We all know the demand changes quickly in recent years and this affects your production with lots of order pull ins & push outs and this brings challenges to material inventory management. It's very important to understand the shelf life of the raw material and electronic components including the packed finished PCB with different surface finishes. Let's learn from PCB manufacturer China Honlynn Circuits so you could know when your PCB inventory has to flow to the assembly lines before they expire.

The critical factor of the shelf life of the packed PCB boards including heavy copper pcb is the surface finish. The PCB designers specify the surface finish based on the specific requirement of the product design as well as the physical property features of different surface finish. The primary surface finishes include HASL, immersion gold, OSP, immersion tin, immersion silver, electro-gold plating, electro-tin plating. Now let PCB manufacturer China Honlynn Circuits tells you the shelf life of the packed PCB board including heavy copper pcb. 

1. HASL: 12 months 

2. immersion gold: 12 months 

3. OSP: 6 months 

4. immersion tin: 6 months 

5. immersion silver: 6 months 

6. electro-gold plating: 12 months 

7. electro-tin plating: 6 months 

PCB manufacturer China Honlynn Circuits believes this benefits you for the management of material inventory control.