The batch of NXP screen printing is usually marked in the number, letter, symbol and other characters on the product, generally located in the product pad, chip back, front or side position. Screen printing batch number can help users understand the production date and production batch of the product.
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Here's how to view it:
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1. For the chip, the general batch number is printed in the identification area on the front or back of the chip, and the text or characters smeated on the chip are usually small and need to be observed with tools such as a microscope;
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2. For the PCB board, the batch number can be viewed on the screen printing of the pad, PCB backplane or patch components. Under normal circumstances, the pad and the front and back of the PCB board may appear silkscreen batch number;
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3. For finished products, the silk screen batch number can be viewed at the screen printing on the PCBA board, the screen printing on the surface of the electronic components, etc.
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It should be noted that when viewing the silk screen batch number, you must be careful and carefully observe to avoid possible mistakes and wrong judgments to ensure that you get the correct batch information.