L17H2DE2120 vs 189-037-313R671
| Part Number |
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| Category | D-Sub Connectors | D-Sub Connectors |
| Manufacturer | Amphenol ICC (Commercial Products) | NorComp Inc. |
| Description | CONN D-SUB PLUG/RCPT 37POS R/A | CONN D-SUB PLUG/RCPT 37POS R/A |
| Package | - | - |
| Series | 17H | 189 |
| Features | Board Lock, Grounding Indents, Shielded | Board Lock, Grounding Indents, Shielded |
| Mounting Type | Through Hole, Right Angle | Board Edge, Through Hole, Right Angle |
| Termination | Solder | Solder |
| Current Rating | 3A | 5A |
| Contact Finish | Gold | Gold |
| Number of Positions | 37, 37 | 37, 37 |
| Connector Type | Plug, Male Pins; Receptacle, Female Sockets | Plug, Male Pins; Receptacle, Female Sockets |
| Contact Finish Thickness | 30µin (0.76µm) | Flash |
| Number of Rows | 2, 2 | 2, 2 |
| Connector Style | D-Sub - Stacked | D-Sub - Stacked |
| Contact Type | Signal | Signal |
| Flange Feature | Board Side (4-40) | Mating Side, Female Screwlock (4-40) |
| Shell Material, Finish | Steel, Tin Plated | Steel, Nickel Plated |
| Material Flammability Rating | UL94 V-0 | UL94 V-0 |
| Shell Size, Connector Layout | 4 (DC, C); 4 (DC, C) | 4 (DC, C); 4 (DC, C) |
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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. 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
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.
