DEML09PN D-Sub 9-Position Plug Connector Equivalent & Substitute Parts

Part Overview

The DEML09PN is a 9-position D-Sub plug connector manufactured by Amphenol ICC (FCI) in the DM HE508 series. This free-hanging, in-line connector features solder cup termination and is designed for signal applications requiring robust electrical performance. The part is currently active in production with 837 units in stock.

Substitute parts become necessary when the original DEML09PN is unavailable, when design requirements shift between free-hanging and panel-mount configurations, or when alternative compliance certifications are required for specific applications.

Substiute Parts

DEML09PN

Amphenol ICC (FCI)In Stock: 868DEML09PN Datasheet

Current PartRFQ

171-009-102L001

NorComp Inc.In Stock: 1366171-009-102L001 Datasheet

MFR RecommendedRFQ

171-009-103L001

NorComp Inc.In Stock: 1288171-009-103L001 Datasheet

MFR RecommendedRFQ

171-009-103L011

NorComp Inc.In Stock: 1289171-009-103L011 Datasheet

MFR RecommendedRFQ

171-009-103L021

NorComp Inc.In Stock: 3649171-009-103L021 Datasheet

MFR RecommendedRFQ

5-747904-2

TE Connectivity AMP ConnectorsIn Stock: 10002075-747904-2 Datasheet

MFR RecommendedRFQ

5-747904-5

TE Connectivity AMP ConnectorsIn Stock: 31535-747904-5 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Core Compatibility Requirements:

• Connector type: D-Sub Plug, Male Pins
• Number of positions: 9
• Shell size: 1 (DE, E)
• Termination method: Solder Cup
• Flammability rating: UL94 V-0

Configuration Variations Affecting Substitution:

• Mounting type (free-hanging vs. panel-mount)
• Flange feature type (cable-side vs. housing/shell)
• Current rating capacity
• Operating temperature range
• Compliance certifications (RoHS, REACH)

The substitute parts listed fall into two functional groups: free-hanging in-line connectors (5-747904-2) and panel-mount connectors (171-009 series variants). Panel-mount substitutes are applicable only when the design permits mounting configuration changes. The 5-747904-2 from TE Connectivity maintains the free-hanging configuration of the original DEML09PN.

Parameter Comparison

Engineering Selection Recommendations

For Free-Hanging In-Line Configuration:

The 5-747904-2 from TE Connectivity AMPLIMITE HD-20 series is the primary substitute for DEML09PN when maintaining the free-hanging mounting configuration. This part is currently active and ROHS3 compliant. However, the current rating is reduced to 3A per contact compared to the DEML09PN's 7.5A rating, and the maximum operating temperature is limited to 105°C versus 155°C. The voltage rating is also reduced to 250V. These parameter reductions must be evaluated against application requirements before selection.

For Panel-Mount Configuration (Design Modification Required):

The NorComp 171-009 series provides panel-mount alternatives when design changes permit this configuration modification. All active variants (171-009-103L001, 171-009-103L011, 171-009-103L021) are ROHS3 compliant and currently in production. The 171-009-102L001 is obsolete and should be avoided for new designs. Current rating across the NorComp series is 5A per contact, and operating temperature range is -50°C to 100°C. Flange feature differences (housing/shell unthreaded vs. cable-side 4-40) determine mechanical mounting compatibility.

Compliance Considerations:

All substitute parts listed are ROHS3 compliant, whereas the DEML09PN is RoHS non-compliant. This compliance difference may be mandatory for applications subject to RoHS regulations. The REACH status for TE Connectivity parts is vendor-undefined; NorComp parts are REACH unaffected.

Frequently Asked Questions (FAQ)

Q: Can the 5-747904-2 directly replace the DEML09PN in all applications?

A: The 5-747904-2 maintains the same free-hanging in-line mounting configuration and solder cup termination as the DEML09PN. However, the current rating is reduced from 7.5A to 3A per contact, the maximum operating temperature drops from 155°C to 105°C, and the voltage rating decreases from 300V to 250V. Substitution is valid only when the application requirements fall within these lower specifications.

Q: What is the difference between the NorComp 171-009-103L001, 171-009-103L011, and 171-009-103L021 variants?

A: All three parts are electrically and mechanically identical 9-position D-Sub panel-mount plugs with identical current ratings (5A), operating temperature ranges (-50°C to 100°C), and compliance certifications. The primary difference is the flange feature: 171-009-103L001 has an unthreaded housing/shell flange, while 171-009-103L011 and 171-009-103L021 both feature cable-side 4-40 flanges. Selection depends on the specific mechanical mounting requirements of the application.

Q: Why is the 171-009-102L001 listed if it is obsolete?

A: The 171-009-102L001 is included in the substitute list as a historical reference and for applications where existing inventory may still be available. For new designs and procurement, the active variants 171-009-103L001, 171-009-103L011, or 171-009-103L021 should be selected instead.

Q: Are there any compatibility issues when substituting between free-hanging and panel-mount configurations?

A: Free-hanging and panel-mount connectors are mechanically incompatible and require different PCB or chassis mounting designs. Substitution between these configurations is not a direct replacement and requires design modification. The mounting type must be selected based on the specific application's mechanical requirements.

Q: What compliance certifications should I verify before selecting a substitute?

A: All listed substitutes are UL94 V-0 rated for flammability. All substitute parts are ROHS3 compliant, whereas the DEML09PN is RoHS non-compliant. If RoHS compliance is required for your application, any of the listed substitutes are acceptable. For REACH compliance, NorComp parts are REACH unaffected; TE Connectivity's REACH status is vendor-undefined and should be confirmed with the manufacturer if REACH compliance is mandatory.