How to Query the Wafer Origin Information of STMicroelectronics Chips?

When declaring chips for customs, customs usually requires the provision of wafer origin information (Wafer Origin). However, many people find that the official website of STMicroelectronics does not directly provide this information. So, is there another way to accurately determine the wafer origin of the chip?

The answer is: you can determine it through the chip’s packaging label (Label) or chip marking (Marking).

1. Identifying Wafer Origin through Chip Packaging Label

What is a chip packaging label?

When chips are shipped, a label is usually affixed to the outer packaging box or bag, containing important information such as the chip model and trace code (Trace Code). Among these, the trace code is key, as it contains the wafer factory code and packaging test factory code.

How to determine wafer origin through the code?

The wafer factory codes are as follows (if any codes are missing, please contact me for a free lookup):

Code	Location	Code	Location
VQ	FRANCE CROLLES CRL300	9R	TAIWAN TSMC TAIWAN FAB 14
VJ	FRANCE CROLLES	98	TAIWAN TSMC TAIWAN WAFER FAB 8 / WF8
VG	FRANCE ROUSSET 8”	93	TAIWAN TSMC TAIWAN WAFER FAB 3 / WF3
V1	ITALY AGRATE AG8	9C	SINGAPORE TSMC SINGAPORE WAFER FAB SSMC
VA	ITALY AGRATE R2	9U	USA TSMC USA WAFER FAB 11
V5	ITALY CATANIA M5 8” / CT8
VK	ITALY ST Agrate 300
V6	SINGAPORE ANG MO KIO / AMK 6
VC	SINGAPORE ANG MO KIO 8”/ AMK 8

Packaging test factory codes (if any codes are missing, please contact me for a free lookup):

Code	Location	Code	Location
9Y	MALAYSIA CARSEM M/S	HT	KOREA SIGNETICS S2
99	MALAYSIA MUAR	HS	KOREA SIGNETICS S3
9H	MALAYSIA STATS CHIPPAC	HP	KOREA AMKOR ATK
GK	CHINA SHENZHEN	HH	KOREA STATS CHIPPAC
GE	CHINA ASE WEIHAI	7B	PHILIPPINES AMKOR ATP
GQ	CHINA STATS CHIPPAC	8N	SINGAPORE STATS CHIPPAC
GH	CHINA STATS CHIPPAC	22	MALTA
AA	TAIWAN ASE	CZ	MOROCCO

2. Identifying Wafer Origin through Chip Marking

What is chip marking?

Chip marking refers to the identification printed on the front of the chip, which contains hidden wafer and packaging location information. The way this information is marked is relatively standard and can be used to identify the production process.

How to read wafer origin information from the marking?

The marking usually includes:

【PP】 represents the packaging test factory code, typically displayed using country abbreviations. For example, MYS represents MALAYSIA;

【WX】 represents the wafer factory code, which is consistent with the wafer factory code on the packaging label.

The position of the marking content varies slightly depending on the packaging type; finding the content at the positions of 【PP】 and 【WX】 will reveal the wafer factory location.

3. Other Methods to Determine Wafer Origin

Method 1: Refer to the PCN Document (Product Change Notice)

PCN is a product change notice issued by ST, which often contains production information such as wafer origin and packaging location. You can check the PCN through digikey or mouser.

Method 2: Contact Us

If you have specific chip models and packaging information, you can also contact us directly, and we can help you look it up for free.

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