Real Case Scenario
Circuit boards are an important component of automotive electronics. The reason of circuit board design and the maturity of production processes directly affect the reliability of automotive electronics.
Defects in circuit boards not only cause huge losses for car manufacturers, but also endanger people’s safety. Today Wonderful PCB takes stock of these events for you.
Chery: Recall of some Chery Tiggo 8 PLUS produced from October 18, 2021 to December 12, 2021, totaling 8,007 units.
Reason for the recall: The vehicle may cause the taillights to flicker or the taillights to be off due to the manufacturing problem of the taillight circuit board. Chery Automobile Co., Ltd. will replace the left and right rear taillights for the recalled vehicles free of charge to eliminate potential safety hazards.
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Ford Motor (China) Co., Ltd.: recalls some imported Lincoln Navigator vehicles of model year 2021 produced between November 18, 2020 and August 31, 2021, totaling 2,833 vehicles.
Reasons for the recall: Some vehicles have insufficient coverage of the printed circuit board via holes in the battery junction box. Under the action of pollutants and water, the circuit board may be corroded, resulting in short circuit and overheating, and there is a risk of fire.
Mercedes-Benz: Starting from April 29, 2022, some imported GLE SUV vehicles manufactured between May 14, 2019 and February 18, 2020 are recalled, totaling 3,329 units.
Reason for recall: Some vehicle control unit circuit boards may not meet the specifications, posing a safety hazard. Mercedes-Benz will replace the left rear backup light control unit free of charge for the recalled vehicles to eliminate safety hazards.
Hyundai Motor: 8 models produced from 2020 to 2022 are recalled in overseas markets. Hyundai Motors include Santa Fe, Sonata, Veloster Phase N, Santa Cruz, Elantra N and KONA N, and Kia Motors includes Sorento, etc.
Reason for the recall: The electric oil pump in the 8-speed dual-clutch gearbox may have quality problems, and the components on its circuit board may not be welded firmly, which may lead to disengagement during driving. The fault will cause the on-board computer to report an error, display an immediate and safe stop prompt on the dashboard, and put the vehicle into fail-safe mode, potentially leading to an accident.
It is not difficult to see from the the above car recalls that small defects on the circuit boards of automotive electronic equipment may bring significant safety risks.
If you want to improve the quality of automotive circuit boards, it is necessary to carry out strict testing of PCB and PCBA.
(circuit board of Wonderful PCB)
Importance of Safety
After the PCBA process of the entire automotive electronic product circuit board is completed, the ICT online test is first performed. When the circuit board is not powered on, an electrical test to diagnose process defects is performed on the PCBA circuit board.
To determine whether the circuit board has an open circuit, a short circuit, a virtual soldering, a missing component, or a component failure, etc., the fault location must be accurate to the device pin level.
Repair the circuit board according to the report, adjust the working parameters of SMT-related equipment, and improve the yield of PCB.
When it is confirmed that the circuit board of the automotive electronic product has no process defects, the product is packaged and becomes the finished product that is finally installed in the corresponding part of the car. At this point, it begins to enter the next test station of the product, the FCT (functional test) site. The finished product is functionally tested.
In the future, the penetration rate of electric vehicles and intelligent connected vehicles will continue to increase, and the degree of automotive electronics will continue to increase. This means that more new types of circuit boards will be used in automobiles, and safety and reliability will become more critical and complex.
Product quality and safety is the lifeblood of an enterprise, and this phrase is perfectly applicable to automotive circuit boards. As an international leader in automated test equipment, SPEA will work with major automotive electronics manufacturers to Continuous improve the yield rate of circuit boards and escort the safety of automobiles.
(circuit board of Wonderful PCB)
About Wonderful
Shenzhen Wonderful Technology Co., Ltd. is China’s top model and small batch circuit board manufacturer.
The company targets precision circuit board samples and small batches as the main target market. Since its establishment, it has adhered to the development concept of good quality and important reputation.
Invest huge sums of money to introduce advanced equipment, strictly regulate the operating standards and QC standards for incoming and outgoing materials, to ensure that the shipped products reach Seiko quality.
The self-developed ERP management system can realize the whole process of paperless operations such as online ordering, online payment, online production progress query, online logistics tracking, and online statistical report production, which greatly improves work efficiency.
It ensures that each order can be shipped quickly. After more than ten years of development, the company’s products and services have been well received by the market.
As well as the opening of an electronic component mall, integrated circuits, semiconductors, resistors, capacitors and other products are sold.
The company’s scale is developing rapidly, and the sample and small batch shipment capacity reaches 500 models/day.
The products are widely used in communications, medical equipment, industrial control products, aviation, military products, testing instruments,Automotive, computers and other peripheral products.
We will continue to pay attention to customers, with efficient delivery speed and perfect after-sales service, to become the most trusted brand supplier in the PCB industry.
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