DCM27W2SN vs L77HDD78SD1CH4R
| Part Number |
|
|
| Category | D-Sub Connectors | D-Sub Connectors |
| Manufacturer | Amphenol ICC (FCI) | Amphenol ICC (Commercial Products) |
| Description | CONN D-SUB RCPT 27P STR SLDR CUP | CONN DSUB HD RCPT 78POS R/A SLDR |
| Package | - | - |
| Series | DM | HD |
| Mounting Type | Free Hanging (In-Line) | Through Hole, Right Angle |
| Termination | Solder Cup | Solder |
| Current Rating | 7.5A | 3A |
| Contact Finish | Gold | Gold |
| Number of Positions | 27 (25 + 2 Power) | 78 |
| Connector Type | Receptacle, Female Sockets | Receptacle, Female Sockets |
| Number of Rows | 2 | 4 |
| Connector Style | D-Sub, Combo | D-Sub, High Density |
| Contact Type | Signal and Power (Not Included) | Signal |
| Flange Feature | Housing/Shell (Unthreaded) | Board Side (4-40) |
| Shell Material, Finish | Steel, Cadmium Plated | Steel, Tin Plated |
| Material Flammability Rating | UL94 V-0 | UL94 V-0 |
| Shell Size, Connector Layout | 4 (DC, C) - 27W2 | 5 (DD, D) High Density |
| Features | - | Board Lock |
| Contact Finish Thickness | - | Flash |
-
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. 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. -
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 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.
