Our technologies for your rapid development success
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Overview of technologies

In the following, technology steps for the package production are presented. Individual technology steps can quickly and flexibly be adjusted to the package types desired by the customer.

Wafer - stretched wafer

stretched wafer stretched wafer

In the first step, the delivered wafers are applied on an elastic adhesive film with which it is possible to further handle the wafers in a safe way during the following process steps. Upon customer request we directly return the sawed stretched wafers on frames or in a clamping ring to the customer for further processing. Wafers are typically processed in a size between 4'' to 8''. It also is possible to process wafer segments.

Wafer - abrasive cutting (Dicing)

sawed wafer sawed wafer

In the second process step, the wafer is sawed with high-precision. Wafers can subsequently be cleaned with an integrated washing station. The individual chips are afterwards separated from one another and can separately be further processed. A processing of wafers up to 8" is possible.

Leadframe

leadframe leadframe

We have most diverse leadframes which can be used for the assembly. Upon customer request, individual developments can also be processed.

Materials for leadframes

Possible examples for leadframes:

Material Application
Wieland K65 Standard material
...
Wieland K75

for application of components
in the area of magnetic fields

View less …

Chip bonding

glue droplets on leadframe glue droplets on leadframe

In the next step, a glue droplet is applied to the leadframe. With the chip bonder the chips are fully automatically withdrawn from the 6“- and 8“-frames of the stretched, sawed wafers and attached to the leadframe. Subsequently the adhesive is hardened in the temperature oven.

Wire bonding

wire bonding: chips - leadframe wire bonding: chips - leadframe

Wire bonding is executed fully automatically. In general, work is carried out with fine wires of gold or aluminum in a thickness between 20µm to 50µm.

 

Shear- and pull test

pull test pull test

For quality control, bonding process is examined during shear- and pull test and a high and consistent quality level is ensured during production.

Molding

molded leadframe molded leadframe

After release the leadframe with its bonded chips undergoes an insert molding with epoxy resin by use of a multiplunger molding system. The process is fully-automatic and absolutely free of flashes and voids. A wire sweep does not occur due to the short injection ducts.

Marking with laser and Dambar-Cutting

marking with laser component marking with laser

Marking is performed with a fiber laser which is flexibly and quickly programmable  for the desired use.

After marking the packages the next step is Dambar-Cutting.

Tin Plating

leadframe after tinning leadframe after tinning

In preparation of Tin Plating the leadframes undergo several steps within our chemistry lab. These include the cleaning, activating, tinning and drying of leadframes. Thereby, processes are strictly monitored in order to enable a constantly high level of quality. Lead-free matt tin is used for the coating.

For the prevention of whisker formation a further tempering takes place after tinning.

Bending and isolation

bending and isolating bending and isolation

Bending of electric components and their isolation from the leadframe is fully automated performed on a trim and form machine. Subsequently, the components are automatically separated into tubes or trays. In an additional work step the transfer into tape&reel is also possible.

Packing of products

components in tube Products in tube

The finished components can, upon customer request, be delivered in tubes, trays or in tape & reel. In our delivery terms you will find more details.