The focus of the article is on the identification of original goods and new goods; but another situation is more serious, that is, many low-end brand counterfeit products, directly printed on the logo of high-end brands, when the original goods are sold.
Speaking of the true and false components, nothing more than need to distinguish, the components are original or scattered new. The new loose goods mentioned here are refurbished parts or disassembled parts, which are processed and reworked, so the industry generally refers to the new products. At the same price, everyone wants to buy new, new features, so this requires some common sense to identify which are original new products and which are what we call new pieces.
1. Look at the surface of the integrated circuit chip for traces of sanding.
Any surface of the polished chip will have fine lines or even slight marks on the previous print. Some cover the surface of the chip with a thin coating. It looks a bit shiny and has no texture.
2, look at the printing.
Most of the current chips are laser-marked or printed on a dedicated chip printer. The writing is clear, unobtrusive, unobtrusive and difficult to erase. Refurbished chips are either "saw-toothed" by the cleaning agent and are "saw-toothed", or they are embossed, shaded, misplaced, easily erased or overly conspicuous.
In addition, the screen printing process of the current IC manufacturers have long been eliminated, but many chip refurbishment due to cost reasons still use silk screen technology, which is also one of the judgment basis, the screen printing word will be slightly higher than the chip surface, you can feel the slight unevenness by hand touch Or have a feeling of worry. However, it should be noted that due to the recent decline in the price of small laser marking machines, more and more refurbished ICs use laser marking, and some new films will use this method to change the word mark or simply hit again to improve the chip. Grades, this requires extra attention, and the method of distinguishing is more difficult, you need to practice "eyes of fire." The main method is to look at the overall coordination, the writing and the background, the new and old degree of the pin does not match the new word, the possibility of clearing the problem is also large, but many small factories, especially some small IC companies in China. The chip was born like this, which adds a lot of trouble to the identification, but the judgment of the mainstream big chip is still very meaningful. In addition, more and more laser marking machines have been used to modify the chip markings, especially in the memory and some high-end chips. Once the location of the laser printing is found to be inconsistent with individual letters and uneven thickness, it can be determined. It is Remark.
3. Look at the pins.
All the tin-plated pins that are as bright as "new" must be refurbished. The majority of the pins of the IC should be so-called silver powder feet. The color is dark but the color is uniform, and there should be no trace of oxidation on the surface. In addition, the pins of DIP and other plug-ins should not have traces of rubbing, even if there are (repackaging will be) scratches should be neat, in the same direction and the metal exposed is smooth and non-oxidized.
4. Look at the date of manufacture of the device and the label of the package.
The label of the goods includes the labels on the bottom of the chip should be consistent and the production time should be consistent with the product, while the reprinted sheets without Remark are confusing and the production time is different. Although the Remark chip has the same frontal label, but sometimes the value is unreasonable (such as the label "Geely number") or the production date does not match the device product. If the label at the bottom of the device is very confusing, the device is Remark.
5. Measure device thickness and look at device edges.
Many original laser-printed refurbished refurbished films (mostly power devices) must be polished deeper due to the removal of the original mark, so the overall thickness of the device will be significantly smaller than the normal size, but not compared or measured with a caliper, the general inexperienced person still It's hard to tell, but there is a general knowledge of breaking the law, that is, looking at the front edge of the device. Since the plastic sealing device must be “released†after injection molding, the edge angle of the device is round (R angle), but the size is not large. It is easy to grind the rounded corner at right angle during the grinding process, so the front edge of the device is right angled. Can be judged as grinding goods. In addition, there is another method to see if the merchant has a large number of original packaging materials, including the inside and outside of the uniform carton, anti-static plastic bags, etc., the actual identification should be used in multiple ways, there is a problem can be identified The quality of the device.
If there is a chip that we can't judge with the naked eye and experience, we can use a writing tool such as a magnifying glass and a digital magnifying glass to polish the refurbished chip table. The tiny holes are difficult for us to see with the naked eye. We must rely on Equipment to observe!
Here are a few key points:
1), look at typing, generally refurbished re-spinning (white) with chemical thinner can erase the word is generally refurbished goods, the original goods can not be wiped off.
2) Look at the lead angle. The pins of the original goods are very neat and like a straight line, while the retreaded ones have some feet that are not neat and awkward.
3), look at the positioning hole, observe the positioning hole of the original goods are relatively consistent, some of the refurbished depths or simply polished, and some can see the traces of the original positioning holes. In the actual work, we must also observe and observe carefully. Some of the counterfeiting techniques are quite high, and we must be particularly cautious in purchasing!
0.8mm ( 0.031") Female Header Connector
Category:Board To Board Connectors
Sub-Category:Pin Header Female
Type:0.8mm
0.8mm ( 0.031") Female Headers Overview
Whenever there is a need for fitting small-sized connectors in compact devices, the 0.8mm pitch female header, or sometimes referred to as header connector, is ideally suited for this application. Not only does this female header space-savvy, but it is also designed for vacuum pick and place that makes it suitable for high volume automated manufacturing.
Antenk offers these low profile, easy-install, SMT or THM miniature female connector plugs at high quality and affordable China-quoted price, for board-to-board connection, snuggly fitting the pins of a male header and acting as a receptacle.
Assembly and service is simple with either vertical (straight), elevated or at a right angle configuration/orientation, which can dissipate current of about 1.0 A or less in a tape and reel packaging. The filleted corners can also remove shadowing allowing optimization of LED output.
Also, the 0.8mm pitch female headers are made to work in Arduino boards, Arduino Pro and Arduino Mega with either single or double-row female headers, facilitating connections for programming and incorporation into other circuits. They have the perfect height for clearing the USB-B connector and great for stacking multiple shields.
Female header always called as [Header connector", Antenk provide widely range of header connector, from 2.54mm (.100″ inch) pitch to 0.8mm (0.031 inch) pitch. The number of pins (contacts) is from 2 to 40 pins per orw. There are three type: Straight (Dip Vertical), Right angle, SMT (surface mount).
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Applications of 0.8mm Pitch Female Headers
Its small size is most suitable for PCB connections of small equipment and devices such as:
Arduino Boards
Architectural and sign lighting
Retail and display lighting
Fluorescent LED retrofit lighting
Cabinet or furniture lighting
Commercial / residential cove lighting
WiFi equipment
Gaming consoles,
Measurement instruments
Medical Diagnostic and Monitoring equipment
Communications: Telecoms and Datacoms
Industrial and Automotive Control and Test
Mount Type: Through-hole vs Surface Mount
At one side of this female header is a series of pins which can either be mounted and soldered directly onto the surface of the PCB (SMT) or placed into drilled holes on the PCB (THM).
Through-Hole (Poke-In)
Best used for high-reliability products that require stronger connections between layers.
Aerospace and military products are most likely to require this type of mounting as these products experience extreme accelerations, collisions, or high temperatures.
Useful in test and prototyping applications that sometimes require manual adjustments and replacements.
0.8mm vertical single row female header, 0.8mm vertical dual row female header, 0.8mm Elevated single row female header, 0.8mm Elevated dual row female Header, 0.8mm right-angle single row female header and 0.8mm right-angle dual row female header are some examples of Antenk products with through-hole mount type.
Surface-Mount
The most common electronic hardware requirements are SMT.
Essential in PCB design and manufacturing, having improved the quality and performance of PCBs overall.
Cost of processing and handling is reduced.
SMT components can be mounted on both side of the board.
Ability to fit a high number of small components on a PCB has allowed for much denser, higher performing, and smaller PCBs.
0.8mm Right-angle Dual Row female header, 0.8mm SMT Single row female header, 0.8mm SMT Dual row female header and 0.8mm Elevated Dual Row female Header are Antenk`s SMT female headers.
Soldering Temperature for 0.8mm Pitch Female Headers
Soldering SMT female connectors can be done at a maximum peak temperature of 260°C for maximum 60 seconds.
Orientation/Pin-Type: Vertical (Straight) and Right-Angle
0.8mm pitch female headers may be further classified into pin orientation as well, such as vertical or straight male header or right-angle female header.
Vertical or Straight Female Header Orientation
One side of the series of pins is connected to PCB board in which the pins can be at a right-angle to the PCB surface (usually called "straight" or [vertical") or.
Right-Angle Female Header Orientation
Parallel to the board's surface (referred to as "right-angle" pins).
Each of these pin-types have different applications that fit with their specific configuration.
PCB Connector Stacking
Profile Above PCB
This type of configuration is the most common way of connecting board-to-board by a connector. First, the stacking height is calculated from one board to another and measured from the printed circuit board face to its highest insulator point above the PCB.
Elevated Sockets/Female Headers
Elevated Sockets aka Stacked sockets/receptacles or Mezzanine are simply stacked female headers providing an exact distance requirement between PCBs that optimizes electrical reliability and performance between PCB boards.
Choosing this type of stacking configuration promotes the following benefits:
Connector Isolation - the contacts are shrouded preventing cable connection mishaps and good guidance for the mating header connectors.
For off-the-shelf wireless PCB module, stacking height is optimized with elevated sockets.
Offers superior strength and rigidity.
Polarisation prevents users from inverted insertion.
Single, Dual or Multiple Number of Rows
For a 1.0mm straight or vertical female header, the standard number of rows that Antenk offers ranges from 1 to 2 rows. However, customization can be available if 3 ,4 or n number of rows is needed by the customer. Also, the number of contacts for the single row is about 2-40 pins while for dual row, the number contacts may vary from 2-80 pins.
Pin Material
The pins of the connector attached to the board have been designed with copper alloy. With customer`s demand the pins can be made gold plated.
Custom 1.0mm Pitch Female Headers
Customizable 1.0 mm pitch female headers are also available, making your manufacturing process way faster as the pins are already inserted in the headers, insulator height is made at the right size and the accurate pin length you require is followed.
Parts are made using semi-automated manufacturing processes that ensure both precision and delicacy in handling the headers before packaging on tape and reel.
Tape and Reel Packaging for SMT Components
Antenk's SMT headers are offered with customizable mating pin lengths, in which each series has multiple number of of circuits, summing up to a thousand individual part number combinations per connector series.
The tape and reel carrier strip ensures that the headers are packaged within accurately sized cavities for its height, width and depth, securing the headers from the environment and maintaining consistent position during transportation.
Antenk also offer a range of custom Tape and reel carrier strip packaging cavities.
Female Header Connector,0.8Mm Female Pin Header,0.8Mm Female Header,0.8Mm Pcb Header, Pitch 0.8mm Board to Board Connectors
ShenZhen Antenk Electronics Co,Ltd , http://www.coincellholder.com