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L77SDEG09S - Equivalent & Substitute Parts
Part Overview
The L77SDEG09S is a 9-position D-Sub receptacle connector manufactured by Amphenol ICC with female sockets, designed for signal applications. This connector features solder cup termination and is rated for 3A at 250V, suitable for operating temperatures from -55°C to 105°C. The part is currently active in production and RoHS compliant.
Substitute parts are identified for applications requiring alternative mounting configurations, enhanced current handling, or different connector geometries while maintaining electrical and mechanical compatibility within the D-Sub 9-position, 2-row (Shell Size 1/DE-E) standard.
Substiute Parts
Key Parameters
| Parameter | L77SDEG09S |
|---|---|
| Manufacturer | Amphenol ICC (Commercial Products) |
| Connector Style | D-Sub |
| Connector Type | Receptacle, Female Sockets |
| Number of Positions | 9 |
| Number of Rows | 2 |
| Shell Size, Connector Layout | 1 (DE, E) |
| Mounting Type | Free Hanging (In-Line) |
| Termination | Solder Cup |
| Current Rating (Amps) | 3A |
| Voltage Rating | 250V |
| Operating Temperature Range | -55°C ~ 105°C |
| Shell Material, Finish | Steel, Tin Plated |
| Contact Finish | Gold (Flash) |
| Material Flammability Rating | UL94 V-0 |
| RoHS Status | RoHS Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the L77SDEG09S is determined by compliance with the following mandatory parameters:
- Connector Family: D-Sub, 9-position, 2-row configuration (Shell Size 1/DE-E)
- Connector Type: Receptacle with female sockets
- Termination Method: Solder cup
- Electrical Performance: Minimum current rating of 3A and voltage rating of 250V
- Environmental Compliance: RoHS compliance (RoHS Compliant or ROHS3 Compliant)
- Operating Temperature: -55°C to 105°C capability
- Flammability Rating: UL94 V-0
Substitute parts are grouped by mounting configuration: free-hanging (in-line) and panel-mount variants. Free-hanging variants (TE Connectivity 5-747905 series) provide direct replacement capability. Panel-mount variants (NorComp 171-009 series) are suitable for applications requiring fixed housing installation with different flange feature configurations.
Parameter Comparison
| Parameter | L77SDEG09S (Amphenol ICC) | 5-747905-2 (TE Connectivity) | 5-747905-5 (TE Connectivity) | 5-747905-7 (TE Connectivity) | 171-009-203L021 (NorComp) | 171-009-203L031 (NorComp) |
|---|---|---|---|---|---|---|
| Connector Type | Receptacle, Female Sockets | Receptacle, Female Sockets | Receptacle, Female Sockets | Receptacle, Female Sockets | Receptacle, Female Sockets | Receptacle, Female Sockets |
| Number of Positions | 9 | 9 | 9 | 9 | 9 | 9 |
| Shell Size Layout | 1 (DE, E) | 1 (DE, E) | 1 (DE, E) | 1 (DE, E) | 1 (DE, E) | 1 (DE, E) |
| Mounting Type | Free Hanging (In-Line) | Free Hanging (In-Line) | Free Hanging (In-Line) | Free Hanging (In-Line) | Panel Mount | Panel Mount |
| Termination | Solder Cup | Solder Cup | Solder Cup | Solder Cup | Solder Cup | Solder Cup |
| Current Rating (Amps) | 3A | 3A | 3A | 3A | 5A | 5A |
| Voltage Rating | 250V | 250V | 250V | 250V | Not Specified | Not Specified |
| Operating Temperature Range | -55°C ~ 105°C | -55°C ~ 105°C | -55°C ~ 105°C | -55°C ~ 105°C | -50°C ~ 100°C | -50°C ~ 100°C |
| Shell Material, Finish | Steel, Tin Plated | Steel, Tin Plated | Steel, Tin Plated | Steel, Tin Plated | Steel, Nickel Plated | Steel, Nickel Plated |
| Contact Finish | Gold (Flash) | Gold (Flash) | Gold (Flash) | Gold (Flash) | Gold (Flash) | Gold (Flash) |
| Material Flammability Rating | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 |
| RoHS Status | RoHS Compliant | ROHS3 Compliant | ROHS3 Compliant | RoHS Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | Not Applicable | Not Applicable |
| Product Status | Active | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
Direct Equivalent (Free-Hanging Configuration): The TE Connectivity AMPLIMITE HD-20 series (5-747905-2, 5-747905-5, 5-747905-7) provides direct substitution for the L77SDEG09S. All variants maintain identical electrical performance (3A, 250V), operating temperature range (-55°C to 105°C), and mounting configuration (free-hanging in-line). These parts are active and RoHS/ROHS3 compliant. Selection among these variants depends on flange feature requirements (housing/shell unthreaded versus cable side 4-40).
Alternative for Panel Mount Applications: The NorComp 171-009 series (171-009-203L021, 171-009-203L031) offers panel-mount configuration for applications requiring fixed housing installation. These parts maintain the 9-position D-Sub receptacle configuration and solder cup termination with higher current rating (5A). Operating temperature range is slightly reduced (-50°C to 100°C) compared to the primary part. NorComp parts are ROHS3 compliant and have not applicable moisture sensitivity level classification.
Compliance Considerations: All recommended substitutes maintain UL94 V-0 flammability rating and gold-plated contacts. Selection should be based on specific mounting requirements and compliance documentation applicable to the end application.
Frequently Asked Questions (FAQ)
Q: Can the L77SDEG09S be directly replaced with NorComp 171-009 series connectors? A: The NorComp 171-009 series shares the 9-position D-Sub receptacle configuration and solder cup termination. However, these parts feature panel-mount geometry compared to the free-hanging in-line mounting of the L77SDEG09S. Direct mechanical substitution is not applicable unless the application design accommodates panel-mount installation.
Q: What is the difference between the TE Connectivity 5-747905 variants? A: All three variants (5-747905-2, 5-747905-5, 5-747905-7) maintain identical electrical specifications, operating temperature, and form factor. The differences are in flange feature configuration: 5-747905-2 and 5-747905-5 feature housing/shell unthreaded flanges, while 5-747905-7 features cable-side 4-40 flange. Selection is determined by mating interface requirements.
Q: Are there voltage or current limitations when substituting with NorComp parts? A: NorComp 171-009 series parts support higher current capacity (5A versus 3A) and are electrically compatible. However, specified voltage rating is not provided in the NorComp documentation. Verification of voltage adequacy for the specific application is required before substitution.
Q: Does the operating temperature range difference affect substitution suitability? A: The L77SDEG09S operates from -55°C to 105°C, while NorComp 171-009 series operates from -50°C to 100°C. For applications operating within the -50°C to 100°C range, substitution is appropriate. Applications exceeding these boundaries require the Amphenol or TE Connectivity variants.
Q: Are all recommended substitutes RoHS compliant? A: Yes. The L77SDEG09S carries RoHS Compliant status. TE Connectivity 5-747905 variants are ROHS3 Compliant or RoHS Compliant (5-747905-7). NorComp 171-009 series parts are ROHS3 Compliant. All meet RoHS requirements for regulated applications.
Q: What is the moisture sensitivity classification for these connectors? A: The L77SDEG09S and TE Connectivity variants are classified as MSL 1 (Unlimited). NorComp parts carry Not Applicable MSL classification. For moisture-sensitive assembly processes, confirm specific handling requirements with application documentation.
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