172-E25-112-021 D-Sub Plug 25 Position Connector - Equivalent & Substitute Parts

Part Overview

The 172-E25-112-021 is a 25 Position D-Sub Plug connector manufactured by NorComp Inc., designed for panel mount, through-hole solder termination applications. This connector features male pins in a 2-row configuration with shell size 3 (DB, B) layout. The part is actively stocked with 1147 pieces available as new original inventory.

Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part specification, including connector style, position count, mounting type, termination method, and shell material characteristics.

Key Parameters

Parameter	172-E25-112-021
Manufacturer	NorComp Inc.
Connector Style	D-Sub
Connector Type	Plug, Male Pins
Number of Positions	25
Number of Rows	2
Shell Size, Connector Layout	3 (DB, B)
Mounting Type	Panel Mount, Through Hole
Termination	Solder
Shell Material, Finish	Steel, Nickel Plated
Contact Finish	Gold
Material Flammability Rating	UL94 V-0
Contact Material	Brass
Current Rating (Amps)	5A

Substitute Part Grouping Explanation

Substitute parts for the 172-E25-112-021 are qualified based on the following critical parameters:

Connector Style & Type: D-Sub Plug with Male Pins
Position Count & Configuration: 25 positions in 2-row layout
Shell Size: 3 (DB, B)
Mounting & Termination: Panel Mount or Through Hole with Solder termination
Shell Material: Steel with Nickel Plating
Contact Material & Finish: Brass with Gold plating
Flammability Compliance: UL94 V-0

The following parts meet these core substitution criteria:

172-E25-113R021 (NorComp Inc., 172-E Series)
627-025-520-047 (Mercury United Electronics, 627 Plastic Series)
627-025-221-048 (Mercury United Electronics, 627 Metal Series)
627-025-320-067 (Mercury United Electronics, 627 Metal Series)
8-1393740-0 (TE Connectivity AMP Connectors, AMPLIMITE HD-20 Series)
3-1634220-2 (TE Connectivity AMP Connectors, AMPLIMITE HD-20 Series)

Parameter Comparison

Parameter	172-E25-112-021	172-E25-113R021	627-025-520-047	627-025-221-048	627-025-320-067	8-1393740-0	3-1634220-2
Manufacturer	NorComp Inc.	NorComp Inc.	Mercury United Electronics	Mercury United Electronics	Mercury United Electronics	TE Connectivity AMP	TE Connectivity AMP
Connector Type	Plug, Male Pins	Plug, Male Pins	Plug, Male Pins	Plug, Male Pins	Plug, Male Pins	Plug, Male Pins	Plug, Male Pins
Number of Positions	25	25	25	25	25	25	25
Number of Rows	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)
Mounting Type	Panel Mount, Through Hole	Panel Mount, Through Hole	Panel Mount, Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Shell Material, Finish	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Tin Plated	Steel, Nickel Plated
Contact Finish	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Contact Material	Brass	Brass	Brass	Brass	Brass	Phosphor Bronze	Brass
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Current Rating (Amps)	5A	5A	5A	5A	3A per Contact	Not Specified	3A
RoHS Status	Not Specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS non-compliant
Product Status	Not Specified	Active	Active	Active	Active	Active	Active
Inventory (Pcs)	1147	1216	895	774	812	840	1005

Engineering Selection Recommendations

Primary Substitute - Same Manufacturer Series: 172-E25-113R021 is the direct equivalent within NorComp Inc.'s 172-E series. This part maintains identical electrical and mechanical specifications with ROHS3 compliance and active product status. Packaging is provided in Tray format with 1216 units in stock.

Mercury United Electronics Substitutes: Parts 627-025-520-047, 627-025-221-048, 627-025-320-067, and 627-025-228-052 from Mercury United Electronics meet core D-Sub 25-position specifications. All are ROHS3 compliant and actively produced. Current rating varies between 3A and 5A per contact. These parts are available in Bulk or Tube packaging with inventory ranging from 774 to 895 units.

TE Connectivity AMP Connectors Substitutes: Part 8-1393740-0 (AMPLIMITE HD-20 series) features Phosphor Bronze contacts with Tin-plated steel shell, RoHS compliant status, and 840 units in stock. Part 3-1634220-2 (AMPLIMITE HD-20 series) provides Brass contacts with Nickel-plated shell, though RoHS non-compliant status should be evaluated against application requirements. Both support 25-position D-Sub configuration with solder termination.

Compliance Considerations: For applications requiring ROHS3 compliance, 172-E25-113R021, all Mercury United Electronics variants, and 8-1393740-0 are suitable. Part 3-1634220-2 is RoHS non-compliant and should be selected only when legacy component specifications are required.

Frequently Asked Questions (FAQ)

Q: What determines if a part can substitute for 172-E25-112-021? A: Substitution is based on matching connector style (D-Sub Plug), position count (25), row configuration (2), shell size (3/DB-B), mounting type (Panel Mount or Through Hole), termination method (Solder), shell material (Steel, Nickel Plated), contact material (Brass or equivalent), and flammability rating (UL94 V-0).

Q: Are all substitute parts panel mount compatible? A: The primary substitute 172-E25-113R021 and 627-025-520-047 support both Panel Mount and Through Hole mounting. Mercury United Electronics parts 627-025-221-048, 627-025-228-052, and 627-025-320-067 support Through Hole mounting only. TE Connectivity parts 8-1393740-0 and 3-1634220-2 support Through Hole mounting only.

Q: What is the difference in current rating between substitutes? A: The main part 172-E25-112-021 and substitutes 172-E25-113R021, 627-025-520-047, and 627-025-221-048 support 5A current rating. Parts 627-025-320-067 and 3-1634220-2 support 3A per contact. Part 8-1393740-0 does not specify current rating in available documentation.

Q: Which substitutes are RoHS compliant? A: Parts 172-E25-113R021, 627-025-520-047, 627-025-221-048, 627-025-228-052, 627-025-320-067, and 8-1393740-0 are ROHS3 compliant. Part 3-1634220-2 is RoHS non-compliant.

Q: What packaging options are available? A: 172-E25-113R021 is supplied in Tray packaging. Mercury United Electronics parts are supplied in Bulk or Tube formats. TE Connectivity 8-1393740-0 is supplied in Tray packaging. Packaging selection should align with assembly process requirements and inventory management practices.

Q: Can I use a part with Phosphor Bronze contacts instead of Brass? A: Part 8-1393740-0 uses Phosphor Bronze contacts instead of Brass. This substitution is electrically and mechanically compatible for D-Sub 25-position applications, though contact material differences should be evaluated for specific application requirements.

Q: What is the operating temperature range for substitutes? A: Mercury United Electronics parts (627 series) operate from -55°C to 85°C. NorComp 172-E25-113R021 operates from -50°C to 100°C. TE Connectivity 3-1634220-2 operates from -55°C to 105°C. Operating temperature range should be confirmed against application environmental specifications.

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