L77DA15SAJ4 Equivalent & Substitute Parts

Part Overview

The L77DA15SAJ4 is a 15-position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This female sockets connector features right-angle solder termination and is designed for through-hole mounting applications. The part is currently in active production status with 1097 units in stock inventory.

Substitute parts are necessary when the L77DA15SAJ4 becomes unavailable, when alternative packaging formats are required, or when design specifications permit the use of equivalent connector configurations. Several manufacturers produce functionally similar 15-position D-Sub receptacles that meet comparable electrical and mechanical requirements.

Substiute Parts

L77DA15SAJ4

Amphenol ICC (Commercial Products)In Stock: 1172L77DA15SAJ4 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 eligibility for the L77DA15SAJ4 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Connector type: Receptacle, Female Sockets
• Position count: 15 positions
• Row configuration: 2 rows
• Shell size: DA/A (Size 2)
• Termination method: Solder
• Mounting orientation: Right angle

Secondary Compatibility Criteria:

• Flange feature configuration (Housing/Shell unthreaded vs. Mating side screwlock)
• Backset spacing tolerance
• Current rating capacity
• Operating temperature range
• Contact finish specifications
• Regulatory compliance (RoHS status)

The substitute parts listed below maintain the primary compatibility criteria. However, variations exist in secondary parameters such as backset spacing, current rating, shell finish, and regulatory compliance status. These variations must be evaluated against specific application requirements before implementation.

Parameter Comparison

Engineering Selection Recommendations

DA15S564GTLF (Amphenol ICC FCI) - Preferred Active Substitute

The DA15S564GTLF is the recommended substitute when the L77DA15SAJ4 is unavailable. Both parts are manufactured by Amphenol ICC, share active product status, and maintain RoHS compliance. Both connectors operate across the identical temperature range (-55°C ~ 125°C) and carry the same 300V voltage rating. The primary difference is backset spacing (0.409" vs. 0.319") and current rating per contact (5A vs. 7.5A). Applications requiring the full 7.5A current capacity of the L77DA15SAJ4 must account for the reduced 5A per contact specification of the DA15S564GTLF. Packaging differs (Bulk vs. Tray), which may affect procurement and handling procedures.

173-E15-211R141 and 173-E15-211R241 (NorComp Inc.) - Obsolete Alternatives

Both NorComp 173-E series parts are classified as obsolete. These connectors feature yellow chromate plating on the steel shell (versus tin plating on the L77DA15SAJ4) and are not RoHS compliant. Operating temperature range is reduced to -50°C ~ 100°C. Current rating is limited to 5A. Voltage rating is not specified. Backset spacing is 0.283" (7.20mm), which differs from the L77DA15SAJ4. The 173-E15-211R141 includes female screwlock flanges, while the 173-E15-211R241 includes standard screws. These parts are suitable only for legacy system maintenance or applications where RoHS compliance is not required and reduced operating temperature range is acceptable.

174-E15-211R141 (NorComp Inc.) - Obsolete Alternative

The 174-E15-211R141 is classified as obsolete with the same limitations as the 173-E series parts: non-RoHS compliant, reduced operating temperature range (-50°C ~ 100°C), and 5A current rating. The backset spacing of 0.370" (9.40mm) is notably different from the L77DA15SAJ4. This part includes female screwlock flanges and yellow chromate plating. Use is restricted to legacy applications where RoHS compliance is not mandated.

Regulatory Compliance Consideration

For applications subject to RoHS directives or equivalent environmental regulations, only the L77DA15SAJ4 and DA15S564GTLF are suitable. All NorComp alternatives are non-compliant and must not be used in regulated applications.

Frequently Asked Questions (FAQ)

Q: Can the DA15S564GTLF directly replace the L77DA15SAJ4 in all applications?

A: The DA15S564GTLF is mechanically and electrically compatible for most applications. However, the reduced current rating (5A per contact vs. 7.5A) must be evaluated against circuit requirements. Backset spacing differs (0.409" vs. 0.319"), which may affect PCB layout compatibility. Both parts maintain identical voltage rating (300V) and operating temperature range (-55°C ~ 125°C).

Q: Why are the NorComp parts listed as obsolete?

A: Obsolete status indicates these parts are no longer in active production. Manufacturers discontinue products for various reasons, including market demand shifts, technology evolution, or regulatory changes. Obsolete parts may still be available from inventory but lack manufacturer support and future availability guarantees.

Q: What is the significance of backset spacing differences?

A: Backset spacing is the distance from the mounting flange to the rear of the connector body. Variations in backset spacing affect PCB layout, panel cutout dimensions, and mating connector alignment. The L77DA15SAJ4 has 0.319" backset spacing. Substitute parts with different backset spacing (0.283", 0.370", or 0.409") may require PCB redesign or panel modification.

Q: Are the NorComp parts suitable for new designs?

A: No. NorComp parts are obsolete and non-RoHS compliant. New designs must use active, RoHS-compliant parts. The L77DA15SAJ4 or DA15S564GTLF are the appropriate choices for new product development.

Q: What is the difference between tray and bulk packaging?

A: Tray packaging provides organized, protective storage for individual components, typically used for automated assembly processes. Bulk packaging involves loose components in larger quantities, suitable for manual assembly or inventory management. The L77DA15SAJ4 is supplied in tray packaging, while the DA15S564GTLF is supplied in bulk packaging. Procurement and handling procedures may differ accordingly.

Q: Does contact finish thickness affect connector performance?

A: Contact finish thickness influences contact durability and mating cycle life. The L77DA15SAJ4 specifies 8.00µin (0.203µm) gold plating, while substitute parts specify flash plating. Flash plating provides thinner coverage but maintains electrical conductivity and corrosion resistance for standard applications. Applications requiring extended mating cycles or harsh environments may benefit from the thicker plating of the L77DA15SAJ4.

Q: Can I use NorComp parts in RoHS-regulated applications?

A: No. RoHS non-compliant parts cannot be used in applications subject to RoHS directives or equivalent environmental regulations. Only the L77DA15SAJ4 and DA15S564GTLF are RoHS compliant and suitable for regulated applications.

Q: What is the GXT™ contact finish on the DA15S564GTLF?

A: GXT™ is a proprietary gold plating specification from Amphenol ICC. The specific composition and performance characteristics are defined by Amphenol ICC standards. For detailed specifications, consult Amphenol ICC technical documentation.

Q: Are all listed parts compatible with the same mating connectors?

A: All listed parts are 15-position D-Sub receptacles with DA/A shell size and 2-row configuration. They are mechanically compatible with standard 15-position D-Sub plugs. However, backset spacing variations may affect mating connector alignment and panel fit. Verify mating connector specifications before implementation.