network, or a design review? Contact us for samples/lead time/pricing and layout feedback.
Quality note: Fuji Crystal operates under ISO 9001 and ISO 14001 management systems (see certificates: ISO 9001, ISO 14001). Final specifications and availability are subject to the variant datasheet and incoming inspection.
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