Metal Wafer Cassette: What It Is and What Buyers Should Confirm?

2026-09-02

Metal Wafer Cassette

 

What Is a Metal Wafer Cassette?

A metal wafer cassette is a precision carrier designed to securely hold, organize, and transport semiconductor wafers during high-temperature processing, with operating temperatures of up to 300°C, depending on the specific material, surface treatment, and process conditions.

 

DOHONE currently offers 6-inch, 8-inch, 12-inch, and customized metal wafer cassettes, with different slot configurations, positioning structures, and equipment interface designs to meet various wafer handling and semiconductor process requirements.

 

What Buyers Should Confirm Before Purchasing a Metal Wafer Cassette?

Once you have confirmed that a metal wafer cassette is suitable for your process, we recommend checking the following points before placing an order or requesting a quotation. Providing this information in advance helps us evaluate compatibility, recommend an existing model where possible, and reduce unnecessary design changes.

 

1. Do You Already Use a Metal Wafer Cassette?

If you currently have a metal wafer cassette in use, please provide the existing drawing when sending your inquiry.

With the original drawing, we can compare the key dimensions, slot structure, positioning features, and equipment interface, and then check whether one of our existing designs can be used or modified.

 

2. Does the Metal Cassette Need to Interface with a Plastic Wafer Cassette?

Some production processes require wafers to be transferred directly between a plastic wafer cassette and a metal wafer cassette.

If this interface is required, please provide the drawing or dimensional information of the plastic cassette. This allows us to evaluate the locating pins, transfer position, cassette height, and other matching features to ensure smooth wafer transfer.

 

3. What Wafer Size Will the Cassette Hold?

Please confirm the wafer diameter before selecting the cassette.

Common configurations include:

  • 6 inch / 150 mm wafers
  • 8 inch / 200 mm wafers
  • 12 inch / 300 mm wafers

The wafer size directly affects the cassette dimensions, slot design, structural strength, and equipment interface.

 

4. What Top and Bottom Structure Is Required?

Different equipment may require different cassette positioning structures.

Please confirm whether the cassette should use a top plate, bottom plate, H-Bar structure, or another customized positioning design.

For equipment-mounted applications, the bottom structure is particularly important because it determines how the cassette is located and secured inside the machine.

 

5. What Are the Required Slot and Overall Dimensions?

Please confirm whether your process or equipment has specific requirements for:

  • Slot width and Pitch;First slot position;Number of slots
  • Overall cassette dimensions
  • Wafer loading position

These dimensions should match both the wafer handling requirements and the equipment interface. If a drawing is available, providing it during the initial inquiry can significantly improve the accuracy of the technical evaluation.

 

6.Is an OHT Handle Required for Automated Handling?

If the cassette will be used in an automated production line or OHT handling system, please confirm whether an OHT-compatible handle or other automation interface is required.

Metal Cassette Metal Cassette

The handle structure, positioning point, and overall cassette geometry should be evaluated together with the automation equipment to ensure reliable pickup, transfer, and placement.

 

Providing the above information allows us to evaluate whether an existing metal wafer cassette can meet your requirements or whether a customized design is necessary.

 

How to Choose Between a Standard and Custom Model?

We normally start by comparing the customer drawing or existing cassette with our current models. If the critical dimensions match our standard models, you can select directly from our existing product range. Standard models are normally kept in stock, allowing us to offer a shorter lead time and a more competitive price compared with fully customized designs. If they do not match, our engineering team reviews key dimensions including slot geometry, overall footprint, automation interface, thermal expansion allowance before releasing a custom design quotation.

 

Send your wafer size, slot count, pitch and drawing for model matching. DOHONE can first compare your requirement with existing models and then confirm whether a standard, modified or fully custom solution is required.

 

Written by DOHONE Engineering Team

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