L777SDEG09POL2 D-Sub 9-Position Plug Connector: Equivalent & Substitute Parts

Part Overview

The L777SDEG09POL2 is a 9-position D-Sub plug connector manufactured by Amphenol ICC, featuring male pins, vertical solder termination, and board-side M3 flange mounting. This connector is classified as Active product status with RoHS compliance and operates across the industrial temperature range of -55°C to 125°C. Current inventory stands at 1108 pieces.

Substitute parts are identified when equivalent D-Sub 9-position plug connectors share the same core electrical and mechanical specifications: 9-position layout, 2-row configuration, male pin type, solder termination, shell size 1 (DE/E), signal contact type, UL94 V-0 flammability rating, and brass contacts with gold finish. Substitution becomes necessary when the primary part reaches end-of-life status, inventory depletion, or when alternative packaging or compliance requirements mandate component selection from qualified alternatives.

Key Parameters

Parameter	L777SDEG09POL2 Specification
Connector Type	D-Sub Plug, Male Pins
Number of Positions	9
Number of Rows	2
Shell Size / Layout	1 (DE, E)
Mounting Type	Through Hole
Flange Feature	Board Side (M3)
Termination Method	Solder
Shell Material / Finish	Steel, Tin Plated
Contact Material	Brass
Contact Finish	Gold (15.0µin / 0.38µm)
Current Rating	3A
Voltage Rating	250V
Operating Temperature	-55°C to 125°C
Material Flammability	UL94 V-0
RoHS Status	RoHS Compliant
Contact Type	Signal
Color	Black

Substitute Part Grouping Explanation

Substitute parts for the L777SDEG09POL2 are qualified based on strict electrical and mechanical parameter alignment. The following criteria determine substitution eligibility:

Core Compatibility Parameters:

Connector type: D-Sub plug with male pins
Position count: 9 positions in 2-row configuration
Shell size: 1 (DE/E layout)
Termination: Solder
Contact material: Brass with gold finish
Flammability rating: UL94 V-0
Contact type: Signal

Acceptable Variation Parameters:

Flange feature type (Board Side M3, Board Side 4-40, Mating Side Female Screwlock, Housing/Shell configurations)
Mounting type (Through Hole, Panel Mount Through Hole)
Shell material finish (Tin Plated, Nickel Plated)
Current rating (3A to 6A range acceptable for signal applications)
Voltage rating (125V to 250V range acceptable)
Operating temperature range (minimum -50°C to -55°C; maximum 100°C to 125°C acceptable)
Packaging format (Tray, Tube, Bulk)
Dielectric material composition (Thermoplastic, Thermoplastic Glass Filled, Polyamide, Polyester)
Product status (Active preferred; Obsolete acceptable if all other parameters match)
RoHS compliance status (both compliant and non-compliant variants listed for reference)

Non-Substitutable Variations:

Position count deviation from 9
Row configuration other than 2
Shell size other than 1 (DE/E)
Connector gender (female receptacles excluded)
Termination method other than solder
Contact material other than brass
Flammability rating below UL94 V-0

Parameter Comparison

Parameter	L777SDEG09POL2 (Amphenol ICC)	1-747871-4 (TE Connectivity)	1-747871-6 (TE Connectivity)	172-009-112R001 (NorComp)	172-E09-113R011 (NorComp)	172-E09-113R021 (NorComp)	172-E09-113R911 (NorComp)	2-748003-0 (TE Connectivity)	5208006-1 (TE Connectivity)	5208006-2 (TE Connectivity)
Connector Type	D-Sub Plug, Male Pins	D-Sub Plug, Male Pins	D-Sub Plug, Male Pins	D-Sub Plug, Male Pins	D-Sub Plug, Male Pins	D-Sub Plug, Male Pins	D-Sub Plug, Male Pins	D-Sub Plug, Male Pins	D-Sub Plug, Male Pins	D-Sub Plug, Male Pins
Number of Positions	9	9	9	9	9	9	9	9	9	9
Number of Rows	2	2	2	2	2	2	2	2	2	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)	1 (DE, E)
Mounting Type	Through Hole	Through Hole	Through Hole	Panel Mount, 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	Solder
Contact Material	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass
Contact Finish	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Current Rating (Amps)	3A	6A	6A	5A	5A	5A	5A	6A	6A	6A
Voltage Rating	250V	125V	125V	Not Specified	Not Specified	Not Specified	Not Specified	125V	125V	125V
Operating Temperature	-55°C to 125°C	-55°C to 105°C	-55°C to 105°C	-50°C to 100°C	-50°C to 100°C	-50°C to 100°C	-50°C to 100°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C
Material Flammability	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 Type	Signal	Signal	Signal	Signal	Signal	Signal	Signal	Signal	Signal	Signal
Color	Black	Black	Black	Beige	White	White	White	Black	Black	Black
Product Status	Active	Active	Active	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	RoHS Compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	RoHS Compliant	RoHS Compliant
Packaging	Tray	Bulk	Tube	Tray	Tray	Tray	Tray	Tube	Tube	Tube
Inventory (Pcs)	1108	1793	1773	3362	2415	900	1938	4851	7877	1000200

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

The TE Connectivity AMPLIMITE HD-20 series parts 5208006-1 and 5208006-2 represent the closest functional equivalents to the L777SDEG09POL2. Both maintain RoHS compliance status, active product status, identical 9-position 2-row D-Sub plug configuration, solder termination, brass gold-plated contacts, and UL94 V-0 flammability rating. The 5208006-1 carries RoHS Compliant certification with REACH Unaffected status, while 5208006-2 maintains RoHS Compliant status with vendor-undefined REACH classification. Both operate at -55°C to 105°C, providing acceptable temperature range coverage for most industrial applications, though the upper limit is 20°C below the primary part specification. Current rating of 6A exceeds the primary part's 3A specification, providing design margin. Voltage rating of 125V is lower than the primary part's 250V specification; applications requiring 250V operation must retain the L777SDEG09POL2.

Secondary Substitutes (Acceptable with Design Review):

The TE Connectivity part 2-748003-0 (AMPLIMITE HD-20 series) provides equivalent electrical performance with 6A current rating and 125V voltage rating. This part features board lock and grounding indents, matching the primary part's feature set. However, RoHS non-compliant status and REACH Affected classification require compliance verification before deployment in regulated applications.

The NorComp 172-E series parts (172-E09-113R011, 172-E09-113R021, 172-E09-113R911) maintain active product status, ROHS3 compliance, and REACH Unaffected certification. All three feature panel mount through-hole capability with board-side 4-40 flange mounting. Operating temperature range of -50°C to 100°C is narrower than the primary part. Current rating of 5A and unspecified voltage rating require application-level verification. The 172-E09-113R911 variant includes board lock and dual flange features (board side and mating side female screwlock).

Conditional Substitutes (Limited Scope):

The TE Connectivity part 1-747871-4 and 1-747871-6 (AMPLIMITE HD-20 series) offer 6A current rating and active product status. Part 1-747871-6 carries ROHS3 compliance and REACH Unaffected status, making it suitable for regulated applications. Part 1-747871-4 is RoHS non-compliant and REACH Affected. Both feature mating-side female screwlock (4-40) rather than board-side flange, requiring mechanical design accommodation. Operating temperature maximum of 105°C and voltage rating of 125V represent specification reductions.

The NorComp part 172-009-112R001 carries obsolete product status and should be avoided for new designs. Beige color differs from the primary part's black specification. Operating temperature range of -50°C to 100°C and unspecified voltage rating require application verification.

Compliance Considerations:

For applications requiring RoHS compliance, select from: L777SDEG09POL2 (primary), 5208006-1, 5208006-2, 1-747871-6, 172-009-112R001, 172-E09-113R011, 172-E09-113R021, or 172-E09-113R911.

For applications with REACH Unaffected requirement, select from: 5208006-1, 1-747871-6, 172-009-112R001, 172-E09-113R011, 172-E09-113R021, or 172-E09-113R911.

For applications requiring 250V operation, the L777SDEG09POL2 is the only qualified option among listed parts.

For applications requiring -55°C to 125°C full temperature range, the L777SDEG09POL2 is the only qualified option among listed parts.

Frequently Asked Questions (FAQ)

Q: Can I substitute 5208006-1 for L777SDEG09POL2 in all applications?

A: The 5208006-1 is electrically and mechanically compatible for most signal applications. However, verify two critical parameters: (1) Operating temperature requirement—if your application requires operation above 105°C, the L777SDEG09POL2 is required; (2) Voltage requirement—if your application requires 250V operation, the L777SDEG09POL2 is required. The 5208006-1 is rated for 125V maximum. For all other signal applications within -55°C to 105°C and ≤125V, the 5208006-1 is a direct substitute.

Q: What is the difference between the NorComp 172-E series variants?

A: All three NorComp 172-E variants (172-E09-113R011, 172-E09-113R021, 172-E09-113R911) share identical electrical specifications: 9-position D-Sub plug, 5A current rating, -50°C to 100°C operating range, and ROHS3 compliance. The primary difference is flange configuration: 172-E09-113R011 and 172-E09-113R021 feature board-side 4-40 flange only; 172-E09-113R911 includes both board-side 4-40 and mating-side female screwlock 4-40 flanges, plus board lock feature. Select 172-E09-113R911 if dual-flange or board lock functionality is required.

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

A: The L777SDEG09POL2 is rated for 250V operation, while most TE Connectivity AMPLIMITE HD-20 series substitutes are rated for 125V. This reflects different design specifications and dielectric material selections. For applications operating at voltages between 125V and 250V, the L777SDEG09POL2 must be retained. For applications operating at ≤125V, the substitute parts are fully qualified.

Q: Is the 172-009-112R001 (NorComp) suitable for new designs?

A: The 172-009-112R001 carries obsolete product status and should not be selected for new designs. Although it meets core electrical and mechanical compatibility criteria, obsolete classification indicates manufacturer discontinuation and potential future supply unavailability. Select active-status alternatives such as the 172-E09 series variants instead.

Q: What packaging options are available for D-Sub 9-position plug substitutes?

A: Substitute parts are available in three packaging formats: Tray (L777SDEG09POL2, NorComp 172 series), Tube (1-747871-6, 2-748003-0, 5208006-1, 5208006-2), and Bulk (1-747871-4). Packaging selection depends on procurement volume and handling requirements. Tray packaging is standard for moderate volumes; tube packaging accommodates automated assembly; bulk packaging is used for high-volume orders.

Q: Can I use a substitute part with higher current rating than my application requires?

A: Yes. A substitute part with higher current rating (e.g., 6A substitute for 3A application) is acceptable and provides design margin. The connector will operate safely at lower current levels. However, verify that all other electrical parameters (voltage, temperature, flammability) meet or exceed application requirements.

Q: What is the significance of RoHS and REACH compliance status?

A: RoHS (Restriction of Hazardous Substances) compliance indicates the connector contains no lead, cadmium, hexavalent chromium, or other restricted substances. REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) compliance indicates the manufacturer has registered all chemical substances in the connector with European authorities. For applications subject to EU regulations or customer requirements mandating RoHS/REACH compliance, select parts explicitly marked as RoHS Compliant or ROHS3 Compliant with REACH Unaffected or REACH Compliant status. The L777SDEG09POL2 meets both requirements.

Q: Are there any mechanical mounting differences between the primary part and substitutes?

A: The L777SDEG09POL2 features board-side M3 flange mounting for through-hole PCB assembly. Most TE Connectivity substitutes (1-747871-4, 1-747871-6, 2-748003-0, 5208006-1, 5208006-2) use housing/shell or board-side 4-40 flange configurations, which are mechanically compatible with standard D-Sub mounting patterns. NorComp 172-E series parts support both panel mount and through-hole configurations with board-side 4-40 flanges. Verify PCB mounting hole patterns and flange screw specifications before final part selection.

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