L177DFA15SAM4B D-Sub 15 Position Receptacle Equivalent & Substitute Parts

Part Overview

The L177DFA15SAM4B is a 15 position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This panel mount, through-hole, right-angle solder connector features female sockets with a 2-row (DA, A) shell size configuration. The connector is actively produced and RoHS compliant, designed for signal applications with a 7.5A current rating and 300V voltage rating across an operating temperature range of -55°C to 125°C.

Substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required, or when design specifications permit operation within the electrical and mechanical parameters of equivalent models from other manufacturers.

Substiute Parts

L177DFA15SAM4B

Amphenol ICC (Commercial Products)In Stock: 1140L177DFA15SAM4B 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

Substitution eligibility for D-Sub 15 position receptacle connectors is determined by the following critical parameters:

Mandatory Matching Parameters:

• Connector type (Receptacle, Female Sockets)
• Number of positions (15)
• Number of rows (2)
• Shell size and connector layout (2 / DA, A)
• Mounting type (Panel Mount, Through Hole, Right Angle)
• Termination method (Solder)
• Contact type (Signal)

Electrical Compatibility Parameters:

• Current rating must equal or exceed the application requirement
• Voltage rating must equal or exceed the application requirement
• Operating temperature range must encompass the application range

Mechanical Compatibility Parameters:

• Backset spacing must be compatible with the application PCB layout
• Flange feature must be compatible with the mounting surface
• Contact form (Machined) must be consistent

The substitute parts identified (173-E15-211R141, 173-E15-211R241, 174-E15-211R141, and DA15S564GTLF) share the core D-Sub 15 position receptacle configuration with the L177DFA15SAM4B. However, variations in electrical ratings, backset spacing, and product status require careful evaluation for specific applications.

Parameter Comparison

Engineering Selection Recommendations

L177DFA15SAM4B (Primary Part)

The L177DFA15SAM4B remains the preferred selection for new designs and applications requiring active product support. This connector is actively manufactured, RoHS compliant, and provides the highest current rating (7.5A) among the available options. The operating temperature range of -55°C to 125°C accommodates extended environmental conditions. The tin-plated steel shell with gold contact finish and thermoplastic glass-filled dielectric material provides robust performance characteristics.

DA15S564GTLF (Recommended Active Substitute)

The DA15S564GTLF is the primary substitute when L177DFA15SAM4B availability is constrained. Both connectors are actively produced by Amphenol ICC and are RoHS compliant. Both share identical operating temperature ranges (-55°C to 125°C), voltage ratings (300V), and shell material finish (steel, tin plated). The DA15S564GTLF features a GXT™ gold contact finish and board lock feature. The primary difference is backset spacing (0.409" versus 0.590"), which requires PCB layout verification. Current rating is 5A per contact, which is lower than the L177DFA15SAM4B (7.5A) and must be evaluated against application requirements.

173-E15-211R141, 173-E15-211R241, 174-E15-211R141 (Obsolete Substitutes)

These NorComp Inc. connectors are obsolete products and are not recommended for new designs. All three parts are RoHS non-compliant, operate at reduced temperature ranges (-50°C to 100°C), and provide lower current ratings (5A). The backset spacing values (0.283" and 0.370") differ significantly from the L177DFA15SAM4B and require PCB redesign. These parts are suitable only for legacy system maintenance or repair applications where original specifications are no longer available and design modifications are acceptable.

Frequently Asked Questions (FAQ)

Q: Can the DA15S564GTLF directly replace the L177DFA15SAM4B without PCB modification?

A: Direct replacement depends on backset spacing compatibility. The L177DFA15SAM4B has 0.590" backset spacing, while the DA15S564GTLF has 0.409" backset spacing. If the PCB mounting holes are positioned for 0.590" spacing, the DA15S564GTLF will not align correctly. PCB layout verification is required before substitution.

Q: What is the significance of the current rating difference between L177DFA15SAM4B (7.5A) and DA15S564GTLF (5A per contact)?

A: The current rating indicates the maximum continuous current each connector can safely carry. Applications requiring current levels between 5A and 7.5A must use the L177DFA15SAM4B. Applications with maximum current requirements of 5A or less can use either connector.

Q: Why are the NorComp connectors listed as obsolete?

A: The 173-E15 and 174-E15 series from NorComp Inc. are no longer in active production. Obsolete status indicates that the manufacturer has discontinued these products. While inventory may be available from distributors, long-term supply cannot be guaranteed, and these parts are not recommended for new designs.

Q: Are the NorComp substitutes suitable for RoHS-regulated applications?

A: No. The 173-E15-211R141, 173-E15-211R241, and 174-E15-211R141 are RoHS non-compliant. Applications subject to RoHS regulations (such as consumer electronics sold in the European Union) must use either the L177DFA15SAM4B or DA15S564GTLF, both of which are RoHS compliant.

Q: What is the difference between the flange features on these connectors?

A: The L177DFA15SAM4B and DA15S564GTLF feature unthreaded housing/shell flanges for panel mounting. The NorComp connectors feature mating-side screwlock or standard screw flanges, which provide different mechanical attachment methods. Flange feature compatibility depends on the application's mounting surface design.

Q: Can I use a substitute connector if my application operates at -55°C?

A: The L177DFA15SAM4B and DA15S564GTLF both support -55°C operation. The NorComp connectors (173-E15 and 174-E15 series) have a minimum operating temperature of -50°C and are not suitable for applications requiring -55°C operation.

Q: What does "backset spacing" mean in the context of D-Sub connectors?

A: Backset spacing is the distance from the rear of the connector shell to the center of the solder pins. This dimension determines the physical position of the connector relative to the PCB mounting surface. Different backset spacing values require different PCB hole patterns and cannot be interchanged without PCB modification.

Q: Is packaging format (Tray versus Bulk) a factor in connector substitution?

A: Packaging format affects handling, storage, and ordering quantities but does not affect electrical or mechanical compatibility. The L177DFA15SAM4B is supplied in Tray packaging, while the DA15S564GTLF is supplied in Bulk packaging. Both connectors are functionally equivalent from an application perspective.

Q: What does the GXT™ designation on the DA15S564GTLF contact finish indicate?

A: GXT™ is a proprietary gold contact finish specification from Amphenol ICC. The specific thickness and composition details are not provided in the available technical parameters. Both the L177DFA15SAM4B (30.0µin gold) and DA15S564GTLF (flash gold, GXT™) provide gold contact finishes suitable for signal applications.