L77HDA26SVFM Equivalent & Substitute Parts

Part Overview

The L77HDA26SVFM is a 26-position D-Sub high-density receptacle connector manufactured by Amphenol ICC (Commercial Products). This connector features female sockets with solder cup termination and is designed for free-hanging in-line mounting applications. The part is currently in active product status with 1100 units in stock.

Substitute parts are necessary when the original L77HDA26SVFM becomes unavailable, when alternative mounting configurations are required, or when design specifications allow for compatible connector variants. The substitute parts listed maintain electrical and mechanical compatibility through matching core parameters including connector style, position count, termination method, and contact specifications.

Substiute Parts

L77HDA26SVFM

Amphenol ICC (Commercial Products)In Stock: 1153L77HDA26SVFM 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

SimilarRFQ

180-026-203L011

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

SimilarRFQ

180-026-203L021

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the L77HDA26SVFM is determined by the following core parameters:

Mandatory Matching Parameters:

• Connector Style: D-Sub, High Density
• Connector Type: Receptacle, Female Sockets
• Number of Positions: 26
• Number of Rows: 3
• Shell Size, Connector Layout: 2 (DA, A) High Density
• Termination: Solder Cup
• Contact Type: Signal
• Material Flammability Rating: UL94 V-0

Variable Parameters (Substitution Allowed):

• Mounting Type: The main part uses free-hanging in-line mounting; substitute parts use panel mount configurations
• Shell Material Finish: Tin plated (main part) versus nickel plated (substitute parts)
• Contact Material: Phosphor bronze (main part) versus brass (substitute parts)
• Current Rating: 3A (main part) versus 5A (substitute parts)
• Operating Temperature Range: -55°C ~ 155°C (main part) versus -50°C ~ 100°C (substitute parts)
• Flange Feature: Mating side female screwlock (main part) versus housing/shell unthreaded or cable side 4-40 (substitute parts)

The four substitute parts from NorComp Inc. (180-026-202L001, 180-026-203L001, 180-026-203L011, 180-026-203L021) maintain electrical compatibility through matching connector style, position count, termination method, and contact specifications. Differences in mounting type and flange configuration allow these parts to serve alternative installation requirements while preserving signal integrity and mechanical fit within the D-Sub high-density connector family.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: L77HDA26SVFM

The L77HDA26SVFM remains the preferred choice for applications requiring free-hanging in-line mounting with an extended operating temperature range of -55°C to 155°C. This part is in active product status with established supply availability. The tin-plated steel shell and phosphor bronze contacts provide the specified electrical characteristics for the original design.

Active Substitute Options: 180-026-203L001, 180-026-203L011, 180-026-203L021

These three NorComp Inc. parts are in active product status and provide panel mount alternatives with higher current ratings (5A versus 3A). Selection among these three depends on flange configuration requirements:

• 180-026-203L001: Housing/shell unthreaded flange for standard panel mount applications
• 180-026-203L011: Cable side 4-40 flange for applications requiring rear-panel cable attachment
• 180-026-203L021: Cable side 4-40 flange for applications requiring rear-panel cable attachment

All three active substitutes feature nickel-plated steel shells, brass contacts, and PBT dielectric material. These parts are ROHS3 compliant and suitable for applications with operating temperature ranges of -50°C to 100°C.

Obsolete Substitute: 180-026-202L001

The 180-026-202L001 is classified as obsolete product status. While inventory is available (1354 units), this part should not be selected for new designs or long-term supply requirements. This part features tin-plated steel shell and brass contacts with a housing/shell unthreaded flange configuration.

Compliance Considerations

All parts maintain UL94 V-0 material flammability rating and are compliant with RoHS regulations. The main part is RoHS compliant; substitute parts are ROHS3 compliant. All parts carry EAR99 ECCN classification and 8536.69.8000 HTSUS code.

Frequently Asked Questions (FAQ)

Q: Can the L77HDA26SVFM be directly replaced with a NorComp 180-026 series connector?

A: Direct replacement depends on mounting configuration. The L77HDA26SVFM uses free-hanging in-line mounting, while all NorComp substitutes use panel mount configurations. If your application allows panel mount installation, the 180-026-203L001, 180-026-203L011, or 180-026-203L021 are electrically compatible. If in-line mounting is required, the L77HDA26SVFM must be retained.

Q: What are the differences between 180-026-203L001, 180-026-203L011, and 180-026-203L021?

A: All three parts are electrically identical with matching connector style, position count, termination, and contact specifications. The difference lies in flange configuration. The 180-026-203L001 has an unthreaded housing/shell flange for standard panel mounting. Both 180-026-203L011 and 180-026-203L021 feature cable side 4-40 flanges for rear-panel cable attachment applications.

Q: Why does the L77HDA26SVFM have a lower current rating (3A) than the NorComp substitutes (5A)?

A: Current rating differences reflect design variations between manufacturers. The L77HDA26SVFM is rated for 3A; NorComp parts are rated for 5A. Applications requiring the full 5A capacity should verify that the original design specification allows for the higher rating before substitution.

Q: Are there temperature range limitations when substituting the L77HDA26SVFM?

A: Yes. The L77HDA26SVFM operates from -55°C to 155°C. NorComp substitute parts operate from -50°C to 100°C. Applications requiring operation below -50°C or above 100°C must retain the L77HDA26SVFM.

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

A: The L77HDA26SVFM features a tin-plated steel shell; most NorComp substitutes feature nickel-plated steel shells. Both finishes provide corrosion resistance. Shell finish selection depends on environmental exposure and specific application requirements. The 180-026-202L001 (obsolete) uses tin plating, matching the main part.

Q: Is the 180-026-202L001 suitable for new designs?

A: No. The 180-026-202L001 is classified as obsolete product status. While current inventory exists, this part should not be selected for new designs or applications requiring long-term supply assurance. Use active status parts (180-026-203L001, 180-026-203L011, or 180-026-203L021) for new designs.

Q: Do all parts maintain the same contact specifications?

A: Contact finish (gold flash) is identical across all parts. Contact material differs: the L77HDA26SVFM uses phosphor bronze; NorComp substitutes use brass. Both materials provide adequate electrical conductivity for signal applications. Dielectric material also differs: the main part uses thermoplastic glass-filled material; substitutes use polybutylene terephthalate (PBT).

Q: What packaging is used for these connectors?

A: All parts are supplied in tray packaging suitable for automated assembly and storage.

Q: Are all parts RoHS compliant?

A: Yes. The L77HDA26SVFM is RoHS compliant. All NorComp substitute parts are ROHS3 compliant, which represents an updated compliance standard. Both compliance levels are acceptable for RoHS-regulated applications.