171-025-212-021 D-Sub Receptacle 25 Position Equivalent & Substitute Parts

Part Overview

The NorComp Inc. 171-025-212-021 is a 25 Position D-Sub Receptacle connector with female sockets, panel mount configuration, and solder termination. This connector is classified as Active product status and is ROHS3 compliant. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical compatibility, and termination methods. Alternative models become necessary when the primary part reaches end-of-life status, inventory constraints occur, or design flexibility requires qualified alternatives from different manufacturers.

Substiute Parts

171-025-212-021

NorComp Inc.In Stock: 953171-025-212-021 Datasheet

Current PartRFQ

171-025-213R021

NorComp Inc.In Stock: 4130171-025-213R021 Datasheet

DirectRFQ

09663116503

HARTINGIn Stock: 86409663116503 Datasheet

SimilarRFQ

09663117503

HARTINGIn Stock: 75409663117503 Datasheet

SimilarRFQ

09663516512

HARTINGIn Stock: 73209663516512 Datasheet

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09663517511

HARTINGIn Stock: 103109663517511 Datasheet

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628-025-220-012

Mercury United Electronics, Inc.In Stock: 1101628-025-220-012 Datasheet

SimilarRFQ

628-025-220-013

Mercury United Electronics, Inc.In Stock: 1203628-025-220-013 Datasheet

SimilarRFQ

628-025-220-014

Mercury United Electronics, Inc.In Stock: 899628-025-220-014 Datasheet

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628-025-220-016

Mercury United Electronics, Inc.In Stock: 725628-025-220-016 Datasheet

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628-025-620-016

Mercury United Electronics, Inc.In Stock: 844628-025-620-016 Datasheet

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DLS3XS4AA35X

Amphenol CONECIn Stock: 932DLS3XS4AA35X Datasheet

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DLS3XS4AA39X

Amphenol CONECIn Stock: 814DLS3XS4AA39X Datasheet

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DLS3XS4AD01X

Amphenol CONECIn Stock: 836DLS3XS4AD01X Datasheet

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L77SDB25STA113

Amphenol ICC (Commercial Products)In Stock: 1235L77SDB25STA113 Datasheet

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SDBG-25S(55)

Hirose Electric Co LtdIn Stock: 926SDBG-25S(55) Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 171-025-212-021 is determined by the following critical parameters:

Primary Matching Criteria:

• Connector Style: D-Sub
• Connector Type: Receptacle, Female Sockets
• Number of Positions: 25
• Number of Rows: 2
• Shell Size, Connector Layout: 3 (DB, B)
• Termination: Solder
• Material Flammability Rating: UL94 V-0
• RoHS Status: ROHS3 Compliant

Secondary Compatibility Parameters:

• Mounting Type: Panel Mount or Through Hole (both acceptable for circuit board integration)
• Shell Material: Steel with appropriate finish
• Contact Finish: Gold or equivalent conductive finish
• Current Rating: Equal to or greater than 5A
• Operating Temperature Range: Must encompass -50°C to 100°C or broader

Substitute parts are grouped into two categories:

Direct Equivalents (NorComp Series 171): Parts maintaining identical manufacturer lineage, packaging variations, and flange configurations while preserving all electrical and mechanical specifications.

Cross-Manufacturer Alternatives (HARTING and Mercury United Electronics): Parts from alternative manufacturers meeting all critical electrical parameters, connector geometry, and compliance requirements. These parts may vary in contact material composition, dielectric material, and specific flange features while maintaining functional interchangeability.

Parameter Comparison

Engineering Selection Recommendations

NorComp Series 171 Direct Equivalent (171-025-213R021): This part is the primary substitute for 171-025-212-021. Both parts share identical electrical specifications, mechanical dimensions, and compliance certifications. The 171-025-213R021 is supplied in Tray packaging with significantly higher inventory availability (4026 units). Selection of this part introduces no design risk and maintains full compatibility with existing circuit board layouts and connector mating interfaces.

HARTING Cross-Manufacturer Alternatives (09663116503, 09663117503, 09663516512, 09663517511): These parts meet all critical D-Sub 25 position specifications and maintain ROHS3 compliance. The HARTING connectors provide higher current ratings (6.5A versus 5A) and extended operating temperature ranges (-55°C to 125°C versus -50°C to 100°C). Flange feature variations (Mating Side Female Screwlock, Housing/Shell with Board Lock) require mechanical verification against panel cutout and mounting hole specifications. These parts are suitable for applications where the extended thermal and current performance envelope provides design margin.

Mercury United Electronics Series 628 Alternatives (628-025-220-014, 628-025-220-016, 628-025-620-016): These parts maintain D-Sub 25 position geometry and solder termination. The 628-025-220-014 matches the 5A current rating and gold contact finish of the primary part. The 628-025-220-016 and 628-025-620-016 variants feature reduced current ratings (3A per contact) and narrower operating temperature range (-55°C to 85°C), making them suitable only for applications where the primary part's thermal and current specifications exceed design requirements. Board Lock and Shielded features in these variants require verification against circuit board layout constraints.

All substitute parts listed maintain ROHS3 compliance and UL94 V-0 flammability ratings, ensuring regulatory equivalence with the primary part.

Frequently Asked Questions (FAQ)

Q: Can 171-025-213R021 be used as a direct replacement for 171-025-212-021?

A: Yes. Both parts are manufactured by NorComp Inc., share identical electrical and mechanical specifications, and maintain the same compliance certifications. The primary difference is packaging format (Tray versus standard packaging) and higher inventory availability of the 171-025-213R021.

Q: What are the key differences between NorComp and HARTING D-Sub 25 position receptacles?

A: NorComp 171 series and HARTING alternatives maintain identical connector geometry (25 positions, 2 rows, Shell Size 3 DB/B) and solder termination. HARTING parts provide higher current ratings (6.5A) and broader operating temperature ranges (-55°C to 125°C). Flange configurations differ: NorComp uses Board Side flanges, while HARTING variants feature Mating Side Female Screwlock or Housing/Shell configurations. Mechanical mounting verification is required before substitution.

Q: Are Mercury United Electronics 628 series connectors fully compatible with NorComp 171 series?

A: Mercury 628-025-220-014 provides functional equivalence with matching 5A current rating and gold contact finish. The 628-025-220-016 and 628-025-620-016 variants feature reduced current ratings (3A per contact) and narrower temperature range (-55°C to 85°C), limiting their use to applications where these reduced specifications are acceptable. All Mercury parts maintain D-Sub 25 position geometry and solder termination.

Q: What mounting considerations apply when substituting HARTING connectors?

A: HARTING parts use Through Hole mounting with flange features differing from the primary part's Panel Mount configuration. Verify that circuit board cutout dimensions, mounting hole spacing, and panel interface geometry accommodate the specific HARTING flange type (Mating Side Female Screwlock with 4-40 threads, or Housing/Shell with 4-40 or M3 threads). Physical sample verification is recommended before production implementation.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. All substitute parts listed in this reference maintain ROHS3 Compliant status and UL94 V-0 flammability ratings, ensuring regulatory equivalence with the primary 171-025-212-021 part.

Q: Which substitute part offers the best thermal performance?

A: HARTING parts (09663116503, 09663117503, 09663516512, 09663517511) provide the broadest operating temperature range (-55°C to 125°C) compared to the primary part (-50°C to 100°C) and Mercury alternatives (-55°C to 85°C). Selection depends on application thermal requirements and mechanical compatibility verification.

Q: Can 628-025-220-016 be used in high-current applications?

A: No. The 628-025-220-016 is rated for 3A per contact, which is below the primary part's 5A rating. This part is suitable only for applications where current requirements do not exceed 3A per contact. For applications requiring 5A or higher current capacity, use 171-025-213R021, 171-025-212-021, or HARTING alternatives rated at 6.5A.