L77TSCG37SOL2

Part Overview

The L77TSCG37SOL2 is a 37-position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This female socket connector features through-hole vertical mounting with solder termination, rated for 5A at 600V, and operates across the extended temperature range of -55°C to 125°C. The component maintains Active product status and is RoHS Compliant with MSL Level 1 (Unlimited). Substitute components are required when specific mounting configurations, material specifications, or contact characteristics differ from the original design requirements.

Key Parameters

Parameter	L77TSCG37SOL2
Connector Style	D-Sub
Connector Type	Receptacle, Female Sockets
Number of Positions	37
Shell Size, Connector Layout	4 (DC, C)
Mounting Type	Through Hole
Termination	Solder
Flange Feature	Board Side (M3)
Shell Material, Finish	Steel, Tin Plated
Contact Finish	Gold, Flash
Current Rating (Amps)	5A
Voltage Rating	600V
Operating Temperature	-55°C ~ 125°C
Contact Material	Copper Alloy
Dielectric Material	Thermoplastic, Glass Filled
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution of the L77TSCG37SOL2 is determined by the following critical parameters: connector style (D-Sub), connector type (Receptacle, Female Sockets), number of positions (37), shell size and layout (4 DC, C), mounting type (Through Hole), and termination method (Solder). All substitute parts maintain these core specifications.

Secondary parameters affecting substitution include flange feature type, shell material and finish, contact material composition, dielectric material, voltage rating, current rating, and operating temperature range. Variations in these parameters create distinct substitution groups:

Group 1: Direct Equivalents with Through Hole Mounting

A-DF 37 PP/Z: Housing/Shell (Unthreaded) flange, Tin-plated steel shell, Copper Alloy contacts, 3A rating, 250V, -20°C to 105°C
DC37S364TLF: Housing/Shell (Unthreaded) flange, Tin-plated steel shell, Copper Alloy contacts, 5A rating, 300V, -55°C to 125°C
D37S24A4GX00LF: Housing/Shell (4-40) flange, Tin-Nickel-plated steel shell, Phosphor Bronze contacts, 5A rating, 300V, Board Lock feature, -55°C to 125°C
D37S24A4PL00LF: Housing/Shell (M3) flange, Tin-Nickel-plated steel shell, Phosphor Bronze contacts, 5A rating, 300V, -55°C to 125°C

Group 2: Panel Mount Variants

172-E37-213R001: Panel Mount/Through Hole, Housing/Shell (Unthreaded) flange, Nickel-plated steel shell, Brass contacts, 5A rating, -50°C to 100°C
172-E37-213R011: Panel Mount/Through Hole, Board Side (4-40) flange, Nickel-plated steel shell, Brass contacts, 5A rating, -50°C to 100°C
172-E37-213R031: Panel Mount/Through Hole, Mating Side (4-40) flange, Nickel-plated steel shell, Brass contacts, 5A rating, -50°C to 100°C
172-E37-213R911: Panel Mount/Through Hole, Board Side (4-40) and Mating Side Female Screwlock (4-40), Nickel-plated steel shell, Brass contacts, Board Lock feature, 5A rating, -50°C to 100°C

Parameter Comparison

Parameter	L77TSCG37SOL2	A-DF 37 PP/Z	DC37S364TLF	D37S24A4GX00LF	D37S24A4PL00LF	172-E37-213R001	172-E37-213R011	172-E37-213R031	172-E37-213R911
Connector Style	D-Sub	D-Sub	D-Sub	D-Sub	D-Sub	D-Sub	D-Sub	D-Sub	D-Sub
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
Number of Positions	37	37	37	37	37	37	37	37	37
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)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Panel Mount, Through Hole	Panel Mount, Through Hole	Panel Mount, Through Hole	Panel Mount, Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Current Rating (Amps)	5A	3A	5A per Contact	5A per Contact	5A per Contact	5A	5A	5A	5A
Voltage Rating	600V	250V	300V	300V	300V	—	—	—	—
Operating Temperature	-55°C ~ 125°C	-20°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-50°C ~ 100°C	-50°C ~ 100°C	-50°C ~ 100°C	-50°C ~ 100°C
Contact Material	Copper Alloy	Copper Alloy	Copper Alloy	Phosphor Bronze	Phosphor Bronze	Brass	Brass	Brass	Brass
Shell Material, Finish	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin-Nickel Plated	Steel, Tin-Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated
RoHS Status	RoHS Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalents (Through Hole, Vertical Mounting)

DC37S364TLF and D37S24A4GX00LF maintain the full operating temperature range of -55°C to 125°C and 5A current rating of the original L77TSCG37SOL2. DC37S364TLF offers equivalent voltage and thermal specifications with Copper Alloy contacts and Tin plating. D37S24A4GX00LF provides enhanced mechanical stability through Tin-Nickel plating and Board Lock feature, with Phosphor Bronze contacts and 300V rating. D37S24A4PL00LF matches thermal and current specifications with M3 mounting flange identical to the original.

A-DF 37 PP/Z maintains through-hole mounting and Copper Alloy contacts with Tin plating but operates at reduced temperature range (-20°C to 105°C) and lower current rating (3A) and voltage rating (250V). This variant is suitable only when operating conditions remain within these narrower specifications.

Panel Mount Variants

The NorComp 172-E37 series (213R001, 213R011, 213R031, 213R911) supports both Panel Mount and Through Hole configurations. All variants maintain 5A current rating and ROHS3 compliance. Operating temperature range of -50°C to 100°C is narrower than the original specification. These connectors feature Nickel-plated steel shells and Brass contacts. The 213R911 variant includes Board Lock feature with female screwlock at mating side.

Compliance and Product Status

All substitute parts maintain Active product status. RoHS compliance is confirmed across all variants. The 172-E37 series and D37S24A4GX00LF are ROHS3 Compliant, while the original L77TSCG37SOL2, DC37S364TLF, D37S24A4PL00LF, and A-DF 37 PP/Z are RoHS Compliant. ECCN classification EAR99 is consistent across all components.

Frequently Asked Questions (FAQ)

Q: Can A-DF 37 PP/Z directly replace L77TSCG37SOL2 in all applications? A: A-DF 37 PP/Z maintains D-Sub 37-position receptacle configuration and through-hole mounting, but operates at 3A maximum (versus 5A) with 250V rating (versus 600V) and reduced temperature range (-20°C to 105°C versus -55°C to 125°C). Substitution is valid only when circuit requirements remain within these reduced electrical and thermal specifications.

Q: What is the key difference between through-hole and panel mount variants? A: The L77TSCG37SOL2 and Amphenol variants (DC37S364TLF, D37S24A4GX00LF, D37S24A4PL00LF) feature through-hole vertical mounting with housing/shell or board-side flanges. The NorComp 172-E37 series supports both panel mount and through-hole configurations with board-side, housing-side, or mating-side flanges, enabling flexible installation in either through-hole or panel-mounted applications.

Q: Are there electrical rating limitations when substituting? A: Yes. The original L77TSCG37SOL2 is rated for 600V and 5A. Substitute parts with lower voltage or current ratings (specifically A-DF 37 PP/Z at 250V, 3A) reduce electrical capability. DC37S364TLF, D37S24A4GX00LF, and D37S24A4PL00LF are rated at 300V and 5A, suitable for applications not exceeding these limits. The 172-E37 series does not specify voltage rating in the data provided.

Q: What contact material differences affect performance? A: The original L77TSCG37SOL2 uses Copper Alloy contacts. Substitutes employ Copper Alloy (A-DF 37 PP/Z, DC37S364TLF), Phosphor Bronze (D37S24A4GX00LF, D37S24A4PL00LF), or Brass (172-E37 series). Phosphor Bronze and Brass contacts provide enhanced durability and corrosion resistance compared to Copper Alloy, particularly beneficial in demanding environmental or high-cycle applications.

Q: How do shell material finishes impact corrosion resistance? A: The original L77TSCG37SOL2 employs Tin plating on steel shell. Nickel-plated variants (172-E37 series) and Tin-Nickel plated variants (D37S24A4GX00LF, D37S24A4PL00LF) provide superior corrosion resistance in harsh or moisture-prone environments. Nickel plating offers enhanced long-term reliability, while dual Tin-Nickel plating combines cost-effectiveness with improved protection.

Q: What determines operating temperature range compatibility? A: The original L77TSCG37SOL2 operates -55°C to 125°C. Amphenol Delta D variants (DC37S364TLF, D37S24A4GX00LF, D37S24A4PL00LF) match this range. A-DF 37 PP/Z limits operation to -20°C to 105°C due to dielectric material composition. The 172-E37 series restricts operation to -50°C to 100°C. Substitution is valid when system requirements remain within the substitute part's temperature specification.

Q: What is the Board Lock feature in D37S24A4GX00LF and 172-E37-213R911? A: Board Lock is a mechanical locking feature that secures the connector against accidental separation. D37S24A4GX00LF integrates this through shell design, while 172-E37-213R911 adds female screwlock at the mating side (4-40). This feature increases mechanical stability and is beneficial in applications subject to vibration or movement.

Q: Are all substitutes suitable for the same packaging specifications? A: Yes. All substitute parts are supplied in Tray packaging, matching the L77TSCG37SOL2 specification. All components maintain MSL Level 1 (Unlimited) or Not Applicable Moisture Sensitivity Level, ensuring compatibility with standard storage and handling procedures.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message