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AUTRONICA EAC-4 PCB CARD is a circuit board specially designed for marine electronic systems. It is made of insulating material and covered with conductive lines on the surface to fix electronic components and provide electrical connections. It is the core component of marine electronic equipment and plays a key role in mechanical support and electrical connection.
Technical characteristics of marine PCB
High reliability requirements: The marine environment is complex and needs to cope with extreme conditions such as high humidity, salt spray corrosion, vibration shock and temperature changes. Therefore, marine PCBs usually use high-reliability materials (such as FR-4, polyimide substrates) and processes (such as immersion gold, OSP surface treatment) to ensure long-term stable operation.
Multilayer and high-density design: To meet the needs of ship electronic systems for miniaturization and integration, PCBs often use multilayer designs (such as 6 layers, 8 layers or even higher), and cooperate with high-density interconnect (HDI) technology to achieve compact layout of complex circuits.
Special functional requirements: Flame retardant and high temperature resistance: Meet UL94 V-0 flame retardant standards, some applications require high temperature resistance (such as above 150°C), anti-electromagnetic interference (EMI): Through shielding layer, grounding design and differential signal wiring, reduce the impact of electromagnetic interference on ship navigation and communication systems.
Corrosion resistance and moisture resistance: Use conformal coating or special packaging process to prevent salt spray and moisture erosion.
Application scenarios of ship PCB
Ship power and control system: Key equipment such as engine control unit (ECU), propulsion system, power distribution system, etc. rely on PCB to achieve signal processing and power control. For example, radar, electronic chart (ECDIS) and autopilot system in ship integrated bridge system (IBS) all require high-reliability PCB support.
Communication and navigation systems: Satellite communications, AIS (Automatic Identification System), GPS and other equipment have extremely high requirements for PCB signal integrity and anti-interference capabilities. High-frequency PCB materials (such as Rogers and Taconic) are often used in RF modules to ensure communication stability.
Safety and monitoring systems: Fire alarm, gas leak detection, structural health monitoring and other systems rely on PCBs for data acquisition and transmission. For example, the sensor PCB in the ship’s ballast water treatment system must have corrosion resistance and long-term stability.
Design challenges for ship PCBs
Environmental adaptability design: It is necessary to pass salt spray tests, damp heat tests and vibration tests (such as IEC 60945 standards) to ensure that PCBs can operate reliably in harsh environments, for example, using sealed packaging, edge reinforcement and anti-vibration connector design.
Signal integrity and power integrity: High-speed signals (such as Gigabit Ethernet, SerDes) need to optimize impedance matching and crosstalk control, and the power distribution network (PDN) design needs to reduce noise and ensure the stability of sensitive circuits (such as sensors and microcontrollers).
Compliance and certification: The ship PCB must comply with international standards (such as IEC 60945, DNV-GL, ABS classification society certification) and industry specifications (such as IPC-6012D). For example, military ship PCBs may need to meet military standards such as MIL-PRF-31032.
Future development trends
Intelligence and modularity: As the level of ship automation increases, PCBs will integrate more sensors and smart chips (such as AI edge computing modules) to achieve fault prediction and autonomous maintenance. Modular design (such as System-in-Package, SiP) will simplify the assembly and upgrade of ship electronic systems.
Green and lightweight: Lead-free soldering, low-halogen materials and recyclable substrates are used to comply with environmental regulations (such as RoHS, REACH), and lightweight design (such as thin PCB, aluminum substrate) helps reduce ship energy consumption.
5G and Internet of Things (IoT) Integration: Ship PCB will support 5G communication and IoT devices to achieve remote monitoring, data analysis and intelligent decision-making. For example, the equipment health management system (PHM) in smart ships relies on high-speed PCBs to achieve real-time data transmission.
Summary
The ship printed circuit board is a core component of the ship’s electronic system, with high reliability, multi-layer board and high-density design, special functional requirements and other characteristics. Its application areas cover key systems such as power control, communication navigation, and safety monitoring. The production process includes design, board preparation, drilling, etching, lamination, surface treatment and testing to ensure that the PCB meets the stringent requirements of ship electronic systems. With the development of ship intelligence and greening, ship PCB will develop in the direction of higher performance and more environmental protection.
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