L77DA15SAM4B D-Sub Receptacle 15-Position Equivalent & Substitute Parts

Part Overview

The L77DA15SAM4B is a 15-position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This connector features female sockets in a right-angle, through-hole solder configuration with a 2-row layout (Shell Size 2, DA/A). The part is currently in active product status with 640 pieces available in inventory.

Substitute parts are necessary when the primary part becomes unavailable, when alternative compliance certifications are required, or when design specifications allow for compatible alternatives from different manufacturers. The substitute parts listed maintain the core D-Sub receptacle functionality while varying in specific electrical and mechanical parameters.

Substiute Parts

L77DA15SAM4B

Amphenol ICC (Commercial Products)In Stock: 659L77DA15SAM4B 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 D-Sub receptacle connectors is determined by the following parameters:

Core Compatibility Parameters:

• Connector Type: Receptacle, Female Sockets
• Number of Positions: 15
• Number of Rows: 2
• Shell Size, Connector Layout: 2 (DA, A)
• Mounting Type: Through Hole, Right Angle
• Termination: Solder

Electrical Performance Parameters:

• Current Rating (Amps)
• Voltage Rating
• Operating Temperature Range

Physical and Material Parameters:

• Shell Material and Finish
• Contact Finish and Thickness
• Flange Feature
• Backset Spacing

Compliance Parameters:

• Material Flammability Rating
• RoHS Status
• REACH Status

The substitute parts listed maintain the core D-Sub receptacle configuration with 15 positions in a 2-row layout and right-angle solder termination. Variations exist in current rating, backset spacing, shell finish, flange features, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

DA15S564GTLF (Amphenol ICC FCI)

The DA15S564GTLF is the primary substitute for the L77DA15SAM4B. Both parts are manufactured by Amphenol ICC, maintain active product status, and are RoHS compliant. Both operate across the identical temperature range (-55°C ~ 125°C) and carry a 300V voltage rating. The DA15S564GTLF features a GXT™ gold contact finish and includes board lock features. The primary difference is the reduced current rating of 5A per contact compared to the 7.5A rating of the L77DA15SAM4B. This part is suitable for applications where the lower current rating is acceptable and where RoHS compliance and active product status are required.

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

These NorComp parts are obsolete products with RoHS non-compliance status. Both feature a reduced current rating of 5A and a narrower operating temperature range (-50°C ~ 100°C). 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 the reduced electrical specifications are acceptable.

174-E15-211R141 (NorComp Inc.)

The 174-E15-211R141 is an obsolete NorComp product with RoHS non-compliance status. It features a 5A current rating, reduced operating temperature range (-50°C ~ 100°C), and female screwlock flanges. The backset spacing of 0.370" (9.40mm) differs from the primary part. This part is suitable only for legacy system maintenance where RoHS compliance is not required.

Recommendation Summary:

For new designs and applications requiring active product status and RoHS compliance, use DA15S564GTLF. For legacy system support where RoHS compliance is not required, the NorComp alternatives (173-E15-211R141, 173-E15-211R241, 174-E15-211R141) are available, provided the reduced current rating and operating temperature range are acceptable.

Frequently Asked Questions (FAQ)

Q: Can the DA15S564GTLF be used as a direct replacement for the L77DA15SAM4B?

A: The DA15S564GTLF is compatible for applications where the 5A per contact current rating is acceptable. Both parts share the same connector type, position count, row configuration, shell size, mounting type, termination method, voltage rating, and operating temperature range. The primary difference is the current rating reduction from 7.5A to 5A per contact.

Q: What is the significance of the backset spacing differences among the substitute parts?

A: Backset spacing determines the distance from the mounting surface to the mating face of the connector. The L77DA15SAM4B has a backset spacing of 0.590" (14.99mm), while substitutes range from 0.283" to 0.409". Different backset spacing requires different PCB layout and mounting hole positioning. Verify that the selected substitute's backset spacing is compatible with the existing mechanical design.

Q: Why are the NorComp parts listed as obsolete?

A: Product status indicates the manufacturer's current support level. Obsolete products are no longer in active production and may have limited availability. While inventory may be available from distributors, obsolete parts do not receive design updates or manufacturing improvements.

Q: What does RoHS compliance mean for connector selection?

A: RoHS (Restriction of Hazardous Substances) compliance indicates that the part meets European Union regulations restricting certain hazardous materials. The L77DA15SAM4B and DA15S564GTLF are RoHS compliant, while the NorComp alternatives are not. RoHS compliance is required for many applications, particularly in consumer electronics and regulated industries.

Q: Are the flange feature differences between parts significant?

A: Yes. The L77DA15SAM4B and DA15S564GTLF feature unthreaded housing/shell flanges, while the NorComp parts feature mating-side flanges with either female screwlock or standard screw configurations. Flange type affects how the connector is mounted and secured to the mating connector. Verify that the selected substitute's flange type is compatible with the mating connector.

Q: What is the difference between tin-plated and yellow chromate-plated shell finishes?

A: Shell finish affects corrosion resistance and environmental durability. Tin plating (used on L77DA15SAM4B and DA15S564GTLF) provides good corrosion resistance and is RoHS compliant. Yellow chromate plating (used on NorComp parts) provides corrosion resistance but is not RoHS compliant. The choice depends on environmental exposure and compliance requirements.

Q: Can I use a substitute part with a lower current rating in my application?

A: Only if your application's actual current requirements do not exceed the substitute part's rating. The L77DA15SAM4B is rated for 7.5A, while most substitutes are rated for 5A per contact. Verify that your circuit design does not require the higher current capacity before selecting a lower-rated substitute.

Q: What is the significance of the contact finish thickness specification?

A: Contact finish thickness affects durability and wear resistance. The L77DA15SAM4B specifies 8.00µin (0.203µm) of gold plating, while substitutes specify flash thickness. Flash plating is a minimal coating applied for corrosion protection. Thicker plating provides greater durability for high-cycle mating applications.

Q: Are there packaging differences between the main part and substitutes?

A: Yes. The L77DA15SAM4B is supplied in tray packaging, while the DA15S564GTLF is supplied in bulk packaging. Tray packaging provides individual compartments for each connector, while bulk packaging supplies connectors in loose form. Verify packaging compatibility with your assembly process requirements.

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

A: GXT™ is a proprietary gold contact finish technology. The specific composition and performance characteristics are defined by Amphenol ICC. It provides gold contact plating suitable for signal-level applications in D-Sub connectors.