HilPCB Services
PCB Surface Finish Options
HilPCB helps teams choose PCB surface finishes that fit solderability, storage window, assembly process, contact performance, and long-term reliability targets across prototype and production builds.
- ISO 9001:2015Quality System Certified
- IPC-6012 Class 3High-Reliability Build
- UL ListedNorth America Compliance
- MESPer-Batch Traceability
01 ยท Service
Prototype Capability Matrix
03 ยท Common Surface Finish Paths
Common Surface Finish Paths
- 01ENIG for flat-pad performance, fine-pitch assembly, and broad commercial use
- 02OSP for cost-sensitive builds with controlled handling and assembly timing
- 03HASL for robust mainstream programs where process fit and economics are priorities
- 04ENEPIG, immersion silver, or related finishes when contact and reliability needs are more specific
04 ยท How Finish Choice Supports the Build
How Finish Choice Supports the Build
- Surface finish affects solderability, coplanarity, shelf life, and downstream assembly behavior
- Fine-pitch SMT, gold-contact, or repeated handling needs can change which finish is appropriate
- Finish selection is reviewed together with copper weight, pad design, and assembly route
- Prototype and production plans stay more stable when finish strategy is confirmed early
05 ยท Surface Finish Review Workflow
Surface Finish Review Workflow
- 1
Submit Files
Share the design use case, assembly intent, storage expectation, and end-use environment
- 2
Engineering Review
Engineering review checks pad geometry, assembly method, reliability goals, and cost constraints
- 3
Baseline Lock
Recommended finish path is aligned before fabrication release
- 4
Fabrication
Approved jobs move into production planning, inspection, and follow-on build support
06 ยท Prototype RFQ Checklist
Prototype RFQ Checklist
07 ยท PCB Surface Finish FAQs
PCB Surface Finish FAQs
What PCB surface finishes does HilPCB support?
HilPCB supports ENIG, OSP, HASL, ENEPIG, immersion silver, and other surface-finish options depending on the assembly process, reliability target, and end-use requirements.
How do I choose between ENIG and OSP?
ENIG is often chosen for flat-pad performance and broader assembly tolerance, while OSP may fit cost-sensitive programs with controlled handling and assembly timing. The right choice depends on process and product requirements.
Does surface finish affect SMT assembly quality?
Yes. Surface finish affects solderability, pad condition, and process fit, so it is reviewed together with assembly method and design details during engineering evaluation.
Can specialty finishes be reviewed for gold-contact or higher-reliability needs?
Yes. Options such as ENEPIG or other specialty finishes can be reviewed when the design needs specific contact behavior, wear performance, or reliability characteristics.
Can finish planning continue into production quoting?
Yes. Once the finish strategy is aligned, the project can move directly into quoting, build planning, and follow-on manufacturing.
Ready to Send a Prototype Build?
Upload Gerber / ODB++ and receive a review plus quotation within 24 hours.