L77HDA26SVF Equivalent & Substitute Parts Reference

Part Overview

The L77HDA26SVF is a 26-position D-Sub high-density receptacle connector manufactured by Amphenol ICC. This connector features female sockets with solder cup termination, designed for free-hanging in-line mounting applications. The part is currently in active product status with 937 units in stock inventory.

Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part specifications, enabling direct functional replacement in applications where mounting configuration or manufacturer preference permits substitution.

Substiute Parts

L77HDA26SVF

Amphenol ICC (Commercial Products)In Stock: 1008L77HDA26SVF Datasheet

Current PartRFQ

180-026-202L001

NorComp Inc.In Stock: 1448180-026-202L001 Datasheet

SimilarRFQ

180-026-203L001

NorComp Inc.In Stock: 2451180-026-203L001 Datasheet

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180-026-203L011

NorComp Inc.In Stock: 955180-026-203L011 Datasheet

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180-026-203L021

NorComp Inc.In Stock: 855180-026-203L021 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the L77HDA26SVF are identified based on the following core electrical and mechanical compatibility criteria:

Core Matching Parameters:

• 26-position D-Sub high-density configuration
• Female socket receptacle type
• 3-row connector layout (DA/A shell size)
• Solder cup termination
• Gold-plated contacts (flash thickness)
• UL94 V-0 flammability rating
• RoHS compliance status

Allowed Variations:

• Mounting type: Free-hanging in-line versus panel mount
• Flange feature configuration: Mating side screwlock versus housing/shell unthreaded versus cable side screwlock
• Shell finish: Tin plated versus nickel plated
• Contact material: Phosphor bronze versus brass
• Current rating: 3A versus 5A (higher rating acceptable for substitution)
• Operating temperature range: Narrower range acceptable if application requirements are met
• Dielectric material: Thermoplastic glass-filled versus polybutylene terephthalate (PBT)

Non-Substitutable Parameters:

• Position count (must remain 26)
• Connector type (must remain receptacle, female sockets)
• Shell size (must remain 2/DA-A high density)
• Termination method (must remain solder cup)

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (L77HDA26SVF): The L77HDA26SVF remains the recommended choice for applications requiring free-hanging in-line mounting with mating-side screwlock flange configuration. This part is in active product status with established supply availability. The extended operating temperature range (-55°C to 155°C) supports demanding thermal environments. RoHS compliance and UL94 V-0 flammability rating meet standard regulatory requirements.

Secondary Selection (180-026-203L001 or 180-026-203L011): NorComp 180-026-203L001 and 180-026-203L011 are active-status alternatives suitable for panel-mount applications. Both parts provide higher current rating (5A versus 3A) and maintain UL94 V-0 compliance and ROHS3 certification. The 180-026-203L001 features unthreaded housing flange, while 180-026-203L011 provides cable-side screwlock configuration. Selection between these two depends on specific flange mounting requirements.

Avoid (180-026-202L001): The 180-026-202L001 carries obsolete product status and should not be selected for new designs or long-term supply requirements, despite current inventory availability.

Temperature Consideration: Applications requiring operation below -50°C or above 100°C must use the L77HDA26SVF, as all NorComp substitutes are limited to -50°C to 100°C operating range.

Mounting Configuration: Substitution is only valid when the application's mechanical mounting design accommodates the alternative mounting type (panel mount versus free-hanging in-line).

Frequently Asked Questions (FAQ)

Q: Can the NorComp 180-026-203L001 directly replace the L77HDA26SVF in all applications?

A: Direct replacement is limited to applications where panel-mount configuration is acceptable. The L77HDA26SVF is designed for free-hanging in-line mounting, while the 180-026-203L001 requires panel mounting. Electrical and contact specifications are compatible, but mechanical integration differs.

Q: What is the significance of the higher current rating (5A) in substitute parts?

A: The NorComp substitutes are rated for 5A versus the L77HDA26SVF's 3A rating. A higher current rating does not create incompatibility; it indicates the substitute can handle equal or greater current loads. Applications designed for 3A operation function correctly with 5A-rated connectors.

Q: Are there temperature limitations when using NorComp substitutes?

A: Yes. All NorComp substitute parts (180-026-202L001, 180-026-203L001, 180-026-203L011, 180-026-203L021) operate within -50°C to 100°C range, compared to the L77HDA26SVF's -55°C to 155°C range. Applications requiring operation outside the -50°C to 100°C window must use the L77HDA26SVF.

Q: What is the difference between the flange configurations in the substitute parts?

A: The 180-026-202L001 features unthreaded housing/shell flange for panel mounting without fasteners. The 180-026-203L011 and 180-026-203L021 both provide cable-side 4-40 screwlock configuration for threaded panel mounting. Selection depends on the mechanical mounting interface design of the application.

Q: Why is the 180-026-202L001 marked as obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production and support. While current inventory exists, long-term availability and technical support cannot be guaranteed. New designs should avoid this part number.

Q: Are all substitute parts RoHS compliant?

A: Yes. The L77HDA26SVF carries RoHS Compliant status, while all NorComp substitutes carry ROHS3 Compliant status. Both certifications meet current regulatory requirements for hazardous substance restrictions.

Q: What contact material differences exist between the main part and substitutes?

A: The L77HDA26SVF uses phosphor bronze contacts, while all NorComp substitutes use brass contacts. Both materials with gold flash plating provide equivalent electrical performance and corrosion resistance for signal-level applications.

Q: Can I use the 180-026-203L021 in place of the 180-026-203L011?

A: Yes. Both parts are functionally equivalent with identical electrical specifications, current rating, operating temperature range, and flange configuration (cable-side 4-40 screwlock). Selection can be based on inventory availability or delivery schedule.