L77HDAH26SVF D-Sub High Density Receptacle Connector - Equivalent & Substitute Parts

Part Overview

The L77HDAH26SVF is a 26-position D-Sub high density receptacle connector manufactured by Amphenol ICC (Commercial Products). This panel mount connector features female sockets with solder cup termination and is designed for signal applications requiring robust electrical connectivity. The part maintains active product status with 779 units in current inventory. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design flexibility permits component selection from qualified manufacturers.

Substiute Parts

L77HDAH26SVF

Amphenol ICC (Commercial Products)In Stock: 840L77HDAH26SVF Datasheet

Current PartRFQ

180-M26-203L001

NorComp Inc.In Stock: 1290180-M26-203L001 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the L77HDAH26SVF is determined by strict alignment with the following critical 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 and layout: 2 (DA, A) High Density
• Mounting type: Panel Mount
• Termination method: Solder Cup
• Contact type: Signal
• Current rating: 3A
• Material flammability rating: UL94 V-0

Allowable Variations:

• Shell material finish (Steel Tin Plated vs. Steel Nickel Plated)
• Contact finish thickness (Flash grade acceptable)
• Contact form (Stamped vs. Machined)
• Dielectric material composition (Thermoplastic Glass Filled vs. PBT Glass Filled)
• Operating temperature upper limit (155°C vs. 125°C; lower limit acceptable)
• Voltage rating (250V vs. unspecified; higher or equal acceptable)
• Shielding feature presence
• Wire gauge specification availability

The substitute part 180-M26-203L001 from NorComp Inc. meets all mandatory matching parameters and qualifies as a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the L77HDAH26SVF and 180-M26-203L001 maintain active product status and comply with applicable regulatory requirements. The L77HDAH26SVF carries RoHS Compliant certification, while the 180-M26-203L001 carries ROHS3 Compliant certification, indicating enhanced compliance scope. Both parts are classified under ECCN EAR99 and share identical HTSUS coding.

The primary distinction between these parts lies in operating temperature range. The L77HDAH26SVF supports operation to 155°C, while the 180-M26-203L001 supports operation to 125°C. Applications requiring sustained operation above 125°C must utilize the L77HDAH26SVF. For applications operating within the -55°C to 125°C range, either part is functionally equivalent.

Shell material finish differs between the two parts: tin plating on the L77HDAH26SVF versus nickel plating on the 180-M26-203L001. Both finishes provide corrosion resistance appropriate for signal-level applications. Contact form variation (stamped versus machined) does not affect electrical performance for signal applications at the specified current rating of 3A.

Both parts feature identical current and voltage ratings, gold-plated contacts with flash thickness, UL94 V-0 flammability rating, and unlimited moisture sensitivity level (MSL 1). Inventory availability differs: 779 units of L77HDAH26SVF and 1204 units of 180-M26-203L001 are currently in stock.

Frequently Asked Questions (FAQ)

Q: Can the 180-M26-203L001 be used as a direct replacement for the L77HDAH26SVF in all applications?

A: The 180-M26-203L001 functions as a direct equivalent for applications operating within -55°C to 125°C. Applications requiring sustained operation above 125°C must use the L77HDAH26SVF, which is rated to 155°C.

Q: What is the significance of the shell material finish difference (tin versus nickel plating)?

A: Both tin and nickel plating provide corrosion resistance for signal-level applications. The choice between them depends on specific environmental exposure requirements and design specifications. Both finishes are acceptable for standard industrial environments.

Q: Are the contact form differences (stamped versus machined) significant for signal applications?

A: For signal applications at 3A current rating, contact form variation between stamped and machined does not affect electrical performance. Both forms provide adequate contact pressure and conductivity.

Q: Do both parts meet current regulatory compliance requirements?

A: Yes. The L77HDAH26SVF is RoHS Compliant, and the 180-M26-203L001 is ROHS3 Compliant. Both meet current regulatory standards. The ROHS3 designation indicates broader compliance scope.

Q: What is the impact of dielectric material differences?

A: The L77HDAH26SVF uses Thermoplastic Glass Filled dielectric, while the 180-M26-203L001 uses Polybutylene Terephthalate (PBT) Glass Filled. Both materials provide equivalent electrical insulation properties and UL94 V-0 flammability rating for signal applications.

Q: Are there any packaging or inventory considerations for part selection?

A: Both parts are supplied in tray packaging. The 180-M26-203L001 has higher current inventory (1204 units) compared to the L77HDAH26SVF (779 units). Availability may influence sourcing decisions for high-volume requirements.

Q: What moisture sensitivity level applies to both parts?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard handling and storage procedures apply without special moisture control requirements.