DCM21WA4S 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 RCPT 21POS PNL MNT | CONN DSUB RCPT 7POS R/A SLDR CUP |
| Package | - | - |
| Series | Combo D?, D*M | Combo D?, D*M |
| Features | 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 | Receptacle, Female Sockets | 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, Yellow Chromate Plated Zinc | 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. Specifications and models of D-SUB connectors
There are many specifications and models of D-SUB connectors, and the common ones are D-SUB 9-pin, D-SUB 15-pin, D-SUB 25-pin and other series. These series have their own scope of application and characteristics. Users can choose the appropriate specifications and models according to actual needs. At the same time, the prices of different specifications and models are also different. Users need to consider factors such as cost and applicability when choosing.
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2. 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. -
3. FAQ of D-SUB Connector
D-SUB connector connection is poor
Performance: shell damage, bayonet connector loose or stuck after plugging.
Cause: internal defects of the connector, external force damage.
Solution: Check and repair internal defects of the connector and avoid external force damage.
D-SUB connector oxidation What are the manifestations?
Performance: increased contact resistance.
Cause: environmental factors and current effects.
Solution: Clean and maintain the connector regularly, and use a protective cover to avoid pin exposure.
What problems are caused by deformation of D-SUB connector?
Performance: Affects contact area and stability.
Cause: Mechanical pressure or temperature change.
Solution: Avoid excessive mechanical pressure and check connector status regularly. -
4. FAQ of D-SUB Connector
What is the reason for no signal in D-SUB connector?
Performance: No signal.
Solution: Check whether the signal cable is plugged in properly and ensure stable connection. 3.
D-SUB connector causes the monitor to fail to display.
Performance: The monitor cannot display.
Solution: Adjust the computer resolution to the highest resolution supported by the monitor.
What is the reason for poor connection of D-SUB connector?
Performance: Poor connection.
Cause: The pin is exposed and easily damaged.
Solution: Use a protective cover to avoid pin exposure and operate carefully.
