DBM25SN D-Sub 25 Position Receptacle Connector - Equivalent & Substitute Parts

Part Overview

The DBM25SN is a 25 position D-Sub receptacle connector manufactured by Amphenol ICC (FCI) with female sockets and solder cup termination. This connector is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system maintenance and component procurement. The DBM25SN serves applications requiring D-Sub connectivity with a 25-pin configuration in a 2-row layout, suitable for free-hanging inline mounting.

Key Parameters

Parameter	Value
Connector Style	D-Sub
Connector Type	Receptacle, Female Sockets
Number of Positions	25
Number of Rows	2
Shell Size, Connector Layout	3 (DB, B)
Mounting Type	Free Hanging (In-Line)
Termination	Solder Cup
Contact Type	Signal
Flange Feature	Housing/Shell (Unthreaded)
Current Rating (Amps)	7.5A per Contact
Voltage Rating	300V
Operating Temperature Range	-55°C ~ 155°C
Contact Form	Machined
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the DBM25SN must maintain functional equivalence across the following critical parameters:

Connector Style: D-Sub
Connector Type: Receptacle, Female Sockets
Number of Positions: 25
Number of Rows: 2
Shell Size, Connector Layout: 3 (DB, B)
Mounting Type: Free Hanging (In-Line)
Termination: Solder Cup
Contact Type: Signal
Flange Feature: Housing/Shell (Unthreaded)

The DBM25S from Cinch Connectivity Solutions satisfies all mandatory functional parameters for direct substitution. Both connectors share identical mechanical configuration, pin count, and mounting characteristics. Variations in secondary parameters such as shell finish material, contact material composition, current rating, and operating temperature range are documented in the parameter comparison table below.

Parameter Comparison

Parameter	DBM25SN (Amphenol ICC)	DBM25S (Cinch Connectivity)
Connector Style	D-Sub	D-Sub
Connector Type	Receptacle, Female Sockets	Receptacle, Female Sockets
Number of Positions	25	25
Number of Rows	2	2
Shell Size, Connector Layout	3 (DB, B)	3 (DB, B)
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)
Termination	Solder Cup	Solder Cup
Contact Type	Signal	Signal
Flange Feature	Housing/Shell (Unthreaded)	Housing/Shell (Unthreaded)
Shell Material, Finish	Steel, Yellow Cadmium Plated	Steel, Yellow Chromate Plated Zinc
Contact Finish	Gold	Gold
Contact Finish Thickness	Not specified	30.0µin (0.76µm)
Current Rating (Amps)	7.5A per Contact	5A per Contact
Voltage Rating	300V	Not specified
Operating Temperature Range	-55°C ~ 155°C	-65°C ~ 125°C
Contact Form	Machined	Machined
Contact Material	Brass	Phosphor Bronze
Dielectric Material	Thermoplastic	Diallyl Phthalate (DAP), Glass Filled
Material Flammability Rating	UL94 V-0	UL94 V-0
RoHS Status	RoHS non-compliant	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active

Engineering Selection Recommendations

The DBM25S from Cinch Connectivity Solutions is the designated substitute for the obsolete DBM25SN. Both connectors maintain identical mechanical and electrical interface specifications, ensuring direct pin-for-pin compatibility in existing applications.

The DBM25S offers the advantage of active product status, ensuring continued availability and supply chain reliability compared to the obsolete DBM25SN. Both parts carry identical flammability certification (UL94 V-0) and moisture sensitivity classification (MSL 1), meeting the same environmental and safety requirements.

Applications operating at the maximum current rating of the DBM25SN (7.5A per contact) should account for the DBM25S current rating of 5A per contact. Applications requiring the full operating temperature range of the DBM25SN (-55°C to 155°C) should verify compatibility with the DBM25S operating range (-65°C to 125°C). Both parts maintain RoHS non-compliant status, consistent with legacy connector specifications.

Frequently Asked Questions (FAQ)

Q: Can DBM25S be used as a direct replacement for DBM25SN?

A: Yes. Both connectors share identical mechanical configuration, pin count (25 positions), row layout (2 rows), shell size (3/DB/B), mounting type (free hanging inline), termination method (solder cup), and contact type (signal). The connectors are mechanically and electrically interchangeable at the interface level.

Q: What are the differences between DBM25SN and DBM25S?

A: The primary differences are: (1) Product status—DBM25SN is obsolete while DBM25S is active; (2) Current rating—DBM25SN is rated 7.5A per contact while DBM25S is rated 5A per contact; (3) Operating temperature range—DBM25SN operates -55°C to 155°C while DBM25S operates -65°C to 125°C; (4) Shell finish—DBM25SN uses yellow cadmium plating while DBM25S uses yellow chromate plating on zinc; (5) Contact material—DBM25SN uses brass while DBM25S uses phosphor bronze; (6) Dielectric material—DBM25SN uses thermoplastic while DBM25S uses glass-filled DAP.

Q: Are there packaging differences between these connectors?

A: The DBM25SN packaging information is not specified in the available data. The DBM25S is supplied in bulk packaging. Confirm packaging requirements with the supplier for your specific application needs.

Q: Do both connectors meet the same compliance standards?

A: Yes. Both connectors carry UL94 V-0 flammability certification and MSL 1 (unlimited moisture sensitivity level) classification. Both are RoHS non-compliant, consistent with legacy D-Sub connector specifications.

Q: Which connector should be selected for new designs?

A: The DBM25S should be selected for new designs due to its active product status, ensuring long-term availability and supply chain continuity. The DBM25SN, being obsolete, is suitable only for replacement and maintenance applications where existing inventory or legacy system compatibility is required.

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