DCM-21WA4P-K87 vs DAMC7W2SA197
| 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 | Board Lock, 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. What is a D-SUB connector
The name of the D-SUB connector comes from the D-shaped appearance of its plug. It is a double-row cable connector widely used in computer, industrial automation and communication fields. This connector consists of two parts: a plug and a socket. It is connected through pinholes and pins. It can transmit video, audio and digital signals and provide a large number of grounding points.
The D-SUB connector is a compact and versatile connector mainly used to support power, analog, RF or digital signal transmission. It has a variety of models, options and accessories and is a very economical interconnection solution. -
2. 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. -
3. D-SUB connector insulation is poor
Performance: short circuit, insulation resistance is too poor.
Cause: high humidity in the use environment, serious pollution, water or other liquids penetrate into the insulator, etc.
Solution: Improve the use environment, clean the inside of the insulator, and replace the insulator. -
4. FAQ of D-SUB Connector
What is the reason for slow data transmission of D-SUB connector?
Performance: Slow or interrupted data transmission.
Cause: Inherent characteristics of serial communication.
Solution: Use faster communication standards or increase communication stability measures 24.
D-SUB connector signal attenuation
Symptom: Signal attenuation.
Cause: Long-distance transmission characteristics.
Solution: Use higher quality cables or add signal amplifiers.
