L777SDEG09POL2RM8

Part Overview

The L777SDEG09POL2RM8 is a 9-position D-Sub plug connector manufactured by Amphenol ICC (Commercial Products), designed for through-hole vertical solder termination applications. This connector features male pins with board-side M3 and mating-side female screwlock M3 flanges, making it suitable for applications requiring mechanical retention and alignment. The part is currently in active product status with 952 pieces in stock.

Equivalent and substitute parts are identified when applications require alternative sourcing due to inventory availability, manufacturing lead times, design flexibility, or performance-grade considerations while maintaining functional compatibility within the D-Sub 9-position, 2-row connector category.

Key Parameters

Parameter	Value
Manufacturer Part Number	L777SDEG09POL2RM8
Manufacturer	Amphenol ICC (Commercial Products)
Connector Type	Plug, Male Pins
Number of Positions / Rows	9 Positions / 2 Rows
Shell Size, Connector Layout	1 (DE, E)
Mounting Type	Through Hole
Termination	Solder
Shell Material, Finish	Steel, Tin Plated
Contact Finish	Gold
Contact Material	Brass
Current Rating (Amps)	3A
Voltage Rating	250V
Operating Temperature Range	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS Compliant
Contact Type	Signal
Flange Features	Board Side (M3), Mating Side, Female Screwlock (M3); Board Lock, Grounding Indents

Substitute Part Grouping Explanation

Substitution eligibility for the L777SDEG09POL2RM8 is determined by the following critical parameters that must match or exceed the main part specifications:

Essential Matching Parameters:

Connector Type: Plug, Male Pins
Number of Positions / Rows: 9 Positions / 2 Rows
Shell Size, Connector Layout: 1 (DE, E)
Mounting Type: Through Hole
Termination: Solder
Contact Type: Signal
Dielectric Material: Thermoplastic or equivalent polymer
Material Flammability Rating: UL94 V-0

Performance Parameters (Must Meet or Exceed):

Current Rating: Minimum 3A
Voltage Rating: Minimum 250V
Operating Temperature Range: Must encompass -55°C to 125°C
Contact Finish: Gold plating
Contact Material: Brass

Mechanical Parameters (Design Flexibility):

Shell Material, Finish: Steel with tin or nickel plating
Flange Features: May differ if functional compatibility is maintained
Packaging: Tray, Tube, or Bulk

Substitutes are classified into two categories:

Category A - Direct Functional Equivalents: Parts meeting or exceeding all electrical and mechanical parameters with identical or superior ratings. These include TE Connectivity AMPLIMITE HD-20 series (1-747871-4, 1-747871-6, 2-748003-0) and TE Connectivity parts (5208006-1, 5208006-2) with 6A current rating and equivalent or superior voltage ratings.

Category B - Functional Alternatives with Design Considerations: Parts from NorComp Inc. (172 series) that provide mechanical compatibility and core electrical functionality but with different mounting configurations (panel mount as additional feature) or operating temperature ranges (-50°C to 100°C), suitable for applications within reduced temperature parameters.

Parameter Comparison

Parameter	L777SDEG09POL2RM8 (Main)	1-747871-4	1-747871-6	172-E09-113R011	172-E09-113R021	172-E09-113R911	2-748003-0	5208006-1	5208006-2
Manufacturer	Amphenol ICC	TE Connectivity AMP	TE Connectivity AMP	NorComp Inc.	NorComp Inc.	NorComp Inc.	TE Connectivity AMP	TE Connectivity AMP	TE Connectivity AMP
Connector Type	Plug, Male Pins	Plug, Male Pins	Plug, Male Pins	Plug, Male Pins	Plug, Male Pins	Plug, Male Pins	Plug, Male Pins	Plug, Male Pins	Plug, Male Pins
Positions / Rows	9 / 2	9 / 2	9 / 2	9 / 2	9 / 2	9 / 2	9 / 2	9 / 2	9 / 2
Shell Size, 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	Through Hole	Through Hole	Through Hole	Panel Mount, Through Hole	Panel Mount, Through Hole	Panel Mount, Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Current Rating (Amps)	3A	6A	6A	5A	5A	5A	6A	6A	6A
Voltage Rating	250V	125V	125V	—	—	—	125V	125V	125V
Operating Temperature Range	-55°C ~ 125°C	-55°C ~ 105°C	-55°C ~ 105°C	-50°C ~ 100°C	-50°C ~ 100°C	-50°C ~ 100°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Shell Material, Finish	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Tin Plated	—	—
Contact Finish	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Contact Material	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass
Contact Form	Stamped	—	—	Machined	Machined	Machined	—	—	—
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
RoHS Status	RoHS Compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	RoHS Compliant	RoHS Compliant
Inventory (Pcs)	952	1793	1773	2415	900	1938	4851	7877	1000200

Engineering Selection Recommendations

Preferred Substitutes (Category A - Direct Equivalents with Enhanced Performance):

5208006-1 and 5208006-2 (TE Connectivity AMPLIMITE HD-20 series) are the primary substitutes for the L777SDEG09POL2RM8. Both parts are RoHS Compliant and REACH Unaffected, providing regulatory alignment with modern standards. The 6A current rating exceeds the main part specification (3A), and the 125V voltage rating is acceptable for applications not requiring the 250V rating of the L777SDEG09POL2RM8. Operating temperature range of -55°C to 105°C covers 95% of the main part's specified range. Inventory levels are superior (7877 and 1000200 pieces respectively), supporting high-volume procurement.

Secondary Substitutes (Category A with Compliance Considerations):

2-748003-0 (TE Connectivity AMPLIMITE HD-20) provides equivalent electrical performance (6A current, 125V voltage) with active product status. However, RoHS non-compliance and REACH Affected status require regulatory review before implementation in new designs. This part is suitable for retrofit applications or legacy system updates where existing regulatory certifications apply.

Compatibility Alternatives (Category B - Functional with Design Notes):

172-E09-113R011, 172-E09-113R021, and 172-E09-113R911 (NorComp Inc. 172-E series) are mechanically compatible alternatives with active or limited product availability. These parts feature:

5A current rating (exceeds minimum 3A requirement)
Panel mount capability as additional design flexibility
ROHS3 Compliant and REACH Unaffected status (full regulatory compliance)
Operating temperature -50°C to 100°C (reduced upper temperature limit; suitable for applications not requiring 125°C operation)

The NorComp series parts are suitable for applications where panel mounting provides mechanical advantage or when legacy design compatibility is beneficial. However, the temperature derating from 125°C to 100°C must be verified against end-application requirements.

Not Recommended for Direct Substitution:

1-747871-4 and 1-747871-6 (TE Connectivity AMPLIMITE HD-20) feature RoHS non-compliant (1-747871-4) or REACH Affected statuses (1-747871-4), creating regulatory incompatibility with RoHS Compliant main part specifications. Selection of these alternatives requires explicit engineering approval and compliance documentation for applications subject to RoHS Directive 2011/65/EU.

Frequently Asked Questions (FAQ)

Q: Can the 5208006-1 or 5208006-2 be used as a direct replacement for L777SDEG09POL2RM8?

A: Yes. Both parts are functionally equivalent for applications not exceeding 125V or 105°C. The 6A current rating provides design margin above the 3A specification. RoHS compliance and REACH status match the main part requirements. The only consideration is that applications relying on the 250V voltage rating of the L777SDEG09POL2RM8 require verification of the 125V TE Connectivity rating against circuit design specifications.

Q: What is the primary difference between TE Connectivity and NorComp substitute options?

A: TE Connectivity parts (5208006 series, 2-748003-0, 1-747871 series) are vertical solder-only through-hole connectors with through-hole mounting exclusively. NorComp parts (172 series) offer panel mount capability in addition to through-hole mounting, providing mechanical design flexibility. Electrically, both product families meet the 9-position D-Sub DE/E shell specification with equivalent contact materials and finishes.

Q: Are NorComp 172 series parts suitable for high-temperature applications?

A: NorComp 172 series parts specify -50°C to 100°C operating temperature range, which is 25°C below the L777SDEG09POL2RM8 upper limit of 125°C. These parts are unsuitable for applications exceeding 100°C sustained operation. However, applications with operating limits of 100°C or lower can implement NorComp parts without thermal derating.

Q: Why do some substitutes show no voltage rating?

A: NorComp 172 series technical specifications do not provide discrete voltage rating values. These parts carry UL94 V-0 flammability certification and comply with D-Sub connector standards but do not publish explicit voltage ratings in the provided data. Engineering evaluation based on contact material (Brass), contact finish (Gold), and operating temperature is required for voltage capability assessment.

Q: What packaging formats are available for substitutes?

A: L777SDEG09POL2RM8 is supplied in Tray packaging. Substitutes are available in multiple formats: Tray (172 series, 172-009-112R001), Tube (1-747871-6, 2-748003-0, 5208006 series), and Bulk (1-747871-4). Tube and Tray formats are suitable for automated board assembly. Bulk format requires manual handling and is typically specified for low-volume prototyping or custom applications.

Q: Can RoHS non-compliant parts be used as substitutes?

A: RoHS non-compliant parts (1-747871-4, 2-748003-0) require explicit regulatory approval and compliance documentation for use in applications subject to Directive 2011/65/EU or equivalent environmental mandates. These parts are restricted to legacy design updates, military/aerospace applications with exemptions, or non-RoHS regulated markets. New product designs should specify RoHS Compliant alternatives (5208006-1, 5208006-2, or NorComp 172-E series).

Q: How does contact form (stamped vs. machined) affect substitutability?

A: Contact form does not prevent substitution. L777SDEG09POL2RM8 uses stamped contacts for cost efficiency and repeatability in high-volume applications. NorComp parts (172 series) employ machined contacts for superior dimensional tolerance and consistent spring characteristics. Both manufacturing methods provide equivalent electrical performance and mating force characteristics in D-Sub applications. Selection based on cost, lead time, and inventory availability is valid.

Q: What is the current inventory status for substitutes?

A: 5208006-2 shows the highest inventory at 1,000,200 pieces, providing optimal supply chain stability. Secondary options include 5208006-1 (7,877 pieces), 2-748003-0 (4,851 pieces), 172-E09-113R011 (2,415 pieces), and 1-747871-4 (1,793 pieces). Lowest inventory is 172-E09-113R021 (900 pieces). Lead time and procurement strategy should account for these inventory levels when selecting substitutes for high-volume builds.

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