L77SDEG09SOL2G 9-Position D-Sub Receptacle Connector

Part Overview

The L77SDEG09SOL2G is a 9-position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This through-hole solder-terminated component features female sockets in a DE/E shell size configuration (1 position layout) with a steel tin-plated shell and gold-plated contacts. The connector is designed for general signal-level applications with a rated current capacity of 3A at 250V and operates across a temperature range of -55°C to 125°C.

The part carries Active product status and is RoHS compliant. Equivalent and substitute parts are necessary to address supply chain flexibility, availability constraints, manufacturing transitions, or specific application requirements that may benefit from alternative mechanical features or performance characteristics within compatible parameter ranges.

Key Parameters

Parameter	Specification
Manufacturer Part Number	L77SDEG09SOL2G
Manufacturer	Amphenol ICC (Commercial Products)
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
Current Rating (Amps)	3A
Voltage Rating	250V
Operating Temperature	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS Compliant
Series	SD

Substitute Part Grouping Explanation

Substitution validity for the L77SDEG09SOL2G is determined by strict adherence to core electrical and mechanical parameters. All substitute parts listed below maintain compatibility within the following critical parameters:

Non-negotiable parameters for substitution:

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
Material Flammability Rating: UL94 V-0
Contact Type: Signal
Moisture Sensitivity Level: 1 (Unlimited)

Parameters with acceptable variation:

Current Rating: Substitute parts rated at 6A, 6.5A, or 7.5A are acceptable for applications rated at 3A
Voltage Rating: Substitute parts rated at 100V or 125V are acceptable for 250V applications
Operating Temperature Range: Substitute parts with -20°C to -55°C minimum and 105°C to 125°C maximum are acceptable
Shell Material Finish: Steel variations (tin plated, unplated) are acceptable
Contact Finish: Gold or unspecified finishes are acceptable
Contact Material: Phosphor Bronze and Copper Alloy are interchangeable
Dielectric Material: Thermoplastic variations (PBT, PCT) with UL94 V-0 rating are acceptable
Flange Feature: Board-side, housing-side, and mating-side configurations are acceptable based on application requirements
RoHS Status: Both RoHS Compliant and ROHS3 Compliant variants are acceptable

Parameter Comparison

Part Number	Manufacturer	Connector Type	Positions	Shell Size	Flange Feature	Current Rating (A)	Voltage Rating (V)	Operating Temp (°C)	Shell Material/Finish	Contact Finish	RoHS Status	Inventory (Pcs)
L77SDEG09SOL2G	Amphenol ICC	Receptacle, Female Sockets	9	1 (DE, E)	Board Side (M3)	3	250	-55 ~ 125	Steel, Tin Plated	Gold	RoHS Compliant	773
09641127230	HARTING	Receptacle, Female Sockets	9	1 (DE, E)	Housing/Shell (Unthreaded)	7.5	100	-20 ~ 125	Steel	—	ROHS3 Compliant	1024
09641127235	HARTING	Receptacle, Female Sockets	9	1 (DE, E)	Board Side (4-40)	7.5	100	-20 ~ 125	Steel, Tin Plated	—	ROHS3 Compliant	1362
09661116503	HARTING	Receptacle, Female Sockets	9	1 (DE, E)	Mating Side, Female Screwlock (4-40)	6.5	—	-55 ~ 125	Steel	—	ROHS3 Compliant	992
09661117503	HARTING	Receptacle, Female Sockets	9	1 (DE, E)	Mating Side, Female Screwlock (4-40)	6.5	—	-55 ~ 125	Steel	—	ROHS3 Compliant	1148
09661556513	HARTING	Receptacle, Female Sockets	9	1 (DE, E)	Mating Side, Female Screwlock (4-40)	6.5	—	-55 ~ 125	Steel	Gold	ROHS3 Compliant	1873
1-338313-2	TE Connectivity AMP Connectors	Receptacle, Female Sockets	9	1 (DE, E)	Housing/Shell (4-40)	6	—	-55 ~ 105	Steel, Tin Plated	Gold	ROHS3 Compliant	2800
1-5747150-3	TE Connectivity AMP Connectors	Receptacle, Female Sockets	9	1 (DE, E)	Mating Side, Female Screwlock (4-40)	6	125	-55 ~ 105	Steel, Tin Plated	Gold	ROHS3 Compliant	7581
1-5747150-4	TE Connectivity AMP Connectors	Receptacle, Female Sockets	9	1 (DE, E)	Mating Side, Female Screwlock (4-40)	6	125	-55 ~ 105	Steel, Tin Plated	Gold	RoHS Compliant	1757
1-5747150-6	TE Connectivity AMP Connectors	Receptacle, Female Sockets	9	1 (DE, E)	Mating Side, Female Screwlock (4-40)	6	125	-55 ~ 105	Steel, Tin Plated	Gold	RoHS Compliant	3384
1-747150-4	TE Connectivity AMP Connectors	Receptacle, Female Sockets	9	1 (DE, E)	Mating Side, Female Screwlock (4-40)	6	125	-55 ~ 105	Steel, Tin Plated	Gold	RoHS non-compliant	1899

Engineering Selection Recommendations

RoHS Compliance Considerations: The main part (L77SDEG09SOL2G) carries RoHS Compliant status. Recommended substitute selections are HARTING 09661127235, 09661127230, HARTING 09661116503, 09661117503, 09661556513, and TE Connectivity 1-338313-2, 1-5747150-3, 1-5747150-4, and 1-5747150-6, which maintain either RoHS Compliant or ROHS3 Compliant designations. Part 1-747150-4 carries RoHS non-compliant status and should be evaluated against specific regulatory requirements.

Product Status: All listed substitute parts maintain Active product status, ensuring ongoing availability and manufacturer support equivalent to the main component.

Compliance Certifications: All parts listed carry UL94 V-0 material flammability rating, meeting the same safety standards as the original component. Parts with REACH status marked as Unaffected or Vendor Undefined align with available compliance documentation from respective manufacturers.

Frequently Asked Questions (FAQ)

Q: Can I substitute a HARTING 09641127235 for the Amphenol L77SDEG09SOL2G? A: Yes. The 09641127235 maintains the critical core parameters: 9-position D-Sub receptacle, female sockets, DE/E shell size, through-hole solder termination, UL94 V-0 rating, and unlimited moisture sensitivity. Its higher 7.5A current rating and lower 100V voltage rating are acceptable for applications designed for 3A at 250V. The board-side flange with 4-40 mounting differs from the M3 flange on the original part; confirm mechanical compatibility with your PCB design.

Q: What is the difference between board-side and mating-side flange configurations? A: Board-side flanges mount to the PCB surface with through-hole solder termination, securing the connector mechanically to the board. Mating-side flanges feature screwlock connectors on the mating end, providing strain relief and secure connection to the mating connector. Select based on your application's mechanical support and cable retention requirements.

Q: Are HARTING and TE Connectivity parts directly interchangeable with the Amphenol connector? A: All listed substitute parts are mechanically and electrically interchangeable within the constraints defined by compatible parameters. The 9-position DE/E shell configuration, contact layout, mounting type, and signal-level operation are identical. Verify that your PCB design accommodates the specific flange configuration of the selected substitute (M3 board-side, 4-40 board-side, or 4-40 mating-side screwlock).

Q: Can I use a substitute with lower voltage rating for a 250V application? A: Substitute parts with 100V or 125V ratings are acceptable for applications designed for 3A at 250V operation. Voltage rating represents the maximum isolation voltage the connector supports; operating at 250V with a 100V-rated connector is not recommended. If your application requires 250V isolation, select parts with specified 250V ratings or verify that the 100V-rated part meets your actual application voltage requirements.

Q: What is the temperature range consideration for substitute selection? A: The main part operates from -55°C to 125°C. Substitute parts operate within -55°C to 105°C (TE Connectivity parts) or -20°C to 125°C (HARTING parts). If your application requires full -55°C operation, avoid HARTING 09641127230 and 09641127235, which specify -20°C as the minimum operating temperature. TE Connectivity parts limit the maximum operating temperature to 105°C; applications exceeding 105°C should use the original Amphenol part or HARTING equivalents.

Q: Does contact finish material affect substitutability? A: Contact finish (gold or unspecified) affects signal integrity and contact resistance characteristics but does not prevent substitution within this connector category. The original part specifies gold-plated contacts with flash thickness. HARTING parts 09661116503, 09661117503, and 09641127230, 09641127235 do not specify contact finish, while 09661556513 specifies gold. TE Connectivity parts specify gold finish. For signal-critical applications or corrosive environments, prefer parts with specified gold contact finishes.

Q: Is the dielectric material variation significant? A: All parts maintain UL94 V-0 flammability rating with dielectric materials including thermoplastic glass-filled, polycyclohexylenedimethylene terephthalate (PCT), and polybutylene terephthalate (PBT). Material variation does not affect substitutability for standard signal-level applications. High-temperature or chemically aggressive environments may benefit from specific material evaluation; consult manufacturer datasheets for detailed material specifications.

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