Choosing the right fixture is essential for ensuring efficient mass production. As technology continues to advance rapidly, market demands are constantly evolving, and competition among products has become increasingly intense. The product lifecycle is getting shorter, and there's a growing trend toward producing multiple varieties in smaller batches. To meet these changing requirements, various testing and burning fixtures are necessary to support large-scale manufacturing.
Why are so many test and burn fixtures needed?
From a subjective perspective, different product functions require chips with specific functionalities to fulfill their intended purposes.
On the objective side, original semiconductor manufacturers often differentiate their products by using different chip packages, which helps manage distinct functions effectively.
Common chip packages include:
- **SOP (Small Outline Package)** – featuring two rows of leads on either side.
- **QFP (Quad Flat Package)** – having four sides with leads.
- **QFN (Quad Flat No-leads)** – similar to QFP but without visible leads.
- **BGA (Ball Grid Array)** – featuring solder balls instead of traditional leads.
As shown in the images above, a single function chip can come in various package types and sizes, each designed for different applications and manufacturing needs.
With so many chip sizes available, it’s crucial to have a versatile burner that can accommodate different packages through the use of appropriate fixtures. This allows for more streamlined and efficient production processes. For example, the SmartPRO T9000-PLUS supports multiple package types through its adaptable design.
To make the right choice, consider the following steps:
1. **Understand the "three dimensions"** of the chip you're burning – size, lead pitch, and thickness.
2. **Perform tolerance testing** to ensure compatibility.
3. **Choose the contact type** that best suits your application.
For instance, some configurations might look like this:
[Image: Example 1]
Or like this:
[Image: Example 2]
The programming interface of the burner is designed to work with a wide range of chip packages. It's recommended that mass production customers use the adapter suggested by the burner manufacturer for optimal performance. Using an untested or incompatible adapter may result in poor contact, damaged chips, or lower programming success rates. Always prioritize reliability and compatibility when selecting fixtures for mass production.
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