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L77DEG09STRM5 D-Sub 9-Position Receptacle Connector Equivalent & Substitute Parts
Part Overview
The L77DEG09STRM5 is a 9-position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This through-hole solder-terminated connector features female sockets with a vertical orientation and board-side M3 flange. The connector is classified as Active product status and is currently in stock with 980 pieces available.
D-Sub connectors of this configuration are widely used in industrial, telecommunications, and legacy computing applications. Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative compliance certifications are required, or when specific flange configurations or material compositions better suit application requirements.
Substiute Parts
Key Parameters
| Parameter | L77DEG09STRM5 Specification |
|---|---|
| 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 | Through Hole |
| Termination | Solder |
| Shell Material, Finish | Steel, Tin Plated |
| Contact Finish | Gold |
| Current Rating (Amps) | 7.5A |
| Voltage Rating | 300V |
| Operating Temperature | -55°C ~ 125°C |
| Material Flammability Rating | UL94 V-0 |
| RoHS Status | RoHS non-compliant |
Substitute Part Grouping Explanation
Substitution of D-Sub 9-position receptacle connectors is determined by strict equivalence across the following critical parameters:
Mandatory Equivalence Parameters:
- Connector style (D-Sub)
- Connector type (Receptacle, Female Sockets)
- Number of positions (9)
- Number of rows (2)
- Shell size and layout (1 / DE, E)
- Mounting type (Through Hole)
- Termination method (Solder)
- Material flammability rating (UL94 V-0)
Compatibility Considerations:
- Flange feature configuration (Board Side M3, Board Side 4-40, Housing/Shell Unthreaded, or Mating Side Female Screwlock)
- Shell material and finish composition
- Contact finish and material
- Current and voltage ratings
- Operating temperature range
- RoHS and REACH compliance status
Substitute parts are grouped into two categories: Direct Equivalents (matching all critical parameters including flange type and electrical ratings) and Functional Alternatives (meeting core connector specifications with variations in flange configuration, material composition, or compliance certifications).
Parameter Comparison
| Parameter | L77DEG09STRM5 (Amphenol ICC) | 09641127230 (HARTING) | 09641127235 (HARTING) | 09661116503 (HARTING) | 09661117503 (HARTING) | 09661556513 (HARTING) | 172-E09-213R011 (NorComp) | 172-E09-213R021 (NorComp) |
|---|---|---|---|---|---|---|---|---|
| Connector Style | D-Sub | D-Sub | D-Sub | D-Sub | D-Sub | D-Sub | D-Sub | D-Sub |
| Connector Type | Receptacle, Female Sockets | Receptacle, Female Sockets | 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 | 9 | 9 |
| Number of Rows | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Shell Size, Connector Layout | 1 (DE, E) | 1 (DE, E) | 1 (DE, E) | 1 (DE, E) | 1 (DE, E) | 1 (DE, E) | 1 (DE, E) | 1 (DE, E) |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Panel Mount, Through Hole | Panel Mount, Through Hole |
| Termination | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder |
| Flange Feature | Board Side (M3) | Housing/Shell (Unthreaded) | Board Side (4-40) | Mating Side, Female Screwlock (4-40) | Mating Side, Female Screwlock (4-40) | Mating Side, Female Screwlock (4-40) | Board Side (4-40) | Board Side (4-40) |
| Shell Material, Finish | Steel, Tin Plated | Steel | Steel, Tin Plated | Steel | Steel | Steel | Steel, Nickel Plated | Steel, Nickel Plated |
| Contact Finish | Gold | Not specified | Not specified | Not specified | Not specified | Gold | Gold | Gold |
| Contact Material | Brass | Copper Alloy | Copper Alloy | Copper Alloy | Copper Alloy | Copper Alloy | Brass | Brass |
| Current Rating (Amps) | 7.5A | 7.5A | 7.5A | 6.5A | 6.5A | 6.5A | 5A | 5A |
| Voltage Rating | 300V | 100V | 100V | Not specified | Not specified | Not specified | Not specified | Not specified |
| Operating Temperature | -55°C ~ 125°C | -20°C ~ 125°C | -20°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -50°C ~ 100°C | -50°C ~ 100°C |
| Material Flammability Rating | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Active | Active | Active | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
Direct Functional Equivalents (Highest Compatibility):
The HARTING 09641127235 connector provides the closest functional match to the L77DEG09STRM5. Both connectors feature 9-position D-Sub receptacle configuration with board-side flange mounting (4-40 specification), solder termination, steel tin-plated shell, and UL94 V-0 flammability rating. The 09641127235 is ROHS3 compliant and carries Active product status with 1362 pieces in stock. The primary differences are lower voltage rating (100V versus 300V) and reduced operating temperature minimum (-20°C versus -55°C).
Electrical Rating Considerations:
The L77DEG09STRM5 specifies 7.5A current capacity and 300V voltage rating. HARTING parts 09641127230 and 09641127235 maintain the 7.5A current rating but reduce voltage to 100V. HARTING parts 09661116503, 09661117503, and 09661556513 reduce current capacity to 6.5A. NorComp 172-E series connectors (172-E09-213R011 and 172-E09-213R021) further reduce current capacity to 5A. Selection of substitute parts with lower electrical ratings is permissible only when application requirements do not exceed the substitute part specifications.
Temperature Range Compatibility:
The L77DEG09STRM5 operates across -55°C to 125°C. HARTING parts 09661116503, 09661117503, and 09661556513 maintain this full temperature range. HARTING parts 09641127230 and 09641127235 operate only to -20°C minimum, restricting use in applications requiring extended low-temperature performance. NorComp 172-E series connectors operate to -50°C minimum and 100°C maximum, further limiting temperature range coverage.
Compliance and Material Composition:
The L77DEG09STRM5 is RoHS non-compliant. All listed substitute parts are ROHS3 compliant and REACH unaffected. Applications requiring RoHS non-compliant components must retain the L77DEG09STRM5. Applications permitting RoHS-compliant alternatives may select from the substitute list.
Flange Configuration Variations:
The L77DEG09STRM5 features board-side M3 flange mounting. Substitute parts offer alternative flange configurations: HARTING 09641127230 uses unthreaded housing/shell flange; HARTING 09641127235 uses board-side 4-40 flange; HARTING 09661116503, 09661117503, and 09661556513 use mating-side female screwlock 4-40 flange; NorComp 172-E09-213R011 and 172-E09-213R021 use board-side 4-40 flange. Flange configuration selection depends on mechanical mounting requirements and PCB design specifications.
Contact Material and Finish:
The L77DEG09STRM5 uses brass contacts with 8.00µin gold plating. HARTING parts 09641127230 and 09641127235 use copper alloy contacts with unspecified finish. HARTING parts 09661116503 and 09661117503 use copper alloy contacts with unspecified finish. HARTING 09661556513 uses copper alloy contacts with gold finish. NorComp 172-E series connectors use brass contacts with flash gold plating. Contact material and finish selection affects signal integrity, corrosion resistance, and long-term reliability in specific environmental conditions.
Frequently Asked Questions (FAQ)
Q: Can I substitute the L77DEG09STRM5 with a HARTING 09641127230 connector?
A: The 09641127230 is functionally compatible for applications not requiring the full 300V voltage rating or -55°C minimum operating temperature. Both connectors share identical 9-position D-Sub receptacle configuration, 7.5A current capacity, UL94 V-0 flammability rating, and solder termination. The 09641127230 differs in flange configuration (unthreaded housing versus M3 board-side), shell finish (steel only versus tin-plated steel), and voltage rating (100V versus 300V). Mechanical mounting compatibility must be verified against PCB design specifications.
Q: What is the difference between board-side and mating-side flange configurations?
A: Board-side flange mounting (M3 or 4-40) secures the connector to the printed circuit board through threaded holes or mounting posts on the connector shell. Mating-side female screwlock flange mounting secures the connector at the mating interface through threaded holes on the connector shell facing the mating connector. Selection depends on mechanical design requirements and available mounting space on the PCB or enclosure.
Q: Are NorComp 172-E09 connectors suitable replacements for the L77DEG09STRM5?
A: NorComp 172-E09-213R011 and 172-E09-213R021 connectors are functionally compatible for applications with reduced current capacity (5A versus 7.5A), reduced maximum operating temperature (100°C versus 125°C), and reduced minimum operating temperature (-50°C versus -55°C). Both NorComp connectors feature 9-position D-Sub receptacle configuration, board-side 4-40 flange mounting, solder termination, and UL94 V-0 flammability rating. These connectors are ROHS3 compliant and carry Active product status. Selection is appropriate only when application electrical and thermal requirements do not exceed NorComp specifications.
Q: What does RoHS compliance mean for connector selection?
A: RoHS (Restriction of Hazardous Substances) compliance restricts the use of specific hazardous materials including lead, cadmium, mercury, and hexavalent chromium. The L77DEG09STRM5 is RoHS non-compliant, indicating it may contain restricted substances. All listed substitute parts are ROHS3 compliant. Applications subject to RoHS regulations or customer requirements must use ROHS3-compliant connectors. Applications without RoHS requirements may use either compliant or non-compliant parts.
Q: How do contact material differences affect connector performance?
A: The L77DEG09STRM5 uses brass contacts with gold plating. Brass provides good electrical conductivity and corrosion resistance. Gold plating enhances contact reliability and signal integrity. HARTING substitute parts use copper alloy contacts, which provide comparable electrical conductivity but may exhibit different corrosion resistance characteristics depending on environmental exposure. Contact material and finish selection affects long-term reliability in high-humidity, corrosive, or high-frequency applications.
Q: Can I use a connector with lower current rating than the L77DEG09STRM5?
A: Substitution with lower current-rated connectors is permissible only when application current requirements do not exceed the substitute part rating. The L77DEG09STRM5 is rated for 7.5A. HARTING 09661116503, 09661117503, and 09661556513 are rated for 6.5A. NorComp 172-E series connectors are rated for 5A. Exceeding the connector current rating causes excessive heat generation, contact degradation, and potential connector failure. Application current requirements must be verified before selecting a lower-rated substitute.
Q: What is the significance of the operating temperature range?
A: Operating temperature range specifies the minimum and maximum ambient temperatures at which the connector maintains specified electrical and mechanical performance. The L77DEG09STRM5 operates from -55°C to 125°C. HARTING 09641127230 and 09641127235 operate from -20°C to 125°C, restricting use in applications requiring extended low-temperature performance such as aerospace, outdoor, or arctic environments. NorComp 172-E series connectors operate from -50°C to 100°C, further limiting both low and high temperature coverage. Application environmental requirements must be matched to connector temperature specifications.
Q: Are all substitute parts available in equivalent packaging quantities?
A: The L77DEG09STRM5 is packaged in trays with 980 pieces in stock. HARTING substitute parts are packaged in bulk with varying inventory levels: 09641127230 (1024 pieces), 09641127235 (1362 pieces), 09661116503 (992 pieces), 09661117503 (1148 pieces), and 09661556513 (1873 pieces). NorComp substitute parts are packaged in trays with varying inventory levels: 172-E09-213R011 (993 pieces) and 172-E09-213R021 (1803 pieces). Packaging format and quantity availability may affect procurement decisions and lead times.
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