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L77DFC37POL2 D-Sub Plug 37-Position Equivalent & Substitute Parts
Part Overview
The Amphenol ICC L77DFC37POL2 is a 37-position D-Sub plug connector with panel mount, through-hole solder termination. The connector features a 4-shell size (DC, C) configuration with male pins, steel tin-plated housing, and gold-plated brass contacts. This Active product is in stock with 1,033 units available.
Substitute parts are necessary when the original part is unavailable, when specific flange features or mounting configurations are required for board-level integration, or when compliance with updated regulatory standards is required.
Substiute Parts
Key Parameters
| Parameter | L77DFC37POL2 (Amphenol ICC) |
|---|---|
| Connector Type | Plug, Male Pins |
| Number of Positions | 37 |
| Number of Rows | 2 |
| Shell Size, Connector Layout | 4 (DC, C) |
| Mounting Type | Panel Mount, Through Hole |
| Flange Feature | Housing/Shell (Unthreaded) |
| Termination | Solder |
| Shell Material, Finish | Steel, Tin Plated |
| Contact Finish | Gold |
| Contact Material | Brass |
| Current Rating (Amps) | 7.5A |
| Voltage Rating | 300V |
| Operating Temperature Range | -55°C ~ 155°C |
| Material Flammability Rating | UL94 V-0 |
| RoHS Status | RoHS Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts are grouped based on compatibility across electrical and mechanical parameters. The critical substitution criteria for the L77DFC37POL2 are:
Critical Parameters (Must Match or Exceed):
- Connector Type: Plug, Male Pins
- Number of Positions: 37
- Number of Rows: 2
- Shell Size, Connector Layout: 4 (DC, C)
- Contact Material: Brass
- Termination: Solder
- Material Flammability Rating: UL94 V-0
Parameters with Allowable Variation:
- Mounting Type: Panel Mount, Through Hole variants acceptable
- Flange Feature: Housing/Shell (Unthreaded), Board Side (4-40), or Mating Side Screwlock configurations
- Shell Material Finish: Steel with Tin or Nickel plating
- Operating Temperature Range: -55°C to -50°C minimum acceptable
- Current Rating: 5A to 7.5A range acceptable for signal-level applications
- Voltage Rating: 125V to 300V acceptable for signal circuits
- RoHS Status: Both RoHS Compliant and ROHS3 Compliant acceptable
The substitute parts listed maintain core 37-position D-Sub plug architecture across manufacturers (NorComp Inc. and TE Connectivity AMP Connectors) with variations in flange mounting configurations and temperature operating ranges.
Parameter Comparison
| Parameter | L77DFC37POL2 (Amphenol ICC) |
172-E37-113R001 (NorComp) |
172-E37-113R011 (NorComp) |
172-E37-113R911 (NorComp) |
2-5747705-1 (TE Conn) |
208009-1 (TE Conn) |
5208009-1 (TE Conn) |
5745074-1 (TE Conn) |
5745074-2 (TE Conn) |
5745074-4 (TE Conn) |
5747375-2 (TE Conn) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Connector Type | Plug, Male Pins | Plug, Male Pins | Plug, Male Pins | Plug, Male Pins | Plug, Male Pins | Plug, Male Pins | Plug, Male Pins | Plug, Male Pins | Plug, Male Pins | Plug, Male Pins | Plug, Male Pins |
| Number of Positions | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 | 37 |
| Number of Rows | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Shell Size, Connector Layout | 4 (DC, C) | 4 (DC, C) | 4 (DC, C) | 4 (DC, C) | 4 (DC, C) | 4 (DC, C) | 4 (DC, C) | 4 (DC, C) | 4 (DC, C) | 4 (DC, C) | 4 (DC, C) |
| Mounting Type | Panel Mount, Through Hole | Panel Mount, Through Hole | Panel Mount, Through Hole | Panel Mount, Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
| Flange Feature | Housing/Shell (Unthreaded) | Housing/Shell (Unthreaded) | Board Side (4-40) | Board Side (4-40), Mating Side Female Screwlock (4-40) | Mating Side, Female Screwlock (4-40) | Housing/Shell (Unthreaded) | Housing/Shell (Unthreaded) | Mating Side, Female Screwlock (4-40) | Mating Side, Female Screwlock (4-40) | Mating Side, Female Screwlock (4-40) | Housing/Shell (Unthreaded) |
| Termination | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder |
| Shell Material, Finish | Steel, Tin Plated | Steel, Nickel Plated | Steel, Nickel Plated | Steel, Nickel Plated | Steel, Tin Plated | Not specified | Not specified | Not specified | Not specified | Not specified | Steel, Tin Plated |
| Contact Finish | Gold | Gold | Gold | Gold | Gold | Gold | Gold | Gold | Gold | Gold | Gold |
| Contact Material | Brass | Brass | Brass | Brass | Brass | Brass | Brass | Brass | Brass | Brass | Brass |
| Current Rating (Amps) | 7.5A | 5A | 5A | 5A | 6A | 6A | 6A | 6A | 6A | 6A | 6A |
| Voltage Rating | 300V | Not specified | Not specified | Not specified | 125V | 125V | 125V | 125V | 125V | 125V | 125V |
| Operating Temperature Range | -55°C ~ 155°C | -50°C ~ 100°C | -50°C ~ 100°C | -50°C ~ 100°C | -55°C ~ 105°C | -55°C ~ 105°C | -55°C ~ 105°C | -55°C ~ 105°C | -55°C ~ 105°C | -55°C ~ 105°C | -55°C ~ 105°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 | UL94 V-0 | UL94 V-0 | UL94 V-0 |
| RoHS Status | RoHS Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | RoHS non-compliant | ROHS3 Compliant | RoHS Compliant | RoHS Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | Not Applicable | Not Applicable | Not Applicable | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
Amphenol ICC L77DFC37POL2 Characteristics: The L77DFC37POL2 is RoHS Compliant with a 300V voltage rating and 7.5A current capacity. Operating temperature range extends to 155°C maximum. MSL rating of 1 (Unlimited) indicates no moisture-sensitive component handling required.
NorComp Inc. 172-E Series (172-E37-113R001, 172-E37-113R011, 172-E37-113R911): All three NorComp variants are ROHS3 Compliant with MSL Not Applicable. Operating temperature range is limited to -50°C ~ 100°C maximum. Current rating is 5A. Voltage rating is not specified. These parts feature nickel-plated steel housing. The 172-E37-113R011 variant includes Board Side (4-40) flange mounting, and the 172-E37-113R911 variant includes both Board Side and Mating Side Screwlock features with Board Lock capability.
TE Connectivity AMPLIMITE HDP-20 Series (2-5747705-1): Part 2-5747705-1 is ROHS3 Compliant with 6A current capacity and 125V voltage rating. Operating temperature range is -55°C ~ 105°C. Includes Mating Side Female Screwlock (4-40) flange feature.
TE Connectivity AMPLIMITE HD-20 Series (208009-1, 5208009-1, 5745074-1, 5745074-2, 5745074-4, 5747375-2): Part 208009-1 is RoHS non-compliant and REACH Affected; not recommended for new designs. Part 5208009-1 is ROHS3 Compliant and REACH Unaffected, providing equivalent performance to 208009-1 with updated compliance. Parts 5745074-1, 5745074-2, and 5745074-4 are RoHS Compliant or ROHS3 Compliant with 6A current capacity and 125V voltage rating. Part 5745074-2 lacks specified Connector Style but matches all other critical parameters. Parts 5745074-1 and 5745074-4 feature Mating Side Female Screwlock (4-40) flange mounting. Part 5745074-2 also includes Mating Side Female Screwlock (4-40) configuration. Part 5747375-2 is ROHS3 Compliant, features Housing/Shell (Unthreaded) mounting identical to the L77DFC37POL2, and includes Grounding Indents.
Recommended Selection Logic:
- For applications requiring the extended temperature range (-55°C to 155°C) of the L77DFC37POL2, the original part or 5747375-2 are the only suitable options.
- For applications with temperature range limited to -55°C ~ 105°C and requiring board-level integration with screwlock features, select from TE Connectivity AMPLIMITE HD-20 variants (5745074-1, 5745074-2, 5745074-4).
- For panel mount applications without flange requirements, select from NorComp 172-E37-113R001 or TE variants with Housing/Shell (Unthreaded) feature (208009-1, 5208009-1, 5747375-2).
- For applications requiring REACH compliance and updated RoHS3 certification, eliminate part 208009-1 and select 5208009-1 as the compliant equivalent.
Frequently Asked Questions (FAQ)
Q: Can I use a NorComp 172-E37 series part as a direct replacement for the L77DFC37POL2?
A: NorComp 172-E37-113R001 is mechanically and electrically compatible for applications where current draw does not exceed 5A and operating temperature does not exceed 100°C. The 172-E37-113R011 and 172-E37-113R911 variants feature board-mounted flange configurations (4-40), which differ from the L77DFC37POL2 panel mount Housing/Shell (Unthreaded) design and require different PCB mounting hole patterns. Nickel plating on NorComp parts differs from the tin plating on the original part.
Q: What is the voltage difference between the L77DFC37POL2 (300V) and TE Connectivity parts (125V)?
A: The L77DFC37POL2 is rated for 300V, while most TE Connectivity AMPLIMITE variants are rated for 125V. This is a significant difference for high-voltage signal or power distribution applications. Select the 300V-rated L77DFC37POL2 for applications exceeding 125V. The original Amphenol part is the only substitute option listed that maintains the 300V rating.
Q: Which substitute part has the lowest operating temperature minimum rating?
A: The L77DFC37POL2, TE Connectivity 2-5747705-1, 208009-1, 5208009-1, 5745074-1, 5745074-2, 5745074-4, and 5747375-2 all maintain -55°C minimum operating temperature. NorComp 172-E series variants are limited to -50°C minimum. Selecting between these two thermal ranges depends on application cold-soak requirements.
Q: Are there RoHS and REACH compliance considerations when selecting a substitute?
A: The L77DFC37POL2 is RoHS Compliant. NorComp parts are ROHS3 Compliant. TE Connectivity parts vary: 208009-1 and 5745074-1 are not ROHS3 Compliant or are REACH Affected and should not be selected for new designs. Part 5208009-1 is ROHS3 Compliant and REACH Unaffected, serving as the updated equivalent to 208009-1. Parts 5745074-2 and 5747375-2 are ROHS3 Compliant and REACH status varies (Affected or Vendor Undefined).
Q: What flange mounting options are available across the substitute parts?
A: The L77DFC37POL2 features Housing/Shell (Unthreaded) panel mounting. NorComp 172-E37-113R001 matches this configuration. NorComp 172-E37-113R011 and 172-E37-113R911 provide Board Side (4-40) flange mounting with 172-E37-113R911 adding Mating Side Female Screwlock (4-40) and Board Lock features. TE Connectivity parts offer Housing/Shell (Unthreaded) variants (208009-1, 5208009-1, 5747375-2) or Mating Side Female Screwlock (4-40) variants (2-5747705-1, 5745074-1, 5745074-2, 5745074-4). Select the flange configuration matching your mechanical integration requirements.
Q: Can I use a part with a lower current rating (5A or 6A) if the L77DFC37POL2 is rated for 7.5A?
A: Current rating selection depends on actual circuit requirements. If the application circuit draws 6A or less, substitute parts with 6A ratings are acceptable. NorComp parts with 5A ratings are suitable only for applications not exceeding 5A. Verify your circuit's maximum current draw before selecting a lower-rated part.
Q: What is the difference between the NorComp part dielectric material (Polyamide PA6T, Nylon 6T) and the Amphenol part (Thermoplastic, Glass Filled)?
A: The materials differ in composition and thermal properties. The Amphenol L77DFC37POL2 uses glass-filled thermoplastic, supporting the extended temperature range to 155°C. NorComp parts use Polyamide (PA6T), Nylon 6T, which operates only to 100°C maximum. Material selection is constrained by thermal requirements; select NorComp parts only if temperature range compatibility is confirmed for your application.
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