DBMF25PN D-Sub 25 Position Plug Connector Equivalent & Substitute Parts

Part Overview

The DBMF25PN is a 25 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 D-shaped connector architecture. The part maintains active product status with 1123 units in current inventory. Substitute parts are necessary to address supply chain flexibility, manufacturing discontinuation, or specific application requirements such as panel mount configurations or alternative shell finishes.

Substiute Parts

DBMF25PN

Amphenol ICC (FCI)In Stock: 1152DBMF25PN Datasheet

Current PartRFQ

171-025-102L031

NorComp Inc.In Stock: 824171-025-102L031 Datasheet

MFR RecommendedRFQ

171-025-103L001

NorComp Inc.In Stock: 9602171-025-103L001 Datasheet

MFR RecommendedRFQ

171-025-103L011

NorComp Inc.In Stock: 1489171-025-103L011 Datasheet

MFR RecommendedRFQ

L717SDB25P

Amphenol ICC (Commercial Products)In Stock: 3323L717SDB25P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DBMF25PN is determined by the following mandatory parameters:

• Connector Type: Must be Plug with Male Pins
• Number of Positions: Must be 25
• Shell Size: Must be 3 (DB, B)
• Termination: Must be Solder Cup
• Contact Type: Must be Signal

The four substitute parts listed (L717SDB25P, 171-025-103L001, 171-025-103L011, 171-025-102L031) satisfy these core requirements. However, they differ in secondary parameters including mounting type, shell finish, current rating, and operating temperature range. These differences establish distinct substitution scenarios based on application constraints.

Parameter Comparison

Engineering Selection Recommendations

L717SDB25P (Amphenol ICC Commercial Products)

This substitute maintains the free hanging, in-line mounting configuration of the DBMF25PN and shares the same manufacturer family. It is suitable for applications where mounting type compatibility is critical. However, the current rating is reduced to 3A and operating temperature range is limited to -55°C ~ 105°C. This part is RoHS compliant and carries active product status. Selection is appropriate when supply of DBMF25PN is constrained and application current requirements do not exceed 3A.

171-025-103L001 (NorComp Inc.)

This part transitions to panel mount configuration with a 5A current rating and -50°C ~ 100°C operating range. It features nickel plating on the steel shell and maintains active product status with ROHS3 compliance. This substitute is suitable for applications requiring panel mount integration where the reduced current and temperature specifications are acceptable.

171-025-103L011 (NorComp Inc.)

Functionally equivalent to 171-025-103L001 with identical electrical and thermal specifications. The distinction is the cable side flange feature (4-40) versus the housing/shell unthreaded feature of 171-025-103L001. This part maintains active status and ROHS3 compliance. Selection between 171-025-103L001 and 171-025-103L011 depends on specific flange mounting requirements.

171-025-102L031 (NorComp Inc.)

This part carries obsolete product status and is not recommended for new designs. While it shares panel mount configuration and 5A current rating with other NorComp substitutes, its discontinued status creates supply and support risk. This part is listed for reference only in legacy system maintenance scenarios.

Frequently Asked Questions (FAQ)

Q: Can L717SDB25P directly replace DBMF25PN in all applications?

A: L717SDB25P is electrically and mechanically compatible for the core connector function. However, the reduced current rating (3A versus 7.5A) and narrower operating temperature range (-55°C ~ 105°C versus -55°C ~ 155°C) require verification against application specifications. Mounting type remains compatible as both are free hanging, in-line configurations.

Q: What is the primary difference between the NorComp 171-025 series substitutes?

A: All three NorComp parts (171-025-103L001, 171-025-103L011, 171-025-102L031) share identical electrical specifications (5A current, -50°C ~ 100°C operating range) and panel mount configuration. The differences are flange features and product status. 171-025-103L001 and 171-025-103L011 differ only in flange location (housing/shell unthreaded versus cable side 4-40). 171-025-102L031 is obsolete.

Q: Why do the NorComp substitutes have lower current ratings than DBMF25PN?

A: Current rating is determined by contact design and material specifications. The NorComp 171 series is rated for 5A maximum, while the Amphenol DBMF25PN achieves 7.5A. This is a design characteristic of each product line and cannot be changed through substitution.

Q: Are all substitutes RoHS compliant?

A: No. DBMF25PN is RoHS non-compliant due to cadmium plating. L717SDB25P is RoHS compliant. All three NorComp parts (171-025-103L001, 171-025-103L011, 171-025-102L031) are ROHS3 compliant. Compliance requirements must be verified against application and regulatory standards.

Q: Can I use a panel mount substitute in a free hanging application?

A: Panel mount connectors (NorComp 171 series) are designed for fixed panel integration and are not suitable for free hanging, in-line applications. Mechanical mounting compatibility is required for proper connector function and reliability.

Q: What is the inventory status for each substitute?

A: L717SDB25P has 3285 units in stock. 171-025-103L001 has 9499 units. 171-025-103L011 has 1476 units. 171-025-102L031 has 747 units but is obsolete. Current inventory levels should be verified at time of procurement.