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L77SDCG37SOL2: Equivalent & Substitute Parts Reference
Part Overview
The L77SDCG37SOL2 is a 37-position D-Sub receptacle connector manufactured by Amphenol ICC, featuring female sockets with vertical through-hole solder termination. This connector is active in production and widely used in applications requiring robust signal transmission with a 3A current capacity and 250V voltage rating. Substitute parts are necessary to address supply chain variations, inventory availability, different flange configurations, or to leverage alternative manufacturers in the AMPLIMITE HD-20 series with enhanced current ratings and compliance certifications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Connector Type | Receptacle, Female Sockets |
| Number of Positions | 37 |
| Number of Rows | 2 |
| Shell Size/Layout | 4 (DC, C) |
| Mounting Type | Through Hole |
| Termination | Solder |
| Shell Material/Finish | Steel, Tin Plated |
| Contact Finish | Gold |
| Dielectric Material | Thermoplastic, Glass Filled |
| Flammability Rating | UL94 V-0 |
| Operating Temperature Range | -55°C ~ 125°C |
| RoHS Status | RoHS Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the L77SDCG37SOL2 are qualified based on the following matching criteria:
Core Substitution Parameters (Must Match):
- Connector Type: Receptacle, Female Sockets
- Number of Positions: 37
- Number of Rows: 2
- Shell Size/Layout: 4 (DC, C)
- Mounting Type: Through Hole
- Termination: Solder
- Contact Finish: Gold
- Contact Material: Phosphor Bronze
- Flammability Rating: UL94 V-0
- Moisture Sensitivity Level: 1 (Unlimited)
- Color: Black
Variable Parameters Allowing Substitution:
- Manufacturer: Amphenol ICC to TE Connectivity AMP Connectors
- Series: SD to AMPLIMITE HD-20
- Flange Feature: Board Side (M3) to Mating Side Female Screwlock (4-40), Housing/Shell (4-40), or Housing/Shell (Unthreaded)
- Shell Material Finish: Steel, Tin Plated or unspecified finish
- Contact Finish Thickness: Flash or 30.0µin (0.76µm)
- Current Rating: 3A to 6A
- Voltage Rating: 250V to 125V
- Dielectric Material: Thermoplastic, Glass Filled to Polyester
- Operating Temperature: -55°C ~ 125°C to -55°C ~ 105°C
- Packaging: Tray to Tube
- RoHS/REACH Compliance variants
All substitute parts maintain the same 37-position D-Sub receptacle functionality with through-hole solder termination and support the signal transmission requirements of the original component.
Parameter Comparison
| Parameter | L77SDCG37SOL2 (Main) | 1-5747301-4 | 1-5747301-6 | 2-5747709-0 | 5745059-4 | 5745079-4 | 5745079-6 | 5747301-2 | 5747301-7 | 5747301-8 | 5787685-1 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Amphenol ICC | TE Connectivity AMP | TE Connectivity AMP | TE Connectivity AMP | TE Connectivity AMP | TE Connectivity AMP | TE Connectivity AMP | TE Connectivity AMP | TE Connectivity AMP | TE Connectivity AMP | TE Connectivity AMP |
| Series | SD | 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/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 | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
| Flange Feature | Board Side (M3) | Mating Side, Female Screwlock (4-40) | Mating Side, Female Screwlock (4-40) | Housing/Shell (4-40) | Housing/Shell (4-40) | Mating Side, Female Screwlock (4-40) | Mating Side, Female Screwlock (4-40) | Housing/Shell (Unthreaded) | Housing/Shell (4-40) | Housing/Shell (4-40) | Mating Side, Female Screwlock (4-40) |
| Termination | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder |
| Shell Material/Finish | Steel, Tin Plated | Steel, Tin Plated | Steel, Tin Plated | Steel, Tin Plated | Not Specified | Not Specified | Not Specified | Steel, Tin Plated | Steel, Tin Plated | Steel, Tin Plated | Steel, Tin Plated |
| Contact Finish | Gold | Gold | Gold | Gold | Gold | Gold | Gold | Gold | Gold | Gold | Gold |
| Contact Finish Thickness | Flash | 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) |
| 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 |
| Current Rating (Amps) | 3A | 6A | 6A | 6A | 6A | 6A | 6A | 6A | 6A | 6A | 6A |
| Voltage Rating | 250V | 125V | 125V | 125V | 125V | 125V | 125V | 125V | 125V | 125V | 125V |
| Dielectric Material | Thermoplastic, Glass Filled | Polyester | Polyester | Polyester | Polyester | Polyester | Polyester | Polyester | Polyester | Polyester | Polyester |
| Operating Temperature Range | -55°C ~ 125°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 | -55°C ~ 105°C | -55°C ~ 105°C | -55°C ~ 105°C |
| Color | Black | Black | Black | Black | Black | Black | Black | Black | Black | Black | Black |
| RoHS Status | RoHS Compliant | ROHS3 Compliant | ROHS3 Compliant | RoHS 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) |
| Packaging | Tray | Tube | Tube | Tube | Tube | Tube | Tube | Tube | Tube | Tube | Tube |
| Inventory Status | 829 Pcs New Original In Stock | 3446 Pcs New Original In Stock | 1029 Pcs New Original In Stock | 1537 Pcs New Original In Stock | 2769 Pcs New Original In Stock | 1481 Pcs New Original In Stock | 3603 Pcs New Original In Stock | 1660 Pcs New Original In Stock | 3673 Pcs New Original In Stock | 32900 Pcs New Original In Stock | 1189 Pcs New Original In Stock |
Engineering Selection Recommendations
All substitute parts listed above are active in production with UL94 V-0 flammability certification and unlimited moisture sensitivity, matching core application requirements. The following considerations apply based on provided compliance and product data:
Highest Compatibility: 5747301-8 offers the largest inventory (32,900 units), full RoHS compliance, and Housing/Shell (4-40) flange configuration with 6A current rating and Steel Tin Plated finish identical to critical specifications of the L77SDCG37SOL2.
Alternative Configurations: Parts with Mating Side Female Screwlock (4-40) flanges (1-5747301-4, 1-5747301-6, 5745079-4, 5745079-6, 5787685-1) support direct component mating and locking mechanisms. Part 5787685-1 adds Board Lock feature.
Board-Side Mounting Alternative: 5747301-2 with Housing/Shell (Unthreaded) flange provides simplified board-side integration where threaded assembly is not required.
Compliance Variants: Parts with ROHS3 compliance (1-5747301-4, 1-5747301-6, 5745079-4, 5747301-7) meet enhanced regulatory requirements. Parts with REACH Affected status (2-5747709-0, 5745059-4, 5745079-4, 5745079-6, 5747301-7, 5747301-8, 5787685-1) require REACH substance notification for certain regulated materials.
Electrical Performance: All substitutes operate at 6A current rating, exceeding the 3A specification of the L77SDCG37SOL2. Applications limited to 125V operation (compared to 250V original) should assess voltage requirements; substitutes are suitable for standard signal transmission circuits within 125V specifications.
Thermal Operating Range: L77SDCG37SOL2 supports -55°C ~ 125°C while substitutes operate to -55°C ~ 105°C. High-temperature applications requiring operation above 105°C require the original part.
Frequently Asked Questions (FAQ)
Q: Can I directly substitute 5747301-8 for L77SDCG37SOL2 in my PCB assembly?
A: Yes, provided your design accommodates the Housing/Shell (4-40) flange mounting configuration and operates within 125V and -55°C ~ 105°C specifications. The 37-position, 2-row through-hole solder termination and signal contact architecture are identical.
Q: What is the key difference between substitute parts with different flange types?
A: Flange features determine mounting interface. Board Side (M3) on L77SDCG37SOL2 is M3 screw-mounted to the board. Mating Side Female Screwlock (4-40) allows direct locking with mating male connectors. Housing/Shell (4-40) provides threaded shell mounting for panel or frame applications. Housing/Shell (Unthreaded) eliminates threading for simpler integration.
Q: Does the 6A rating of substitute parts create compatibility issues if my original application uses 3A?
A: No. The 6A rating of substitute parts is a higher current capacity specification and does not affect backward compatibility. Circuits designed for 3A operation function identically with 6A-rated connectors.
Q: Are all substitute parts suitable for applications requiring 250V operation?
A: No. Substitute parts in the AMPLIMITE HD-20 series carry a 125V voltage rating, compared to the L77SDCG37SOL2 specification of 250V. For applications exceeding 125V, the original L77SDCG37SOL2 or equivalent 250V-rated parts must be used.
Q: What is the significance of the dielectric material difference (Thermoplastic Glass Filled vs. Polyester)?
A: Both materials meet UL94 V-0 flammability requirements and provide adequate dielectric properties for 37-position signal transmission. Thermoplastic Glass Filled (original) and Polyester (substitutes) differ in mechanical rigidity and thermal expansion characteristics; both are functionally equivalent within the specified operating temperature ranges.
Q: Which substitute part offers the best supply availability?
A: Part 5747301-8 maintains the highest inventory at 32,900 units in stock, with full RoHS compliance and standard Housing/Shell (4-40) mounting configuration, making it the primary recommendation for supply chain continuity.
Q: Are there differences in gold plating thickness between the main part and substitutes?
A: Yes. L77SDCG37SOL2 specifies Flash gold finish, while most substitutes provide 30.0µin (0.76µm) thickness. Part 5747301-7 also uses Flash finish. Both finishes deliver equivalent gold plating functionality for signal transmission and corrosion resistance in standard environments.
Q: Do I need to evaluate REACH compliance for connector selection?
A: REACH Affected parts (2-5747709-0, 5745059-4, 5745079-4, 5745079-6, 5747301-7, 5747301-8, 5787685-1) contain substances of very high concern (SVHC) that require supply chain documentation and registration for EU market applications. REACH Unaffected or Vendor Undefined parts may require additional classification confirmation from suppliers.
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