L77DFEF09SU D-Sub 9 Position Receptacle Connector Equivalent & Substitute Parts

Part Overview

The L77DFEF09SU is a 9 Position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This panel mount, through-hole solder termination connector features female sockets in a DE/E shell size configuration. The connector is classified as Active product status and is RoHS Compliant with REACH Unaffected designation.

Substitute parts are necessary when the original L77DFEF09SU becomes unavailable, when alternative mounting configurations are required, or when design modifications necessitate different flange features or material specifications while maintaining core electrical and mechanical compatibility.

Key Parameters

Parameter	L77DFEF09SU Specification
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	Panel Mount, Through Hole
Termination	Solder
Shell Material, Finish	Steel, Tin Plated
Contact Finish	Gold
Current Rating (Amps)	7.5A
Voltage Rating	300V
Operating Temperature	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS Compliant
Contact Form	Machined
Contact Material	Copper Alloy

Substitute Part Grouping Explanation

Substitution eligibility for the L77DFEF09SU is determined by the following mandatory parameters:

Core Compatibility Parameters:

Connector Style: D-Sub
Connector Type: Receptacle, Female Sockets
Number of Positions: 9
Number of Rows: 2
Shell Size, Connector Layout: 1 (DE, E)
Termination: Solder
Material Flammability Rating: UL94 V-0

Electrical Performance Parameters:

Current Rating: 7.5A or higher
Voltage Rating: 300V or higher (when specified)
Operating Temperature Range: Must encompass -55°C to 125°C or be compatible with application requirements

Compliance Parameters:

RoHS Status: RoHS Compliant or ROHS3 Compliant
REACH Status: REACH Unaffected
Product Status: Active or Obsolete (with engineering review)

Substitute parts may differ in the following parameters without affecting core functionality:

Mounting configuration (Panel Mount vs. Through Hole variations)
Flange feature type (Housing/Shell Unthreaded, Board Side, Mating Side)
Shell finish (Tin Plated vs. unspecified)
Contact finish thickness specifications
Dielectric material composition
Contact form (Machined vs. Stamped)
Color designation

Parameter Comparison

Parameter	L77DFEF09SU (Amphenol ICC)	09641127230 (HARTING)	09641127235 (HARTING)	09661116503 (HARTING)	09661117503 (HARTING)	09661556513 (HARTING)	172-E09-213R011 (NorComp)	172-E09-213R021 (NorComp)	172-E09-213R911 (NorComp)
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	9	9	9	9	9	9	9	9	9
Number of Rows	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)
Mounting Type	Panel Mount, Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Panel Mount, Through Hole	Panel Mount, Through Hole	Panel Mount, Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Shell Material, Finish	Steel, Tin Plated	Steel	Steel, Tin Plated	Steel	Steel	Steel	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated
Contact Finish	Gold	Not Specified	Not Specified	Not Specified	Not Specified	Gold	Gold	Gold	Gold
Current Rating (Amps)	7.5A	7.5A	7.5A	6.5A	6.5A	6.5A	5A	5A	5A
Voltage Rating	300V	100V	100V	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified
Operating Temperature	-55°C ~ 125°C	-20°C ~ 125°C	-20°C ~ 125°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
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
Contact Form	Machined	Machined	Machined	Stamped	Stamped	Stamped	Machined	Machined	Machined
Contact Material	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Brass	Brass	Brass
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Tier 1 Direct Substitutes (Highest Compatibility):

The HARTING 09641127230 and 09641127235 connectors provide the closest electrical compatibility with the L77DFEF09SU, maintaining the 7.5A current rating and UL94 V-0 flammability rating. Both parts are Active status and ROHS3 Compliant. The 09641127235 includes board lock and filter features with board-side flange configuration. These parts differ in mounting type (Through Hole vs. Panel Mount) and operating temperature range (-20°C to 125°C vs. -55°C to 125°C).

Tier 2 Substitutes (Conditional Compatibility):

The HARTING 09661116503, 09661117503, and 09661556513 connectors maintain the full -55°C to 125°C operating temperature range and UL94 V-0 rating. However, these parts feature reduced current rating (6.5A vs. 7.5A) and stamped contact form rather than machined. The 09661556513 includes gold contact finish and board lock features. These parts are suitable for applications where the 6.5A current rating is acceptable.

Tier 3 Substitutes (Limited Compatibility):

The NorComp 172-E09 series (172-E09-213R011, 172-E09-213R021, 172-E09-213R911) are Active status, ROHS3 Compliant connectors with panel mount configuration. These parts feature reduced current rating (5A vs. 7.5A), lower maximum operating temperature (100°C vs. 125°C), and brass contact material rather than copper alloy. The 172-E09-213R911 includes board lock and mating-side female screwlock features. These parts are suitable only for applications with lower current and temperature requirements.

Compliance Verification:

All substitute parts maintain UL94 V-0 flammability rating and REACH Unaffected status. All listed substitutes are either Active or Obsolete status with ROHS3 Compliant designation, ensuring regulatory compliance for new designs and legacy system support.

Frequently Asked Questions (FAQ)

Q: Can the HARTING 09641127230 directly replace the L77DFEF09SU in all applications?

A: The 09641127230 maintains electrical compatibility (7.5A current rating, UL94 V-0) and core mechanical specifications (9 position, DE/E shell, solder termination). However, it differs in mounting type (Through Hole only vs. Panel Mount) and operating temperature range (-20°C to 125°C vs. -55°C to 125°C). Substitution is valid only when the application does not require panel mount configuration and operates above -20°C.

Q: What is the significance of the current rating difference between the L77DFEF09SU (7.5A) and the HARTING 09661116503 (6.5A)?

A: Current rating indicates the maximum continuous current the connector contacts can safely carry without exceeding temperature limits. The 1A difference represents a 13% reduction in current capacity. Substitution with the 09661116503 is valid only when the application current requirement does not exceed 6.5A. Exceeding this rating may result in contact overheating and connector failure.

Q: Are the NorComp 172-E09 series connectors suitable replacements for high-temperature applications?

A: The NorComp 172-E09 series has a maximum operating temperature of 100°C, compared to the L77DFEF09SU specification of 125°C. These connectors are not suitable for applications requiring operation at temperatures between 100°C and 125°C. Additionally, the 5A current rating is lower than the L77DFEF09SU specification. Substitution is valid only for applications operating below 100°C with current requirements not exceeding 5A.

Q: What is the difference between machined and stamped contact forms?

A: Machined contacts are individually formed from solid material, providing consistent geometry and typically superior contact reliability. Stamped contacts are formed from sheet material through stamping processes, offering cost advantages but potentially different contact characteristics. The L77DFEF09SU uses machined contacts. Substitutes using stamped contacts (HARTING 09661116503, 09661117503, 09661556513) may exhibit different mating force and contact resistance characteristics.

Q: Does the shell finish (Tin Plated vs. Nickel Plated) affect connector performance?

A: Shell finish provides corrosion protection and affects EMI shielding characteristics. The L77DFEF09SU uses Tin Plated finish, while NorComp 172-E09 series uses Nickel Plated finish. Both finishes provide adequate corrosion protection and maintain UL94 V-0 rating. Substitution is valid from a functional standpoint, though finish differences may affect appearance and long-term corrosion resistance in specific environmental conditions.

Q: Can I substitute a connector with unspecified voltage rating for the L77DFEF09SU (300V)?

A: The L77DFEF09SU specifies 300V voltage rating. Several substitute parts (HARTING 09661116503, 09661117503, 09661556513, and NorComp 172-E09 series) do not specify voltage rating in the provided data. Substitution with unspecified voltage rating parts requires engineering review of the application voltage requirements and the substitute part's actual voltage capability from the manufacturer's detailed specifications.

Q: What does "Board Lock" feature indicate in the 172-E09-213R911 connector?

A: Board Lock feature indicates the connector includes mechanical provisions to secure the connector to the circuit board, preventing accidental disconnection. The L77DFEF09SU does not include this feature. The 172-E09-213R911 with Board Lock provides additional mechanical security but requires compatible board-side mounting provisions. This feature difference does not affect electrical compatibility.

Q: Are all listed substitute parts available in the same packaging as the L77DFEF09SU?

A: The L77DFEF09SU is packaged in Tray format. HARTING substitutes (09641127230, 09641127235, 09661116503, 09661117503, 09661556513) are packaged in Bulk format. NorComp substitutes (172-E09-213R011, 172-E09-213R021, 172-E09-213R911) are packaged in Tray format. Packaging differences do not affect connector functionality but may affect procurement, handling, and inventory management procedures.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message