Exceeding Customer Expectations, Achieving Zero Defect Goals
Product life cycle and continuity of supply are important to both Southchip and our valued customers. Southchip is committed to extending the life of our products for our customers and has developed strategies and internal policies to fulfill this commitment.
To help customers make decisions when selecting products, Southchip categorizes the product status of each product as "Pre-sale", "Active", "Not Recommended for New Designs (NRND)", "Last Buy Date" or "EOL". To reinforce Southchip's commitment to product longevity, Southchip classifies a product as NRND in rare circumstances, such as when there is an issue that may affect product quality or the ability to manufacture the product in the long term.
Pre-sale: The product is avaible for sale as an experiment pruduct, but has not yet been mass-produced. The product is subject to change during the engineering validation process prior to mass production.
Active: The product is released to the market and available for purchase. Newer alternatives to some products are available.
Last Time Buy: The date of the customer's last purchase before the product is completely discontinued.
For more information about Southchip's product change management, EOL and business continuity plans, please contact us.
The shelf life of semiconductor products is determined by multiple factors, including: material composition of device components, manufacturing conditions, Moisture Sensitivity Level (MSL), utilization of Moisture Barrier Bags (MBB), desiccant quantity, and end-user storage environments.
We strongly advise customers to comprehensively evaluate these factors when managing storage protocols and assessing shelf life expectations for SouthChip products.
SouthChip implements rigorous controls throughout manufacturing and storage processes. For moisture-sensitive devices, we use dry packaging that includes desiccants, Humidity Indicator Cards (HIC), and Moisture Barrier Bags (MBB) to ensure full compliance with industry-standard shipping specifications and to guarantee shelf life integrity.
The product shelf life period commences from the date of factory packaging.
Customer handling and storage practices are critical to maintaining SouthChip products within specified shelf life parameters. Users must consult MSL labeling on product packaging for allowable environmental exposure durations and mandatory storage requirements.
Important Notice:
For additional information regarding shelf life management, please contact us.
After the product is officially launched, Southchip will focus on continuous improvement strategies, so it may need to modify, update or discontinue product/process.
During the process of change, Southchip will refer to industry standards J-STD-046,ZVEI, and will inform customers of changes that affect form, fit, or function of the product or adversely affect the quality or reliability of the product.
The PCN provided by Southchip will include the following information:
Notification Date | Implementation Date | PCN number
Proposed 1st Ship Date | Sample requests accepted until
Change Type | Description of Change | Reason for Change | Change Classification
Anticipated impact on Form, Fit, Function, Quality or Reliability (positive / negative)
Products Affected | Change Identification (this section will describe how to identify the changed product) | Qualification Data or Summary
Notice of Change for Automotive Component Products, Southchip Semiconductor follows the ZVEI standard and uses the ZVEI recommended PCN/Information Note to notify customers.
Product Discontinuance/End-of-Life (EOL) Notice (PDN)
The product discontinuance/end-of-life (EOL) process at Nexperia follows J-STD-048 standards. Southchip strives to avoid discontinuing products. We will reserve a 6-month last-time-buy period and a 12-month last-time-ship period for product discontinuation/end-of-life. For automotive products, the standard for product discontinuation is longer, with a 12-month last-time-buy period and an 18-month last-time-ship period reserved. In rare cases, it may be necessary to create an accelerated EOL schedule. In such cases, we will communicate with affected customers the final purchase and delivery dates.
The EOL notice includes:
Detailed Description
PDN Number
Contact information
Last Time Buy
Last Time Ship
Products Affected
Replacement Products (if applicable)
For more information on product PCN/PDN, please contact us.
Southchip is dedicated to offering one-stop chip solutions for customers.
To reduce the risk of counterfeit products, we strongly advise customers to purchase semiconductor products only through Southchip's direct sales channels or authorized distributors.
Key Risk Warning :
The appearance, packaging, and labeling of counterfeit products may be almost identical to those of genuine Nanxin products. However, the manufacturing process, packaging specifications, device identification specifications, storage conditions, or logistics control of these counterfeit products do not comply with Southchip standards, thus bringing significant performance, safety, and reliability risks.
Authorization Compliance Notice:
Semiconductor products purchased through unauthorized channels (including agents, independent sellers, or online markets/"gray markets") will be considered as:
✓ Counterfeit or unreliable products
✓ No quality - guarantee service will be provided
✓ No warranty service will be provided
✓ No customer support will be provided
Southchip Semiconductor Technology (Shanghai) Co., Ltd. and its subsidiaries (“SOUTHCHIP”) provides technical and reliability data (including datasheets), design resources (including reference designs, software), application or other design advice and other resources (“Resources”) “AS IS” AND WITH ALL FAULTS.
The Resources are intended for skilled developers designing with SOUTHCHIP’s products. SOUTHCHIP may provide but DISCLAIMS WARRANTY FOR SOUTHCHIP’s technical support or design services for the customers. Customers are solely responsible for (1) selecting and using the appropriate SOUTHCHIP’s products for your application, (2) designing, validating and testing your application, and (3) ensuring your application meets applicable standards, and any other safety, security, or other requirements. SOUTHCHIP DISCLAIMS RESPONSIBILITY FOR any claims, damages, costs, losses, liabilities arising out of Customers’ use of the Resources.
SOUTHCHIP’s sample products are provided “AS IS” and only for purposes of designing, validating and testing. SOUTHCHIP reserves the right to make changes, corrections, enhancements, modifications and improvements to SOUTHCHIP’s products and/or to theResources at any time without notice. Customers shall, prior to, mass producing, using or distributing any products of their own that incorporate SOUTHCHIP’s products, obtain the latest relevant information on SOUTHCHIP’s products and thoroughly test such products for purposes of mass production, quality and safety. Use of SOUTHCHIP’s products without a safety design is fully at the risk of Customers, subject only to applicable laws and regulations governing limitations on product liability.
Southchip has been International Organization for Standardization's (ISO) Quality Management System (ISO 9001) certified since 2017.
Southchip has been International Organization for Standardization's (ISO) Road vehicles- Functional safety (ISO 26262) Process certified since 2023.
Advanced Technology, Professional Team
Reliability testing is the key to ensuring excellent performance and long-term stability of products.
Through rigorous testing and validation in various extreme environments, we promise that every analog chip we produce has superior performance and long-lasting reliability, providing customers with trustworthy products.
Reliable Test Results
Accurate Data Analysis
Excellent Performance Verification
Ensure reliable performance of each chip in extreme environments
The bathtub curve is a graph that represents the relationship between product failure rate and relative time or cycle, showing three different stages of product life: Early Life stage, inherent or service life stage, and loss period stage.
The early life failure and inherent failure are mostly caused by defects introduced in manufacturing processes. Many device defects can be eliminated through effective reliability methods.
Early failure stage：During this stage, the product will rapidly decrease from a high failure rate state within the initial usage cycle. The reasons for the failure in this stage are mostly due to defects in design, raw materials, and manufacturing processes.Random failure stage：Being in a low failure or relatively stable interval failure state, MTBF (Mean Time Between Failure) can be used to characterize this state.Wear-out failure stage：During this stage, the product failure rate will increase. Usually caused by factors such as aging and degradation of device capabilities.Early failure rate refers to device failures caused by defects during the assembly of circuit boards, system assembly processes, or the initial usage cycle of clients.
ELFR (in FIT) = 109 × λ = 109 × χ2 c,d /(2 × A × N × tA)
A : Early failure rate acceleration factor, usually derived from temperature and voltage factors
N : Sample size for aging experiment
tA: Acceleration time within the specified time for aging experiment sample size
χ2: chi-square distribution
c : Confidence level
d: free radical
FIT: Failure in time device failure rate, which can be expressed as the number of device failures that occurred in 109 hours. For example, 1 fit can understand that 1 million devices will experience one failure after 1000 hours of operation, or 1000 devices will experience one failure after 1 million hours of operation.
Simulate calculations using the early failure rate equation. The calculation is based on effective reliability experimental data
As a socially responsible enterprise, Southchip is fully committed to protecting the environment and providing environmentally friendly and safe green products. We pledge to abide by laws and regulations, international regulations as well as other signed rules, applicable industry standards and international conventions. Moreover, we will promptly provide our customers with information on the chemical composition of product materials, RoHS, REACH SVHC and so on in an effective manner. Currently, our products comply with relevant regulatory requirements such as RoHS, halogen-free, REACH and lead-free. For more information, please contact us.
Southchip strictly controls the use of product substances and materials. The following page contains Southchip's compliance statements regarding environmental protection regulations such as RoHS, REACH SVHC and Conflict Minerals（CM）. You can check and learn about them.
We use labels and numbers on compliant IC products of Southchip. For more information about specific products of Southchip, please contact us and we will provide it for you.
