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What is the PCB solder mask opening

Submitted by attentools on Thu, 02/10/2022 - 00:19

The circuit is covered with a solder mask on the PCB to prevent short circuits and damage to the device. The so-called solder mask opening is to remove the paint layer on the circuit so that the circuit can be exposed to tin.

The golden finger here is to open, and there is a very common function to insert and open the opening, that is, to increase the thickness of the copper foil in the later stage, which is convenient for overcurrent, which is in the power supply board and the motor control board.

Openings and bright copper in PCB design

Are there any standard rules for a PCB design

Submitted by attentools on Thu, 02/10/2022 - 00:18

In PCB design, many standard rules need to be followed to ensure the quality of the PCB.

1. 3W rule
In order to reduce crosstalk between lines, it should be ensured that the line spacing is large enough, when the line center spacing is not less than 3 times the line width, 70% of the electric fields can be kept from interfering with each other, called the 3W rule, when using a spacing of 10W, 98% of the electric fields can be reached without interfering with each other.

Accelerate your Business with Best Automotive PCB Assembly Manufacturer in China

Submitted by attentools on Fri, 10/22/2021 - 23:49

Accelerate your Business with Best Automotive PCB Assembly Manufacturer in China

Thanks to long-term partnerships with PCB manufacturers, suppliers of electronic components and OEM manufacturers from China, Expert solves the whole range of tasks for contract electronics manufacturing, from manufacturing printed circuit boards and purchasing electronic components to housing and final assembly of the product.

Get Contemporary Medical PCB Assembly Solutions

Submitted by attentools on Fri, 10/22/2021 - 23:47

Kingford provides one-stop PCB manufacturing and assembly medical equipment solutions for leading medical equipment companies. We serve medical companies of all sizes. Smaller or more professional medical companies are our main target customers. If you are looking for a one-stop medical PCB assembly http://www.hobbystar.net and manufacturing solution, Kingford is your best choice.

Bluetooth 5.1 Low Energy Module development board

Submitted by attentools on Sun, 12/06/2020 - 23:41

Basic Parameter
FSC-DB690 is a BLE Module Testing Board USB Port. It's a development board designed for FSC-BT690 | Ultra Small Size BLE 5.1 Module Ultra Low Power

Comparing with the bluetooth module itself, FSC-DB690 is much more convenient & easy for users to do testing. With the USB Port, the module can be connected to the computer directly, time saving, and ensuring the stability. Working with Feasycom's FREE UART tool, users can have the full control of the FSC-BT690 by using AT Commands.

Below you would find more features of the module FSC-BT690.

Dialog DA14531 Ble 5.1 Beacon Eddystone Asset Tracking IBeacon Tag

Submitted by attentools on Sun, 12/06/2020 - 23:38

Basic Parameter

Bluetooth Beacon
FSC-BP103B
Bluetooth version
BLE 5.1
Chipset
Dialog DA14531
Size
37.8mm x 33.8mm x 7.9 mm
Max number of broadcast
10 slots
TX power(Maximum)
+2.5dBm
Broadcast range
Up to 160m
Battery
CR2032
Battery Life
2.5 year by default setting(Broadcast interval: 1300ms, TX power:0dBm)
Colors
White, green, black, rose carmine
Operating temperature
-20°C to +60°C
Protection

AT8586 Economic 2 in 1 Rework Station for CELLPHOEN REPAIR

Submitted by attentools on Tue, 03/17/2020 - 18:52

Integration design for smd soldering station and hot air rework station to keep whole unit compact, durable and attractive.
LED screen used to display working temperatures and working states which is set by buttons make operations easy.
Low-voltage supplied iron heater to protect sensitive electronic component effectively.
Intelligence cooling system and deferred power-off function to extend hot air gun and heater inside lifespan.
Auto-sleep function to save energy.
Intelligent malfunction detection and indications.

AT938D 60W Digital & Lead-free Soldering Station

Submitted by attentools on Tue, 03/17/2020 - 18:47

Temperature read out in ℃ and ℉
On/Off switch on the right side of the unit.
MCU controlled temperature calibration.
Simulate bar indicating heating up status.
LCD display screen making control visualization.
User-friendly menu enables system setting easier.
Separate iron stand to save room and to make easier deposit.
Buttons (1, 2, 3) for pre-setting or switching frequently used temperature.
Low-voltage heater separated from power supply to keep soldering work safer.

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