DBM25S500C D-Sub 25 Position Receptacle Equivalent & Substitute Parts

Part Overview

The DBM25S500C is a 25 position D-Sub receptacle connector manufactured by Amphenol ICC (FCI) in the DM HE501 series. This right-angle, through-hole solder termination connector features female sockets with gold-plated phosphor bronze contacts rated for 7.5A per contact at 300V. The connector is housed in a yellow cadmium-plated steel shell with UL94 V-0 flammability rating and operates across -55°C to 125°C.

The part is currently active in production with 1018 units in stock. Equivalent and substitute parts are identified for applications requiring alternative sourcing, compliance certifications, or specific mounting configurations while maintaining core D-Sub 25 position receptacle functionality.

Key Parameters

Parameter	DBM25S500C
Connector Type	Receptacle, Female Sockets
Number of Positions	25
Number of Rows	2
Shell Size, Connector Layout	3 (DB, B)
Mounting Type	Through Hole, Right Angle
Termination	Solder
Shell Material, Finish	Steel, Yellow Cadmium Plated
Contact Finish	Gold
Current Rating	7.5A per Contact
Voltage Rating	300V
Operating Temperature	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution eligibility for the DBM25S500C is determined by the following core parameters that must remain constant across all alternatives:

Fixed Parameters (Non-Negotiable):

Connector type: Receptacle, Female Sockets
Number of positions: 25
Number of rows: 2
Shell size and layout: 3 (DB, B)
Mounting type: Through Hole, Right Angle
Termination method: Solder
Contact finish: Gold
Material flammability rating: UL94 V-0

Variable Parameters (Allowed Substitution Range):

Shell material and finish (steel with various plating options)
Current rating (7.5A down to 3A acceptable for lower-current applications)
Voltage rating (300V down to 125V acceptable for lower-voltage applications)
Operating temperature range (125°C down to 85°C acceptable for reduced-temperature applications)
Flange feature configuration (housing/shell vs. mating side screwlock)
Contact material (phosphor bronze maintained across all alternatives)
RoHS compliance status (compliant and non-compliant options available)
Packaging format (tray or bulk)

Substitute parts are grouped by manufacturer and series, with compatibility confirmed through matching core D-Sub 25 position receptacle specifications.

Parameter Comparison

Parameter	DBM25S500C (Amphenol ICC)	182-025-213R531 (NorComp)	5788800-2 (TE Connectivity)	5788801-2 (TE Connectivity)	747846-3 (TE Connectivity)	747846-4 (TE Connectivity)	747846-6 (TE Connectivity)	788800-1 (TE Connectivity)	RDBD-25S-LNA(55) (Hirose)	RDBD-25SE-LN(55) (Hirose)	RDBD-25SE1/M2.6(55) (Hirose)
Connector Type	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets
Number of Positions	25	25	25	25	25	25	25	25	25	25	25
Number of Rows	2	2	2	2	2	2	2	2	2	2	2
Shell Size, Connector Layout	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)
Mounting Type	Through Hole, Right Angle	Panel Mount, Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Panel Mount, Through Hole, Right Angle	Panel Mount, Through Hole, Right Angle	Panel Mount, Through Hole, Right Angle
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Shell Material, Finish	Steel, Yellow Cadmium Plated	Steel, Nickel Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated
Contact Finish	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Current Rating (Amps)	7.5A per Contact	5A	6A	6A	6A	6A	6A	6A	3A	3A	3A
Voltage Rating	300V	Not Specified	125V	125V	125V	125V	125V	125V	350V	350V	350V
Operating Temperature	-55°C ~ 125°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 85°C	-55°C ~ 85°C	-55°C ~ 85°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	RoHS non-compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant	RoHS Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant
Contact Material	Phosphor Bronze	Not Specified	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze

Engineering Selection Recommendations

For RoHS Compliance Requirements: Select 182-025-213R531 (NorComp ROHS3 Compliant), 5788800-2 (TE Connectivity RoHS Compliant), 5788801-2 (TE Connectivity RoHS Compliant), 788800-1 (TE Connectivity RoHS Compliant), RDBD-25S-LNA(55) (Hirose ROHS3 Compliant), RDBD-25SE-LN(55) (Hirose RoHS Compliant), or RDBD-25SE1/M2.6(55) (Hirose RoHS Compliant). These parts meet modern environmental compliance standards while maintaining D-Sub 25 position receptacle functionality.

For Maximum Current Capacity: The DBM25S500C at 7.5A per contact exceeds all listed substitutes. TE Connectivity AMPLIMITE HD-20 series (5788800-2, 5788801-2, 747846-3, 747846-4, 747846-6, 788800-1) provide 6A per contact, suitable for applications not requiring the full 7.5A rating. NorComp 182-025-213R531 provides 5A per contact. Hirose RD*D series (RDBD-25S-LNA(55), RDBD-25SE-LN(55), RDBD-25SE1/M2.6(55)) provide 3A per contact for lower-current signal applications.

For Extended Temperature Operation: The DBM25S500C operates to 125°C. All TE Connectivity and NorComp substitutes operate to 105°C maximum. Hirose RD*D series operates to 85°C maximum. Select DBM25S500C or equivalent Amphenol ICC parts for applications requiring operation above 105°C.

For Voltage Rating Considerations: The DBM25S500C is rated 300V. Hirose RD*D series provides 350V rating, suitable for higher-voltage applications. TE Connectivity and NorComp substitutes are rated 125V or unspecified, appropriate for standard signal-level applications.

For Flange Configuration: DBM25S500C features housing/shell (unthreaded) flange. Substitutes with matching housing/shell configuration: 182-025-213R531, 5788800-2, 747846-3, 747846-4, 788800-1, RDBD-25SE-LN(55), RDBD-25SE1/M2.6(55). Substitutes with mating side female screwlock: 5788801-2, 747846-6, RDBD-25S-LNA(55).

For Active Production Status: All listed substitutes maintain active production status except RDBD-25SE-LN(55), which is Last Time Buy. Confirm availability for long-term supply chain requirements.

Frequently Asked Questions (FAQ)

Q: Can I substitute a Hirose RD*D series connector for the DBM25S500C in a high-current application?

A: No. Hirose RD*D series connectors are rated 3A per contact, while DBM25S500C is rated 7.5A per contact. Hirose parts are suitable only for signal-level applications. For applications requiring 6A or higher current capacity, select TE Connectivity AMPLIMITE HD-20 series (6A rating) or maintain the original DBM25S500C.

Q: What is the difference between housing/shell flange and mating side female screwlock configurations?

A: Housing/shell flange (unthreaded) provides a standard D-Sub mounting interface without threaded fasteners. Mating side female screwlock (4-40 or M2.6) includes threaded holes on the connector mating face for screw-locking cable connectors. Select based on your mating connector type and mechanical assembly requirements.

Q: Are all substitute parts compatible with the same PCB footprint as DBM25S500C?

A: All listed substitutes maintain 25 position, 2-row D-Sub 3 (DB, B) shell size with through-hole right-angle mounting. However, backset spacing varies: DBM25S500C uses 0.406" (10.30mm), while most TE Connectivity and NorComp substitutes use 0.318" (8.08mm). Hirose parts do not specify backset spacing. Verify PCB layout compatibility before substitution.

Q: Which substitute offers the best RoHS compliance for new designs?

A: ROHS3 compliant options are 182-025-213R531 (NorComp) and RDBD-25S-LNA(55) (Hirose). RoHS compliant options include 5788800-2, 5788801-2, 788800-1 (TE Connectivity), RDBD-25SE-LN(55), and RDBD-25SE1/M2.6(55) (Hirose). Select based on your specific RoHS compliance requirement level and supply chain preference.

Q: Can I use a substitute with lower current rating if my application only requires 3A?

A: Yes. If your application current requirement is 3A or less, Hirose RD*D series (3A rating) are suitable substitutes. Confirm all other electrical and mechanical parameters match your design requirements, including voltage rating, operating temperature, and flange configuration.

Q: What is the inventory status for substitute parts?

A: Current inventory levels are: 182-025-213R531 (6654 units), 5788800-2 (5684 units), 5788801-2 (1494 units), 747846-3 (941 units), 747846-4 (2174 units), 747846-6 (1703 units), 788800-1 (1132 units), RDBD-25S-LNA(55) (785 units), RDBD-25SE-LN(55) (816 units), RDBD-25SE1/M2.6(55) (913 units). Verify current availability with your supplier for production requirements.

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