172-E25-102-021 D-Sub Plug Connector Equivalent & Substitute Parts

Part Overview

The 172-E25-102-021 is a 25-position D-Sub plug connector manufactured by NorComp Inc., designed for panel mount applications with male pins and solder cup termination. This connector is part of the 172-E series and serves as a standard interface component in electronic assemblies requiring D-shaped connector configurations.

The original part (172-E25-102-021) is currently in stock with 646 units available. Due to product lifecycle management, obsolescence planning, or supply chain optimization, equivalent substitute parts from the same manufacturer series are available to maintain design compatibility while offering alternative sourcing options.

Key Parameters

Parameter	Value
Manufacturer Part Number	172-E25-102-021
Manufacturer	NorComp Inc.
Category	D-Sub, D-Shaped Connectors
Connector Type	Plug, Male Pins
Number of Positions	25
Number of Rows	2
Shell Size, Connector Layout	3 (DB, B)
Mounting Type	Panel Mount
Termination	Solder Cup
Current Rating	5A
Operating Temperature Range	-50°C ~ 100°C
Series	172-E

Substitute Part Grouping Explanation

Substitution eligibility for the 172-E25-102-021 is determined by strict equivalence across the following critical parameters:

Connector Type: Plug with Male Pins
Number of Positions: 25
Number of Rows: 2
Shell Size and Layout: 3 (DB, B)
Mounting Type: Panel Mount
Termination Method: Solder Cup
Current Rating: 5A
Operating Temperature Range: -50°C ~ 100°C
Base Product Number: 172-E25

The substitute parts 172-E25-102R021 and 172-E25-103R021 maintain identical functional and mechanical specifications across all critical parameters. Variations exist only in shell material finish (tin plated versus nickel plated) and product status (obsolete versus active), which do not affect electrical or mechanical interchangeability within the specified operating conditions.

Parameter Comparison

Parameter	172-E25-102-021	172-E25-102R021	172-E25-103R021
Manufacturer	NorComp Inc.	NorComp Inc.	NorComp Inc.
Connector Type	Plug, Male Pins	Plug, Male Pins	Plug, Male Pins
Number of Positions	25	25	25
Number of Rows	2	2	2
Shell Size, Connector Layout	3 (DB, B)	3 (DB, B)	3 (DB, B)
Mounting Type	Panel Mount	Panel Mount	Panel Mount
Termination	Solder Cup	Solder Cup	Solder Cup
Shell Material, Finish	Steel, Tin Plated	Steel, Tin Plated	Steel, Nickel Plated
Contact Finish	Gold (Flash)	Gold (Flash)	Gold (Flash)
Current Rating	5A	5A	5A
Operating Temperature Range	-50°C ~ 100°C	-50°C ~ 100°C	-50°C ~ 100°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Current	Obsolete	Active
Inventory Availability	646 Pcs	1105 Pcs	675 Pcs

Engineering Selection Recommendations

All three parts (172-E25-102-021, 172-E25-102R021, and 172-E25-103R021) are electrically and mechanically interchangeable for applications requiring a 25-position D-Sub plug connector with panel mount configuration and solder cup termination.

The primary distinction between substitute options is product status and shell material finish:

172-E25-102-021 and 172-E25-102R021 feature tin-plated steel shells. The original part maintains current product status, while 172-E25-102R021 is classified as obsolete.

172-E25-103R021 features a nickel-plated steel shell and maintains active product status. This part is recommended for new designs and long-term supply chain planning due to its active classification and higher current inventory level (675 units).

All parts comply with ROHS3 and REACH requirements, carry UL94 V-0 flammability certification, and operate within the -50°C to 100°C temperature range. Shell material finish differences do not affect electrical performance or mechanical fit within specified operating conditions.

Frequently Asked Questions (FAQ)

Q: Are 172-E25-102-021, 172-E25-102R021, and 172-E25-103R021 directly interchangeable?

A: Yes. All three parts maintain identical electrical and mechanical specifications across connector type, position count, shell size, mounting configuration, and termination method. They are direct substitutes within the 172-E series.

Q: What is the difference between tin-plated and nickel-plated shell finishes?

A: Shell material finish affects corrosion resistance characteristics. Tin-plated shells (172-E25-102-021 and 172-E25-102R021) and nickel-plated shells (172-E25-103R021) both meet the specified performance requirements. Selection depends on environmental exposure and application-specific corrosion resistance needs.

Q: Why is 172-E25-102R021 marked as obsolete?

A: Product status reflects manufacturer lifecycle management. Obsolete classification indicates the part is no longer in active production. For new designs and long-term availability, 172-E25-103R021 (active status) is the preferred selection.

Q: Do packaging differences affect connector performance?

A: No. Packaging format (tray) is a logistics consideration only and does not affect electrical or mechanical performance of the connector itself.

Q: Are all three parts RoHS and REACH compliant?

A: Yes. All three parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the current rating for these connectors?

A: All three parts are rated for 5A continuous current at the specified operating temperature range of -50°C to 100°C.

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