ERM8-025-08.0-L-DV-DSS-K-TR vs ERM8-49-5.0-L-DV-DS-EGP-K-TR
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| Category | Rectangular Connectors - Arrays, Edge Type, Mezzanine (Board to Board) | Rectangular Connectors - Arrays, Edge Type, Mezzanine (Board to Board) |
| Manufacturer | Samtec Inc. | Samtec Inc. |
| Description | .8MM EDGE RATE TERMINAL ASSEMBLY | .8MM EDGE RATE TERMINAL ASSEMBLY |
| Package | - | - |
| Series | Edge Rate? ERM8 | Edge Rate? ERM8 |
| Features | Board Guide, Mating Guide, Pick and Place | Board Guide, Mating Guide, Pick and Place |
| Mounting Type | Surface Mount | Surface Mount |
| Contact Finish | Gold | Gold |
| Number of Positions | 50 | 98 |
| Pitch | 0.031" (0.80mm) | 0.031" (0.80mm) |
| Height Above Board | 0.351" (8.91mm) | 0.351" (8.91mm) |
| Connector Type | Differential Pair Array, Male | Differential Pair Array, Male |
| Contact Finish Thickness | 10µin (0.25µm) | 10µin (0.25µm) |
| Number of Rows | 2 | 2 |
| Mated Stacking Heights | 10mm, 12mm, 15mm | 10mm, 12mm, 15mm |
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1. What is a rectangular connector?
A rectangular connector is a connector with a basically rectangular shape and a basically rectangular mating surface. It is also an important category in the connector family. There are many varieties and specifications, and it is also widely used. It should be pointed out that the classification of rectangular connectors and printed circuit board connectors, strip connectors, and ribbon cable connectors is sometimes not strictly defined. For the same type of connector, some manufacturers classify it as a rectangular connector (approximately rectangular in shape), some as a printed circuit board connector (used in printed circuits), some as a strip connector (approximately long in shape), and some as a ribbon cable connector (connected with a ribbon cable). It is widely used in indoor cable connections, internal connections of equipment, and occasions where multiple rows of assembly are required.
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2. Types of rectangular connectors?
1. In the past, it was mainly produced by enterprises under the Ministry of Electronics Industry, such as CA, CB, and CD rectangular connectors.
2. Now it is more commonly used, mainly produced by enterprises under the Ministry of Electronics.
3. J-type rectangular connectors, mainly produced by enterprises under the Ministry of Aviation and Aerospace.
4. Rectangular connectors produced according to the national military standard (GJB).
5. Rectangular connectors produced according to the International Electrotechnical Commission (IEC) standard.
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3. How to connect rectangular connectors?
1. Crimping: It has high mechanical strength, good electrical performance, and high reliability.
2. Welding: It has the advantage of simple operation. However, it is easy to form a cold solder joint that is not easy to find due to welding methods, operating space, etc.
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4. Common packaging methods for rectangular connectors?
1. Panel-mounted packaging
Panel-mounted packaging is the most common form of rectangular connector, which allows the connector to be directly fixed to the housing or panel of the device. This packaging method is usually achieved by screw locking, snap-on fixing or crimping to ensure a stable connection between the connector and the panel. The advantages of panel-mounted packaging are easy and quick installation, easy maintenance and replacement, and good mechanical strength and protection level. It is suitable for scenarios that require frequent plugging and unplugging or high protection requirements, such as industrial control equipment, communication equipment, medical equipment, etc.
2. PCB Mounting Package
PCB mounting packaging is another widely used rectangular connector packaging method. It directly solders the connector on the PCB (printed circuit board) and realizes electrical connection through pins or pads. This packaging method has the advantages of small size, light weight, flexible layout, etc., which can save space to the maximum extent and improve the integration of the circuit board. It is widely used in computers, consumer electronics, automotive electronics and other fields, especially in occasions with extremely high space requirements, such as mobile phones, tablets and other portable devices.
3. Pin header and socket combination packaging
The pin header and socket combination packaging is a packaging form in which the two parts of the connector (pin header and socket) are designed separately and then electrically connected by plugging. This packaging method is easy to plug and unplug and easy to replace and upgrade, and is particularly suitable for scenarios where frequent module replacement or system upgrade is required. For example, in the fields of test equipment, modular data centers, etc., the pin header and socket combination packaging can significantly improve the flexibility and maintainability of the system.
4. Mixed packaging
With the continuous development of electronic technology, a single packaging method has been difficult to meet the complex and changing application requirements. Therefore, mixed packaging came into being, which combines multiple packaging methods to form a comprehensive solution. For example, combining panel mounting with printed circuit board mounting not only ensures the stability of the connector, but also improves the integration of the circuit board; or combining the pin and socket combination with modular design to achieve a more flexible and changeable system configuration.
5. Special environmental adaptability packaging
In some special environments, such as high temperature, low temperature, high humidity, strong electromagnetic interference, etc., higher requirements are placed on the packaging method of rectangular connectors. To this end, a variety of special environmental adaptability packages have been developed, such as high temperature resistant packaging, waterproof packaging, anti-electromagnetic interference packaging, etc. These packaging methods improve the environmental adaptability of the connector by using special materials and optimizing structural design, ensuring that it can still work stably and reliably in harsh environments.
