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Equivalent & Substitute Parts for L77DFEH09STRM5
Part Overview
The L77DFEH09STRM5 is a 9-position D-Sub receptacle connector manufactured by Amphenol ICC, designed for panel mount, through-hole solder applications. This connector features female sockets with a board-side flange (4-40), gold-plated contacts, and operates across an extended temperature range of -55°C to 155°C. The part is RoHS compliant and currently active in production with 666 units in stock.
Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part's specifications, enabling direct replacement in applications where the connector must maintain the same form factor, contact configuration, and performance characteristics.
Substiute Parts
Key Parameters
| Parameter | L77DFEH09STRM5 Value |
|---|---|
| Connector Type | Receptacle, Female Sockets |
| Number of Positions | 9 |
| Shell Size / Layout | 1 (DE, E) |
| Mounting Type | Panel Mount, Through Hole |
| Flange Feature | Board Side (4-40) |
| Termination | Solder |
| Current Rating | 7.5A |
| Voltage Rating | 300V |
| Operating Temperature Range | -55°C to 155°C |
| Contact Finish | Gold (20.0µin / 0.51µm) |
| Shell Material | Steel, Tin Plated |
| RoHS Status | RoHS Compliant |
Substitute Part Grouping Explanation
Substitution eligibility is determined by strict alignment of the following critical parameters:
Primary Matching Criteria:
- Connector type: Receptacle, Female Sockets
- Number of positions: 9
- Shell size and layout: 1 (DE, E)
- Termination method: Solder
- Flange feature: Board Side (4-40)
Secondary Compatibility Factors:
- Current rating: Equal to or greater than 7.5A
- Voltage rating: Equal to or greater than 300V
- Operating temperature range: Must encompass -55°C to 155°C or be compatible with application requirements
- Contact finish: Gold plating preferred for signal integrity
- RoHS compliance status
Substitute parts listed below meet the primary matching criteria. Variations in secondary parameters are noted in the comparison table and must be evaluated against specific application requirements.
Parameter Comparison
| Part Number | Manufacturer | Positions | Mounting Type | Flange Feature | Current Rating (A) | Voltage Rating (V) | Temp Range (°C) | Contact Finish | Shell Material | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|
| L77DFEH09STRM5 | Amphenol ICC | 9 | Panel Mount, Through Hole | Board Side (4-40) | 7.5 | 300 | -55 to 155 | Gold (20.0µin) | Steel, Tin Plated | RoHS Compliant |
| 09641127235 | HARTING | 9 | Through Hole | Board Side (4-40) | 7.5 | 100 | -20 to 125 | Not Specified | Steel, Tin Plated | ROHS3 Compliant |
| 09641127230 | HARTING | 9 | Through Hole | Housing/Shell (Unthreaded) | 7.5 | 100 | -20 to 125 | Not Specified | Steel | ROHS3 Compliant |
| 09661116503 | HARTING | 9 | Through Hole | Mating Side, Female Screwlock (4-40) | 6.5 | Not Specified | -55 to 125 | Not Specified | Steel | ROHS3 Compliant |
| 09661117503 | HARTING | 9 | Through Hole | Mating Side, Female Screwlock (4-40) | 6.5 | Not Specified | -55 to 125 | Not Specified | Steel | ROHS3 Compliant |
| 09661556513 | HARTING | 9 | Through Hole | Mating Side, Female Screwlock (4-40) | 6.5 | Not Specified | -55 to 125 | Gold | Steel | ROHS3 Compliant |
| 1-5747150-3 | TE Connectivity AMP Connectors | 9 | Through Hole | Mating Side, Female Screwlock (4-40) | 6 | 125 | -55 to 105 | Gold (Flash) | Steel, Tin Plated | ROHS3 Compliant |
| 1-5747150-4 | TE Connectivity AMP Connectors | 9 | Through Hole | Mating Side, Female Screwlock (4-40) | 6 | 125 | -55 to 105 | Gold (30.0µin) | Steel, Tin Plated | RoHS Compliant |
| 1-5747150-6 | TE Connectivity AMP Connectors | 9 | Through Hole | Mating Side, Female Screwlock (4-40) | 6 | 125 | -55 to 105 | Gold (30.0µin) | Steel, Tin Plated | RoHS Compliant |
| 1-747150-4 | TE Connectivity AMP Connectors | 9 | Through Hole | Mating Side, Female Screwlock (4-40) | 6 | 125 | -55 to 105 | Gold (30.0µin) | Steel, Tin Plated | RoHS non-compliant |
| 191-009-213L571 | NorComp Inc. | 9 | Panel Mount, Through Hole | Mating Side, Female Screwlock (4-40) | 5 | Not Specified | -55 to 125 | Gold (Flash) | Steel, Nickel Plated | ROHS3 Compliant |
Engineering Selection Recommendations
Closest Functional Equivalents:
The HARTING 09641127235 maintains the highest parameter alignment with the L77DFEH09STRM5, matching the board-side flange (4-40) configuration, 7.5A current rating, and solder termination. Both parts are RoHS compliant. However, the HARTING part operates at a reduced voltage rating (100V versus 300V) and narrower temperature range (-20°C to 125°C versus -55°C to 155°C). This part is suitable for applications where the lower electrical and thermal specifications are acceptable.
Alternative Configurations:
TE Connectivity AMPLIMITE HD-20 series parts (1-5747150-3, 1-5747150-4, 1-5747150-6) feature mating-side female screwlock flanges rather than board-side flanges. These parts provide gold-plated contacts and steel tin-plated shells with RoHS compliance. Current ratings are reduced to 6A, and voltage ratings are 125V. Operating temperature range extends to -55°C but is limited to 105°C maximum. These parts are suitable for applications requiring mating-side connector security.
Panel Mount Alternatives:
NorComp 191-009-213L571 provides panel mount capability matching the L77DFEH09STRM5 form factor. This part features gold-plated contacts, nickel-plated steel shell, and ROHS3 compliance. Current rating is reduced to 5A, and voltage rating is not specified. Operating temperature range is -55°C to 125°C. This part includes board lock and shielding features.
RoHS Compliance Consideration:
Part 1-747150-4 is RoHS non-compliant and REACH affected. This part should be selected only when legacy system compatibility or specific regulatory exemptions apply.
Frequently Asked Questions (FAQ)
Q: Can the HARTING 09641127235 directly replace the L77DFEH09STRM5 in all applications?
A: The HARTING 09641127235 shares the same 9-position configuration, board-side flange (4-40), 7.5A current rating, and solder termination. However, it operates at 100V maximum versus 300V for the Amphenol part, and its temperature range is -20°C to 125°C versus -55°C to 155°C. Direct replacement is valid only for applications operating within these reduced electrical and thermal specifications.
Q: What is the primary difference between board-side and mating-side flange configurations?
A: Board-side flanges (4-40) mount the connector to the circuit board with fasteners on the board surface. Mating-side female screwlock flanges secure the connector at the mating interface. These configurations are not interchangeable; selection depends on the mechanical mounting requirements of the application.
Q: Are TE Connectivity AMPLIMITE HD-20 series parts suitable replacements?
A: TE Connectivity parts in the AMPLIMITE HD-20 series (1-5747150-3, 1-5747150-4, 1-5747150-6) maintain the 9-position D-Sub configuration and solder termination. However, they feature mating-side female screwlock flanges rather than board-side flanges, reducing current rating to 6A, voltage rating to 125V, and maximum operating temperature to 105°C. These parts are suitable only for applications where the flange configuration change and reduced electrical specifications are acceptable.
Q: What does "Contact Finish Thickness" indicate, and why does it matter?
A: Contact finish thickness specifies the plating layer depth in microinches (µin) or micrometers (µm). The L77DFEH09STRM5 specifies 20.0µin (0.51µm) gold plating. Thicker plating (such as 30.0µin on some TE Connectivity parts) provides enhanced durability and corrosion resistance. Thinner or unspecified plating may be acceptable for lower-stress applications but offers reduced contact longevity.
Q: Is the NorComp 191-009-213L571 a direct replacement?
A: The NorComp part maintains panel mount capability and 9-position configuration but features a mating-side female screwlock flange instead of board-side mounting. Current rating is reduced to 5A, and voltage rating is not specified. This part includes board lock and shielding features not present in the Amphenol part. Selection requires confirmation that the flange configuration change and reduced current rating are compatible with the application.
Q: What is the significance of RoHS compliance status differences?
A: RoHS Compliant and ROHS3 Compliant parts meet current lead-free soldering requirements. Part 1-747150-4 is RoHS non-compliant, indicating it may contain restricted substances. Selection of non-compliant parts is restricted to applications with specific regulatory exemptions or legacy system requirements.
Q: Can substitute parts with lower current ratings be used in high-current applications?
A: No. Current rating specifies the maximum continuous current the connector contacts can safely carry without excessive heating. Using a connector with a lower current rating than required creates risk of contact degradation, increased resistance, and potential failure. Application current requirements must not exceed the connector's rated current.
Q: How do operating temperature ranges affect part selection?
A: The L77DFEH09STRM5 operates from -55°C to 155°C. Substitute parts with narrower ranges (such as -20°C to 125°C for HARTING parts) are suitable only for applications operating within those limits. Applications requiring the full -55°C to 155°C range must use parts with equivalent or broader temperature specifications.
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