Contents
What is OSP PCB?
Organic solderability preservative or OSP is a method for coating of printed circuit boards. It uses a water-based organic compound that selectively bonds to copper and protects the copper until soldering. The compounds typically used are from the azole family such as benzotriazoles, imidazoles, benzimidazoles.
What is OSP layer?
OSP is short for “organic solderability preservatives”, and it’s also called anti-tarnish. It refers to a layer of organic finish generated on clean and bare copper by adsorption. On the one hand, this organic finish is capable of stopping copper from being oxide, thermal shock or moisture.
What is shelf life of PCB?
Depending upon the solder used and the specific soldering method, the shelf life for your boards can be as long as 10 years.
What is ENIG PCB finish?
ENIG is a two layer metallic coating of 2-8 μin Au over 120-240 μin Ni. The gold protects the nickel during storage and also provides the low contact resistance required for the thin gold deposits. ENIG is now arguably the most used finish in the PCB industry due the growth and implementation of the RoHs regulation.
How do you store PCBs?
Storing PCBs All PCBs should be stored in a moisture barrier bag (MBB) that’s vacuum sealed. In addition to the bags, Desiccant Packs and Humidity Indicator Cards must be used for proper moisture protection. This ‘package’ is also known as a dry package.
What are the advantages and disadvantages of PCB?
Advantages of PCB :
- PCBs has a low cost, mass production can be achieved at a lower cost.
- It is Re-workable.
- Widely available.
- Excellent shelf life.
- This board gives low electronics noise.
- Compact size and saving of wire.
- Inspection time is reduced because PCBs eliminates the probability of error.
What is the disadvantage of using a PCB?
Easy to Cause Handling Damage. Process Uses a Carcinogen (Thiourea) Exposed Tin on Final Assembly can Corrode.