L177DFEH09STRM8 D-Sub Receptacle Equivalent & Substitute Parts

Part Overview

The L177DFEH09STRM8 is a 9-position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This panel-mount, through-hole solder connector features female sockets with a 2-row configuration in shell size 1 (DE, E). The connector is currently active in production and maintains 832 units in stock inventory.

D-Sub receptacle connectors serve as mating interfaces for signal transmission in industrial, telecommunications, and computing applications. Substitution becomes necessary when the primary part reaches end-of-life status, inventory depletion, or when alternative manufacturers offer equivalent performance with improved compliance certifications or availability.

Key Parameters

Parameter	L177DFEH09STRM8 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
Contact Finish Thickness	30.0µin (0.76µm)
Current Rating (Amps)	7.5A
Voltage Rating	300V
Operating Temperature Range	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
Contact Material	Copper Alloy
Contact Form	Machined
Flange Feature	Board Side (4-40)
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution compatibility for the L177DFEH09STRM8 is determined by the following critical parameters:

Mandatory Matching 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)
Mounting Type: Panel Mount, Through Hole
Termination: Solder
Contact Type: Signal

Allowable Variation Parameters:

Shell Material and Finish (Steel with various plating options)
Contact Finish (Gold or alternative finishes)
Flange Feature (Board Side with 4-40 threading or Housing/Shell unthreaded)
Dielectric Material (Thermoplastic, Glass Filled; Polycyclohexylenedimethylene Terephthalate; Polybutylene Terephthalate; Polyamide)
Contact Form (Machined or Stamped)
Current Rating (5A to 7.5A range acceptable for signal applications)
Operating Temperature Range (minimum -55°C to 125°C or -20°C to 125°C)
RoHS Compliance Status (both compliant and non-compliant options available)

Substitute parts must maintain electrical continuity, mechanical fit within the D-Sub shell size 1 standard, and solder termination compatibility. Parts with different mounting types, position counts, or shell sizes are not substitutable.

Parameter Comparison

Parameter	L177DFEH09STRM8	09641127230	09641127235	09661116503	09661117503	09661556513	172-009-212R021	172-E09-213R001	172-E09-213R011	172-E09-213R021	172-E09-213R911
Manufacturer	Amphenol ICC	HARTING	HARTING	HARTING	HARTING	HARTING	NorComp Inc.	NorComp Inc.	NorComp Inc.	NorComp Inc.	NorComp Inc.
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	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	Panel Mount, Through Hole	Panel Mount, Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Shell Material, Finish	Steel, Tin Plated	Steel	Steel, Tin Plated	Steel	Steel	Steel	Steel, Tin Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated
Contact Finish	Gold	Not Specified	Not Specified	Not Specified	Not Specified	Gold	Gold	Gold	Gold	Gold	Gold
Current Rating (Amps)	7.5A	7.5A	7.5A	6.5A	6.5A	6.5A	5A	5A	5A	5A	5A
Voltage Rating	300V	100V	100V	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified
Operating Temperature Range	-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	-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	UL94 V-0	UL94 V-0
Contact Material	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Brass	Brass	Brass	Brass	Brass
Contact Form	Machined	Machined	Machined	Stamped	Stamped	Stamped	Machined	Machined	Machined	Machined	Machined
Flange Feature	Board Side (4-40)	Housing/Shell (Unthreaded)	Board Side (4-40)	Mating Side, Female Screwlock (4-40)	Mating Side, Female Screwlock (4-40)	Mating Side, Female Screwlock (4-40)	Board Side (4-40)	Housing/Shell (Unthreaded)	Board Side (4-40)	Board Side (4-40)	Board Side (4-40), Mating Side, Female Screwlock (4-40)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active	Active	Obsolete	Active	Active	Active	Active

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

The HARTING part 09641127235 provides the closest electrical and mechanical equivalence to the L177DFEH09STRM8. This part maintains the 9-position, 2-row D-Sub receptacle configuration with panel mount, through-hole solder termination and board-side 4-40 flange mounting. The 09641127235 achieves ROHS3 compliance, addressing regulatory requirements that the original part does not meet. Current rating of 7.5A matches the primary part specification. The primary trade-off is a reduced voltage rating (100V versus 300V) and narrower operating temperature range (-20°C to 125°C versus -55°C to 125°C). This substitute is suitable for applications where the 300V and -55°C specifications are not required.

The NorComp 172-E09-213R011 offers panel-mount, board-side 4-40 flange configuration with active product status and ROHS3 compliance. This part maintains machined contact form and gold finish. The 172-E09-213R011 operates across -50°C to 100°C and carries a 5A current rating, representing reduced electrical capacity compared to the primary part. This substitute is appropriate for signal-level applications where the lower current and temperature specifications are acceptable.

Secondary Substitutes (Functional Equivalence with Mounting Variations):

The HARTING 09661556513 maintains the full -55°C to 125°C operating temperature range and includes board lock features. This part features mating-side female screwlock (4-40) flange configuration rather than board-side mounting, requiring mechanical redesign of the mating interface. The 6.5A current rating and stamped contact form represent functional alternatives for applications where mating-side locking is beneficial.

The NorComp 172-E09-213R021 provides panel-mount, board-side 4-40 configuration with active status and ROHS3 compliance. Operating temperature range of -50°C to 100°C and 5A current rating are reduced specifications suitable for standard signal applications.

Obsolete Part Consideration:

The NorComp 172-009-212R021 carries obsolete product status and should not be selected for new designs despite functional compatibility. This part is listed only for reference in legacy system documentation.

Compliance Consideration:

All substitute parts listed achieve ROHS3 compliance, whereas the L177DFEH09STRM8 is RoHS non-compliant. Selection of compliant substitutes addresses regulatory requirements for new product designs and manufacturing environments subject to RoHS directives.

Frequently Asked Questions (FAQ)

Q: Can I substitute the L177DFEH09STRM8 with a part that has a lower current rating?

A: Yes, if your application operates below the substitute part's current rating. The HARTING 09641127235 and NorComp 172-E09-213R011 both carry 5A to 7.5A ratings. Verify that your circuit current does not exceed the substitute part's specification. Lower current ratings do not affect mechanical compatibility or signal integrity in applications operating within the rated current envelope.

Q: What is the difference between board-side and mating-side flange mounting?

A: Board-side flange (4-40) mounting secures the connector to the PCB or panel with fasteners on the connector body facing the board. Mating-side female screwlock (4-40) mounting places the fastening interface on the connector's mating end, allowing the mating plug to lock directly to the receptacle. Selection depends on your mechanical assembly design and whether you require connector locking at the mating interface.

Q: Are the HARTING and NorComp substitutes mechanically interchangeable with the Amphenol L177DFEH09STRM8?

A: Yes, all listed substitutes maintain the D-Sub shell size 1 (DE, E) standard with 9 positions in 2 rows. Mechanical fit within the connector cavity and pin alignment are identical. Solder termination compatibility is maintained across all parts. Differences in flange feature design (board-side versus mating-side) require mechanical redesign of the mounting interface but do not affect the connector's internal electrical function.

Q: Why do some substitutes have lower voltage ratings than the primary part?

A: The HARTING 09641127235 and 09641127235 specify 100V voltage rating compared to the L177DFEH09STRM8's 300V rating. This reflects different dielectric material specifications and design margins. For applications operating at signal levels below 100V, these substitutes provide full functional equivalence. Applications requiring 300V isolation or high-voltage signal transmission must retain the primary part or select alternatives with matching voltage specifications.

Q: What is the significance of RoHS compliance in selecting a substitute?

A: RoHS3 compliance indicates the connector meets Restriction of Hazardous Substances directives, restricting lead, cadmium, mercury, and other hazardous materials. The L177DFEH09STRM8 is RoHS non-compliant. All listed substitutes achieve ROHS3 compliance. New product designs, particularly those destined for European markets or regulated industries, require RoHS-compliant components. Substitution to a compliant part addresses regulatory requirements without functional compromise.

Q: Can I use a substitute with a narrower operating temperature range?

A: Yes, if your application operates within the substitute part's temperature specification. The L177DFEH09STRM8 operates -55°C to 125°C. The HARTING 09641127235 operates -20°C to 125°C, and NorComp 172-E09-213R011 operates -50°C to 100°C. Verify that your equipment's minimum and maximum operating temperatures fall within the substitute part's range. Applications in extreme cold environments (below -20°C) or high-temperature environments (above 100°C) require parts with matching extended specifications.

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

A: Machined contacts are individually formed from solid material, providing consistent contact pressure and durability in high-cycle mating applications. Stamped contacts are formed from sheet material, offering cost efficiency with acceptable performance in standard signal applications. The L177DFEH09STRM8 uses machined contacts. Substitutes with stamped contacts (HARTING 09661116503, 09661117503, 09661556513) provide equivalent electrical function for applications not requiring extreme mating cycle durability.

Q: Are there inventory considerations when selecting a substitute?

A: Yes. The L177DFEH09STRM8 maintains 832 units in stock. Substitute availability varies: HARTING 09641127235 has 1362 units, HARTING 09641127230 has 1024 units, and NorComp 172-E09-213R011 has 993 units. Higher inventory levels in substitute parts may provide supply chain advantages for high-volume production or long-term availability assurance.

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