DEM09P400 Equivalent & Substitute Parts

Part Overview

The DEM09P400 is a 9-position D-Sub plug connector with male pins, designed for panel mount through-hole applications. Manufactured by Amphenol ICC (FCI), this connector features wire wrap termination and is currently in active product status with 660 units in stock. The connector is constructed with steel shell (yellow cadmium plated) and gold-plated brass contacts, rated for 7.5A at 300V across an operating temperature range of -55°C to 125°C.

Substitute parts become necessary when the primary part reaches end-of-life status, inventory depletion, or when design requirements necessitate alternative sourcing options. The DEM09P400 has one identified equivalent substitute that maintains functional compatibility while offering different material specifications and compliance certifications.

Substiute Parts

DEM09P400

Amphenol ICC (FCI)In Stock: 699DEM09P400 Datasheet

Current PartRFQ

172-009-142R011

NorComp Inc.In Stock: 1247172-009-142R011 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DEM09P400 is determined by strict adherence to the following core parameters:

Critical Matching Parameters (Non-Negotiable):

• 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: Panel Mount, Through Hole
• Termination: Wire Wrap
• Contact Type: Signal
• Contact Material: Brass

Allowable Variation Parameters:

• Shell Material and Finish (Steel with different plating options)
• Contact Finish (Gold with different thickness specifications)
• Current Rating (substitute may have lower rating; 5A is acceptable for 7.5A applications with design verification)
• Voltage Rating (substitute may have unspecified rating; 300V baseline applies)
• Operating Temperature Range (substitute range may be narrower; -50°C ~ 100°C is acceptable within specified limits)
• Flange Feature (Housing/Shell vs. Board Side mounting variations)
• Dielectric Material (Thermoplastic vs. PBT/Polyester)
• Product Status (Active to Obsolete transition acceptable for equivalent functionality)
• RoHS Compliance Status (non-compliant to compliant acceptable)

The substitute part 172-009-142R011 (NorComp Inc.) meets all critical matching parameters and represents a direct functional equivalent despite differences in material specifications and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Part (DEM09P400): The DEM09P400 remains the preferred selection for new designs and applications requiring active product status support. This connector is currently in production with established supply chain availability (660 units in stock). The higher current rating (7.5A) and extended operating temperature range (-55°C ~ 125°C) provide design margin for demanding applications. However, the RoHS non-compliant status may restrict use in regulated markets or applications with strict environmental compliance requirements.

Substitute Part (172-009-142R011): The 172-009-142R011 is suitable for applications where ROHS3 compliance is mandatory or where the primary part is unavailable. This substitute maintains mechanical and electrical compatibility through matching connector geometry, pin configuration, and termination method. The lower current rating (5A versus 7.5A) and narrower operating temperature range (-50°C ~ 100°C) require design verification to confirm adequacy for the intended application. The obsolete product status indicates limited future availability; this part should be selected only when primary sourcing is exhausted or compliance requirements necessitate the substitution.

Compliance Considerations: Selection between these parts depends on regulatory requirements. The DEM09P400 suits applications without RoHS mandates, while the 172-009-142R011 addresses ROHS3-compliant designs. Both parts share identical ECCN and HTSUS classifications, indicating equivalent export control and tariff treatment.

Frequently Asked Questions (FAQ)

Q: Can the 172-009-142R011 directly replace the DEM09P400 in existing designs?

A: Mechanical and pin-level compatibility is confirmed. The substitute maintains the same 9-position D-Sub configuration, panel mount through-hole design, and wire wrap termination. However, the lower current rating (5A vs. 7.5A) and narrower temperature range (-50°C ~ 100°C vs. -55°C ~ 125°C) require circuit-level verification to confirm the substitute meets application requirements.

Q: What are the material differences between these connectors?

A: The DEM09P400 uses yellow cadmium-plated steel shell with standard gold contact finish. The 172-009-142R011 uses tin-plated steel shell with flash gold contact finish and PBT/Polyester dielectric material instead of thermoplastic. Both maintain UL94 V-0 flammability rating and brass contact material.

Q: Why is the 172-009-142R011 marked as obsolete?

A: Obsolete status indicates the part is no longer in active production. This substitute should be selected only when the primary DEM09P400 is unavailable or when ROHS3 compliance is a design requirement. Inventory availability (1138 units) is currently sufficient, but future sourcing may become constrained.

Q: Are there electrical performance differences I should consider?

A: The primary electrical difference is the current rating: DEM09P400 is rated 7.5A while the 172-009-142R011 is rated 5A. The voltage rating for the substitute is not specified in available documentation. Applications operating near the 7.5A limit require design margin analysis before substitution.

Q: What is the impact of different shell plating on connector performance?

A: Yellow cadmium plating (DEM09P400) and tin plating (172-009-142R011) provide equivalent corrosion protection for standard environments. Selection depends on specific environmental exposure and RoHS compliance requirements. Both finishes are suitable for indoor industrial and commercial applications.

Q: Can I use the 172-009-142R011 in applications requiring the full -55°C ~ 125°C temperature range?

A: No. The 172-009-142R011 is rated only to -50°C ~ 100°C. Applications requiring operation below -50°C or above 100°C must use the DEM09P400 or identify an alternative part with matching temperature specifications.