PCB Stencil , SMT Stencil, SMD Stencil , Laser Stencil , What is it?
The openings are etched into the metal using acid. Usually this kind of stencil offers better protection on material temper and hardness.
When prototyping dictates fast action with minimal cost, our prototype stencils are the best solution. Prototype Stencils gives you a quality stencil and framework so you can handle assembly from the convenience of your own desk.
Includes Prototype Stencil, one board holder, leaded or lead-free solder paste (must specify), temperature marker, squeegee, ESK-safe gloves and alcohol wipe.
Handy and convenient for low quantity prototype assembly using the Prototype Stencils. Re-usable, includes vacuum bulb and vacuum clips with diameters of 3/8", 1/4", and 1/8".
Framed stencils are laser-cut stencils designed for high volume screen-printing. With a framed stencil, your stencil is securely mounted to either a cast or extruded aluminum stencil frame a stencil frame using a mesh border, allowing for complete control.
Framed PCB Stencil Area
Maximum Squeegee Area
300mm*400mm (11.81inch*15.75inch)
120mm*220mm (4.72inch*8.66inch)
370mm*470mm (14.57inch*18.5inch)
200mm*300mm (7.87inch*11.81inch)
400mm*600mm (15.75inch*23.62inch)
220mm*400mm (8.66inch*15.75inch)
400mm*700mm (15.75inch*27.56inch)
220mm*500mm (8.66inch*19.69inch)
400mm*800mm (15.75inch*31.5inch)
220mm*600mm (8.66inch*23.62inch)
400mm*900mm (15.75inch*35.43inch)
220mm*700mm (8.66inch*27.56inch)
400mm*1000mm (15.75inch*39.37inch)
220mm*800mm (8.66inch*31.5inch)
400mm*1200mm (15.75inch*47.24inch)
220mm*1000mm (8.66inch*39.37inch)
400mm*1400mm (15.75inch*55.12inch)
220mm*1200mm (8.66inch*47.24inch)
420mm*520mm (16.54inch*20.47inch)
240mm*340mm (9.45inch*13.39inch)
450mm*550mm (17.72inch*21.65inch)
270mm*370mm (10.63inch*14.57inch)
500mm*800mm (19.69inch*31.5inch)
320mm*600mm (12.6inch*23.62inch)
500mm*1200mm (19.69inch*47.24inch)
320mm*1000mm (12.6inch*39.37inch)
550mm*650mm (21.65inch*25.59inch)
340mm*440mm (13.39inch*17.32inch)
584mm*584mm (23inch*23inch)
380mm*380mm (15inch*15inch)
736mm*736mm (29inch*29inch)
480mm*480mm (19inch*19inch)
Foil or Plate Only stencils are designed to work within interchangeable plate or "universal" systems. Also referred to as "reusable", these stencils do not need to be permanently glued into a frame.
For times when you need precise control for smaller production runs, our Foil or Plate Only stencils are ideal. These frameless stencils allow you to hand print with precision just the amount you need and can be stored conveniently.
Electroformed SMT stencils are nickel-based, electroform foils permanently mounted in a stencil frame using a mesh border to tightly stretch the stencil foil taut in the frame. Electroformed stencils offer the best paste release characteristics available and are frequently used for fine pitch (20 mil to 12 mil pitch) SMT applications on printed circuit boards. They are also used for µBGA's, Flip Chip, and Wafer Bumping (12 mil to 6 mil pitch).
PCB designers have to focus on internal size of stencil, they don't need to care about its overall size since it is generally determined by the parameters of printer in your contract assembler workshop.
PCB Stencil PCB Stencil,SMT Stencil,SMD Stencil,Laser Stencil JingHongYi PCB (HK) Co., Limited , https://www.pcbjhy.com
TCL TV F3900A installs a sofa housekeeper through the universal application of TV application . This tutorial is applicable to similar models such as TCL TV F3900A.
Installation procedure introduction
1 Download Universal application for TV application (XP system needs to be installed with NET3.5)→2 Open TV record IP address information→3 Connect TV and PC with the same router→4 Input TV IP→5 Complete installation
Operation method details
1, download the installer
Download link: 
TV application universal installer v1.1.1.zip
Note: Windows XP system must first install net.3.5,
NET.3.5 Download Address: Download Now
When running the installer, if you have anti-virus software on your computer that is risky, please quit or allow the installation first, because you know.
When the win8 system installation tool runs, it needs to click "Allow running": 
2, TCL TV, enter the settings interface, find the network settings; 
3, using a wireless connection (WIFI) as an example, view the IP address: In the network settings, find the connection on the SSID signal name, press OK; 
4. Record the displayed IP address. 
5. Decompress the "TV Application Universal Installer v1.1.1" file package on the computer and double-click to execute it; 
6, run "TV application universal installer v1.1.1", enter the recorded TV IP in the address box, according to start the installation; 
7, "TV Universal App Installer v1.1.1" will automatically connect and install the sofa butler to your TV, please wait a few minutes, as shown below, for the installation is successful; 
If the installation fails, restart the TV and try again by following the steps.
If you have any questions, please contact us directly. Sofa butler official TCL smart TV exchange QQ group 109779295.
After the sofa butler is installed, you can quickly install all kinds of video, music, games, early education and other applications directly on the TV. The sofa butler → recommendation → TV must have many common applications, such as HDP on-demand, on-demand pudding video.
If this tutorial helps to solve the problem, press Ctrl+D to bookmark this page for your next review. More related tutorials, all at http://
If this tutorial cannot be installed, please click http:// to see more tutorials for installing third-party software on TCL TV F3900A .
PCB SMT Stencil ,the unique goal is to move solder paste to the bare Printed Circuit Board.
Apart from all types of Printed Circuit Boards (PCBs) such as Prototype PCB , Aluminum PCB , HDI PCB , Flexible PCB , Rigid Flex PCB , Thick Copper PCB, High TG PCB , JHYPCB also manufactures solder paste stencils to meet Surface Mount Technology (SMT) requirements.
PCB Stencils, also called SMT stencils, SMD stencil, play a key role in transferring accurate amount of solder paste to correct positions on bare circuit boards ready for assembly. In other words, stencils can fast and efficiently ensure the most accurate solder paste amount and optimal electrical connection. With solder stencils, it is possible to use metal squeegee blades to apply solder paste easily over the openings on PCBs and make stencil to be well aligned with the surface of the advanced circuit board.
All of our SMT Stencils are 100% laser-cut type 304 full-hard stainless steel, ensuring the finest quality finish on the market today. We use a .001" laser beam with 98% overlap creating an extremely smooth hole that provides the best paste release. Most stencil fabricators use a .003" laser leaving mouse bites on the aperture edge. You can choose a PCB Prototype stencil, a frameless foil stencil, or a rigid permanently mounted stencil. Both the frameless and framed stencils come in various sizes to accommodate your printer and stencil requirements.
PCB Stencil Types Available:
1. Laser-cut stencils
The openings are lasered on 100% stainless steel. Generally speaking, this kind of stencil can be produced with high quality and a high degree of precision within a short time.
2. Chemical-etch stencil
3. Prototype PCB Stencil (Low-volume manual printing. Ideal for prototypes)
Prototype SMT Stencil Features:
Prototype
SMT Stencil Specs:
Technology
100% laser cut
Material Used
Stainless Steel
Stencil
Thickness
0.06 ~ 0.3 mm
Minimum Cut
Width
0.05 mm
Maximum Size
736 X736 mm
Aperture
Tolerance
within 0.007mm
Allow for
Fiducial Data
Yes
Delivery
1 ~2 Day
4. NEW Prototype PCB Stencil Kit (with leaded or lead/free solderpaste)
5. NEW Pick and Place Tool
6. Framed SMT Stencils (Also called "Glue-in" or Mounted Stencils)
Framed SMT Stencil Features:
Framed
SMT Stencil Specs:
Technology
100% laser cut
Material Used
Stainless Steel
Frame Types
Cast, Space Saver
Stencil
Thickness
0.06 ~ 0.3 mm
Minimum Cut
Width
0.05 mm
Maximum Size
736 X736 mm
Aperture
Tolerance
within 0.007mm
Allow for
Fiducial Data
Yes
Allow for
Panelized Data
Yes
Delivery
1 ~2 Day
Framed PCB Stencil Specification
7. Frameless SMT Stencil - Foil/Plate Only (for universal frames)
Frameless SMT Stencils also referred to as foils are laser cut solder paste stencils designed to work with stencil tensioning systems known as reusable stencil frames. This type of stencil does not need to be permanently glued in a frame. Frameless stencils are significantly less expensive than framed stencils and provide money-saving storage while still delivering superior quality and performance.
Frameless SMT Stencil Features:
Frameless
SMT Stencil Specs:
Technology
100% laser cut
Material Used
Stainless Steel
Stencil
Thickness
0.06 ~ 0.3 mm
Minimum Cut
Width
0.05 mm
Maximum Size
280 X 380 mm
Allow for
Fiducial Data
Yes
Allow for
Panelized Data
Yes
Delivery
1 ~2 Day
8. Frameless SMT Stencil - Foil/Plate Only (for hand printing)
9. Electroformed SMT Stencils
Electroformed SMT Stencil Features:
Electroformed
SMT Stencil Specs:
Technology
Electroforming
Material Used
Nickel
Suitable
Applications
All Component Pitches
Aperture
Tolerance
within 0.007mm
Stencil Thickness
0.06 ~ 0.3 mm
0.06mm.0.08mm.0.1mm.0.12mm.0.13mm.0.15mm.0.18mm.0.2mm.0.3mm
Positional
Accuracy
± 0.008mm
Delivery
1 ~2 Day
What's the difference between a framed stencil and a frameless stencil?
A framed PCB stencil will have a 0.5" to 1.5" thick metal frame around it, similar to a picture frame. Framed stencils are often used by contract manufacturers, assembly and board houses, and large scale production facilities and are commonly placed in a manual or automated stencil printing machine. Frameless stencils are a thin sheet of material cut with a small border around your design. For example pictures on these products, please visit our Gallery.
What's the difference between Polyimide and Stainless Steel?
All stencils are made with high quality Polyimide and Stainless Steel. We use only the industry leading Stainless Steel, designed specifically for stencils. These materials are ideal for prototype or Multilayer PCB .
Stainless Steel: 0.0007" Laser spot size, 0.001" minimum aperature size.
Polyimide Film: 0.003" Laser spot size, 0.005" minimum aperature size.
Polyimide has a lower precision rate due to the way it is processed and its ability to withstand heat during the cutting process. Minor variances will occur when the material reacts to the laser. Paste release is great, but this material should be limited to a small number of uses and with components 0402 or bigger.
The minimum aperature size for Polyimide is 0.005" vs 0.001" for Stainless Steel. Polyimide also has a natural curl in the material caused by the way the film is manufacturered, this is outside of our control. Stainless Steel provides the ultimate in precision and quality, with a 0.0007" spot size, and exceptional paste release with a truly flat surface. If you want the absolute best reflow experience, there is no comparison, Stainless Steel is the superior material.
Analysis and Treatment of Common Problems in PCB SMT stencil
Insufficient solder paste may cause poor bonds and contact between components and the board. The common causes of insufficient solder paste are poor gasketing, clogged stencil apertures, insufficient solder paste bead size, paste/stencil being used beyond recommended life span, stencil not wiped clean, or low squeegee pressure.
The main causes of smudging/bridging are excessive squeegee pressure, inadequate stencil wiping, poor contact between the board and stencil, high temperature or humidity, or low solder paste viscosity.
A typical misalignment print is usually caused by the vision system not spotting fiducials, PWB or stencil stretch, poor contact between the board and the stencil, or weak board support.
A PCB Board not fixed properly during solder paste printing gives poor results and increases soldering related issues. Normally, solder paste printing equipment can handle warpage of 1.0 to 3.0 mm but beyond this limit needs some special jigs or fixtures to hold the PCB. It may be difficult to tackle thick and small boards compared to thin and bigger size boards.
How to Determine Stencil Size?
Stencil size is composed by two parts: internal size and overall size. Internal size is the size compatible with that of PCB ready to be assembled while overall size refers to the size compatible with printer parameter limit. As long as both sizes are accurately designed, stencil will be able to make full use of its functions.
Internal size of stencil can be figured out conforming to the following rule:
For example, if one circuit board size is 50*50mm, then the size of its framed stencil should be around 150*150mm and the size of its frameless stencil should be around 250*250 mm.
It's easy to remember and operate so it worked for manual solder paste printing in SMT assembly prior to the advent of automatic printer. It can be said that different PCB sizes lead to generations of different internal sizes of stencil.
When it comes to automatic solder paste printer, however, it's relatively solid. Overall size of stencil has to be determined by parameter limit of the equipment, that is, printer, because stencil has to work within the range of printer with a frame. Different printers feature different parameter regulations. As far as PCBCart is concerned, the stencil size compatible with our printer can be either 650mm*650mm or 736mm*736mm.
How to Use PCB SMT Stencils?
TCL TV F3900A through the TV application universal installer to install third-party software, watching live video, video game tutorial TV application market, a key to download and install on-demand software such as APk?