L77SDEG09SOL2RM8G D-Sub 9-Position Receptacle Equivalent & Substitute Parts

Part Overview

The L77SDEG09SOL2RM8G is a 9-position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products) in the SD series. This connector features female sockets with through-hole solder termination, board-side M3 flange mounting, and tin-plated steel shell construction. The part is active in production with 921 units in current inventory stock.

D-Sub receptacle connectors serve as mating interfaces for signal transmission in electronic assemblies. Equivalent and substitute parts become necessary when addressing supply chain constraints, inventory availability, or specific application requirements that align with alternative manufacturers' offerings while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Connector Style	D-Sub
Connector Type	Receptacle, Female Sockets
Number of Positions	9
Number of Rows	2
Shell Size, Connector Layout	1 (DE, E)
Mounting Type	Through Hole
Termination	Solder
Shell Material, Finish	Steel, Tin Plated
Contact Finish	Gold
Contact Material	Phosphor Bronze
Current Rating (Amps)	3A
Voltage Rating	250V
Operating Temperature	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the L77SDEG09SOL2RM8G is determined by the following critical parameters:

Core Compatibility Requirements:

Connector style: D-Sub
Connector type: Receptacle, Female Sockets
Number of positions: 9
Number of rows: 2
Shell size, connector layout: 1 (DE, E)
Mounting type: Through Hole
Termination: Solder
Contact finish: Gold
Contact material: Phosphor Bronze
Material flammability rating: UL94 V-0

Acceptable Variation Parameters:

Shell material finish (tin plated, nickel plated, or yellow chromate plated zinc)
Current rating (equal to or greater than 3A)
Voltage rating (equal to or greater than 250V, or unspecified)
Operating temperature range (must encompass or overlap the -55°C to 125°C range)
Flange feature type (board-side M3, board-side 4-40, or housing/shell unthreaded)
Dielectric material composition
RoHS compliance status (both compliant and non-compliant variants listed)

Substitute parts meeting these criteria maintain functional and mechanical interchangeability within standard D-Sub connector applications.

Parameter Comparison

Parameter	L77SDEG09SOL2RM8G (Main)	172-009-283L001	205734-7	5205734-7	5745183-1	5745183-2	5745183-3	5745183-7	5747190-1	5747190-2	5747190-4
Manufacturer	Amphenol ICC	NorComp Inc.	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
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	9	9	9	9	9	9	9	9	9	9	9
Number of Rows	2	2	2	2	2	2	2	2	2	2	2
Shell Size, Connector Layout	1 (DE, E)	1 (DE, E)	1 (DE, E)	1 (DE, E)	1 (DE, E)	1 (DE, E)	1 (DE, E)	1 (DE, E)	1 (DE, E)	1 (DE, E)	1 (DE, E)
Mounting Type	Through Hole	Panel Mount, 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
Shell Material, Finish	Steel, Tin Plated	Steel, Nickel Plated	Steel, Yellow Chromate Plated Zinc	Steel, Yellow Chromate Plated Zinc	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	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 Material	Phosphor Bronze	Brass	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Current Rating (Amps)	3A	5A	6A	6A	6A	6A	6A	6A	6A	6A	6A
Voltage Rating	250V	Not Specified	125V	125V	125V	125V	125V	125V	125V	125V	125V
Operating Temperature	-55°C ~ 125°C	-50°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
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	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	RoHS Compliant
Product Status	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
Inventory (Pcs)	921	917	2350	4149	1458	1224	1861	1417	6197	2545	1115

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

The TE Connectivity AMP Connectors parts 5745183-1, 5745183-2, 5745183-3, and 5745183-7 from the AMPLIMITE HDP-20 series provide direct functional equivalence to the L77SDEG09SOL2RM8G. These parts share identical core specifications: 9-position D-Sub receptacle configuration, phosphor bronze contacts with gold finish, tin-plated steel shell, UL94 V-0 flammability rating, and through-hole solder termination. All four variants are RoHS3 compliant and maintain the same operating temperature range of -55°C to 105°C. Current rating is increased to 6A, exceeding the 3A requirement. These parts are available in tube packaging with inventory levels ranging from 1,224 to 1,861 units.

Secondary Substitutes (Acceptable with Operational Considerations):

The TE Connectivity parts 5747190-1, 5747190-2, and 5747190-4 from the AMPLIMITE HDP-20 series offer equivalent electrical performance with board-side 4-40 flange mounting instead of M3. These connectors maintain phosphor bronze contacts, gold finish, tin-plated steel shell, and 6A current rating. RoHS compliance varies: 5747190-1 and 5747190-4 are RoHS compliant, while 5747190-2 is ROHS3 compliant. Inventory availability is higher, with 5747190-1 offering 6,197 units in stock.

Alternative with Different Contact Material:

The NorComp Inc. part 172-009-283L001 provides a 9-position D-Sub receptacle with brass contacts instead of phosphor bronze. This part features nickel-plated steel shell, 5A current rating, and ROHS3 compliance. The operating temperature range is -50°C to 125°C. This variant is suitable for applications where contact material substitution is acceptable and panel-mount capability is beneficial.

Non-Compliant Alternative:

The TE Connectivity part 205734-7 is RoHS non-compliant and should be selected only when regulatory requirements do not mandate RoHS compliance. This part offers 6A current rating and yellow chromate plated zinc shell finish. It is available in bulk packaging with 2,350 units in inventory.

Frequently Asked Questions (FAQ)

Q: Can I substitute the L77SDEG09SOL2RM8G with any of the listed alternatives without design modification?

A: The TE Connectivity AMPLIMITE HDP-20 series parts (5745183-1, 5745183-2, 5745183-3, 5745183-7, 5747190-1, 5747190-2, 5747190-4) are direct functional equivalents requiring no design modification. The NorComp 172-009-283L001 is compatible but features brass contacts instead of phosphor bronze. The TE Connectivity 205734-7 is compatible but is RoHS non-compliant.

Q: What is the difference between the flange mounting options?

A: The L77SDEG09SOL2RM8G features board-side M3 flange mounting. The 5745183 series parts use housing/shell unthreaded flanges, while the 5747190 series uses board-side 4-40 mounting. All three flange types are through-hole solder termination variants suitable for PCB mounting, with differences in mechanical fastening method.

Q: Are all substitute parts RoHS compliant?

A: No. The TE Connectivity 205734-7 is RoHS non-compliant. The remaining substitutes are either RoHS compliant or ROHS3 compliant. Verify compliance requirements for your specific application before selection.

Q: What is the voltage rating difference between the main part and substitutes?

A: The L77SDEG09SOL2RM8G is rated at 250V. Most TE Connectivity substitutes are rated at 125V. The NorComp 172-009-283L001 has no specified voltage rating. For applications requiring 250V operation, the L77SDEG09SOL2RM8G is the appropriate selection.

Q: How do current ratings affect substitution?

A: The L77SDEG09SOL2RM8G is rated at 3A. All listed substitutes are rated at 5A or 6A, exceeding the original specification. Higher current ratings provide additional design margin and are acceptable for direct substitution in applications requiring 3A or less.

Q: What packaging options are available for the substitute parts?

A: The L77SDEG09SOL2RM8G packaging is not specified. Substitute parts are available in tray (NorComp 172-009-283L001), bulk (TE Connectivity 205734-7), and tube (all other TE Connectivity variants) packaging. Packaging selection depends on procurement and assembly requirements.

Q: Can I use the NorComp part as a direct substitute?

A: The NorComp 172-009-283L001 is mechanically and electrically compatible for most applications. The primary difference is brass contact material instead of phosphor bronze. This part also features panel-mount capability in addition to through-hole mounting. Verify contact material compatibility with your specific application requirements.

Q: What is the operating temperature range difference?

A: The L77SDEG09SOL2RM8G operates from -55°C to 125°C. The NorComp 172-009-283L001 operates from -50°C to 125°C, with a 5°C reduction at the lower temperature limit. TE Connectivity substitutes operate from -55°C to 105°C, with a 20°C reduction at the upper temperature limit. Select based on your application's thermal requirements.

Q: Which substitute has the highest inventory availability?

A: The TE Connectivity 5747190-1 has the highest inventory with 6,197 units in stock, followed by 5205734-7 with 4,149 units. These parts are suitable for high-volume procurement scenarios.

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