L77DA15S1AMN: Equivalent & Substitute Parts

Part Overview

The L77DA15S1AMN is a 15-position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products), featuring right-angle solder termination and through-hole mounting. This connector is in active product status and serves as a signal-level interconnect component rated for 7.5A at 300V with operating temperatures from -55°C to 125°C.

Substitute parts become necessary when the main product experiences supply constraints, design revisions, or when legacy applications require component alternatives within compatible electrical and mechanical parameters. The parts listed below maintain functional equivalence within defined parameter tolerances.

Substiute Parts

L77DA15S1AMN

Amphenol ICC (Commercial Products)In Stock: 871L77DA15S1AMN Datasheet

Current PartRFQ

173-E15-211R141

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

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173-E15-211R241

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

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174-E15-211R141

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

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DA15S564GTLF

Amphenol ICC (FCI)In Stock: 1213DA15S564GTLF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Functional substitution of D-Sub receptacle connectors is determined by equivalence in the following parameters: connector type (receptacle, female sockets), number of positions (15), shell size (Size 2), mounting style (right angle), termination method (solder), and flange feature configuration. Secondary compatibility factors include current rating, voltage rating, operating temperature range, and contact finish specification.

The substitute parts listed maintain the primary electrical and mechanical compatibility requirements:

• Electrical compatibility: Same voltage rating (300V minimum) and compatible current ratings
• Mechanical compatibility: Shell size 2 (DA, A) configuration, 15-position layout, right-angle mounting
• Termination compatibility: Solder termination to PCB
• Environmental compatibility: Operating temperature range that meets or exceeds application requirements
• Contact specifications: Gold-plated contacts for signal integrity

Parameter Comparison

Engineering Selection Recommendations

Active Product Alternatives (Recommended)

For new designs and ongoing production, DA15S564GTLF and L77DA15S1AMN both maintain active product status with full RoHS compliance. Both are manufactured by Amphenol ICC and support the complete operating temperature range (-55°C to 125°C) and 300V voltage rating. DA15S564GTLF offers an alternative through-hole configuration with equivalent electrical performance.

Legacy & Obsolete Parts (Conditional Use)

The NorComp 173-E and 174-E series alternatives (173-E15-211R141, 173-E15-211R241, 174-E15-211R141) are classified as obsolete products with RoHS non-compliance status. These parts maintain mechanical compatibility and feature gold-plated contacts but operate within a narrower temperature range (-50°C to 100°C) and lower current ratings (5A). Use of obsolete parts is limited to legacy system maintenance where component inventory exists and environmental compliance requirements do not apply.

Selection between active alternatives depends on specific flange feature requirements, mounting configuration, and packaging preferences (tray vs. bulk).

Frequently Asked Questions (FAQ)

Q: Can L77DA15S1AMN be directly replaced with DA15S564GTLF?

A: Yes, DA15S564GTLF provides direct electrical and mechanical substitution. Both are active products from Amphenol ICC, maintain identical shell size (Size 2), 15-position configuration, right-angle through-hole mounting, and support 300V operation across -55°C to 125°C. The primary difference is packaging (tray vs. bulk) and backset spacing tolerance (0.406" vs. 0.409"), which falls within acceptable PCB layout margins for D-Sub applications.

Q: What are the limitations of NorComp 173-E and 174-E series parts?

A: NorComp parts are classified as obsolete with end-of-life status. Additionally, they are RoHS non-compliant and operate at reduced current ratings (5A vs. 7.5A) with a narrower temperature range (-50°C to 100°C vs. -55°C to 125°C). These parts are suitable only for legacy product support where existing inventory is available and regulatory compliance exemptions apply.

Q: Does backset spacing variation affect compatibility?

A: Backset spacing differences (7.20mm, 9.40mm, 10.30mm, and 10.40mm across the part list) reflect row-to-row contact spacing on the PCB. While these variations are within standard D-Sub manufacturing tolerances, PCB layout compatibility must be verified for the specific application. Spacing differences do not affect signal integrity or electrical performance but require confirmation that the PCB footprint accommodates the selected connector.

Q: Are there flange feature differences between active products?

A: L77DA15S1AMN features an unthreaded housing/shell flange, while DA15S564GTLF incorporates a board lock feature. Both configurations provide through-hole right-angle mounting; selection depends on PCB retention requirements and mechanical assembly specifications.

Q: Is voltage rating critical for substitution?

A: The specified voltage rating of 300V for L77DA15S1AMN and DA15S564GTLF represents the maximum component withstand voltage. NorComp parts do not specify voltage rating in the provided data but maintain equivalent insulation characteristics. Applications operating below 300V can utilize any listed part; applications requiring confirmed voltage specification should use only parts with explicit 300V rating documentation.