SMArt door lock refers to an improvement on the basis of traditional mechanICal locks, which is more intelligent and convenient in terms of user safety, identification and management. Smart door locks are the executive components of door locks in access control systems. There are four types of PCBs for smart door locks, internal items, external items, switch items and antenna housings, all of which are made of FR-4 material, lead-free spray tin surface treatment, green solder mask, and white silk screen. The internal PCB board is 4 layers with blind holes, and the board size is 150mm*180mm. Other circuit boards are calLED external ones, which are SIMilar in size and shape, but without blind holes.

For internal printed circuit boards, in addition to assembling components, it is necessary to solder springs, coils, flats. This requires horizontal welding and angle protection. After the four types of PCBs are all assembled components, they need to be connected with wires. There are three types of wire: two-needle, three-needle and ten-needle. The ends of the wires are checked into the plastic housing. Each wire has a different color, which is convenient for customers to distinguish the two ends of the same wire according to the color. Then to secure these wires, we put heat shrink tubing through the wires. 

Leave the same distance between the two ends of each wire, and the tightness of the heat shrinkable tube is required. If it is too tight, it will easily damage the wire, and if it is too loose, it will not have a fixed effect. Finally, connect the four types of PCB boards with finished wires.

Smart door lock PCB assembly technology:

Using battery wave induction technology, the induction is more sensitive.

Main chip of circuit board: Texas Instruments TI chip;

Power supply: 4 AA alkaline batteries;

Static power consumption: <30 microns;

Dynamic power consumption: about 200mA;

Low voltage prompt: 5V;

Induction distance: 3-5cm;

Applicable temperature: -20℃～50℃;

Relative humidity: <95%RH;

Anti-static: >15000v, it can still ensure that information is not lost under strong electrostatic interference, and the work is stable

Smart door lock PCB assembly performance parameters:

Copper Thickness: 1 oz

Substrate: FR4

Maximum board size: : 635 X1000 mm

Copper Thickness: 1 oz

Layers: 1-50 layers

Solder mask color: green, yellow, red, black, blue, white

Surface treatment: HASL / ENIG