LSHM-120-03.0-L-DV-A-S-TR vs 55740-001LF
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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. | Amphenol ICC (FCI) |
| Description | 0.50MM TERMINAL/SOCKET COMBO | ARRAY FEMALE 200POS 1.3MM GOLD |
| Package | - | - |
| Series | Razor Beam? LSHM | GIG-Array?, MezzSelect? |
| Features | Board Guide, Shielded | - |
| Mounting Type | Surface Mount | Surface Mount |
| Contact Finish | Gold | Gold or Gold, GXT™ |
| Number of Positions | 40 | 200 Signal (100 Pair) |
| Pitch | 0.020" (0.50mm) | 0.051" (1.30mm) |
| Height Above Board | 0.175" (4.45mm) | 0.419" (10.64mm) |
| Connector Type | Self Mating, Non-Gendered | Differential Pair Array, Female |
| Contact Finish Thickness | 10µin (0.25µm) | 30µin (0.76µm) |
| Number of Rows | 2 | 18 |
| Mated Stacking Heights | 5.5mm, 6mm, 7mm, 9mm | 15mm, 17mm, 18mm, 20mm, 25mm, 30mm |
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1. Rectangular connector usage environment?
1. Ambient temperature: refers to the use within the ambient temperature specified by the product. Even if the external ambient temperature is not high, if the product works in the chassis, the heat dissipation conditions are poor and the heating of other components will cause the ambient temperature of the product to be much higher than the external ambient temperature. Using it beyond the specified ambient temperature can also damage the metal plating or insulator.
2. Humidity or water: Humidity or water will form a water film on the surface of the insulator, which will reduce the insulation performance and even cause miscommunication between adjacent contact parts. Generally, connectors that are used in high humidity or water conditions for a long time should use sealing connectors.
3. Low air pressure: The air pressure will decrease under high altitude conditions (except in a constant air pressure sealed chamber). When the product is under low air pressure conditions, the dielectric withstand voltage of the product will decrease. If the transmitted voltage is higher than the requirements of the product technical conditions, electrical breakdown may occur, causing failure.
4. Corrosive environment: refers to the atmosphere around the product when it is working, such as salt spray at sea, acid and alkali in chemical raw material storage warehouses, etc. These conditions will cause corrosion and erosion to the metal parts and insulators of the connector. When selecting connectors, special requirements can be made to the manufacturer or products that can meet these requirements can be selected.
5. Mechanical conditions: refers to mechanical effects such as vibration, impact, acceleration, etc., and are selected according to the parameters in the micro-rectangular connector sample. In fact, in actual use, the cable and the contact should be crimped and fixed with a wire clamp or other means. Cables that are too long and have no fixing measures will endanger the safety of the cable under the action of external forces such as vibration or impact. In severe cases, it will cause cable breakage and micro-rectangular connector damage. -
2. Application fields of rectangular industrial connectors?
1. Industrial fields: automated numerical control, hot runner molds, injection molding machines, etc.;
2. Machinery industry: robotics industry, engineering automation, automotive industry, escalators, elevators, printing industry, textile industry, engineering machinery, lathes, plastic processing machinery, metal processing and wood processing machinery, food and beverage processing and packaging machinery;
3. Energy industry: power industry, wind energy industry;
4. Transportation technology: railway transportation, etc. -
3. What are the types of rectangular connectors?
1. Pin-type rectangular connector: This is the most common type of rectangular connector. The metal pin is inserted into the interface hole and rotated to tighten to achieve conductive connection.
2. Snap-on rectangular connector: It is fixed with self-locking mechanisms such as spring sheets or clips, and is suitable for use in vibration environments.
3. SMD rectangular connector (SMT type): It is suitable for use in surface mount technology (SMT), which is convenient and fast.
4. Board-to-board rectangular connector: Mainly used for interconnection of board-level and system-level circuits, with the characteristics of high-density connection, low plug-in and pull-out times, and easy maintenance.
5. Wire-to-board rectangular connector: Suitable for the connection of internal signals and power of equipment, can withstand high current and high temperature environments, and has the advantages of easy installation and convenient maintenance. -
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.
