What is the shelf life and workshop lifespan of PCBs with different surface treatments-深圳市海博精密电路有限公司

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PCB surface treatment

What is the shelf life and workshop lifespan of PCBs with different surface treatments

Surface Treatment	Storage conditions and shelf life (from production date)		Storage conditions and workshop lifespan after unpacking
	Storage situation	quality guarantee period	Storage situation	Workshop Life
immersion silver	Temperature ≤ 27 ℃, humidity ≤ 60%, no acid, alkali or organic solution	6 months	Temperature ≤ 27 ℃, humidity ≤ 60%, no acid, alkali or organic solution	≤ 48 hours
(OSP) Organic Solderability Protective Agent	Temperature ≤ 27 ℃, humidity ≤ 60%, no acid, alkali or organic solution	6 months	Temperature ≤ 27 ℃, humidity ≤ 60%, no acid, alkali or organic solution	≤ 24 hours
ENIG，ENEPIG， gold-plating	Temperature ≤ 27 ℃, humidity ≤ 60%, no acid, alkali or organic solution	12 months	Temperature ≤ 27 ℃, humidity ≤ 60%, no acid, alkali or organic solution	≤ 24 hours
Tin immersion	Temperature ≤ 27 ℃, humidity ≤ 60%, no acid, alkali or organic solution	6 months	Temperature ≤ 27 ℃, humidity ≤ 60%, no acid, alkali or organic solution	≤ 24 hours
(HASL) Hot air soldering and leveling machine	Temperature ≤ 27 ℃, humidity ≤ 60%, no acid, alkali or organic solution	12 months	Temperature ≤ 27 ℃, humidity ≤ 60%, no acid, alkali or organic solution	≤ 24 hours

Attention: For HDI boards, if the storage time exceeds three months but is less than six months, the PCB needs to be baked before production and assembled within 8 hours

Silver immersed PCB baking temperature 120 ± 5 ℃, 2 hours, stacking height ≤ 2.5cm;

Whole board nickel gold PCB baking temperature: 120 ± 5 ℃, 2-4 hours, stacking height ≤ 2.5cm;

The baking temperature for OSP surface treatment and selective OSP surface treatment PCB is 120 ± 5 ℃, 2 hours, and the stacking height is ≤ 2.5cm.

The oven must be kept clean and free of volatile gases such as corrosive chemicals such as acids, alkalis, and organic solvents.

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