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DEM09P743 D-Sub 9-Position Right Angle Solder Plug Connector
Part Overview
The DEM09P743 is a 9-position D-Sub plug connector manufactured by Amphenol ICC (FCI) in the DM series. This right-angle solder connector is designed for through-hole PCB mounting with male pins in a 2-row configuration. The connector features a steel shell with yellow cadmium plating, gold-plated contacts, and is rated for harsh environments with UL94 V-0 flammability compliance. The part is currently active in production with 808 units in stock.
Equivalent and substitute parts are necessary when the original DEM09P743 becomes unavailable, when alternative manufacturers are preferred for supply chain diversification, or when specific flange configurations are required for different mechanical mounting scenarios while maintaining electrical and functional compatibility.
Substiute Parts
Key Parameters
| Parameter | DEM09P743 Specification |
|---|---|
| Connector Style | D-Sub |
| Connector Type | Plug, Male Pins |
| Number of Positions | 9 |
| Number of Rows | 2 |
| Shell Size, Connector Layout | 1 (DE, E) |
| Mounting Type | Through Hole, Right Angle |
| Termination | Solder |
| Current Rating | 7.5A |
| Voltage Rating | 300V |
| Operating Temperature Range | -55°C to 125°C |
| Material Flammability Rating | UL94 V-0 |
| Backset Spacing | 0.318" (8.08mm) |
| Contact Finish | Gold |
| Shell Material, Finish | Steel, Yellow Cadmium Plated |
Substitute Part Grouping Explanation
Substitution eligibility for the DEM09P743 is determined by strict adherence to the following core parameters:
Critical Parameters (Must Match):
- Connector Style: D-Sub
- Connector Type: Plug, Male Pins
- Number of Positions: 9
- Number of Rows: 2
- Shell Size, Connector Layout: 1 (DE, E)
- Mounting Type: Through Hole, Right Angle
- Termination: Solder
- Backset Spacing: 0.318" (8.08mm)
- Material Flammability Rating: UL94 V-0
- Operating Temperature Range: -55°C to 125°C (minimum)
Allowable Variations:
- Current Rating: Substitute parts may have equal or higher current rating (DEM09P743 is 7.5A; substitutes range from 5A to 6.5A are acceptable if application does not exceed substitute rating)
- Voltage Rating: Substitute parts may have equal or higher voltage rating (DEM09P743 is 300V; substitutes with unspecified voltage are acceptable)
- Shell Material Finish: Steel with different plating options (Yellow Cadmium, Nickel, or unspecified)
- Contact Finish: Gold or Gold-Palladium
- Flange Feature: Housing/Shell configurations vary (Unthreaded, M3, 4-40, Mating Side Female Screwlock 4-40)
- Dielectric Material: Thermoplastic, PBT, or Polyamide variants
- Contact Material: Brass or Copper Alloy
- RoHS Status: Compliant or non-compliant variants acceptable
The substitute parts listed below maintain electrical and mechanical compatibility through matching core parameters while offering alternative flange mounting options and material specifications.
Parameter Comparison
| Parameter | DEM09P743 (Amphenol ICC) | 09681635811 (HARTING) | 09681635812 (HARTING) | 09681635813 (HARTING) | 09681637811 (HARTING) | 09681637813 (HARTING) | 182-009-113R161 (NorComp) | 182-009-113R171 (NorComp) | 182-009-113R531 (NorComp) | 182-009-113R561 (NorComp) | 5747250-2 (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 |
| 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 | Through Hole, Right Angle | Through Hole, Right Angle | Through Hole, Right Angle | Through Hole, Right Angle | Through Hole, Right Angle | Through Hole, Right Angle | Panel Mount, Through Hole, Right Angle | Panel Mount, Through Hole, Right Angle | Panel Mount, Through Hole, Right Angle | Panel Mount, Through Hole, Right Angle | Through Hole, Right Angle |
| Termination | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder | Solder |
| Current Rating (Amps) | 7.5A | 6.5A | 6.5A | 6.5A | 6.5A | 6.5A | 5A | 5A | 5A | 5A | 6A |
| Voltage Rating | 300V | — | — | — | — | — | — | — | — | — | 125V |
| Backset Spacing | 0.318" (8.08mm) | 0.318" (8.08mm) | 0.318" (8.08mm) | 0.318" (8.08mm) | 0.318" (8.08mm) | 0.318" (8.08mm) | 0.318" (8.08mm) | 0.318" (8.08mm) | 0.318" (8.08mm) | 0.318" (8.08mm) | 0.318" (8.08mm) |
| Operating Temperature Range | -55°C to 125°C | -55°C to 125°C | -55°C to 125°C | -55°C to 125°C | -55°C to 125°C | -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 |
| 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 Finish | Gold | Gold or Gold-Palladium | Gold or Gold-Palladium | Gold or Gold-Palladium | — | — | Gold | Gold | Gold | Gold | Gold |
| Shell Material, Finish | Steel, Yellow Cadmium Plated | Steel | Steel | Steel | Steel | Steel | Steel, Nickel Plated | Steel, Nickel Plated | Steel, Nickel Plated | Steel, Nickel Plated | Steel, Tin Plated |
| Flange Feature | Housing/Shell (Unthreaded) | Housing/Shell (M3) | Housing/Shell (4-40) | Mating Side, Female Screwlock (4-40) | Housing/Shell (M3) | Mating Side, Female Screwlock (4-40) | Housing/Shell (Unthreaded) | Housing/Shell (4-40) | Housing/Shell (4-40) | Mating Side, Female Screwlock (4-40) | Housing/Shell (Unthreaded) |
| Contact Material | Brass | Copper Alloy | Copper Alloy | Copper Alloy | Copper Alloy | Copper Alloy | Brass | Brass | Brass | Brass | Brass |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | RoHS Compliant |
Engineering Selection Recommendations
All listed substitute parts maintain core electrical and mechanical compatibility with the DEM09P743 through matching connector type, position count, shell size, mounting configuration, and termination method. Selection among substitutes depends on specific application requirements and regulatory constraints.
HARTING 09681635811, 09681635812, 09681635813, 09681637811, 09681637813: These parts are ROHS3 compliant and feature board lock and grounding indent features. Current rating is 6.5A, which is lower than the DEM09P743 (7.5A). Operating temperature range matches at -55°C to 125°C. Flange options include M3 housing, 4-40 housing, and mating side female screwlock configurations. These parts are suitable for applications requiring RoHS3 compliance and alternative flange mounting geometries.
NorComp 182-009-113R161, 182-009-113R171, 182-009-113R531, 182-009-113R561: These parts are ROHS3 compliant with nickel-plated steel shells and brass contacts. Current rating is 5A, which is lower than the DEM09P743. Operating temperature range is -55°C to 105°C, which is 20°C lower than the original part. These parts feature panel mount capability in addition to through-hole mounting and include ground strap and board lock options. Selection is appropriate for applications with lower current requirements and operating temperature limits.
TE Connectivity 5747250-2: This part is RoHS compliant and features a tin-plated steel shell with brass contacts. Current rating is 6A. Operating temperature range is -55°C to 105°C. Voltage rating is 125V, which is lower than the DEM09P743 (300V). This part includes ground strap and grounding indent features. Selection is appropriate for lower voltage applications with reduced operating temperature requirements.
For applications requiring the full 7.5A current rating and 300V voltage specification of the DEM09P743, HARTING parts with 6.5A rating represent the closest electrical match, though they remain below the original specification. NorComp and TE Connectivity parts with 5A and 6A ratings respectively are suitable only for applications with lower current demands.
Frequently Asked Questions (FAQ)
Q: Can I use a substitute part with a lower current rating than the DEM09P743?
A: Substitution with lower current rating is permissible only if your application current requirement does not exceed the substitute part's rating. The DEM09P743 is rated for 7.5A. HARTING substitutes are rated for 6.5A, NorComp parts for 5A, and TE Connectivity for 6A. Verify your circuit current draw before selecting a lower-rated substitute.
Q: What is the difference between the various HARTING flange options?
A: HARTING offers three flange configurations: Housing/Shell (M3) with M3 threaded mounting holes, Housing/Shell (4-40) with 4-40 threaded mounting holes, and Mating Side Female Screwlock (4-40) with screwlock coupling on the mating connector interface. The DEM09P743 features an unthreaded housing/shell flange. Select the flange configuration that matches your mechanical mounting requirements.
Q: Are NorComp parts suitable for high-temperature applications?
A: NorComp 182-009 series parts have an operating temperature range of -55°C to 105°C, which is 20°C lower than the DEM09P743 (-55°C to 125°C). These parts are not suitable for applications requiring operation above 105°C. For high-temperature applications, HARTING or TE Connectivity substitutes with -55°C to 125°C or -55°C to 105°C ranges should be evaluated based on specific temperature requirements.
Q: What is the difference between yellow cadmium plating and nickel plating on the shell?
A: The DEM09P743 features yellow cadmium plating on the steel shell. NorComp substitutes feature nickel plating, and HARTING substitutes feature unspecified steel finish or nickel plating. TE Connectivity features tin plating. These are different corrosion protection and environmental sealing methods. Shell plating selection depends on application environment and corrosion resistance requirements.
Q: Are all substitute parts RoHS compliant?
A: The DEM09P743 is RoHS non-compliant. All listed HARTING, NorComp, and TE Connectivity substitutes are RoHS3 or RoHS compliant. If your application requires RoHS compliance, any of the listed substitutes are acceptable. If RoHS compliance is not required, the original DEM09P743 remains available.
Q: Can I use a substitute part with a lower voltage rating?
A: The DEM09P743 is rated for 300V. TE Connectivity 5747250-2 is rated for 125V. HARTING and NorComp parts have unspecified voltage ratings. Substitution with lower voltage rating is permissible only if your application voltage does not exceed the substitute part's rating. Verify your circuit voltage before selecting a lower-rated substitute.
Q: What does "backset spacing" mean?
A: Backset spacing is the distance from the rear of the connector shell to the center line of the solder pins. All listed parts maintain 0.318" (8.08mm) backset spacing, ensuring PCB footprint compatibility with the DEM09P743.
Q: Are contact material differences between brass and copper alloy significant?
A: The DEM09P743 uses brass contacts. HARTING substitutes use copper alloy contacts. Both materials provide adequate electrical conductivity and contact reliability for D-Sub applications. Contact material selection does not affect electrical compatibility in standard signal applications.
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