Project Overview
We recently completed a temperature sensor PCB assembly project for a customer from Argentina. The customer designed the PCB layout and relied on our one-stop PCB manufacturing and assembly service for mass production. Thanks to our competitive pricing and reliable quality, the customer quickly placed a bulk order of 2,500 pieces last year. This year, they have returned with an order for 3,000 more units.
PCB Specifications
The board is a TG130 two-layer PCB with the following technical specifications:
- Board thickness: 1.6mm
- Surface finishing: Lead-free HASL
- Copper thickness: 1oz
- Material: FR4
- Board size: 60mm × 40mm
- Solder mask: Green
- Silkscreen: White
The PCB design is simple with no difficult trace spacing or pad width issues. For production, we panelized the boards in sets of 3 using V-cut technology. After assembly, the boards were separated, edges polished, and carefully packaged before shipment.
BOM and Component Management
This project involved 15 types of components listed in the BOM. Since the BOM contained multiple corrections and notes, our team carefully verified each component’s package, value, part number, and accuracy requirements. For example, resistors required 1% tolerance instead of 5%.
After confirmation with the customer, we optimized some components to reduce costs, including connectors, diodes, capacitors, and resistors. By replacing certain connectors with alternative parts, the project achieved significant cost savings without compromising performance.
The PCB uses a single-sided assembly process with both SMD and DIP components. A critical design improvement was made for connector CN1, which was located at the edge of the board. Initially, its pads were too small compared to the pin size, leading to poor soldering quality. We recommended increasing the pad size by 1–2mm, which resulted in 100% reliable solder joints.
PCB Testing Process
Testing is one of the most important steps in PCB assembly services, ensuring functionality and reliability before shipment. The Argentina customer provided a detailed test procedure, which required a setup with four LEDs, one switch, and a 12V power supply. The testing sequence included:
- Power-On Test: Switch on the power; LED1 should light up immediately, followed by LED2 after 0.5 seconds.
- Temperature Response Test: Touch the sensor with a finger; once the temperature exceeds 30°C, LED3 and LED4 should light up.
- Cooling Response Test: Remove the finger; once the temperature drops below 26°C, LED3 and LED4 should turn off.
Initially, the results were inconsistent due to environmental temperature variations. After adjusting the test environment to ensure accurate thermal changes, all boards passed testing successfully. We thoroughly inspected all 2,500 PCBs before shipping them to the customer.
Application of Temperature Sensors
A temperature transducer is a sensor that detects temperature and converts it into a usable output signal. In this project, the touch sensor operates by thermal conduction or convection to achieve equilibrium, allowing the instrument to display accurate temperature readings.
Temperature sensors are widely used across various fields, including:
- Industrial automation
- Agriculture
- Consumer electronics
- Food and medical industries
- Aerospace and defense applications
- Petrochemical and metallurgy sectors
With the growing demand for smart electronics and IoT devices, temperature sensors play an increasingly critical role in modern PCB-based products.
Why Choose Our PCB Assembly Services?
This Argentina temperature sensor project highlights our ability to handle:
- High-quality PCB fabrication and assembly
- Cost optimization with alternative components
- Professional engineering support for design improvements
- Rigorous testing procedures to guarantee functionality
Our team is committed to delivering reliable PCB manufacturing solutions that meet the unique requirements of every customer.
Contact Us
If you are looking for a trusted partner for your PCB fabrication and assembly projects, we are here to help. Whether you need prototype PCB assembly, low-volume production, or mass manufacturing, our engineering team can support you from design to delivery.
Get in touch with us today and send us your inquiry!
