UETPCB’s Quality Control – Your Trust, Our Standard

As a PCBA manufacturer, UETPCB provides high-quality products to a wide range of industries. Through strict factory management, we ensure the seamless operation of many production lines. From the design of the PCB to staff training, we maintain a strict check on every step of the process and have established a comprehensive quality management system. For example, this system has enabled us to achieve a 99.99% product qualification rate. With advanced technology and professional management, UETPCB stands out in the industry as a trusted partner.

ISO 9001:2015

We ensure that the entire process meets international quality standards and provide customers with reliable products and services.

IATF 16949

Through strict process control and defect prevention, we ensure zero-defect delivery of automotive-grade PCBs.

ISO 13485:2016

Establish a quality management system dedicated to medical devices to ensure that products are traceable from design to production..

CE

Prove that the product complies with EU health, safety and environmental regulations, helping your electronic devices enter the European market without obstacles.

RoHS

Strictly restrict hazardous substances such as lead and mercury, and provide environmentally compliant PCBs.

UL

Through international authoritative safety testing and certification, it provides access guarantees for terminal devices to enter the North American market.

Why Choose Us

PCB manufacturing standards:

IPC Class 2, Class 3

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PCB Material：

KB, TAIYO, Shengyi, Rogers, Arlon, Isola, Nelco,3M etc.

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Solder Paste:

Alpha

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Electronic Component Supply:

We cooperate with original manufacturers, agents, and certification platforms (such as DigiKey, Mouser, etc.) to establish a multi-channel supply chain system. Through strict supplier management, we ensure stable and smooth supply.

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Quality Assurance:

High-precision production equipment, mature management team, enterprising spirit of innovation, self-developed MES system and first-article test system.

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Quality Control Process

pcb-Quality-Control-DFM-Checking

DFM Checking

Our engineering team performs a feasibility review of your design files (e.g., board edge clearance, trace routing, drilling, pad spacing, impedance, stack-up) prior to production.

Raw-Material-Guarantee

Raw Material Guarantee

We source materials exclusively from industry-leading suppliers (e.g., KB, Shengyi, Rogers) and rigorously inspect them per international standards and customer specifications to ensure product durability and stability.

AOI

Uses high-resolution cameras to capture and analyze PCB images for defect detection.

pcb-Quality-Control-Flying-Probe-Testing

Flying Probe Test

Verifies circuit continuity (open/short) and measures electrical parameters (resistance, capacitance, voltage) by contacting test points with movable probes according to programmed instructions.

pcb-Quality-Control-Fixture-Based Test

Fixture-Based Test

Employs custom fixtures with precisely aligned test pins to rapidly verify circuit net connectivity.

FQC-Inspection

FQC Inspection

Conducts the final inspection, checking for functional defects and ensuring the PCB’s appearance meets all standards and specifications.

pcb-Quality-Control-Incoming-Quality-Control

Incoming Quality Control（IQC）

Inspects 100% of raw materials (quantity, footprint, value, appearance) before production to ensure process stability.

pcb-Quality-Control-Solder-Paste-Inspection

SPI (Solder Paste Inspection)

Verifies solder paste printing quality against specifications to prevent defects caused by inadequate printing.

pcb-Quality-Control-AOI

AOI

Performs per IPC-610D standard to detect surface mount defects (misplaced, missing, reversed components, faulty connections), preventing defect flow to next stage.

BGA-X-RAY

X-Ray Inspection

Essential for BGA inspection, detecting critical defects (cold solder, bridging, shorts, voids, misalignment) to ensure solder joint reliability.

pcb-Quality-Control-First-Article-Inspection

First Article Inspection

Verifies component parameters and assembly process correctness against production documents for the first assembled unit.

pcb-Quality-Control-FQC

FQC

Conducts final per IPC-610 inspection before shipment to prevent defective boards from delivery.

pcb-Quality-Control-PCBA-Flying-Probe-Test

Flying Probe Test

Tests component values and electrical characteristics to reduce PCBA defect rates.

pcb-Quality-Control-Functional-Circuit-Test

FCT (Functional Circuit Test)

Simulates the PCBA’s actual operating state to verify functional correctness by testing parameters like current, voltage, and input/output signals.

pcb-Quality-Control-Vibration-Test

Vibration Test

Uses a vibration platform to simulate transportation effects, identifying potential solder joint failures (like component detachment or pad cracking) to improve product yield.

pcb-Quality-Control-Drop-Impact-Test

Drop Impact Test

Evaluates PCBA impact resistance by simulating impact environments to test reliability and damage tolerance.

pcb-Quality-Control-Temperature- Humidity-Test

Temperature & Humidity Test

This test simulates temperature and humidity variations encountered in real-world environments. The PCBA is exposed to cycling temperature and humidity conditions to evaluate its performance, lifespan, and reliability, particularly for outdoor or harsh environments.

PCBA Fixture Test

PCBA test fixtures use metal probes to contact PCB pads or test points. When powered, these fixtures measure key circuit parameters (voltage, current) via instruments like voltmeters and ammeters, assessing functionality correctness.

After-Sales Support

UETPCB commits to resolving any manufacturing-related quality issues or non-conforming orders. Upon receiving your complaint, our team will address the problem within 1-2 working days. We provide free rework at our expense, cover return shipping costs, and offer refunds as per our policy.


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