Request Quote
(Ships tomorrow)
L77DFC37SOL2 Equivalent & Substitute Parts
Part Overview
The L77DFC37SOL2 is a 37-position D-Sub receptacle connector manufactured by Amphenol ICC, designed for panel mount, through-hole solder termination applications. This connector features female sockets in a 2-row configuration with shell size 4 (DC, C) layout. The part is currently active in production with 839 units in stock.
Substitute parts are necessary when the original Amphenol ICC component is unavailable, when alternative sourcing reduces lead times, or when design requirements permit functional equivalents from other manufacturers. TE Connectivity AMP Connectors offers multiple 37-position D-Sub receptacle alternatives within the AMPLIMITE HD-20 series that maintain electrical and mechanical compatibility for many applications.
Substiute Parts
Key Parameters
| Parameter | L77DFC37SOL2 (Main Part) |
|---|---|
| Connector Type | Receptacle, Female Sockets |
| Number of Positions | 37 |
| Number of Rows | 2 |
| Shell Size, Connector Layout | 4 (DC, C) |
| Mounting Type | Panel Mount, Through Hole |
| Termination | Solder |
| Shell Material, Finish | Steel, Tin Plated |
| Contact Finish | Gold |
| Contact Finish Thickness | 20.0µin (0.51µm) |
| Current Rating | 7.5A |
| Voltage Rating | 300V |
| Operating Temperature Range | -55°C to 125°C |
| Material Flammability Rating | UL94 V-0 |
| Contact Material | Copper Alloy |
| Dielectric Material | Thermoplastic, Glass Filled |
| RoHS Status | RoHS Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the L77DFC37SOL2 is determined by strict alignment of the following critical parameters:
Mandatory Matching Parameters:
- Connector Type: Receptacle, Female Sockets
- Number of Positions: 37
- Number of Rows: 2
- Shell Size, Connector Layout: 4 (DC, C)
- Termination: Solder
- Material Flammability Rating: UL94 V-0
- Moisture Sensitivity Level: 1 (Unlimited)
Allowable Variations:
- Mounting Type: The main part specifies Panel Mount, Through Hole. Substitute parts specify Through Hole only, which is compatible with panel mount applications.
- Flange Feature: Variations exist between Housing/Shell (Unthreaded), Housing/Shell (4-40), and Mating Side Female Screwlock (4-40). These represent different mechanical attachment methods but do not affect electrical compatibility.
- Contact Finish Thickness: Main part specifies 20.0µin (0.51µm); substitutes specify 30.0µin (0.76µm) or Flash. Higher thickness provides enhanced durability.
- Current Rating: Main part 7.5A; substitutes 6A. Substitutes have lower current capacity.
- Voltage Rating: Main part 300V; substitutes 125V. Substitutes have lower voltage capacity.
- Operating Temperature Range: Main part -55°C to 125°C; substitutes -55°C to 105°C. Substitutes have narrower upper temperature limit.
- Contact Material: Main part Copper Alloy; substitutes Phosphor Bronze. Both are acceptable contact materials.
- Dielectric Material: Main part Thermoplastic, Glass Filled; substitutes Polyester. Both meet UL94 V-0 rating.
All listed substitute parts are TE Connectivity AMP Connectors from the AMPLIMITE HD-20 series and maintain the core 37-position D-Sub receptacle configuration.
Parameter Comparison
| Parameter | L77DFC37SOL2 | 1-5747301-4 | 1-5747301-6 | 5207829-4 | 5745059-4 | 5745079-4 | 5745079-6 | 5747301-2 | 5747301-7 | 5747301-8 | 5787685-1 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Amphenol ICC | TE Connectivity | TE Connectivity | TE Connectivity | TE Connectivity | TE Connectivity | TE Connectivity | TE Connectivity | TE Connectivity | TE Connectivity | TE Connectivity |
| Series | DF | AMPLIMITE HD-20 | AMPLIMITE HD-20 | AMPLIMITE HD-20 | AMPLIMITE HD-20 | AMPLIMITE HD-20 | AMPLIMITE HD-20 | AMPLIMITE HD-20 | AMPLIMITE HD-20 | AMPLIMITE HD-20 | AMPLIMITE HD-20 |
| 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 | Receptacle, Female Sockets | Receptacle, Female Sockets | Receptacle, Female Sockets |
| 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 | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
| Termination | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder |
| Contact Finish | Gold | Gold | Gold | Gold | Gold | Gold | Gold | Gold | Gold | Gold | Gold |
| Contact Finish Thickness | 20.0µin (0.51µm) | 30.0µin (0.76µm) | 30.0µin (0.76µm) | 30.0µin (0.76µm) | 30.0µin (0.76µm) | 30.0µin (0.76µm) | 30.0µin (0.76µm) | 30.0µin (0.76µm) | Flash | 30.0µin (0.76µm) | 30.0µin (0.76µm) |
| Current Rating (Amps) | 7.5A | 6A | 6A | 6A | 6A | 6A | 6A | 6A | 6A | 6A | 6A |
| Voltage Rating | 300V | 125V | 125V | 125V | 125V | 125V | 125V | 125V | 125V | 125V | 125V |
| Operating Temperature Range | -55°C to 125°C | -55°C to 105°C | -55°C to 105°C | -55°C to 105°C | -55°C to 105°C | -55°C to 105°C | -55°C to 105°C | -55°C to 105°C | -55°C to 105°C | -55°C to 105°C | -55°C to 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 |
| Contact Material | Copper Alloy | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze | Phosphor Bronze |
| Dielectric Material | Thermoplastic, Glass Filled | Polyester | Polyester | Polyester | Polyester | Polyester | Polyester | Polyester | Polyester | Polyester | Polyester |
| RoHS Status | RoHS Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | RoHS Compliant | ROHS3 Compliant | RoHS Compliant | RoHS Compliant | ROHS3 Compliant | RoHS Compliant | RoHS Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| Inventory Status | 839 Pcs New Original | 3446 Pcs New Original | 1029 Pcs New Original | 756 Pcs New Original | 2769 Pcs New Original | 1481 Pcs New Original | 3603 Pcs New Original | 1660 Pcs New Original | 3673 Pcs New Original | 32900 Pcs New Original | 1189 Pcs New Original |
Engineering Selection Recommendations
All listed substitute parts maintain active product status and meet the core electrical and mechanical requirements for 37-position D-Sub receptacle applications. Selection among substitutes should be based on the following criteria:
Compliance and Regulatory Status: All substitute parts are RoHS compliant or ROHS3 compliant. Parts with ROHS3 designation (1-5747301-4, 1-5747301-6, 5745079-4, 5747301-7) represent the most current regulatory compliance standard. Parts with RoHS Compliant designation (5745059-4, 5745079-6, 5747301-2, 5747301-8, 5787685-1) also meet regulatory requirements.
REACH Status Considerations: Parts designated as REACH Affected (5745059-4, 5745079-4, 5745079-6, 5747301-8, 5787685-1) require additional documentation for European Union applications. Parts with Vendor Undefined or REACH Unaffected status (1-5747301-4, 1-5747301-6, 5207829-4, 5747301-2) may have simpler supply chain documentation.
Electrical Performance Limitations: Substitute parts operate at 125V maximum versus the main part's 300V rating and carry 6A maximum versus the main part's 7.5A rating. Applications requiring the full 300V or 7.5A specifications cannot use these substitutes.
Temperature Operating Range: Substitute parts operate to 105°C maximum versus the main part's 125°C. Applications requiring operation above 105°C cannot use these substitutes.
Inventory Availability: Part 5747301-8 offers the highest inventory level at 32,900 units. Parts 1-5747301-4 and 5745079-6 offer 3,446 and 3,603 units respectively, providing strong availability for high-volume requirements.
Mechanical Attachment Variations: Flange feature differences determine mounting method. Housing/Shell (Unthreaded) variants (5207829-4, 5747301-2) provide simple press-fit mounting. Housing/Shell (4-40) variants (5745059-4, 5747301-7, 5747301-8) provide threaded mounting. Mating Side Female Screwlock (4-40) variants (1-5747301-4, 1-5747301-6, 5745079-4, 5745079-6, 5787685-1) provide screwlock mating interface. Select based on specific panel mount requirements.
Frequently Asked Questions (FAQ)
Q: Can TE Connectivity AMPLIMITE HD-20 series parts directly replace the Amphenol ICC L77DFC37SOL2?
A: Direct replacement is possible only when application requirements do not exceed the electrical and thermal limitations of the substitute parts. The substitute parts operate at 125V maximum and 6A maximum, compared to the main part's 300V and 7.5A ratings. The substitute parts also operate to 105°C maximum versus the main part's 125°C. If your application operates within these reduced specifications, substitution is electrically and mechanically compatible.
Q: What is the difference between the various flange features on the substitute parts?
A: Flange features determine the mechanical mounting method. Housing/Shell (Unthreaded) provides simple press-fit installation into a panel cutout. Housing/Shell (4-40) provides threaded mounting holes for screw fastening. Mating Side Female Screwlock (4-40) provides a screwlock interface on the mating connector side. Select the flange feature that matches your panel mount hardware and installation method.
Q: Are all substitute parts RoHS compliant?
A: Yes. All listed substitute parts are either RoHS Compliant or ROHS3 Compliant. ROHS3 represents the current regulatory standard. Both designations satisfy RoHS requirements for European Union and other regulated markets.
Q: What is the significance of contact finish thickness differences?
A: The main part specifies 20.0µin (0.51µm) gold plating. Substitute parts specify either 30.0µin (0.76µm) or Flash thickness. Higher thickness provides enhanced durability and corrosion resistance during repeated mating cycles. Flash thickness provides minimal plating for cost reduction. All thicknesses are acceptable for signal-level applications.
Q: Can I use a substitute part with 125V rating in a 300V application?
A: No. The substitute parts are rated for 125V maximum. Using them in a 300V application exceeds the dielectric breakdown rating and creates a safety hazard. The main part L77DFC37SOL2 must be used for 300V applications.
Q: What does REACH Affected status mean for substitute parts?
A: REACH Affected status indicates that the part contains substances of concern under the European Union REACH regulation. Parts with this designation require additional documentation and compliance verification for supply into the European Union. Parts with Vendor Undefined or REACH Unaffected status do not carry this requirement.
Q: Are the contact materials interchangeable between Copper Alloy and Phosphor Bronze?
A: Yes. Both Copper Alloy (main part) and Phosphor Bronze (substitute parts) are acceptable contact materials for D-Sub connectors. Phosphor Bronze offers slightly different mechanical properties and wear characteristics but maintains electrical compatibility and signal integrity for standard applications.
Q: Which substitute part offers the best inventory availability?
A: Part 5747301-8 offers 32,900 units in stock, providing the highest availability. Parts 1-5747301-4 (3,446 units) and 5745079-6 (3,603 units) also provide strong inventory levels for high-volume requirements.
Q: Can I use a substitute part rated for -55°C to 105°C in an application requiring -55°C to 125°C operation?
A: No. The substitute parts are rated for 105°C maximum continuous operation. Using them above this temperature exceeds the dielectric material rating and may cause connector failure. The main part L77DFC37SOL2 must be used for applications requiring operation to 125°C.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts