DCM-21WA4P-K87 vs DAMP7W2SA197
| Part Number |
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| Category | D-Sub Connectors | D-Sub Connectors |
| Manufacturer | ITT Cannon, LLC | ITT Cannon, LLC |
| Description | CONN D-SUB PLUG 21POS PNL MNT | CONN DSUB RCPT 7POS R/A SLDR CUP |
| Package | - | - |
| Series | Combo D?, D*M | Combo D?, D*M |
| Features | Grounding Indents, Shielded | Mounting Brackets, Shielded |
| Mounting Type | Panel Mount | Panel Mount, Right Angle |
| Termination | Solder Cup | Solder Cup |
| Current Rating | 7.5A | 7.5A |
| Contact Finish | Gold | Gold |
| Number of Positions | 21 (17 + 4 Coax or Power) | 7 (5 + 2 Coax or Power) |
| Connector Type | Plug, Male Pins | Receptacle, Female Sockets |
| Contact Finish Thickness | Flash | Flash |
| Number of Rows | 2 | 2 |
| Connector Style | D-Sub, Combo | D-Sub, Combo |
| Contact Type | Signal and Coax or Power (Not Included) | Signal and Coax or Power (Not Included) |
| Flange Feature | Housing/Shell (Unthreaded) | Cable Side (4-40) |
| Shell Material, Finish | Steel, Tin-Nickel Plated | Steel, Tin-Nickel Plated |
| Material Flammability Rating | UL94 V-0 | UL94 V-0 |
| Shell Size, Connector Layout | 4 (DC, C) - 21WA4 | 2 (DA, A) - 7W2 |
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1. Features of D-SUB connector
1. Easy plugging and unplugging: The D-SUB connector adopts a push-pull plug-in design, which is convenient and fast, and can quickly connect and disconnect the circuit.
2. Reliable contact: The contact of the D-SUB connector is made of high-quality metal material, which is precisely processed and gold-plated, and has good conductivity and long service life.
3. Wear resistance: The contact of D-SUB connector is made of wear-resistant material, which can withstand frequent plugging and unplugging and long-term use, and is not easy to be damaged.
4. Multiple specifications: D-SUB connectors have multiple specifications, suitable for different cables and sockets, and the appropriate specifications can be selected according to actual needs.
5. High reliability: The design of D-SUB connectors focuses on reliability. After strict quality control and testing, it can ensure that there will be no problems such as poor contact or short circuit during use. -
2. Classification of D-SUB connectors
Solder cup D-Sub connector: This connector meets commercial industrial standards and can be paired with any docking solder cup D-Sub connector. The contacts are electroplated with flash gold, and the connector insulator meets the UL94V-0 standard. The maximum wire size is 20 AWG, and 9, 25, 37 and 50 pin specifications are available.
Crimp D-Sub connector: Crimp D-Sub connectors meet commercial industrial standards and can be used for most standard D-Sub male connectors. Compatible with 20-28 AWG wire range, available in 9, 15, 25 and 50 pin sizes.
Punch-type D-Sub connector: This connector is easily soldered into the through-hole of the printed circuit board or used in many other applications. Solder placement follows a standard footprint, and gold-plated contacts ensure long life. As an industrial standard commercial DB37 female PCB type connector, it has standard mounting holes for application flexibility. -
3. Applications of D-SUB full range of connectors
1. Computer field: D-SUB connectors are widely used in the computer field, such as the connection of external devices such as monitors, keyboards, mice, etc.
2. Communication field: D-SUB connectors can be used for signal transmission between various communication devices, such as telephones, fax machines, routers, etc.
3. Industrial control field: D-SUB connectors are widely used in the industrial control field, such as the connection of PLCs, sensors, actuators and other equipment.
4. Automation field: D-SUB connectors can be used for signal transmission and power supply in automation equipment, such as robots, automated assembly lines, etc.
5. Other fields: In addition to the above fields, D-SUB connectors can also be used in other fields such as security, lighting, and medical equipment. -
4. Problems caused by poor contact of D-SUB connectors
Performance: increased contact resistance, circuit breakage, contact curtain movement, etc.
Causes: inadequate connection, insufficient contact area, dirt, corrosion, oxidation, etc.
Solution: Re-plug the connector, clean the connection part (use alcohol or other cleaning agents), replace the contact or connector.
