DBM25P300 Equivalent & Substitute Parts

Part Overview

The DBM25P300 is a 25-position D-Sub plug connector manufactured by Amphenol ICC (FCI) with male pins, designed for through-hole solder termination. This connector operates across a temperature range of -55°C to 125°C with a current rating of 7.5A per contact and 300V voltage rating. The part is currently active in production with 913 units in stock.

Substitute parts are necessary when the original DBM25P300 becomes unavailable, when alternative compliance requirements must be met (such as RoHS3 compliance), or when specific flange features or contact finishes are required for particular application requirements.

Key Parameters

Parameter	DBM25P300 Specification
Connector Type	D-Sub Plug, Male Pins
Number of Positions	25
Number of Rows	2
Shell Size / Layout	3 (DB, B)
Mounting Type	Through Hole
Termination	Solder
Current Rating	7.5A per Contact
Voltage Rating	300V
Operating Temperature	-55°C to 125°C
Shell Material / Finish	Steel, Yellow Cadmium Plated
Contact Finish	Gold
Flange Feature	Housing/Shell (Unthreaded)
Material Flammability	UL94 V-0
RoHS Status	RoHS Non-Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the DBM25P300 is determined by the following critical parameters:

Core Compatibility Requirements:

Connector type: D-Sub Plug with Male Pins
Position count: 25 positions
Row configuration: 2 rows
Shell size: 3 (DB, B)
Mounting: Through Hole
Termination: Solder

Electrical Compatibility:

Current rating must equal or exceed 7.5A per contact (minimum requirement)
Voltage rating must equal or exceed 300V (minimum requirement)
Operating temperature range must encompass -55°C to 125°C or be compatible with application limits

Mechanical Compatibility:

Flange feature variations are acceptable when application mounting method permits
Contact finish variations (Gold, Tin) are acceptable for signal-level applications
Shell material finish variations are acceptable provided corrosion resistance meets application requirements

Compliance Considerations:

RoHS3 compliant substitutes are preferred for new designs but not mandatory for existing applications
All substitute parts maintain UL94 V-0 flammability rating
MSL 1 rating is consistent across all options

The substitute parts listed below meet the core compatibility requirements with variations in flange features, contact materials, and compliance certifications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Positions	Current Rating (A)	Voltage Rating (V)	Operating Temp (°C)	Shell Finish	Contact Finish	Flange Feature	RoHS Status	Product Status
DBM25P300	Amphenol ICC (FCI)	25	7.5	300	-55 to 125	Steel, Yellow Cadmium	Gold	Housing/Shell (Unthreaded)	Non-Compliant	Active
09643227210	HARTING	25	7.5	100	-20 to 125	Steel	—	Housing/Shell (Unthreaded)	ROHS3 Compliant	Active
09643227235	HARTING	25	7.5	100	-20 to 125	Steel	—	Board Side (4-40)	ROHS3 Compliant	Active
09653216703	HARTING	25	6.5	—	-55 to 125	Steel	—	Mating Side, Female Screwlock (4-40)	ROHS3 Compliant	Active
09653617713	HARTING	25	6.5	—	-55 to 125	Steel	—	Mating Side, Female Screwlock (4-40)	ROHS3 Compliant	Active
1-5745968-3	TE Connectivity AMP	25	6	125	-55 to 105	Steel, Tin Plated	Gold	Mating Side, Female Screwlock (4-40)	ROHS3 Compliant	Active
1-5745968-4	TE Connectivity AMP	25	6	125	-55 to 105	Steel, Tin Plated	Gold	Mating Side, Female Screwlock (4-40)	ROHS3 Compliant	Active
1-5745968-5	TE Connectivity AMP	25	6	125	-55 to 105	Steel, Tin Plated	Gold	Mating Side, Female Screwlock (4-40)	ROHS3 Compliant	Active
1-5745968-6	TE Connectivity AMP	25	6	125	-55 to 105	Steel, Tin Plated	Gold	Mating Side, Female Screwlock (4-40)	RoHS Compliant	Active
172-025-112R001	NorComp Inc.	25	5	—	-50 to 100	Steel, Tin Plated	Gold	Housing/Shell (Unthreaded)	ROHS3 Compliant	Obsolete
172-E25-113R001	NorComp Inc.	25	5	—	-50 to 100	Steel, Nickel Plated	Gold	Housing/Shell (Unthreaded)	ROHS3 Compliant	Active

Engineering Selection Recommendations

For Direct Replacement (Unthreaded Flange, No Mating-Side Locking):

The HARTING 09643227210 is the primary substitute when the unthreaded flange configuration must be maintained. This part is RoHS3 compliant and currently in active production with 801 units in stock. The voltage rating of 100V is lower than the original 300V specification; this substitution is valid only for applications operating at or below 100V. The operating temperature range of -20°C to 125°C is narrower than the original; applications requiring operation below -20°C must use alternative parts.

For Applications Requiring Extended Temperature Range (-55°C to 125°C):

The HARTING 09653216703 and 09653617713 maintain the full -55°C to 125°C operating range. Both feature mating-side female screwlock flanges and are RoHS3 compliant. The current rating of 6.5A is lower than the original 7.5A specification. These parts are suitable for applications where the lower current rating is acceptable and mating-side locking is compatible with the connector interface design.

For RoHS3 Compliance with Maintained Electrical Specifications:

The TE Connectivity AMPLIMITE HD-20 series (1-5745968-3, 1-5745968-4, 1-5745968-5, 1-5745968-6) provides RoHS3 compliance with gold-plated contacts and tin-plated steel shells. These parts operate at -55°C to 105°C, which covers the lower temperature extreme of the original but limits the upper temperature to 105°C. The current rating of 6A is lower than the original 7.5A. These parts feature mating-side female screwlock flanges and are suitable for applications where the reduced current and upper temperature limits are acceptable.

For Panel Mount Applications:

The NorComp 172-E25-113R001 is an active part supporting both panel mount and through-hole configurations with RoHS3 compliance. The current rating of 5A and operating range of -50°C to 100°C represent the most restrictive electrical and thermal specifications among available substitutes. This part is suitable only for applications with lower current requirements and moderate temperature ranges.

Compliance Status Summary:

All substitute parts except the original DBM25P300 are RoHS3 compliant. The original part is RoHS non-compliant. Selection of a RoHS3 compliant substitute is required for applications subject to RoHS3 regulations. All parts maintain UL94 V-0 flammability certification and MSL 1 moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can the HARTING 09643227210 directly replace the DBM25P300 in all applications?

A: The HARTING 09643227210 is mechanically and functionally compatible as a direct replacement for the unthreaded flange configuration. However, the voltage rating is 100V compared to the original 300V, and the operating temperature range is -20°C to 125°C compared to -55°C to 125°C. Substitution is valid only when the application operates within these reduced specifications.

Q: What is the difference between the TE Connectivity parts 1-5745968-3, 1-5745968-4, 1-5745968-5, and 1-5745968-6?

A: These four parts are electrically and mechanically identical. The differences are in packaging (all are Tube) and RoHS compliance documentation status. Parts 1-5745968-3, 1-5745968-5, and 1-5745968-6 are ROHS3 Compliant with confirmed REACH Unaffected status. Part 1-5745968-4 has Vendor Undefined REACH status. All four are suitable substitutes with identical electrical performance.

Q: Why do some substitute parts have lower current ratings than the original DBM25P300?

A: Current rating is determined by contact material, contact form (stamped vs. machined), and shell design. The HARTING and NorComp substitutes use different contact materials and forms, resulting in lower current ratings. Selection must ensure the substitute part's current rating meets or exceeds the application's actual current requirements.

Q: Are the HARTING parts with mating-side screwlock flanges compatible with the original unthreaded flange design?

A: No. The mating-side screwlock flange (4-40) is a different mechanical interface. These parts are suitable only for applications designed to accept mating-side locking connectors. The unthreaded flange variants (09643227210) must be used for applications requiring the original flange configuration.

Q: Which substitute part is recommended for new designs requiring RoHS3 compliance?

A: The HARTING 09643227210 is recommended for new designs requiring RoHS3 compliance with the unthreaded flange configuration, provided the application operates at or below 100V and above -20°C. For applications requiring the full -55°C to 125°C temperature range with RoHS3 compliance, the HARTING 09653216703 or 09653617713 are suitable alternatives with mating-side screwlock flanges.

Q: Is the NorComp 172-025-112R001 a viable substitute despite being marked Obsolete?

A: The NorComp 172-025-112R001 is marked Obsolete and should not be selected for new designs or long-term applications. The active alternative from NorComp is the 172-E25-113R001, which provides the same mechanical configuration with RoHS3 compliance and 1584 units currently in stock.

Q: What packaging options are available for these substitute parts?

A: The DBM25P300 is supplied in Tray packaging. Substitute parts are available in multiple packaging formats: HARTING parts in Bulk, TE Connectivity parts in Tube, and NorComp parts in Tray. Packaging selection should align with procurement and assembly requirements.

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