4-layer ENIG FR4 PCB is engineered for applications requiring robust current-carrying capacity and precise circuit routing, such as industrial power supplies, automotive control modules, and high-power electronic devices. 그만큼 2온스 (70μm) 구리 두께 on both outer layers enables it to handle high currents (추적 당 최대 15a) while minimizing voltage drop and heat generation—critical for power-hungry components like MOSFETs, IGBTs, and power inductors. 그만큼 3밀스 (75μm) minimum line width/space allows for dense circuit layouts, balancing high-power capability with compact design requirements.
Constructed from FR4 material with a 1.6mm thickness, the PCB offers a stable mechanical foundation and reliable electrical insulation (dielectric constant εr=4.5), suitable for both commercial and industrial environments. 그만큼 동의하다 (전기 전기 니켈 몰입 금) surface treatment with 2.5u” (0.06μm) gold thickness provides an oxidation-resistant finish that enhances solderability and withstands repeated soldering processes. The nickel underlayer (3-5μm) 내구성을 추가합니다, making it ideal for high-reliability applications where contact resistance must remain stable over time.
The manufacturing process combines precision and performance:
- Laser Direct Imaging (LDI) ensures 3mils line/space accuracy, even for complex power/ground plane designs.
- 전해 구리 도금 achieves uniform 2OZ thickness, 단면 분석에 의해 확인.
- 100% AOI inspection identifies surface defects, while flying probe tests verify electrical continuity.
- 열 응력 테스트 confirms the PCB’s ability to withstand reflow temperatures up to 260°C.
Engineers will appreciate the board’s versatility: its 4-layer structure (2 신호 레이어 + 2 전원/지상 비행기) simplifies impedance control for mixed-signal designs, while the thick copper supports heat dissipation in high-power circuits. In industrial automation, it excels in motor control panels exposed to vibration and temperature fluctuations; in automotive systems, it meets AEC-Q200 requirements for reliability in under-hood environments.
By choosing this 4-layer ENIG PCB, customers gain a solution that balances high-current capability with fine-line precision. Its combination of 2OZ copper, 3mils routing, and premium ENIG finish makes it a strategic choice for applications where power density, space efficiency, and long-term reliability are non-negotiable. ISO에 의해 지원됩니다 9001:2015 certification and IPC-6012 Class 2 compliance, this PCB ensures consistent performance from prototype to mass production.
