4-layer HASL rigid-flex PCB
1.Product Description:
The 4-layer lead-free HASL (Hot Air Solder Leveling) flex-rigid PCB merges structural adaptability with robust solder performance, engineered for reliable operation in demanding electronic systems.Constructed with a 4-layer configuration, it integrates rigid FR-4 substrates for mechanical robustness and flexible polyimide (PI) layers for superior bending capability, enabling seamless 3D integration in compact assemblies. Its standout feature is the lead-free HAL surface finish—a RoHS-compliant process that deposits a uniform tin-lead alloy (or tin-silver-copper for lead-free variants) via hot air leveling, ensuring excellent solderability, enhanced wear resistance, and strong adhesion to copper traces.
2.Product Features:
- Rigidity and flexibility combined
- Space saving
- High-density wiring
- Good seismic and anti-interference performance
- Improve the reliability of the system
- Design flexibility
| Application Field |
Typical Usage Scenarios |
Core Adaptation Advantages |
| Smart Wearables |
Screen-mainboard connection for smart watches/bracelets, internal wiring of earbud charging cases |
Thin and light (total thickness down to 0.2mm), bend-resistant, space-saving |
| Industrial Control |
Robot joint sensors, internal connection of PLC controllers |
Vibration-resistant (vibration frequency: 10-2000Hz), high and low temperature resistant |
| Medical Devices |
Portable ultrasound probes, blood glucose meter circuit boards |
Biocompatibility (medical-grade PI), high-precision wiring |
| Automotive Electronics |
In-vehicle cameras, millimeter-wave radar circuit boards |
Humidity and heat resistant (85℃/85%RH for 1000h), electromagnetic interference resistant |
4.FAQ about PCB 4-layer HASL rigid-flex PCB
1.What’s the minimum order quantity (MOQ)?
We accept MOQ 1 piece(5 square meters) for prototypes and small batches. Mass production MOQ depends on complexity.
2.What file formats do you need for quotation?
Please provide Gerber files, IPC-2581, or ODB++, along with BOM and assembly drawing if available.
3.What’s the lead time for mass production?
Typically 15–25 days, depending on layer count, testing requirements, and order volume.
4.Do you offer assembly (PCBA)?
Yes, we provide full turnkey PCBA services, including component sourcing, SMT and testing.
5.Are your products compliant with the quality production standards, and conflict minerals regulations?
Yes, all our materials are RoHS, CE,ISO compliant, and we follow conflict-free sourcing policies.
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HASL Lead Free Rigid Flex PCB 4 Layer Blank Printed Circuit Board For Electronic Systems Images
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