Introduction to pin header connector

Introduction to pin header connector

Pin header connector, a type of connector, English name: Pin Header.

This connector is widely used in PCB circuit boards in electronics, electrical appliances, and meters. Its role is to serve as a bridge between blocked or isolated circuits in the circuit, and carry the current or signal transmission task. It is usually used in combination with a female header to form a board-to-board connection; or used with an electronic harness terminal to form a board-to-wire connection; it can also be used independently for board-to-board connection.

Since the specifications required by different products are not the same, there are also various types of pin headers, which are classified according to the pin connector standards of the electronics industry:

According to the pitch, it can be divided into 2.54mm, 2.00mm, 1.27mm, 1.00mm, and 0.8mm. There are single-row, double-row, and three-row pins according to the number of rows. / Stand-up), plug-in DIP (Straight Plug / Bent Plug), etc .; divided according to the installation method: 180 ° is represented by S, 90 ° is represented by W, and SMT is represented by T.

Board-to-board connector

Number of rows: single, double, three, four, up to four.

Number of needles: 02 to 80

Pins: straight, bent, SMT; pin size.

Dimensions: overall dimensions length, width, thickness, spacing.

Pitch: There are 0.8, 1.0, 1.27, 2.0, 2.54 pitches.

Material: refers to the contact material and surface treatment, insulator material.

Packaging: blister pack, roll bag, bulk.

Material: Pin material: Brass or phosphor bronze; Insulator material: Plastic UL94V-0.

Surface treatment: gold plating 0.8μ, tin plating, nickel plating.

Processing technology: The pin processing technology process is mainly as follows: firstly use brass (or phosphor bronze) to process the pins,

According to the requirements, first nickel plating and then gold plating, then use the mold to process the insulator part, and finally measure the ruler on the special equipment.

Inch requires inserting pins into the insulator.

Remarks: There are many factors that affect the price, usually the most affected are gold plating and needle length.

Pin Hearder parameters example

Features: single and double rows, straight and curved needles with 2.54mm and 3.96mm pin pitch, various stitch lengths



Mis-insertion is a kind of wrong behavior caused by carelessness in the operation process of the staff, which will not only lead to the normal operation of the equipment, but also may lead to the circuit short circuit in serious cases, so the requirements on the prevention of anti-missing insertion are very high.

The prevention of misplacement mainly starts from the following aspects:

On the one hand, the line of wire connector itself, rotate one hundred and eighty degrees, if misalignment error can lead to signal an error, so at this time requires attention as far as possible choose lines to prevent mistaken insertion of the connector, it can avoid this kind of error, but also can avoid the equipment damage, can also by adjusting the line to line the relative position in the connector configuration only.

On the other hand, when the manufacturer USES the same connector, it is very likely to plug A into B socket, this situation needs special attention, because once this happens, the consequences will be very serious, must be connected to AB interface for different socket can be.

And the use of wire to wire connector can avoid this kind of situation to a certain extent, so it is suggested that in order to reduce the types of materials, or to save costs of manufacturers, in the process of use, must choose reliable and safe wire to wire connector products, so that their equipment can be well protected.

Although the anti-misplacement effect of wire-to-wire connector cannot be completely solved now, with the development of science and technology and the update of products, we believe that solutions will be found in the future.

Quality and application areas of pin headers

Quality and application areas of pin headers

Quality is the guarantee of business development and livelihood. In all the company’s production and operation activities, insisting on quality first is a prerequisite for us to settle in the mall and obtain benefits.

Nowadays, the fields and occupations of pin headers and female headers are more and more extensive, so we know where are the header needles and female headers generally used? Where is the primary application area of ​​pin headers and pin headers, as explained below:

Although pin headers and female headers have hot-plug specifications, most of the current pin headers are planned for internal hard disks. The maximum number of insertions and removals is only about 200. Beyond this number of insertions and removals, the pin connector will deteriorate. It may even cause damage to the hard disk. Even if it is used for external application, the number of insertion and removal is still only about 2,500 times.

Pin headers and mother headers are driven by the two layers of skill advancement and cost reduction. The skill strength and industrial position of the pin headers will determine the speed of development of related enterprises in China. Because the emergence of new skills requires electronics companies to keep up with the pace of technological progress, and the position of industry also determines the position of enterprises in upstream and downstream price negotiations.

There are also many factors to consider when the round pin header is connected, and it also needs to consider the requirements of touch resistance and mechanical stability. The size and shape of the solder joint depends on the welding skills and the planning of the adapter itself. There are obvious differences between these two aspects of through-hole and surface adhesion skills. The development of connectors is becoming more and more compact, and the solder joints and their functions (especially the functions of mechanical strength and plastic deformation under load) become more and more More and more important. Because round hole pin headers must pay attention to these when they are connected, try not to affect the advantages of round hole pin headers due to these aspects.

In large and medium-sized cities, flat-panel TVs have entered a substantive stage, but many consumers feel confused as they face a shopping mall where price scales are intertwined, skills and functions are redundant, and high-end and low-end products “grow together”. Improved production process pin header and female header simplify the installation process of electronic products. It also simplifies the batch production process and is easy to repair. If an electronic component fails, the failed component can be quickly replaced when a pin header is installed to facilitate the promotion. With the improvement of skills, the component can be updated when the pin is installed.

Board to board connector connection problem and fault handling

How to choose the right connector

The correct connection between board and board connector products can improve the service life of products.

Ensure good operation of machinery and equipment.The failure and untimely treatment of board – to – board products will bring inestimable economic losses.
1. Connection of board and board connector
The board to board plug socket is used to electrically connect two separate circuit boards,These include a first connector to the circuit board guide and a transport connector for a serial connection to the first connector,
The first connector has a first terminal connected to the board guide and a body containing the first terminal.
The transfer connector has a second terminal and a body containing the second terminal. The two extended ends of the second terminal can be inserted separately from the first terminal.
To achieve a conductive connection with the first connection arranged on the two circuit boards, wherein the first terminal and the second terminal are provided with an elastic part with a reverse bend at both ends.
And the body and the second terminal can choose the appropriate extension length according to the standard of circuit board spacing.

2. Fault handling of plate-to-plate connectors
Once the product fails, it can be judged that the reason is the use of broken wires, loose products and so on.
The frequency of the intermediate filaments is not high and most of them are intermittent at the joints, so the focus of the inspection should be on the sensors and the connecting wires.
Check to see if they have loose or poor contact problems.Generally due to circuit fault caused by poor contact, mostly due to product end corrosion,
External fouling enters terminals or connector sockets, resulting in reduced contact pressure.To handle this failure, you need to remove the connector and then re-insert it,
Change its connection conditions so that it can resume normal contact.

How to choose the right connector

How to choose the right connector

(1)A good conductive properties: low-frequency connectors required insulation resistance and high dielectric strength, and general contact with the ground between the insulation resistance should be greater than 1Ω; in 0.44MPa’s low pressure, the test voltage of 500V, do not arcing and breakdown phenomena. High-frequency connectors, in addition to the above requirements are met, the requirements of the high-frequency dielectric loss, dielectric constant is small.
(2)high temperature: heat distortion temperature above 200 ℃, high temperature resistance in the surface mount technology or welding and can be resistant to heating temperature of the usual connectors.
(3)the performance of the arc resistance: to ensure that resistance to arcing in the patch installation process damage to the plastic.
(4)flame retardant: to prevent the occurrence of short circuits, abnormal fire in order to avoid the health hazards of toxic gases, it is best to use halogen-free flame-retardant materials.
(5)excellent physical properties: toughness to prevent thrust; high flexural strength and to prevent the deformation of the force; specific test conditions for shock and vibration conditions (vibration frequency 20 ~ 60Hz, acceleration of 5g), and plug the 500 The plastic parts do not appear to mechanical damage and fracture phenomena.
(6) applies placed Insert: linear expansion coefficient is small, still firmly insert links to the temperature change.
High dimensional stability in the specific use of the process, force creep is small, does not warp, after warming, small expansion. General requirements for dimensional accuracy to maintain contact between the pitch of the six.
(7)processing flow is better: to comply with the requirements of an increasing miniaturization of electronic connectors.
(8)Good solvent resistance.: Plastic parts affected by the solvent effect should not be subject to corrosion and cracking.
(9)does not produce corrosive gases: plastic parts during use should not generate corrosive gases, the silver layer to prevent the conductive properties affect the connector contacts.

What are FPC/FFC cables used for?

What are FPC/FFC cables used for?

FPC/FFC cables are increasingly used to connect LCD panels to printed circuit boards or to connect two printed circuit boards in a wide range of products and equipment, such as industrial equipment, home appliances, printers, LCD TV sets, and mobile devices. This has led to increased demand for connectors applicable for these cables.

With conventional rotary lock connectors, the rotary slider is positioned at the FPC/FFC socket. The drawback of this is that lifting an FPC/FFC or applying excessive force may cause the rotary latch to disengage. The new OMRON XF3M solves this drawback by employing a rotary backlock mechanism in which the rotary latch is located on the opposite side of the socket. This mechanism also enables the socket to be constructed with a four-sided housing that securely holds the FPC/FFC cable for enhanced mounting reliability. A sharp “click” on engagement makes it easy to confirm that the latch is completely locked. These features add up to improved work efficiency for cable mounting.

– The four-sided housing construction of the FPC/FFC socket prevents displacement of the cable.
– A sharp “click” makes it easy to ascertain that the FPC/FFC cable is securely locked in position.
– Available in two types — 0.5 mm and 1.0 mm pitches.
– Halogen free.
The molded parts use LCP (Liquid Crystal Polymer) resins. Its halogen-free construction makes the XF3M environmentally friendly.

Personal opinion of wire-to-board connectors

Personal opinion of wire-to-board connectors

The connector’s expert should be aware what’s the wire-to-board connector?it actually means the connection between wire and PCB,the key functions for connector is power and signal’s transmission. therefore, we may remark that wire-to-board connector is the pioneer for all connectors.Type of wire-to-board connectors can be varied according to different application and requirements to connector, most of which are distinguished by the distance between the pins, the current and voltage transmitted.Their pitch:0.5mm/0.8mm/1.0mm/1.2mm/1.5mm/2.0mm/2.5mm……

Currently, the high ranking suppliers for w-b are including ,MOLEX、TE、FCI、JAE、JST etc.In terms of connectors’ selling mode, mainly are production to selling directly or via Distributor.LHE Connectors is now the supplier who could fully compatible with all such first-tier suppliers.The connector manufacturers mainly use the scientific production mode to refine the production and sales of wire-to-board connectors according to market development needs.

Why go to shows and exhibitions?

Why go to shows and exhibitions?

Twenty years ago, companies were using large exhibitions to present their new products. Today, the web outperforms any exhibition in timing and in data quality.  In the old days, a catalogue sheet handed out was O.K – today you can download 3D files for any product immediately.

Why is it, that there are still exhibitions – and why go there?

YES, there are advantages, for the exhibitors and the visitors.

I know many customers who say: I can visit all my suppliers within a day or two. I can talk, find solutions, meet with the specialists and solve my problems on the spot. I can even have several solutions from several competitors and compare.

Personally, I always calculate how much travel expense I would generate seeing all these customers in such a tight window (even not considering the time to travel throughout Europe, in my case).

Americans are always surprised about the number of days such a show is going on in Europe. From my experience I can say: the show is somehow too short when you close at the last day and you find that you have not been able to see for yourself what competition is offering. So during the days I use the customers visiting me as source of information.

… or you may just visit the reception desk and ask for a product or a host.

Common fault analysis and simple handling of connectors

Common fault analysis and simple handling of connectors

Now it is a common phenomenon to use connectors, especially when there are some small problems. If it is not a matter of principle, it is quite convenient to learn how to deal with it by yourself, which can also improve efficiency.

First said the most common connector poor contact problem,there are a lot of reasons, sometimes is a small problem, so in the electronic device failure occurs when the first question to consider is the contact problem, be sure to check all the joints, under the condition of compact connection to consider other problems, if not problem of internal connections, through a simple dial operation can repair it well.This one of the other issues that need to be attention, that is in the process of using the protection of the connector, it is also very important, sometimes poor contact because of the improper protection of at ordinary times, we caused the local damage or from corrosion of connector, this kind of situation caused by the poor contact is generally difficult to repair, need to replace butt plug-in processing, is not only a trouble, or source of waste and economic losses.

Connectors of another common problem is that poor insulation, the main also said external environment influence, this kind of circumstance appears commonly performance is not stable, the leakage phenomenon is more terrible, may cause the unsafe factors in the use, intuitive can be observed, but such problems must stop the work of the connector, and directly replace new.Here also comes to a problem that is the cause of the defective insulation, if they are substandard insulation materials, is wrong, we choose if there is a kind of situation is caused by environmental impact, that is what we caused by improper use and protect the poor, particularly humid environment corrosion damage to the connector insulation more let us very entanglements, this must be the day to avoid, in order to avoid more unnecessary loss, especially of electrical leakage protection, and may involve the people safety.

There is a common problem in the process of plug-in use that is the problem of poor fixation, but thiscan generally be avoided by changing the way of installation in particular to pay attention to the rationality of installation, installation and use of the close integration, this problem will not appear.