Dual-Layer Circuit Board with Blue Oil OSP Surface Treatment
Double-sided blue oil OSP process, also known as double-sided printed circuit board, is a printed circuit board (PCB) with two-sided circuit connections. In this kind of PCB, the electronic components and circuit layout can be arranged on both sides of the PCB respectively, and the electrical connection of the circuits on both sides is achieved through vias (Vias). This structure greatly increases the functional density of the circuit board, allowing it to implement more circuit connections in a relatively small area.
| Application Field | Typical Devices/Modules |
|---|---|
| Consumer Electronics | Smartphones, tablets, laptops, home appliances (washing machines/ACs), audio-visual devices |
| Industrial Control & Automation | PLCs (I/O modules), motor drives, inverters, temperature/pressure sensor circuits |
| Automotive Electronics | ECUs, BCMs, car infotainment systems, LED headlight drivers, GPS modules |
| Medical Devices | Blood glucose meters, blood pressure monitors, ECG machines, portable patient monitors |
| Telecommunications & Networking | Routers, switches, Wi-Fi/Bluetooth adapters, 4G/5G small base stations (RF modules) |
| Power Electronics | AC-DC adapters, switching power supplies, battery chargers, BMS (for EVs/energy storage) |
| Entry-Level Aerospace | In-flight entertainment systems, cabin lighting controllers, ground radar auxiliary circuits |
How to initiate customized service for double-sided PCBs?
Please send us your:
1. Gerber files (RS-274X)
2. BOM (if PCBA needed)
3. Impedance requirements & stack-up (if available)
4.Test requirements (TDR, network analyzer, etc.)
Normally,Gerber files includes: PCB name,thickness, ink color, surface treatment process, and if SMT processing is required, you can provide a component BOM and reference designation diagram, etc.
We’ll reply within 24 hours with a free quote, DFM report, and material recommendation.

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