This 4-layer FR4 PCB is specifically designed for gas analyzer applications, where precision signal conditioning, thermal stability, and EMI resistance are critical for accurate gas concentration measurement. Avec des dimensions de 108.00mm×115.00mm et un 1.5mm d'épaisseur, the board provides a balanced foundation for integrating sensor interfaces, signal amplifiers, and data processing circuitry in compact gas analyzer enclosures. Construit à partir de Matériau FR4, it offers reliable electrical insulation (constante diélectrique εr = 4,5) and mechanical durability, suitable for operation in industrial environments with varying temperatures and humidity.
Le 1.5Oz (52μm) épaisseur de cuivre on all layers ensures efficient power distribution and signal routing, supporting moderate current loads (up to 12A per trace) while minimizing voltage drop. Le 4-architecture de calque (2 Couches de signalisation + 2 ground/power planes) separates analog and digital domains, reducing cross-talk and EMI—essential for maintaining the sensitivity of gas sensor signals (often in the microvolt range). Le Masque de soudure LPI verte protects circuitry from environmental contaminants, Pendant que le Écran à soigneux blanc provides clear component marking for assembly and maintenance in complex gas analyzer layouts. Le HASL (Hot Air Solder Leveling) surface finish creates a uniform, solder-friendly coating (lead-free SAC305 alloy), ensuring reliable connections for fine-pitch components (down to 0.4mm pitch) and through-hole sensors.
- EMI-Shielded Signal Paths:
- Ground planes isolate analog sensor signals from digital noise, critical for ppm-level gas detection accuracy.
- Differential routing for Wheatstone bridge sensor interfaces to minimize common-mode interference.
- Gestion thermique:
- Thermal vias connect power components to ground planes for efficient heat dissipation, maintaining sensor stability in temperature-sensitive gas analysis.
- Sensor Interface Optimization:
- Low-noise power supplies (±1% ripple) for electrochemical and infrared gas sensors.
- Protection circuitry (TVS diodes, fuses) against transient spikes from sensor excitation voltages.
- 2×2 Panel Format:
- Each panel contains 4 identical boards, reducing production costs and enabling efficient mass assembly for gas analyzer OEMs.
- Precision Fabrication:
- Imagerie directe laser (LDI) for 75μm line/space accuracy in sensor signal traces.
- Electrolytic copper plating with ±5% thickness uniformity across all layers.
- Tester les protocoles:
- 100% AOI inspection for solder mask coverage and silkscreen clarity.
- Test de sonde volante pour la continuité et l'isolement électriques (≥ 100mΩ).
- Thermal cycling (-40° C à + 85 ° C, 100 cycles) to verify reliability in harsh industrial environments.
- Conformité:
- Meets IPC-6012 Class 2 standards for industrial electronics.
- RoHS compliant for lead-free manufacturing.
- Industrial Safety Monitors:
Controls for combustible gas detectors (Par exemple, methane, propane) in oil refineries, chemical plants, and mining sites.
- Environmental Monitoring:
Processes data from air quality sensors (CO, NO2, O3) in smart cities or research laboratories.
- Medical Diagnostics:
Supports breath analysis equipment for non-invasive disease detection in healthcare settings.
- Contrôle des processus:
Optimizes gas mixtures in semiconductor manufacturing, food packaging, or pharmaceutical production.
By integrating 4-layer EMI shielding, 1.5Conductivité en cuivre oz, and gas analyzer-specific design features, this PCB enables engineers to build reliable, accurate gas detection systems. The 2×2 panel format balances production efficiency with design flexibility, while HASL finish ensures cost-effective soldering for high-volume manufacturing. Soutenu par ISO 9001:2015 certification, this PCB delivers consistent performance for gas analyzers where measurement precision and system reliability are non-negotiable.
