Your Best Security PCB Partner
Venture is your best manufacturer of automotive and industrial products in China. We have experienced security PCB and leading design engineers. Venture is a top market supplier of security PCB in the electronics industry. Venture introduces designs, operations, and sales for our security PCB supplies. Our security PCB services include:
- Flexible Security Door Lock PCB
- Multifunctional Security PCB
- Security NVR Motherboard PCB
- Intelligent Security PCB
- System Alarm Power Security PCB
- Internet Automobile Security PCB
Your Leading Supplier Security PCB in China
Nowadays, home security device has an enormous demand. Venture presents an indigenous security PCB ready system. We offer a wide range of security PCBs used in electronic security products.
Our security PCB products are widely used in wireless alarm systems, CCTV monitors, and other electronic security products. Venture is your market for household safety equipment today.
Venture manufactures security PCB such as Flexible Circuit, Metal Core PCB, and High Multilayer Circuit Board. Venture security PCBs are designed for additional protection with good performance.
Our security PCB is high-end and durable for long time use. Venture security PCB is affordable for everyone and readily available.
If you are looking for available security PCB, Venture is the right place to be!. Venture is a stocking supplier and provider of security PCB.
Our security PCBs includes some safety devices that can use for like security cameras, smoke detectors, and electronic door locks. Venture security PCB is the ideal type of printed circuit board depends on its application.
Venture is a professional manufacturer of security system printed circuit board. Our security PCB has wide applications like alarm systems, intrusion control, control system, video surveillance, and other fields.
With the increasing number of crimes, you can have security PCB from Venture that will necessarily protect you. We always introduce a comprehensive and sophisticated security PCB.
Venture is an experienced manufacturer of Security PCB. This product is featured with motion sensors, carbon monoxide detectors, burglar alarms, and other the same functions.
With our immediate response from our 24/7 sales and tech support team, we will be your best Security PCB partner in China. At Venture, we can answer any Security PCB questions that you may have.
If you want more information about Venture, you can Email us!
Security PCB: The Ultimate FAQ Guide
I know you’re looking for the best security PCB in the market.
That’s why this guide will answer all questions you have been asking about security PCB.
So, keep reading to learn more.
- What Is A Security PCB?
- Where Do You Employ Security PCBs?
- What Mounting Technology Do You Use On Security PCBs?
- What Design Aspects Can You Employ For Your Security PCB?
- What Are The Design Requirements When Routing Security PCBs?
- What Components Can Fail Due To Thermal Dissipation On A Security PCB?
- Can You Employ An SMD Heat Sink On A Security PCB?
- What Board Forms Can Security PCBs Take?
- What Materials Do You Use On Security PCBs?
- What Are The Key Parameters For Security PCB Substrates?
- What Copper Thickness Can You Employ On A Security PCB?
- How Do You Determine The Copper Thickness On Your Security PCB?
- Where Can You Employ Design Software In The Manufacture Of Security PCB?
- How Do You Fabricate The Copper Pattern In Security PCBs?
- Why Do You Need To Drill A Security PCB?
- How Do You Print The Security PCB Legend?
- What Board Tests Can You Carry Out On A Security PCB?
- What Issues Can You Highlight On A Security PCB During Functional Testing?
- Can You Employ Conformal Coating On Security PCBs?
- What Are Common Features You Find On A Security PCB?
What Is A Security PCB?
A security PCB is a circuit board that you employ in security systems intended for the home, office or government installations.
You can have security PCBs with different capabilities but they all need to be dependable for performance effectiveness.
You can employ security PCBs outside in which case they should endure the elements.
Such a security PCB has to employ rugged components with high quality features such thermal and moisture resistance.
Security PCB Circuit Board For Door Smart Locks
Where Do You Employ Security PCBs?
Some of the devices and equipment you find security PCBs include:
- Security cameras employed in closed circuit monitoring both indoors and outdoors.
- Smoke detectors such and other employing similar mechanism employ security PCBs.
- Electronic door locks used in smart homes and offices.
- Motion sensors such as laser beams and alarms employ security PCBs aiding in capturing movements.
Security Camera PCB
What Mounting Technology Do You Use On Security PCBs?
You find the following mounting techniques employed on a security PCB:
In this technique, you have components attached with leads which you position into drilled holes in the board.
You achieve a stronger connection when employing through-hole mounting compared to surface mounting.
Through Hole Technology Design In PCB
You directly attach your components onto the security circuit board by employing solder material.
Surface mounting is more common and requires the use of vias to establish connection across multiple layers.
Surface Mount Technology Design
What Design Aspects Can You Employ For Your Security PCB?
Safety is a major concern for people all over the world and hence the increased investments in security PCB. You can employ the following aspects in your design of a security PCB to enhance safety:
i. EMI Shielding
Radiated EMI can provide information to attackers about what’s going on in your system.
Hackers can use injected EMI to interfere with your security circuitry by inserting signals into your AC systems. Shielding ensures foreign and harmful signals cannot infiltrate your circuit.
ii. Using Tamper-Proof Circuits
You can detect tampering in a variety of ways such as using physical switches that actuate when you open a device.
You can also wrap your security PCB in a wrapper that detects when it’s broken into.
You can also employ different physical countermeasures upon detecting an incursion.
You can terminate the power to the device with your security PCB preventing infiltration, though without deleting the memory.
iii. Masking Your Components
Hackers can infiltrate your security system by employing your board’s input and output pins and test points in decryption.
You can mitigate this by concealing your IC chips by using epoxy or backing them out to make them unidentifiable.
Additionally, you can employ components that are hard to reach to making execution of an attack riskier.
Besides, you can also employ buried vias for connections and filling up non-conductive vias.
What Are The Design Requirements When Routing Security PCBs?
Routing in a security PCB is essential in ensuring you connect the components to meet a desired performance need.
Some of the design requirements when routing a security PCB are:
- Trace current carrying capacity: You find high current boards may necessitate larger traces.
- Trace width: Trace width affects crosstalk and assures manufacturability.
- Regulated impedance signals: Such signals necessitate a specified width that you determine depending on the PCB layer structure.
- Topology of routing: This determines how you connect the traces to multiple components.
- The maximum allowable trace length: The total losses you incur along a trace influences this design aspect.
- Avoid routing over splits in planes and keep track of the return path in your PCB by using uniform ground regions.
- Reduce the via networks you employ on your security PCB when the application involves high frequency signals.
- Make traces as brief and direct as possible, that is, not any longer than you require.
Wider Trace Ensures The Current Is Conducted Without Potential Issues
What Components Can Fail Due To Thermal Dissipation On A Security PCB?
Due to resistive losses, you observe the transformation of electrical energy to heat energy in a security PCB.
Consequently, there will be some resistive losses in all components, whether they be basic passives or complicated logic circuits.
Some of the components that can succumb to high thermal dissipation on a security PCB include:
- Components with electromechanical properties such as the motors and switches.
- Metal-oxide-semiconductor FETs that you employ in regulation of power.
- Bulky integrated circuit chips which provide your board’s majority power.
- Electronic resistors especially when you employ them in delivering power for your security PCB.
- Linear regulators whose design facilitates voltage regulation in the security PCB via heat dissipation.
Can You Employ An SMD Heat Sink On A Security PCB?
You can directly install an SMD heat sink on a component package to offer excellent heat dissipation away from the component.
You can also attach it to the backside of a PCB or employ it as a heat dissipation bridge in an enclosure.
A thermal compound or a thermal pad can help you mount an SMD heat sink manually.
High-power components may have a thermal tab or pad that you solder to a pad instead of an SMD heat sink.
You can assemble an SMD heat sink alongside these components such as in power delivery sections that use MOSFET arrays.
You can attach a single big SMD heat sink across numerous components to disperse more heat.
In high-power components, an SMD heat sink is an excellent technique to appropriately dissipate heat.
SMD heat sinks come in a variety forms, requiring you to have the correct footprint and mechanical model in place.
Extruding SMD Heat Sink On PCB
What Board Forms Can Security PCBs Take?
There different configurations of security PCBs depending on factors such as the area of application and design requirements.
When selecting a security PCB, you need to consider the space requirements, electromechanical properties and ability to handle stress.
You can find security PCBs in the following forms:
Many security PCBs are single-sided having only one conductive layer and thus suitable where you employ few components.
With these boards, you find the components positioned on one surface with the conductive track on the reverse side.
Single Sided Security Camera PCB Board
A double-sided security PCB encompasses two conductive layers sandwiching the substrate. You can connect the two conductive layers via drilled plated holes while populating both surfaces using SMT or THT.
A multi-layer security PCB has in excess of two layers each separated from the other by a substrate.
You bond the layer together by subjecting them to pressure in an oven which melts the bonding agent. A multi-layer security PCB is conducive for high density.
Rigid Security PCBs
You cannot bend or twist a rigid security board since it employs firm base material that is unyielding. You can configure a rigid security PCB as a single-sided, double-sided or multi-layer.
Flexible Security PCBs
A flexible security PCB employs bendable materials in its structure allowing you to fold, bend or twist it.
You can fashion a flexible security PCB in different configurations such as a single-sided board, or double-sided or multi-layer.
Rigid-Flex Security PCBs
A Rigid-Flex PCB contains both flexible and rigid elements allowing you to fold or flex the board.
You can fabricate a board having the flexible element between rigid boards allowing use of narrower conductor lines and thus space.
Rigid Flex Security PCB
What Materials Do You Use On Security PCBs?
A security PCB encompasses a dielectric substrate alongside a conductive layer which is usually copper.
You commonly find glass fibre employed for security PCB laminates alongside the following:
FR refers to fire retardant. FR 4 is the most common security PCB substrate material consisting epoxy and glass fibre components.
FR 4 offers your security PCB impressive mechanical strength, glass transition temperature and lead free usage.
CEM 1 material consists of paper, fiberglass, resin and phenol compounds which you find useful in making single-sided security PCBs.
While you can employ CEM 1 instead of FR-4, it costs much higher.
You find CEM 3 consists glass and epoxy material and is typically white in colour. You can substitute CEM 3 for FR-4 which has better mechanical strength but slightly costs more.
Polyimide is especially useful in the making of flexible security PCBs. This material offers you decent electrical properties and chemical resistance with a wide range of operating temperature.
What Are The Key Parameters For Security PCB Substrates?
The security PCB substrates consist a matrix-reinforcement combination usually epoxy resin and fiberglass.
You can also include resin or other material such as ceramic for your substrate.
Substrates are typically dielectric and you consider the following key parameters in their selection:
Temperature Of Glass Transition
Glass transition is the slow and reversible change of amorphous materials from a hard to a rubbery state as temperature rises.
The temperature of glass transitions specifies the temperature range over which the glass transition occurs.
Ultimate Tensile Strength
The ultimate tensile strength (UTS) of a material is the highest stress it can endure before breaking when stretched or pulled.
The ultimate tensile strength of brittle materials is near to the yield point, whereas the ultimate tensile strength of ductile materials might be higher.
You use a tensile test to determine ultimate tensile strength, after which you record the engineering stress versus strain.
The ultimate tensile strength, which has units of stress, is the highest point on the stress–strain curve.
Shear strength refers to the security PCB substrate material’s resistance to the failure that occurs under a shear load.
A shear load is a force that causes a material to slide along a plane parallel to the force’s application direction.
Thermal expansion is the tendency of a security PCB substrate to change its size and density as the temperature changes.
When you divide the expansion and temperature change, you determine the material’s linear thermal expansion coefficient.
Dielectric Constant And Loss
Dielectric constant is a material property that describes the relationship between a charge change in relation to a vacuum.
Contrarily, dielectric loss describes a substrate material’s behavior in releasing electromagnetic energy such as heat.
The breakdown voltage of a security PCB substrate is the voltage at which the substrate starts exhibiting electrical conductivity.
What Copper Thickness Can You Employ On A Security PCB?
The copper thickness of security PCBs is the thickness you achieve upon laying a defined copper weight over a square foot.
You typically measure the weight of copper in ounces and subsequently derive their thickness.
For instance, one ounce (1 oz) of copper has a thickness of 1.344 mils which is a thousandth of an inch.
Common copper thickness you can employ for the security substrate PCB are: half-oz, one-oz, two-oz and three-oz.
The thickness of copper you employ on your security PCB depends on the application and board design.
In security PCB applications that require high current transmission, you employ thick/heavy copper.
Alternatively, flexible security PCBs employ thin copper films allowing them to be bent or folded.
You find copper thickness designated such as 1/0 which indicates one-oz copper on one board side with non on reverse.
How Do You Determine The Copper Thickness On Your Security PCB?
Thick security PCBs are less likely to break compared to thin PCBs. However, some applications require only the use of thin boards.
You consider the following factors when selecting the thickness of a security PCB:
Where you have minimal board space in your application, using thin boards is more favorable. However, where your application has no space limitation, you can employ thick boards.
Thicker boards are much heavier and thus less susceptible to breakage. While thin board break easily, some applications only require the use of thin boards.
Board features you employ on your security PCB such as electronic components and connections also determine your board’s thickness.
For instance, you can well accommodate components with large heat dissipations on a thick board.
While thin boards break easily compared to thick boards, their flexibility beats that of thick boards. When making a flexible board, you need to use thin copper.
Impedance matching is an important aspect of security PCBs which requires consideration of the board thickness.
The board thickness determines the dielectric thickness which is an essential parameter in impedance matching.
Where Can You Employ Design Software In The Manufacture Of Security PCB?
You find design software useful in several steps of the security PCB fabrication such as:
- Computer Aided Manufacturing (CAM) software helps you in the input and verification of the fabrication data.
- Design software via and EDA (Electronic Design Automation) allows you to conduct schematic capture.
- You can determine the component positions and location of heat sinks using design software.
- Design software is central in the determination of your security PCB layer stack up.
- Mitigation for on board thermal control is possible by using design software in the geometry of preparing lands and vias.
- You use electronic design software to create board clearances, rounding and power connections.
How Do You Fabricate The Copper Pattern In Security PCBs?
The fabrication of the copper pattern determines the path of electric signal flow and thus function of the security PCB. Usually, the process begins with the printing of the desired copper pattern before shaping it on a copper film.
You identify the following processes used in the fabrication of a copper pattern on a security PCB:
- Silkscreen printing: Here, you employ an ink resistant to etching to develop the shielding mask.
- Photoengraving: You employ a photomask and developer in the removal of a UV-sensitive photoresist coating. Subsequently, you create a photoresist mask that protects the copper beneath it.
- Milling: You mill away the copper foil from the substrate using a two- or three-axis mechanical milling machine.
- Laser Etching: You can employ a computer numerically controlled laser machine to directly remove the copper.
A Laser Etched PCB
Why Do You Need To Drill A Security PCB?
Drilling a security PCB involves making holes through the board for a variety of functions. You find drilling necessary for the following reasons:
- Fabricating holes for use as vias for interlayer electrical signal transfer.
- For thermal management purposes through creation of paths for thermal transfer.
- Creating through-holes for component attachment.
- Creating board positions for use as reference designators.
How Do You Print The Security PCB Legend?
The security PCB legend refers to the printed information on the surface of the board that facilitates component placement. The PCB legend includes different information bits such as test points, component identifiers, reference designators and part numbers.
You can print the security PCB legend in one of the following ways:
Manual Screen Printing
Manual screen-printing employs epoxy ink in the printing process where you apply the ink on the surface before drying. It is a low-cost method that has been in use the longest.
Manual Screen printing Of The Silk Screen
Liquid Photo Imaging
In liquid photo imaging, you coat the laminate with epoxy before subjecting it to ultraviolet light. You follow the light application with a curing and developing process.
Liquid Photo Imaging
Direct Legend Printing
You use an inkjet projector with acrylic ink in direct legend printing where you use CAD software in the ink application. You thereafter expose the ink to ultraviolet light.
Direct Legend Printing
What Board Tests Can You Carry Out On A Security PCB?
You find the following methods useful in testing your security PCB:
In-Circuit Testing (ICT)
ICT is the most reliable method of PCB testing which employs a bed-of-nails to power up individual circuits.
You use fixed probes that you arrange in a fashion that matches the security PCB’s design.
The probes evaluate the solder connection’s integrity. You begin the test by employing the bed of nails tester in pressing the board against the bed of probes.
The ICT testing probes can connect to the circuit using predesigned access points on the board. They apply some pressure on the connection to ensure that it remains unbroken.
Burn-in testing is an intensive testing process that seeks to identify early problems and determine the board’s load capacity.
Burn-in testing can be damaging to the parts under test due to its intensity.
Burn-in testing involves subjecting your security PCB to a lot of power, typically its maximum capability.
You continually run power through the board for over fifty hours and the process can thus reduce the product’s lifespan.
An X-ray inspection for your security POCB, allows you to identify defects related to solder connections, internal traces and barrels.
You can employ an X-ray inspection using both 2D and 3D equipment with the latter giving you comprehensive results.
Testing your board with X-ray allows you access to obscured board components and elements such as packages employing ball grids.
What Issues Can You Highlight On A Security PCB During Functional Testing?
Functional testing is bent on identifying defects from the manufacturing process which hamper the security PCB’s performance reliability.
Common issues you can highlight during this process are:
- Issue with power integrity such as low-frequency electrical noise and unwarranted ripple in the power distribution network.
- Disproportionate signal distortion related to nets and buses.
- Incorrect voltage and/or current values deriving from improper component placement or absent component altogether and undue voltage drops.
Can You Employ Conformal Coating On Security PCBs?
Conformal coating is a protective layer you apply over the security PCB surface that adapts to the board’s characteristics.
Conformal coting protects the board form degradation and against exterior environmental elements such as moisture and dust.
Conformal coating consists of polymers, particularly resin, and acts as an insulator for the circuit board.
Common types of conformal coatings you can employ include: Acrylic resin, Silicone resin, Polyurethane, Epoxy resin and Parylene.
What Are Common Features You Find On A Security PCB?
Some of the common features you find on a security PCB are:
- Trace: The trace is a conductive path that allows you to electrically connect components via pads and through-holes.
- Vias: Where you have multiple conductive layers in your security PCB, vias allow you to transfer electrical signals between the layers.
- Mounting Holes: Mounting holes are similar to vias only that they are unplated and serve a mechanical function rather than electrical.
- Copper Pour: A copper pour consists a section of the security PCB occupied by copper. You find copper pours useful in thermal management and proving components low-inductance connection.
- Ground Plane: A ground plane consists an entire layer of copper that you use for grounding purposes. When making ground connections, you position vias adjacent to component pins.
Other Related Resources:
For inquiry or question on security PCB, contact Venture now.