A-TECH tin hasl pcb bulk production at discount

Company Advantages
1. lead free hasl pcb is applied to ensuring hasl pcb to be of great durability and stability. It is 100% produced in accordance with IPC-6012 & IPC-A-600F standards
2. High quality, low price and quick delivery are the magic weapons for A-TECH CIRCUITS Co., Ltd. to win the market. It is offered with low dielectric loss
3. The excellent properties in lead free hasl pcb make hasl pcb have wider applications.
4. Even in extreme condition, our hasl pcb can work normally. It has low water absorptivity in the damp environment
5. Product assessment is conducted before access to the market. Its solderable surface is protected from the oxidation

Immersion Tin, or Chemical Tin, it’s a RoHS Compliant metallic finish deposited by a chemical displacement reaction that is applied directly over the basis metal of the circuit board, the immersion Tin protects the underlying copper from oxidation over it’s intended shelf life, copper and tin however have a strong affinity for one another, the diffusion of one metal into the other will occur inevitably, directly impacting the shelf life of the deposit and the performance of the finish. The negative effects of tin whiskers growth are well described in industry related literature and topics of several published papers.

The typical thickness of Immersion Tin is ≥1.0UM and the shelf life is 6 months. The cost of Immersion Tin is more expensive than HASL but less expensive than Immersion Gold and close to Immersion Silver. Similar to Immersion Silver, Immersion Tin is also sensitive in handling and storage, it requires PCB manufacturers to control and pack PCBs with Imm Tin more carefully.

The advantages of Immersion Tin

● Excellent flatness
● Mid range cost for lead free finish
● Good for fine pitch / BGA / smaller components
● Top choice for press fit technology
● Reworkable

The disadvantages of Immersion Tin

● Very sensitive to handling – gloves must be used
● Exposed Tin on final assembly can corrode
● Not good for multiple reflow/assembly processes
● Aggressive to soldermask – soldermask dam should be more than 5mil
● Baking prior to use can have a negative effect

A-TECH is capable of using Immersion Tin, we make the profile and electrical test before the process of Immersion Tin finish, and we use papers to separate each piece of boards to avoid scratches during package and transportation.

Company Features
1. A-TECH CIRCUITS Co., Ltd. is a company specialized in the production and processing of hasl pcb .
2. With ever increasing needs for high quality, A-TECH CIRCUITS Co., Ltd. has adopted advanced technology to guarantee.
3. The satisfaction of our customers is A-TECH's ultimate goal. Inquire now!