L77DA15S1APN: 15 Position D-Sub Receptacle, Female Sockets Connector

Part Overview

The L77DA15S1APN is a 15-position D-Sub receptacle connector with female sockets, manufactured by Amphenol ICC (Commercial Products). This right-angle solder-mount connector is designed for through-hole panel applications with a 2-row configuration (Shell Size DA, A). The part is currently in active production status with 1041 units in stock.

Finding equivalent and substitute parts is necessary when the primary part becomes unavailable, when alternative mounting or contact configurations are required, or when sourcing from different manufacturers is preferred for supply chain optimization.

Substiute Parts

L77DA15S1APN

Amphenol ICC (Commercial Products)In Stock: 1134L77DA15S1APN Datasheet

Current PartRFQ

173-E15-211R141

NorComp Inc.In Stock: 1158173-E15-211R141 Datasheet

SimilarRFQ

173-E15-211R241

NorComp Inc.In Stock: 1434173-E15-211R241 Datasheet

SimilarRFQ

174-E15-211R141

NorComp Inc.In Stock: 1319174-E15-211R141 Datasheet

SimilarRFQ

DA15S564GTLF

Amphenol ICC (FCI)In Stock: 1213DA15S564GTLF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the L77DA15S1APN is determined by the following mandatory parameters:

Core electrical and mechanical compatibility requirements:

• D-Sub receptacle connector with female sockets configuration
• 15-position, 2-row layout with Shell Size DA/A
• Through-hole right-angle solder termination
• Minimum 300V voltage rating (main part specification)
• Operating temperature range supporting -55°C to 125°C operation

Parameters permitting variation in substitutes:

• Current rating: Acceptable if greater than or equal to 5A minimum (substitutes may have lower ratings than the main part's 7.5A where application permits)
• Contact finish composition: Acceptable variations in gold plating thickness and application method when meeting durability requirements
• Shell material finish: Alternative protective finishes (yellow chromate vs. tin plate) acceptable for non-corrosive environments
• RoHS compliance: Non-compliant alternatives acceptable only when legacy system integration is required
• Flange feature configuration: Variations in mounting bracket or screwlock design acceptable based on panel integration requirements

Substitute parts 173-E15-211R141, 173-E15-211R241, and 174-E15-211R141 share the core D-Sub receptacle architecture and socket configuration. Part DA15S564GTLF is from the same manufacturer (Amphenol ICC) within the active product line and maintains full electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Active Production Parts (Recommended for new designs):

DA15S564GTLF is the preferred electrical equivalent within the active Amphenol ICC product line. It maintains identical shell size, mounting configuration, and operating temperature range as the L77DA15S1APN. Both parts carry RoHS compliance certification and UL94 V-0 flammability ratings. The primary difference is packaging format (bulk vs. tray) and contact finish technology (GXT™ proprietary finish vs. standard gold plating). For applications requiring the specified 7.5A current rating, verification against the 5A per contact specification of the DA15S564GTLF is necessary.

Obsolete NorComp Substitutes (Legacy or discontinuation replacement):

Parts 173-E15-211R141, 173-E15-211R241, and 174-E15-211R141 are obsolete products from NorComp Inc. These parts are electrically and mechanically compatible with the L77DA15S1APN for 15-position D-Sub receptacle applications, but present the following considerations:

• Operating temperature range limited to -50°C to 100°C (5°C lower minimum, 25°C lower maximum than the primary part)
• Current rating reduced to 5A (below the 7.5A specification of the primary part)
• RoHS non-compliance requires regulatory evaluation for applications in RoHS-regulated jurisdictions
• Yellow chromate shell finish differs from tin plate specification

Parts 173-E15-211R141 and 174-E15-211R141 differ in backset spacing (7.20mm vs. 9.40mm) and flange feature design. Part 173-E15-211R241 employs standard screws in place of female screwlock fasteners.

Selection among NorComp variants should be limited to applications where existing inventory availability justifies continued use and where reduced temperature range and current rating requirements are acceptable.

Frequently Asked Questions (FAQ)

Q: Can DA15S564GTLF directly replace L77DA15S1APN in all applications?

A: Electrical and mechanical compatibility is confirmed for the D-Sub receptacle configuration, shell size, position count, and solder termination. The DA15S564GTLF maintains the 300V voltage rating and -55°C to 125°C operating range. Current rating verification is required: the main part specifies 7.5A while the substitute is rated 5A per contact. Applications exceeding 5A per contact require design evaluation. Packaging format differs (bulk vs. tray); this does not affect electrical performance but may impact procurement and assembly workflow.

Q: Why are the NorComp parts listed as substitutes if they are obsolete?

A: Obsolete parts remain functional equivalents for D-Sub 15-position receptacle applications and may be available from secondary inventory sources. They are listed to document compatibility relationships and support legacy system maintenance or retrofit projects. New designs must not select obsolete parts; only active products (L77DA15S1APN and DA15S564GTLF) are appropriate for new applications.

Q: What is the significance of backset spacing differences in the NorComp parts?

A: Backset spacing defines the distance from the connector mating face to the solder mounting plane. Values of 7.20mm (173-E15-211R141, 173-E15-211R241), 9.40mm (174-E15-211R141), 10.30mm (L77DA15S1APN), and 10.40mm (DA15S564GTLF) indicate dimensional variation in panel cutout requirements and PCB layout planning. Direct mechanical interchange between parts with different backset specifications requires panel redesign and is not recommended for existing assemblies.

Q: Are RoHS non-compliant substitutes acceptable?

A: RoHS compliance is determined by applicable regulatory requirements in the end-product market and end-use application. Products intended for RoHS-regulated markets must use RoHS-compliant components. The L77DA15S1APN and DA15S564GTLF both carry RoHS compliance certification and are required for RoHS-regulated applications. NorComp alternatives (173-E15-211R141, 173-E15-211R241, 174-E15-211R141) are non-compliant and are restricted to legacy system support where regulatory exemptions apply.

Q: What contact finish difference exists between the parts?

A: The L77DA15S1APN uses gold plating at 8.00µin (0.203µm) thickness. Substitute parts employ flash gold plating (unspecified thickness). The DA15S564GTLF incorporates Amphenol's proprietary GXT™ gold finish. All finishes provide corrosion resistance and electrical conductivity suitable for signal-level D-Sub applications. Selection should be based on environmental exposure requirements and contact durability specifications in the system design.

Q: Can the parts be intermixed in multi-connector assemblies?

A: Mating compatibility exists between all listed parts and standard 15-position D-Sub plugs (male connectors) with identical shell size (DA, A). However, mixing active and obsolete products, or products with different backset spacing, in the same assembly is not recommended. Standardizing on a single connector model across an assembly simplifies inventory management, qualification testing, and field service procedures.