L717SDDG50P vs L77SDB25S1ACH4F
| Part Number |
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| Category | D-Sub Connectors | D-Sub Connectors |
| Manufacturer | Amphenol ICC (Commercial Products) | Amphenol ICC (Commercial Products) |
| Description | CONN D-SUB PLUG 50P STR SLDR CUP | CONN D-SUB RCPT 25POS R/A SOLDER |
| Package | - | - |
| Series | SD | SD |
| Features | Grounding Indents | Board Lock |
| Mounting Type | Free Hanging (In-Line) | Through Hole, Right Angle |
| Termination | Solder Cup | Solder |
| Current Rating | 5A | 5A |
| Contact Finish | Gold | Gold |
| Number of Positions | 50 | 25 |
| Connector Type | Plug, Male Pins | Receptacle, Female Sockets |
| Contact Finish Thickness | Flash | Flash |
| Number of Rows | 3 | 2 |
| Connector Style | D-Sub | D-Sub |
| Contact Type | Signal | Signal |
| Flange Feature | Cable Side (M3) | Mating Side, Female Screwlock (4-40) |
| Shell Material, Finish | Steel, Tin Plated | Steel, Tin Plated |
| Material Flammability Rating | UL94 V-0 | UL94 V-0 |
| Shell Size, Connector Layout | 5 (DD, D) | 3 (DB, B) |
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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. 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 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.
