L177DFDH50SOL2RM8 Equivalent & Substitute Parts

Part Overview

The L177DFDH50SOL2RM8 is a 50-position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This panel-mount, through-hole solder termination connector features female sockets with a board-side flange and is designed for signal applications. The connector is currently active in production with 1100 pieces in stock inventory. Alternative equivalent parts are available from TE Connectivity AMP Connectors and Amphenol ICC (FCI) to support procurement flexibility, inventory management, and application-specific requirements.

Key Parameters

Parameter	Value
Connector Style	D-Sub
Connector Type	Receptacle, Female Sockets
Number of Positions	50
Number of Rows	3
Shell Size, Connector Layout	5 (DD, D)
Mounting Type	Panel Mount, Through Hole
Termination	Solder
Contact Type	Signal
Contact Finish	Gold
Voltage Rating	300V
Current Rating	7.5A
Operating Temperature Range	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution of the L177DFDH50SOL2RM8 is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

Connector style: D-Sub
Connector type: Receptacle, Female Sockets
Number of positions: 50
Number of rows: 3
Shell size and layout: 5 (DD, D)
Termination method: Solder
Contact type: Signal
Contact finish: Gold
Material flammability rating: UL94 V-0

Allowable Variation Parameters:

Mounting configuration (panel mount vs. through hole)
Flange feature design (board side vs. mating side)
Shell material and finish
Contact material composition
Voltage and current ratings (substitute must meet or exceed application requirements)
Operating temperature range (substitute must meet or exceed application requirements)
Packaging format (tray, tube, bulk)
RoHS compliance status
REACH compliance status

The three substitute parts listed below satisfy the mandatory matching parameters while offering variations in mounting approach, material composition, and regulatory compliance that may align with specific procurement or application constraints.

Parameter Comparison

Parameter	L177DFDH50SOL2RM8 (Amphenol ICC)	5745080-4 (TE Connectivity)	5745080-6 (TE Connectivity)	DDM50S332N (Amphenol ICC FCI)
Connector Type	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets
Number of Positions	50	50	50	50
Number of Rows	3	3	3	3
Shell Size, Connector Layout	5 (DD, D)	5 (DD, D)	5 (DD, D)	5 (DD, D)
Mounting Type	Panel Mount, Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder
Contact Type	Signal	Signal	Signal	Signal
Contact Finish	Gold	Gold	Gold	Gold
Contact Finish Thickness	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	50.0µin (1.27µm)
Voltage Rating	300V	125V	125V	300V
Current Rating	7.5A	6A	6A	7.5A per Contact
Operating Temperature Range	-55°C ~ 125°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Contact Material	Copper Alloy	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Shell Material, Finish	Steel, Tin Plated	Not Specified	Not Specified	Steel, Yellow Cadmium Plated
Dielectric Material	Thermoplastic, Glass Filled	Polyester	Polyester	Thermoplastic
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant
REACH Status	REACH Unaffected	REACH Affected	REACH Affected	REACH Affected
Packaging	Tray	Tube	Tube	Bulk
Inventory (Pcs)	1100	1425	1166	827

Engineering Selection Recommendations

L177DFDH50SOL2RM8 (Primary Part)

This part is recommended for applications requiring panel-mount configuration with board-side flange mounting. It maintains RoHS compliance and REACH unaffected status, making it suitable for regulated markets. The 300V rating and 7.5A current capacity support high-performance signal applications. Operating temperature range extends to 125°C. Tin-plated steel shell with copper alloy contacts provides standard environmental protection.

5745080-4 and 5745080-6 (TE Connectivity AMPLIMITE HD-20 Series)

These parts are functionally equivalent substitutes with the following considerations: Both are through-hole only (no panel-mount option), feature mating-side female screwlock flanges, and are packaged in tubes. Voltage rating is reduced to 125V and current rating to 6A, requiring verification that application requirements do not exceed these limits. Operating temperature maximum is 105°C. Both achieve ROHS3 compliance but carry REACH affected status. These parts are suitable for applications where the lower electrical ratings are acceptable and REACH compliance is not a constraint.

DDM50S332N (Amphenol ICC FCI DMW HE507 Series)

This part matches the 300V and 7.5A electrical ratings of the primary part and supports the full -55°C to 125°C operating temperature range. It features a housing/shell flange design (unthreaded) and bulk packaging. Contact finish thickness is increased to 50.0µin (1.27µm), providing enhanced wear resistance. However, this part is RoHS non-compliant and carries REACH affected status, restricting use in regulated markets. It is suitable for applications where RoHS compliance is not required and enhanced contact durability is beneficial.

Frequently Asked Questions (FAQ)

Q: Can the 5745080-4 or 5745080-6 be used as direct replacements for the L177DFDH50SOL2RM8?

A: These parts are functionally compatible for signal applications requiring 50-position D-Sub receptacle connectors with solder termination. However, they differ in mounting configuration (through-hole only vs. panel mount), flange design, and electrical ratings. The 125V and 6A ratings must be verified against application requirements. Operating temperature maximum is 105°C instead of 125°C.

Q: What is the difference between the two TE Connectivity parts (5745080-4 and 5745080-6)?

A: Both parts are from the AMPLIMITE HD-20 series with identical electrical specifications, operating temperature range, and material composition. The primary difference is packaging: 5745080-4 is supplied in tubes, as is 5745080-6. Both are functionally equivalent and interchangeable.

Q: Is the DDM50S332N suitable for RoHS-regulated applications?

A: No. The DDM50S332N is RoHS non-compliant and carries REACH affected status. It is not suitable for applications subject to RoHS or REACH regulatory requirements. Use the L177DFDH50SOL2RM8 or TE Connectivity parts (5745080-4, 5745080-6) for RoHS-compliant applications.

Q: What are the key differences in flange design between these parts?

A: The L177DFDH50SOL2RM8 features a board-side flange with 4-40 mounting holes, enabling panel-mount installation. The TE Connectivity parts (5745080-4, 5745080-6) feature mating-side female screwlock flanges (4-40) for through-hole mounting only. The DDM50S332N features a housing/shell flange (unthreaded) for through-hole mounting.

Q: Can I use the DDM50S332N in applications requiring the full 125°C operating temperature?

A: Yes. The DDM50S332N supports the full -55°C to 125°C operating temperature range, matching the L177DFDH50SOL2RM8. The TE Connectivity parts (5745080-4, 5745080-6) are limited to -55°C to 105°C.

Q: What is the significance of contact finish thickness differences?

A: The L177DFDH50SOL2RM8, 5745080-4, and 5745080-6 all feature 30.0µin (0.76µm) gold contact finish. The DDM50S332N features 50.0µin (1.27µm) gold contact finish, providing increased thickness and potentially enhanced durability in high-cycle mating applications.

Q: Are there packaging considerations when selecting a substitute?

A: Yes. The L177DFDH50SOL2RM8 is supplied in trays, while the TE Connectivity parts are supplied in tubes and the DDM50S332N in bulk. Packaging format may affect handling, storage, and integration

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