L77DAH15SAJ4 Equivalent & Substitute Parts Reference

Part Overview

The L77DAH15SAJ4 is a 15-position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This female socket connector features right-angle solder termination and board-side mounting with 4-40 flange configuration. The part is currently in active product status with 1064 units in stock inventory.

D-Sub connectors of this specification are essential for applications requiring standardized 15-pin signal distribution in industrial, telecommunications, and legacy equipment environments. Substitute parts become necessary when the primary part reaches end-of-life status, when alternative sourcing is required for supply chain continuity, or when design revisions necessitate compatible alternatives with equivalent electrical and mechanical characteristics.

Substiute Parts

L77DAH15SAJ4

Amphenol ICC (Commercial Products)In Stock: 1138L77DAH15SAJ4 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 L77DAH15SAJ4 is determined by strict equivalence across the following critical parameters:

Primary Equivalence Criteria:

• Connector type: D-Sub receptacle, female sockets
• Position count: 15 positions
• Row configuration: 2 rows
• Shell size and layout: 2 (DA, A)
• Termination method: Solder
• Mounting orientation: Right angle, through hole

Secondary Compatibility Parameters:

• Flange feature configuration (board-side vs. mating-side mounting affects PCB layout compatibility)
• Backset spacing (affects connector depth and clearance requirements)
• Current and voltage ratings (must meet or exceed application requirements)
• Operating temperature range (must encompass application environment)
• Contact finish and shell material (affects signal integrity and environmental resistance)

The substitute parts listed below maintain equivalence in primary criteria. Variations in secondary parameters are noted to enable informed selection based on specific application constraints.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: DA15S564GTLF (Amphenol ICC)

The DA15S564GTLF is the preferred substitute for the L77DAH15SAJ4. Both parts are manufactured by Amphenol ICC, share active product status, maintain RoHS compliance, and support the full operating temperature range of -55°C to 125°C with 300V voltage rating. The DA15S564GTLF features GXT™ gold contact finish and board lock mounting feature. The primary design consideration is backset spacing variation (0.409" vs. 0.319"), which requires PCB layout verification to ensure clearance compatibility.

Secondary Alternatives: 173-E15-211R141, 173-E15-211R241, 174-E15-211R141 (NorComp)

The NorComp 173-E and 174-E series parts provide functional equivalence in connector topology and termination method. However, these parts carry obsolete product status and RoHS non-compliance, limiting their application to legacy equipment maintenance or non-regulated environments. The reduced current rating (5A vs. 7.5A) and narrower operating temperature range (-50°C to 100°C) represent additional constraints. Backset spacing differences (0.283" to 0.370") require PCB layout modification. These alternatives are suitable only when primary and preferred options are unavailable and application requirements permit the noted parameter reductions.

Compliance Considerations:

For applications subject to RoHS regulations or requiring active product support, selection must be limited to L77DAH15SAJ4 or DA15S564GTLF. NorComp alternatives are restricted to legacy system repairs or non-regulated applications.

Frequently Asked Questions (FAQ)

Q: Can the DA15S564GTLF directly replace the L77DAH15SAJ4 without PCB modification?

A: The DA15S564GTLF maintains electrical and mechanical equivalence in connector type, position count, shell size, and termination method. However, backset spacing differs (0.409" vs. 0.319"), requiring verification of PCB hole pattern and component clearance. If the PCB layout accommodates the increased backset spacing, direct substitution is possible. If not, PCB redesign is necessary.

Q: What is the significance of flange feature differences between board-side and mating-side configurations?

A: Flange feature determines mounting orientation and mechanical interface. The L77DAH15SAJ4 uses board-side flange (4-40), mounting directly to the PCB. NorComp alternatives use mating-side flange, affecting connector orientation and panel mounting compatibility. This difference requires mechanical redesign if substituting between these configurations.

Q: Are the NorComp parts suitable for new product designs?

A: No. The 173-E and 174-E series parts carry obsolete product status and RoHS non-compliance. These parts are restricted to legacy equipment maintenance only. New product designs must use active, RoHS-compliant parts: L77DAH15SAJ4 or DA15S564GTLF.

Q: What does the current rating difference (7.5A vs. 5A) mean for application compatibility?

A: Current rating specifies maximum continuous current per contact. The L77DAH15SAJ4 supports 7.5A per contact, while NorComp alternatives support 5A per contact. If the application requires current exceeding 5A per contact, NorComp parts are not suitable. If application current is 5A or less, both options are compatible.

Q: How do contact finish differences affect signal integrity?

A: The L77DAH15SAJ4 features 8.00µin (0.203µm) gold plating, while DA15S564GTLF uses flash gold with GXT™ enhancement, and NorComp parts use flash gold. All three finishes provide adequate signal integrity for D-Sub applications. Flash gold finishes reduce material cost while maintaining contact resistance specifications. Selection based on finish thickness is not necessary for standard signal applications.

Q: What is the impact of operating temperature range differences?

A: The L77DAH15SAJ4 and DA15S564GTLF support -55°C to 125°C. NorComp alternatives support -50°C to 100°C. If the application operates outside the -50°C to 100°C range, NorComp parts are not suitable. If application temperature remains within -50°C to 100°C, both options are compatible.

Q: Can packaging type (Tray vs. Bulk) affect substitution decisions?

A: Packaging type affects handling, storage, and inventory management but does not affect electrical or mechanical compatibility. The L77DAH15SAJ4 is supplied in Tray packaging, while DA15S564GTLF is supplied in Bulk packaging. Both are suitable for production assembly. Packaging selection depends on manufacturing process requirements and inventory management practices.

Q: What does RoHS compliance mean for part selection?

A: RoHS (Restriction of Hazardous Substances) compliance indicates the part meets EU directive 2011/65/EU, restricting lead, cadmium, mercury, and other hazardous substances. RoHS-compliant parts (L77DAH15SAJ4, DA15S564GTLF) are required for products sold in regulated markets. RoHS non-compliant parts (NorComp series) are restricted to legacy equipment or unregulated applications.