Equivalent & Substitute Parts for L777SDCG37POL2G

Part Overview

The L777SDCG37POL2G is a 37-position D-Sub plug connector manufactured by Amphenol ICC, featuring vertical solder termination and through-hole mounting. This connector is classified as Active and is in current production. Alternative parts become necessary when addressing application constraints such as higher current capacity requirements, enhanced environmental compliance, or specific flange configurations for different installation scenarios.

Key Parameters

Parameter	L777SDCG37POL2G (Main Part)
Number of Positions	37
Connector Type	Plug, Male Pins
Shell Size, Connector Layout	4 (DC, C)
Mounting Type	Through Hole
Termination	Solder
Current Rating	3A
Voltage Rating	250V
Operating Temperature Range	-55°C to 125°C
Contact Material	Brass
Contact Finish	Gold
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution of the L777SDCG37POL2G is determined by the following core parameters that must remain consistent across all acceptable alternatives:

Position Count and Row Configuration: 37 positions in 2-row layout (mandatory for pin compatibility)
Connector Type: Plug with male pins (required for mating interface)
Shell Size and Layout: Size 4 (DC, C) configuration (physical and electrical compatibility)
Mounting and Termination: Through-hole solder termination (assembly process compatibility)
Material Compatibility: Brass contact material with gold finish (electrical performance and corrosion resistance)
Color: Black (standardization)

The substitute parts listed below maintain these core parameters. Variations in current rating, voltage rating, flange feature design, dielectric material, shell finish, and compliance certifications are allowable substitutions based on specific application requirements.

Parameter Comparison

Parameter	L777SDCG37POL2G	2-5747705-1	208009-1	5208009-1	5745074-1	5745074-2	5745074-4	5747375-2	5747375-8	747375-2	747375-8
Manufacturer	Amphenol ICC	TE Connectivity	TE Connectivity	TE Connectivity	TE Connectivity	TE Connectivity	TE Connectivity	TE Connectivity	TE Connectivity	TE Connectivity	TE Connectivity
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
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
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	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 Material	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass
Contact Finish	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Color	Black	Black	Black	Black	Black	Black	Black	Black	Black	Black	Black
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
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
RoHS Status	RoHS Compliant	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	Not applicable
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)

Engineering Selection Recommendations

For RoHS3 Compliance Requirements: Parts 2-5747705-1, 5208009-1, 5745074-4, 5747375-2, and 5747375-8 carry ROHS3 Compliant certification and are suitable for applications requiring enhanced environmental compliance standards.

For RoHS Compliant Applications: Parts 5745074-1 and 5745074-2 maintain RoHS Compliant status equivalent to the main part, suitable for standard regulatory environments.

For Non-Compliant or Legacy Systems: Parts 208009-1 and 747375-2 carry RoHS non-compliant status, and 747375-8 is marked Not applicable. These parts are suitable only for applications without RoHS requirements.

For Higher Current Capacity: All substitute parts provide 6A current rating, compared to the main part's 3A rating. Selection should account for application current demands.

For Lower Temperature Operation: All substitute parts have an operating temperature upper limit of 105°C, compared to the main part's 125°C. Applications requiring operation at temperatures between 105°C and 125°C must retain the original L777SDCG37POL2G.

For Lower Voltage Applications: All substitute parts are rated at 125V, compared to the main part's 250V. Selection must ensure voltage compatibility with the application circuit.

Active Product Status: All substitute parts maintain Active product status, ensuring continued availability and support.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a different current rating? A: Yes. The substitute parts feature 6A current rating versus the main part's 3A. Selection depends on application current requirements. A higher-rated connector is acceptable for lower-current applications.

Q: Are all substitute parts mechanically compatible with the original? A: Yes. All parts maintain 37-position, 2-row configuration with size 4 (DC, C) shell layout and through-hole solder termination, ensuring mechanical compatibility in the same footprint.

Q: What is the impact of different flange features? A: Flange feature variations (Board Side, Mating Side Female Screwlock, or Housing/Shell configurations) affect mounting method and mating interface design. Selection must match the specific application's flange interface requirement.

Q: Does dielectric material selection affect performance? A: The main part uses thermoplastic glass-filled dielectric; most substitutes use polyester dielectric. Both materials meet UL94 V-0 flammability requirements. Selection depends on specific environmental and thermal stress conditions.

Q: How do I select based on RoHS compliance? A: Identify your application's regulatory requirements. ROHS3 Compliant parts (2-5747705-1, 5208009-1, 5745074-4, 5747375-2, 5747375-8) are suitable for the strictest standards. RoHS Compliant parts (5745074-1, 5745074-2) meet standard compliance. Non-compliant parts (208009-1, 747375-2, 747375-8) are limited to legacy or unregulated applications.

Q: What packaging considerations apply? A: The main part is supplied in Tray packaging. All substitute parts are supplied in Tube packaging. Verify that tube packaging is compatible with your receiving and handling procedures.

Q: Can I substitute due to inventory availability? A: Yes. All substitute parts share core functional parameters with the main part. Inventory availability may justify selection of any listed substitute, provided electrical, mechanical, and compliance requirements align with application specifications.

Q: What is the operating temperature limitation when substituting? A: Substitute parts operate from -55°C to 105°C, while the main part operates to 125°C. Applications requiring sustained operation above 105°C must use the original L777SDCG37POL2G.

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