DEML09P300 D-Sub 9 Position Plug Connector Equivalent & Substitute Parts

Part Overview

The DEML09P300 is a 9 position D-Sub plug connector manufactured by Amphenol ICC (FCI) in the DM HE501 series. This through-hole solder termination connector features male pins with gold-plated brass contacts and a cadmium-plated steel shell. The part is currently active in production with 882 units in stock.

Substitute parts are necessary when the original DEML09P300 becomes unavailable, when alternative packaging formats are required, or when design specifications allow for compatible alternatives from other manufacturers. Substitute connectors must maintain electrical and mechanical compatibility with the mating receptacle while meeting the same functional requirements.

Key Parameters

Parameter	Value
Connector Type	D-Sub Plug, Male Pins
Number of Positions	9
Shell Size / Layout	1 (DE, E)
Mounting Type	Through Hole
Termination Method	Solder
Contact Material	Brass
Contact Finish	Gold
Shell Material	Steel
Current Rating	7.5A
Operating Temperature Range	-55°C to 125°C
Dielectric Material	Thermoplastic, Glass Filled
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the DEML09P300 is determined by the following critical parameters:

Core Compatibility Requirements:

Connector type: D-Sub plug with male pins
Position count: 9 positions
Shell size and layout: 1 (DE, E)
Mounting method: Through hole
Termination: Solder
Contact material: Brass with gold finish

Acceptable Variations:

Shell finish (cadmium plated, tin plated, or nickel plated)
Flange feature configuration (housing/shell mounted or board/mating side mounted)
Dielectric material composition (thermoplastic variations)
Current rating (6A or 7.5A acceptable for signal applications)
Operating temperature range (minimum -55°C, maximum 100°C or higher)
Packaging format (tray, tube, or bulk)
RoHS compliance status

Non-Substitutable Parameters:

Connector style, type, and pin configuration
Position count and shell size
Solder termination requirement
Contact material and gold plating

The substitute parts listed below maintain all core compatibility requirements while offering variations in flange design, shell finish, and regulatory compliance.

Parameter Comparison

Parameter	DEML09P300	1-5747871-3	1-5747871-4	1-5747871-6	1-747871-4	1-747871-6	172-009-112R001	172-E09-113R011	172-E09-113R911	2-5748003-0	2-748003-0
Manufacturer	Amphenol ICC	TE Connectivity	TE Connectivity	TE Connectivity	TE Connectivity	TE Connectivity	NorComp Inc.	NorComp Inc.	NorComp Inc.	TE Connectivity	TE Connectivity
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
Number of Positions	9	9	9	9	9	9	9	9	9	9	9
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)	1 (DE, E)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Panel Mount, Through Hole	Panel Mount, Through Hole	Panel Mount, Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Contact Material	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Brass
Contact Finish	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Shell Material / Finish	Steel, Cadmium Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Tin Plated	Steel, Tin Plated
Current Rating (Amps)	7.5A	6A	6A	6A	6A	6A	5A	5A	5A	6A	6A
Operating Temperature	-55°C to 125°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	-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
Dielectric Material	Thermoplastic, Glass Filled	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	PBT, Polyester	Polyamide (PA6T), Nylon 6T	Polyamide (PA6T), Nylon 6T	Thermoplastic	Thermoplastic
Flange Feature	Housing/Shell (M3)	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 (Unthreaded)	Board Side (4-40)	Board Side (4-40), Mating Side, Female Screwlock (4-40)	Housing/Shell (4-40)	Housing/Shell (4-40)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	Not Applicable	Not Applicable	Not Applicable	1 (Unlimited)	1 (Unlimited)
Packaging	Tray	Tube	Tube	Tube	Bulk	Tube	Tray	Tray	Tray	Tray	Tube
Product Status	Active	Active	Active	Active	Active	Active	Obsolete	Active	Active	Active	Active
Inventory (Pcs)	882	4832	3029	3035	1793	1773	3362	2415	1938	4081	4851

Engineering Selection Recommendations

TE Connectivity AMPLIMITE HD-20 Series (1-5747871-3, 1-5747871-4, 1-5747871-6, 1-747871-4, 1-747871-6):

These connectors provide direct functional substitution with mating-side female screwlock features. Parts 1-5747871-3, 1-5747871-6, and 1-747871-6 carry ROHS3 compliance. Part 1-5747871-4 is RoHS compliant. Part 1-747871-4 is RoHS non-compliant. All operate at -55°C to 105°C with 6A current rating. The reduced current rating from 7.5A to 6A is acceptable for signal-level applications. Tin-plated steel shells provide corrosion resistance equivalent to cadmium plating. High inventory availability (1773 to 4832 units) ensures supply continuity.

TE Connectivity AMPLIMITE HD-20 Series with Board Lock (2-5748003-0, 2-748003-0):

These variants feature housing/shell-mounted flanges with board lock functionality. Part 2-5748003-0 is ROHS3 compliant; 2-748003-0 is RoHS non-compliant. Both provide 6A current rating and -55°C to 105°C operating range. The board lock feature adds mechanical retention on the PCB. Packaging options include tray (2-5748003-0) and tube (2-748003-0). Inventory levels are high (4081 and 4851 units respectively).

NorComp 172 Series (172-009-112R001, 172-E09-113R011, 172-E09-113R911):

NorComp connectors offer panel mount through-hole configurations with alternative flange designs. Part 172-009-112R001 is obsolete and not recommended for new designs. Parts 172-E09-113R011 and 172-E09-113R911 are active with ROHS3 compliance. These connectors feature nickel-plated steel shells and operate at -50°C to 100°C with 5A current rating. The reduced temperature range and current rating limit their use to applications with less demanding specifications. Part 172-E09-113R911 includes both board-side and mating-side locking features. Inventory availability is moderate (1938 to 2415 units).

Compliance Considerations:

For applications requiring RoHS3 compliance, select from: 1-5747871-3, 1-5747871-6, 1-747871-6, 2-5748003-0, 172-E09-113R011, or 172-E09-113R911.

For applications with no RoHS requirement, all listed substitutes are acceptable.

Current Rating Derating:

Applications requiring the full 7.5A rating of the DEML09P300 should not use substitute parts rated at 5A or 6A. Verify application current requirements before selection.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a lower current rating than the DEML09P300?

A: Substitutes with 6A or 5A ratings are acceptable only if your application current does not exceed the substitute part's rating. The DEML09P300 is rated for 7.5A; if your circuit draws more than 6A, use only the original part or verify the substitute's adequacy through thermal analysis.

Q: What is the difference between housing/shell-mounted and mating-side flanges?

A: Housing/shell-mounted flanges (DEML09P300, 2-5748003-0, 2-748003-0) attach to the connector body. Mating-side flanges (1-5747871 series) attach to the mating receptacle. Board-side flanges (172-E09 series) attach to the PCB. Flange location affects mechanical mounting and locking mechanism compatibility with your receptacle.

Q: Are cadmium-plated and tin-plated shells electrically equivalent?

A: Yes. Both provide corrosion protection and electrical shielding. Cadmium plating (DEML09P300) and tin plating (TE Connectivity substitutes) are functionally equivalent for signal transmission. Nickel plating (NorComp 172-E series) also provides equivalent shielding performance.

Q: Can I substitute a panel mount connector for a standard through-hole connector?

A: Panel mount connectors (NorComp 172 series) have different flange geometries and mounting hole patterns. They are not direct mechanical substitutes for standard through-hole connectors without PCB redesign. Use panel mount substitutes only if your PCB layout accommodates the panel mount flange configuration.

Q: What does "board lock" mean in the 2-5748003-0 and 2-748003-0 specifications?

A: Board lock is a mechanical feature that secures the connector to the PCB, preventing accidental disconnection during handling or vibration. This feature is present in 2-5748003-0 and 2-748003-0 but absent in the original DEML09P300. Board lock is optional and does not affect electrical compatibility.

Q: Which substitute offers the best RoHS compliance for new designs?

A: Parts 1-5747871-3, 1-5747871-6, 1-747871-6, 2-5748003-0, 172-E09-113R011, and 172-E09-113R911 all carry ROHS3 compliance. Among these, the TE Connectivity AMPLIMITE HD-20 series (1-5747871-3, 1-5747871-6, 1-747871-6) and 2-5748003-0 offer the closest electrical and mechanical match to the DEML09P300 with superior inventory availability.

Q: What is the difference between tube and tray packaging?

A: Tube packaging (1-5747871 series, 2-748003-0, 172-009-112R001) provides individual connector protection in a plastic tube, suitable for smaller quantities. Tray packaging (DEML09P300, 2-5748003-0, 172-E09 series) organizes connectors in a compartmented tray for higher-volume handling. Packaging does not affect connector performance; selection depends on procurement and assembly requirements.

Q: Can I use NorComp 172 series connectors as direct replacements?

A: NorComp 172 series connectors are mechanically and electrically compatible for mating with standard D-Sub 9-position receptacles. However, their reduced current rating (5A vs. 7.5A) and narrower operating temperature range (-50°C to 100°C vs. -55°C to 125°C) limit use to less demanding applications. Panel mount flange geometry also differs from the DEML09P300, requiring verification of PCB mounting compatibility.

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