L777DFEG09POL2RM5

Part Overview

The L777DFEG09POL2RM5 is a 9-position D-Sub plug connector manufactured by Amphenol ICC (Commercial Products), designed for panel-mount, through-hole applications with solder termination. This connector features male pins, tin-plated steel shell with gold-plated contacts, and is rated for 7.5A at 300V. The product is currently active in production. Alternative models become necessary when specific mounting configurations, flange features, operating temperature ranges, or compliance requirements differ from the original specification.

Key Parameters

Parameter	L777DFEG09POL2RM5
Number of Positions	9
Connector Type	Plug, Male Pins
Shell Size	1 (DE, E)
Mounting Type	Panel Mount, Through Hole
Flange Feature	Board Side (M3)
Termination	Solder
Current Rating	7.5A
Voltage Rating	300V
Operating Temperature	-55°C to 155°C
Shell Material/Finish	Steel, Tin Plated
Contact Finish	Gold, 30.0µin (0.76µm)
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitute parts for the L777DFEG09POL2RM5 are categorized based on compatibility with the following key parameters:

Core Compatibility Criteria:

9-position D-Sub connector configuration (2 rows)
Plug with male pins
Shell size 1 (DE, E)
Solder termination
Steel shell with gold-plated contacts
UL94 V-0 flammability rating
Brass contact material
Black or compatible color finish

Substitutes are grouped into two categories:

Group 1: Panel-Mount Alternatives (Through Hole) Parts 172-009-112R001, 172-E09-113R011, 172-E09-113R021, and 172-E09-113R911 are NorComp Inc. panel-mount connectors with board-side flange features. These maintain the panel-mount through-hole configuration but differ in flange design, operating temperature range, and current rating.

Group 2: Vertical-Mount Alternatives (Through Hole) Parts 1-5747871-3, 1-5747871-4, 1-5747871-6, 1-747871-4, 1-747871-6, and 2-5748003-0 are TE Connectivity AMPLIMITE HD-20 series connectors designed for vertical board mounting. These feature mating-side female screwlock or housing-shell flanges instead of board-side flanges.

Parameter Comparison

Parameter	L777DFEG09POL2RM5	172-009-112R001	172-E09-113R011	172-E09-113R021	172-E09-113R911	1-5747871-3	1-5747871-4	1-5747871-6	1-747871-4	1-747871-6	2-5748003-0
Number of Positions	9	9	9	9	9	9	9	9	9	9	9
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	Plug, Male Pins	Plug, Male Pins
Shell Size	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	Panel Mount, Through Hole	Panel Mount, Through Hole	Panel Mount, Through Hole	Panel Mount, Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Shell Material/Finish	Steel, Tin Plated	Steel, Tin Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated
Contact Finish	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Current Rating (Amps)	7.5A	5A	5A	5A	5A	6A	6A	6A	6A	6A	6A
Voltage Rating	300V	Not Specified	Not Specified	Not Specified	Not Specified	125V	125V	125V	125V	125V	125V
Operating Temperature	-55°C to 155°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	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C
Contact Material	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass
Flange Feature	Board Side (M3)	Housing/Shell (Unthreaded)	Board Side (4-40)	Board Side (4-40)	Board Side (4-40), Mating Side, Female Screwlock (4-40)	Mating Side, Female Screwlock (4-40)	Mating Side, Female Screwlock (4-40)	Mating Side, Female Screwlock (4-40)	Mating Side, Female Screwlock (4-40)	Mating Side, Female Screwlock (4-40)	Housing/Shell (4-40)
Product Status	Active	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Panel-Mount Applications Requiring Active Product Status: Parts 172-E09-113R011, 172-E09-113R021, and 172-E09-113R911 from NorComp Inc. are active panel-mount alternatives. All three are ROHS3 compliant and REACH unaffected. Part 172-E09-113R911 provides dual flange features (board side and mating side screwlock), offering flexibility in mounting configurations. Selection depends on whether dual flange capability is required.

For Vertical Board-Mount Applications: TE Connectivity AMPLIMITE HD-20 series parts (1-5747871-3, 1-5747871-4, 1-5747871-6, 1-747871-4, 1-747871-6) are active alternatives for through-hole vertical mounting. Parts 1-5747871-3, 1-5747871-4, and 1-5747871-6 are ROHS3 compliant, while 1-747871-6 is also ROHS3 compliant. Part 1-747871-4 is RoHS non-compliant and should be avoided for new designs requiring RoHS compliance.

For Enhanced Flange Mounting: Part 2-5748003-0 (TE Connectivity AMPLIMITE HD-20) provides a housing-shell 4-40 flange with board lock and grounding indents, matching the original part's board lock feature. This part is ROHS3 compliant and REACH affected.

Compliance Considerations: All active substitute parts maintain UL94 V-0 flammability rating and brass contact material. Current and voltage ratings vary between alternatives; verify application requirements before selection. The original part's 7.5A current rating exceeds all substitute options (5A to 6A maximum). Voltage rating of 300V on the original part exceeds most alternatives (125V maximum, NorComp parts unspecified). Operating temperature range of -55°C to 155°C on the original part exceeds all substitutes.

Frequently Asked Questions (FAQ)

Q: Can I use a TE Connectivity AMPLIMITE HD-20 vertical-mount connector as a direct replacement for the L777DFEG09POL2RM5 panel-mount connector? A: No. The L777DFEG09POL2RM5 is designed for panel-mount through-hole installation with a board-side M3 flange. TE Connectivity alternatives (1-5747871-3, 1-5747871-4, 1-5747871-6, 1-747871-4, 1-747871-6, 2-5748003-0) are vertical board-mount connectors with different flange configurations. These are suitable only if your design can accommodate vertical mounting instead of panel mounting.

Q: What is the difference between NorComp 172-E09-113R011 and 172-E09-113R911? A: Both are NorComp 172-E series panel-mount connectors with identical electrical ratings (5A, -50°C to 100°C). The primary difference is flange configuration: 172-E09-113R011 has a board-side 4-40 flange only, while 172-E09-113R911 includes both a board-side 4-40 flange and mating-side female screwlock 4-40, plus board lock and grounding indents for additional mechanical stability.

Q: Does the NorComp 172-009-112R001 meet current regulatory requirements? A: No. Part 172-009-112R001 is listed as obsolete. Although it is ROHS3 compliant and REACH unaffected, obsolete parts may have limited availability and supply chain risks. Active alternatives include other NorComp 172-E series parts or TE Connectivity AMPLIMITE HD-20 series.

Q: Are there current rating differences I should consider? A: Yes. The original L777DFEG09POL2RM5 is rated for 7.5A. All NorComp substitutes are rated for 5A, and all TE Connectivity AMPLIMITE HD-20 substitutes are rated for 6A. If your application requires the full 7.5A capacity, none of the listed substitute parts are compatible. Verify that your actual circuit current does not exceed the substitute part's rating.

Q: What voltage rating should I use for design calculations? A: The original part is rated for 300V. NorComp 172-series parts do not specify a voltage rating in the provided data. TE Connectivity AMPLIMITE HD-20 parts are rated for 125V. For high-voltage applications (above 125V), the NorComp 172-series or original Amphenol part are preferable, though NorComp voltage ratings are not specified and should be confirmed with the manufacturer.

Q: Can I use these connectors in applications requiring operation above 105°C? A: No. The original L777DFEG09POL2RM5 supports -55°C to 155°C operation. All listed substitute parts have lower maximum operating temperatures: NorComp 172-series parts support -50°C to 100°C, and TE Connectivity AMPLIMITE HD-20 parts support -55°C to 105°C. If your application requires operation above 105°C, these substitutes are not suitable.

Q: What packaging options are available for these connectors? A: The original part is supplied in tray packaging. Substitute parts are available in various packaging options: NorComp 172-series parts in trays; TE Connectivity AMPLIMITE HD-20 series in tubes (1-5747871-3, 1-5747871-4, 1-5747871-6, 1-747871-6) or bulk (1-747871-4). Verify packaging availability with your distributor for your volume requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message