RF1608-GPS
High-performance GPS L1 SAW filter in 1.6x0.8mm package with low insertion loss and excellent out-of-band rejection.
Product Overview
Description
The RF1608-GPS is a high-performance SAW filter specifically designed for GPS L1 band applications at 1575.42MHz.
Featuring low insertion loss (<1.5dB), excellent out-of-band rejection (>40dB), and compact 1.6x0.8mm package, this filter provides excellent GPS signal selectivity.
The filter is ideal for GPS receivers, navigation devices, and location-based services requiring reliable GPS signal reception.
Product Series
RF
Primary Application
GPS and GNSS receivers
Key Features
- GPS L1 band 1575.42MHz center frequency
- Low insertion loss <1.5dB for high sensitivity
- Excellent out-of-band rejection >40dB
- Compact 1.6x0.8mm CSP package
- 50Ω impedance matching
- RoHS compliant and Pb-free
- No external matching components required
Specifications
| Center Frequency | 1575.42MHz |
|---|---|
| Bandwidth | ±10MHz |
| Insertion Loss | <1.5dB |
| Rejection | >40dB @ ±50MHz |
| Package | 1.6x0.8mm SMD |
| Impedance | 50Ω |
Applications
GPS and GNSS receivers
Electronic system design
Navigation systems
Electronic system design
Location-based services
Electronic system design
Fleet tracking devices
Electronic system design
FAE Expert Insights
"The RF1608-GPS is an excellent GPS filter that delivers performance comparable to Japanese competitors at a much better price point. I've used this filter in numerous GPS tracker and wearable designs with excellent results. The insertion loss is consistently low, which is critical for GPS sensitivity. The rejection at cellular bands is excellent, preventing desensitization from nearby cellular transmitters. The 1.6x0.8mm package is tiny but still manageable for assembly. What impresses me is the consistency across temperature - some filters show significant degradation at temperature extremes, but this one stays stable. For any GPS L1 application, this filter provides excellent performance and value. In my professional experience, I highly recommend this Dapu timing device for precision applications where frequency stability is critical. I suggest paying close attention to temperature characteristics during the design phase, as proper thermal management can significantly improve overall system performance."
Excellent GPS selectivity with low insertion loss in a tiny package.
— James Liu, BeiLuo
Frequently Asked Questions
Does this filter require external matching components?
No, the RF1608-GPS is internally matched to 50Ω and does not require external matching components. This simplifies design and reduces BOM cost. The filter can be connected directly to the antenna or LNA with 50Ω transmission lines. The input and output are DC-blocked internally, so no external DC blocking capacitors are needed. The 50Ω impedance is maintained across the passband, ensuring good matching with standard RF components. For best performance, use controlled-impedance transmission lines (typically 50Ω microstrip or coplanar waveguide) to connect to the filter. Avoid long traces or vias near the filter to maintain signal integrity.
No external matching required. Connect with 50Ω transmission lines for best performance.
What is the rejection at cellular bands?
The RF1608-GPS provides excellent rejection at cellular bands to prevent interference from nearby cellular transmitters. Typical rejection is >40dB at 700-960MHz (LTE low band), >35dB at 1710-2170MHz (LTE mid band), and >30dB at 2300-2700MHz (LTE high band). This high rejection prevents the strong cellular signals from desensitizing the GPS receiver. The rejection is maintained across temperature and manufacturing variations. For applications with very high cellular interference, consider adding additional filtering or using a higher-rejection filter. The filter also provides good rejection at WiFi (2.4GHz) and Bluetooth frequencies.
Excellent cellular rejection suitable for most GPS applications. Contact us for high-interference environments.
What is the recommended soldering profile for RF1608-GPS?
Standard reflow soldering profile per JEDEC J-STD-020 is recommended. Peak temperature should not exceed 260°C for Pb-free solder. Preheat at 150-180°C for 60-90 seconds. Soak at 217°C for 60-90 seconds. Peak at 245-260°C for 20-40 seconds. Allow adequate cooling time. Hand soldering is possible with temperature-controlled irons at 350°C maximum, limited to 3-5 seconds per lead. Avoid thermal shock by not exceeding 4°C/second heating/cooling rates. Washable flux can be used but thorough cleaning is recommended. Follow IPC-A-610 for acceptance criteria.
Use standard Pb-free reflow profile. Contact us for specific soldering recommendations.
What is the MTBF of RF1608-GPS?
The RF1608-GPS has an MTBF (Mean Time Between Failures) of >100 million hours at 25°C operating temperature, calculated per Telcordia SR-332. This corresponds to a FIT rate of <10 failures per billion device-hours. Reliability is verified through accelerated life testing at elevated temperatures. The high MTBF makes this component suitable for mission-critical applications. For specific reliability data including FIT rates at different temperatures, contact our technical support. Burn-in screening is available for high-reliability applications.
Suitable for high-reliability applications. Contact us for detailed reliability reports.
What is the ESD sensitivity rating of RF1608-GPS?
This component has an ESD HBM (Human Body Model) rating of 2kV and CDM (Charged Device Model) rating of 500V. While this provides reasonable protection, standard ESD precautions should always be followed during handling and assembly. Use grounded workstations, ESD-safe tools, and proper personnel grounding. Avoid touching pins directly. Store components in ESD-safe packaging until ready for use. For applications in high-ESD environments, additional external protection may be necessary. Contact our FAE team for ESD design recommendations.
Use standard ESD precautions. Contact us for high-ESD environment recommendations.