DCM27W2P500MN vs L77TWB17W2SMSVRM6
| Part Number |
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| Category | D-Sub Connectors | D-Sub Connectors |
| Manufacturer | Amphenol ICC (FCI) | Amphenol ICC (Commercial Products) |
| Description | CONN D-SUB PLUG 27POS R/A SOLDER | CONN D-SUB RCPT 17POS R/A SOLDER |
| Package | - | - |
| Series | DMW HE507 | TW |
| Features | Mounting Brackets | Board Lock, Mounting Brackets |
| Mounting Type | Through Hole, Right Angle | Panel Mount, Through Hole, Right Angle |
| Termination | Solder | Solder |
| Current Rating | 7.5A | 7.5A |
| Contact Finish | Gold | Gold |
| Number of Positions | 27 (25 + 2 Power) | 17 (15 + 2 Coax or Power) |
| Connector Type | Plug, Male Pins | Receptacle, Female Sockets |
| Number of Rows | 2 | 2 |
| Connector Style | D-Sub, Combo | D-Sub, Combo |
| Contact Type | Signal and Power (Not Included) | Signal and Coax or Power (Not Included) |
| Flange Feature | Housing/Shell (Unthreaded) | Housing/Shell (Unthreaded) |
| Shell Material, Finish | Steel, Yellow Cadmium Plated | Steel, Tin Plated |
| Material Flammability Rating | UL94 V-0 | - |
| Shell Size, Connector Layout | 4 (DC, C) - 27W2 | 3 (DB, B) - 17W2 |
| Contact Finish Thickness | - | 16µin (0.40µm) |
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1. 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. -
2. 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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3. 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. -
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.
