DEM09S743 D-Sub Receptacle Connector: Equivalent & Substitute Parts

Part Overview

The DEM09S743 is a 9-position D-Sub receptacle connector manufactured by Amphenol ICC (FCI) in the DM series. This through-hole, right-angle solder connector features female sockets with a DE/E shell size (1) and is designed for signal applications in harsh environments. The part is currently active in production with 1016 units in stock. Substitute parts are necessary when DEM09S743 availability is limited, when design requirements permit alternative contact materials or shell finishes, or when RoHS3 compliance is mandated for new designs.

Substiute Parts

DEM09S743

Amphenol ICC (FCI)In Stock: 1079DEM09S743 Datasheet

Current PartRFQ

173-E09-213R001

NorComp Inc.In Stock: 1292173-E09-213R001 Datasheet

MFR RecommendedRFQ

173-E09-213R141

NorComp Inc.In Stock: 835173-E09-213R141 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DEM09S743 is determined by strict equivalence in the following parameters:

• Connector Style & Type: Must be D-Sub receptacle with female sockets
• Position Count & Row Configuration: Must be 9 positions in 2 rows
• Shell Size: Must be size 1 (DE, E)
• Mounting & Termination: Must be through-hole, right-angle, solder termination
• Operating Temperature: Must support -55°C ~ 125°C range
• Flammability: Must meet UL94 V-0

The substitute parts 173-E09-213R001 and 173-E09-213R141 (both NorComp Inc.) satisfy all mandatory equivalence criteria. Differences in contact material (phosphor bronze vs. copper), shell finish (yellow cadmium plated vs. nickel plated), current rating (7.5A vs. 5A), backset spacing (0.318" vs. 0.283"), and RoHS compliance status are secondary variations that do not prevent functional substitution when application requirements permit.

Parameter Comparison

Engineering Selection Recommendations

DEM09S743 (Amphenol ICC) remains the primary choice for applications where RoHS non-compliance is acceptable and higher current capacity (7.5A) is required. This part is active in production with adequate inventory (1016 units).

173-E09-213R001 (NorComp) is suitable as a direct substitute when ROHS3 compliance is mandatory and the 5A current rating meets application requirements. This part provides equivalent mechanical and electrical function with nickel-plated steel shell finish and copper contacts. Inventory availability is strong (1216 units).

173-E09-213R141 (NorComp) is suitable as a substitute when ROHS3 compliance is required and the application benefits from integrated female screwlock mating-side fastening (4-40). This variant includes mounting brackets and is functionally equivalent to 173-E09-213R001 with the addition of the screwlock feature. Inventory is available (777 units).

Selection between NorComp substitutes depends on whether mating-side screwlock fastening is required. Both NorComp parts are REACH unaffected and carry ECCN EAR99 classification, matching the original part's export control status.

Frequently Asked Questions (FAQ)

Q: Can 173-E09-213R001 or 173-E09-213R141 be used as direct replacements for DEM09S743 in existing designs?

A: Both NorComp parts are mechanically and electrically compatible as D-Sub 9-position receptacles with identical shell size, position count, row configuration, and solder termination. However, backset spacing differs (0.318" vs. 0.283"), which may affect PCB layout compatibility. Verify PCB footprint tolerance before substitution.

Q: What is the significance of the current rating difference (7.5A vs. 5A)?

A: The DEM09S743 supports 7.5A per contact, while both NorComp substitutes support 5A per contact. Substitution is valid only if the application's current requirements do not exceed 5A per contact. For higher-current applications, the DEM09S743 is required.

Q: Why do the NorComp parts have different backset spacing?

A: Backset spacing (0.318" vs. 0.283") reflects design differences in connector geometry between manufacturers. This parameter affects the distance from the mating face to the solder tail and must be verified against PCB design specifications before substitution.

Q: What is the difference between 173-E09-213R001 and 173-E09-213R141?

A: Both parts are identical except for the flange feature. The 173-E09-213R141 includes a female screwlock (4-40) on the mating side and mounting brackets, providing integrated fastening capability. The 173-E09-213R001 has an unthreaded housing/shell. Select 173-E09-213R141 if screwlock mating is required; otherwise, 173-E09-213R001 is sufficient.

Q: Are the NorComp substitutes RoHS compliant?

A: Yes, both 173-E09-213R001 and 173-E09-213R141 are ROHS3 compliant. The original DEM09S743 is RoHS non-compliant. Substitution to NorComp parts is necessary for designs requiring RoHS3 compliance.

Q: What is the difference in contact material between DEM09S743 and the NorComp substitutes?

A: DEM09S743 uses phosphor bronze contacts, while both NorComp substitutes use copper contacts. Both materials are suitable for signal applications and support the operating temperature range of -55°C ~ 125°C. Contact finish (gold) is equivalent in both cases.

Q: Are there any export control restrictions on these parts?

A: All three parts carry ECCN EAR99 classification and are subject to standard export control regulations. No additional restrictions apply to the NorComp substitutes compared to the original DEM09S743.