FSF-5050-743M 743MHz RF SAW Filter
743MHz center frequency · 5.0×5.0×1.7 mm SMD package · 50 Ω system
Built for UHF RF front ends operating around 740–746MHz, FSF-5050-743M helps improve receiver selectivity and interference immunity where adjacent-channel suppression matters. It is a practical choice for private wireless, telemetry, and narrowband transceiver architectures that need a compact, production-ready SAW bandpass filter.
FSF-5050-743M is a 743MHz RF SAW filter from FCom Fuji Crystal in a 5.0×5.0×1.7 mm standard SMD package. It delivers low insertion loss across the 740–746 MHz passband and high attenuation in critical interferer bands, making it well-suited for 740–746 MHz UHF RF front ends and mission-critical wireless communication systems.
Key Features at a Glance
Test condition note: unless otherwise stated in the datasheet, key RF measurements are typically referenced to a 50 Ω / 50 Ω system under specified lab conditions (e.g., nominal temperature and calibrated fixtures).
Note: All data above are typical values. For detailed electrical specifications and test conditions, please refer to the latest official datasheet.
Target Systems / Typical Placement
Target systems
- UHF RF front ends operating near 740–746 MHz (regional allocations may vary)
- Private wireless infrastructure, telemetry links, and narrowband transceiver modules
- Receiver designs requiring strong adjacent-channel suppression and stable passband behavior
Allocation and channel plans vary by region. Confirm your operating band and duplexing constraints during selection.
Typical RF placement
- Antenna switch → preselector SAW filter → LNA → mixer/IF chain
- LNA → SAW channel filter → mixer (to protect mixer linearity under blockers)
- Between gain blocks where out-of-band energy must be constrained to preserve dynamic range
FSF-5050-743M Product Overview
FSF-5050-743M is a narrowband RF SAW filter built around a single 743 MHz center frequency. It targets applications that require precise channel selection and interference suppression in the 740–746 MHz UHF band, including point-to-point wireless links and private network infrastructure.
| Part number | Center frequency Fc (MHz) | Passband range (MHz) | 3 dB bandwidth (approx.) | Insertion loss (Typ./Max.) | Package | System impedance (source / load) |
|---|---|---|---|---|---|---|
| FSF-5050-743M | 743 | 740–746 | ~6 MHz | 2.6 dB / 4.5 dB | 5.0 × 5.0 × 1.7 mm SMD, 8-pad | 50 Ω / 50 Ω |
If your design requires a center frequency close to 743 MHz or a different bandwidth configuration, please contact FCom Fuji Crystal. We can evaluate nearby standard parts or custom SAW filter configurations for your system.
Typical Application Scenarios
- 740–746 MHz UHF RF transceiver modules and point-to-point wireless links
- Private wireless networks and fixed wireless access links
- Telemetry, remote control and industrial monitoring RF
- Narrowband radio and medium-power transmitter channel filters
- RF front-end gain and mixer stages requiring high attenuation and controlled group delay
In these scenarios, FSF-5050-743M is typically used as a channel filter or front-end preselection filter, helping suppress adjacent channels, image responses and spurious signals, thus improving receiver sensitivity and overall system reliability.
Design & PCB Layout Recommendations
- Design for a 50 Ω system and use a small number of L/C components for fine matching where necessary.
- Keep RF traces to and from the filter as short as possible and avoid unnecessary vias and sharp corners around the device.
- Connect the ground pads to a solid ground plane and use via arrays to minimize parasitic inductance.
- Respect the maximum ratings (input power around 12 dBm, DC voltage within 10 V) to avoid long-term stress or degradation.
- For noise-sensitive systems, combine this SAW filter with FCom low phase-noise TCXO and high stability OCXO references to build a complete RF and timing solution.
Ordering Code / Options
The part number FSF-5050-743M defines the center frequency and the 5050 SMD package family. If your RF plan is adjacent to 743MHz, you can evaluate nearby standard variants for quicker sourcing.
Selection Path / Upgrade Options
- FSF-5050-713M (lower frequency option in the same 5050 family)
- FSF-5050-757M5 (nearby channel plan option)
- FSF-5050-787M5 (higher frequency option for neighboring allocations)
- FSF-5050-862M5~869M6 (higher band family entry)
For custom frequency, bandwidth, temperature grade, screening, or documentation requirements, share your target specification and expected volume via RFQ.
Documents & Downloads
Package outline (reference)
Frequently Asked Questions (FAQ)
What applications is the FSF-5050-743M 743MHz RF SAW filter suitable for?
How does the FSF-5050-743M perform in passband and stopband?
What impedance and matching conditions are recommended for FSF-5050-743M?
What are the operating temperature and reliability conditions of FSF-5050-743M?
Do you provide samples, MOQ guidance, and lead time information?
Can FCom provide custom frequency or similar SAW filter variants?
Do you provide test reports and production documentation?
Related Products & Further Reading
Technical Support & Certifications
For application engineering support (matching recommendations, placement guidance, and selection across the FSF family), contact Fcom@fujicrystal.com.
- ISO 9001: Certification reference
- ISO 14001: Certification reference
If your program requires specific qualification plans, screening, or documentation deliverables, include those requirements in your RFQ so we can align on scope and timelines.