DBMF25P D-Sub 25 Position Plug Connector

Part Overview

The DBMF25P is a 25 position D-Sub plug connector manufactured by Amphenol ICC (FCI) in the DM HE501 series. This connector features male pins with solder cup termination and is designed for free hanging in-line mounting applications. The part is currently active in production with 1031 units in stock.

Substitute parts become necessary when the original DBMF25P is unavailable, when design requirements shift to alternative mounting configurations, or when compliance specifications change. The primary substitute identified is the 172-E25-102R021 from NorComp Inc., which shares core electrical and mechanical compatibility while differing in mounting type and product status.

Substiute Parts

DBMF25P

Amphenol ICC (FCI)In Stock: 1055DBMF25P Datasheet

Current PartRFQ

172-E25-102R021

NorComp Inc.In Stock: 1146172-E25-102R021 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The 172-E25-102R021 qualifies as a substitute for the DBMF25P based on the following core parameters that determine electrical and mechanical compatibility:

Matching Parameters:

• Connector style: D-Sub
• Connector type: Plug, Male Pins
• Number of positions: 25
• Number of rows: 2
• Shell size and layout: 3 (DB, B)
• Termination method: Solder Cup
• Contact material: Brass
• Contact finish: Gold
• Material flammability rating: UL94 V-0
• Moisture sensitivity level: 1 (Unlimited)
• ECCN classification: EAR99
• HTSUS code: 8536.69.8000

Differing Parameters:

• Mounting type: DBMF25P uses free hanging in-line; 172-E25-102R021 uses panel mount
• Current rating: DBMF25P rated 7.5A; 172-E25-102R021 rated 5A
• Operating temperature: DBMF25P -55°C ~ 125°C; 172-E25-102R021 -50°C ~ 100°C
• Shell finish: DBMF25P uses yellow cadmium plated; 172-E25-102R021 uses tin plated
• Dielectric material: DBMF25P uses thermoplastic; 172-E25-102R021 uses PBT
• Product status: DBMF25P is active; 172-E25-102R021 is obsolete
• RoHS compliance: DBMF25P is non-compliant; 172-E25-102R021 is ROHS3 compliant

Parameter Comparison

Engineering Selection Recommendations

DBMF25P Selection Criteria:

• Primary choice for new designs requiring active product status and extended operating temperature range (-55°C to 125°C)
• Suitable for applications requiring 7.5A current capacity
• Appropriate for free hanging in-line mounting configurations
• Acceptable for applications where RoHS non-compliance is permissible

172-E25-102R021 Selection Criteria:

• Applicable only when panel mount configuration is required and mounting type substitution is acceptable
• Suitable for applications with maximum current requirements of 5A or less
• Appropriate for designs requiring ROHS3 compliance
• Limited to operating temperature range of -50°C to 100°C
• Not recommended for new designs due to obsolete product status

Substitution Feasibility: The 172-E25-102R021 can serve as a substitute only when the application permits panel mount installation instead of free hanging in-line mounting, and when current and temperature requirements do not exceed the substitute's ratings. The obsolete status of the 172-E25-102R021 restricts its use to legacy system maintenance or when alternative sourcing is unavailable.

Frequently Asked Questions (FAQ)

Q: Can the 172-E25-102R021 directly replace the DBMF25P in existing assemblies?

A: Direct replacement is not possible without mechanical redesign. The DBMF25P is configured for free hanging in-line mounting, while the 172-E25-102R021 requires panel mount installation. The connector footprints and mounting hardware differ between these configurations.

Q: What is the impact of the current rating difference between these parts?

A: The DBMF25P is rated for 7.5A while the 172-E25-102R021 is rated for 5A. If the application requires current capacity exceeding 5A, the 172-E25-102R021 cannot be used as a substitute.

Q: Does the operating temperature range difference affect substitution?

A: Yes. The DBMF25P operates from -55°C to 125°C, while the 172-E25-102R021 operates from -50°C to 100°C. Applications requiring operation below -50°C or above 100°C cannot use the 172-E25-102R021.

Q: Why is the 172-E25-102R021 listed as obsolete?

A: Obsolete status indicates the part is no longer in active production. While inventory may be available, long-term sourcing cannot be guaranteed. The DBMF25P is the recommended choice for new designs.

Q: Are there compliance implications when substituting between these parts?

A: Yes. The DBMF25P is RoHS non-compliant, while the 172-E25-102R021 is ROHS3 compliant. Applications subject to RoHS regulations must use the 172-E25-102R021 if compliance is required, provided other parameters are acceptable.

Q: What is the significance of the shell finish difference?

A: The DBMF25P uses yellow cadmium plating while the 172-E25-102R021 uses tin plating. These finishes provide different corrosion resistance characteristics and environmental performance. Selection depends on the specific environmental conditions of the application.

Q: Can both parts be used interchangeably in the same design?

A: No. The different mounting types (free hanging in-line versus panel mount) require distinct PCB layouts and mechanical assemblies. A design must be committed to one mounting configuration.