L777HDB44POL2

Part Overview

The L777HDB44POL2 is a 44-position D-Sub High Density plug connector manufactured by Amphenol ICC (Commercial Products). This connector features male pins, through-hole solder termination, and a 3-row high-density shell configuration. The product is active and maintains full RoHS and REACH compliance. Substitute parts are necessary when specific flange features, contact current ratings, or shell material finishes differ from design requirements, or when alternative supply chains are required for inventory optimization.

Substiute Parts

L777HDB44POL2

Amphenol ICC (Commercial Products)In Stock: 1002L777HDB44POL2 Datasheet

Current PartRFQ

10090928-P444VLF

Amphenol ICC (FCI)In Stock: 161110090928-P444VLF Datasheet

SimilarRFQ

10090928-P444XLF

Amphenol ICC (FCI)In Stock: 155610090928-P444XLF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the L777HDB44POL2 are determined by maintaining compatibility across the following critical parameters:

• Connector Style & Type: All substitutes must be D-Sub High Density plugs with 44 positions, 3 rows, and male pins
• Shell Size & Layout: DB/B High Density (3) configuration must be preserved
• Termination Method: Solder termination required
• Operating Environment: Temperature range of -55°C to 105°C and 250V voltage rating must be met or exceeded
• Compliance: RoHS compliance and UL94 V-0 flammability rating must be maintained
• Contact Finish: Gold-plated contacts required

Substitutes may vary in the following parameters without affecting basic connector function:

• Flange Feature: Housing/shell configurations may differ (unthreaded versus board lock with screw options)
• Shell Material Finish: Tin plating versus nickel plating acceptable
• Contact Finish Thickness: Flash or specified thickness acceptable
• Current Rating: Designs rated at 2.5A per contact are acceptable where application allows
• Contact Material: Copper alloy acceptable as alternative to brass

Parameter Comparison

Engineering Selection Recommendations

The L777HDB44POL2 (Amphenol ICC Commercial Products, tin-plated) and the 10090928-P444VLF and 10090928-P444XLF (Amphenol ICC FCI, nickel-plated) are all active products with full RoHS compliance and UL94 V-0 flammability certification. Selection between these parts should be based on the following technical considerations:

L777HDB44POL2 is appropriate for applications requiring unthreaded housing configuration and 3A per contact current rating. This part features tin plating on the steel shell and brass contacts with 16.0µin gold finish thickness.

10090928-P444VLF is appropriate for applications requiring board-side screw locking on both board and mating sides (4-40 threads). This part features nickel-plated steel shell and copper alloy contacts with flash gold finish, rated at 2.5A per contact. Board lock feature provides mechanical retention on the connector.

10090928-P444XLF is appropriate for applications requiring board-side screw locking (4-40 threads) without mating-side female screwlock. This part features nickel-plated steel shell and copper alloy contacts with flash gold finish, rated at 2.5A per contact.

All parts maintain compatibility with the 44-position, 3-row, high-density DB/B configuration and share identical dielectric materials, operating temperature ranges, and voltage ratings. The current rating difference (3A versus 2.5A per contact) must be evaluated against application power distribution requirements.

Frequently Asked Questions (FAQ)

Q: Can the L777HDB44POL2 be directly replaced with the 10090928-P444VLF or 10090928-P444XLF?

A: Direct replacement is possible from a connector geometry and mating perspective, as all three parts share the same 44-position, 3-row high-density DB/B shell configuration, solder termination, and pin layout. However, mechanical differences must be evaluated: the L777HDB44POL2 uses unthreaded housing, while the 10090928 series includes board-side screw locking features. If your PCB design includes threaded mounting holes (4-40), the 10090928 series is appropriate. If your design uses unthreaded holes, the L777HDB44POL2 is required, or the 10090928 series can be used if the mounting holes are upgraded to 4-40 threads. Current rating differences must also be considered.

Q: What is the difference between the two 10090928 substitutes (P444VLF and P444XLF)?

A: The primary difference is in the flange feature. The 10090928-P444VLF includes female screwlock threads (4-40) on the mating side in addition to board-side screw locking, providing locking capability on both connector sides. The 10090928-P444XLF includes board-side screw locking only (4-40 threads). Both parts are electrically and mechanically compatible with each other; selection depends on whether dual-side mechanical retention is required in your application.

Q: Why does the L777HDB44POL2 specify 3A current rating while the 10090928 substitutes specify 2.5A per contact?

A: Current rating differences reflect design variations in the contact material and conductor cross-section. The L777HDB44POL2 uses brass contacts with 16.0µin gold plating, while the 10090928 series uses copper alloy contacts with flash gold plating. Both designs meet the same voltage rating (250V) and flammability standards. If your application requires sustained current above 2.5A per contact, the L777HDB44POL2 is the appropriate selection. If your application operates at or below 2.5A per contact, either part is acceptable from a current-carrying perspective.

Q: Are all three parts RoHS and REACH compliant?

A: Yes. The L777HDB44POL2, 10090928-P444VLF, and 10090928-P444XLF are all RoHS Compliant with REACH Unaffected status. All three parts carry UL94 V-0 flammability certification and are suitable for applications with these compliance requirements.

Q: What is the difference between tin plating and nickel plating on the shell?

A: The L777HDB44POL2 features tin-plated steel shell, while both 10090928 substitutes feature nickel-plated steel shell. Tin plating provides corrosion resistance suitable for general industrial and consumer applications. Nickel plating offers enhanced corrosion resistance and electrical conductivity, particularly in humid or chemically aggressive environments. Both finishes maintain the same contact finish (gold) and operating temperature range (-55°C to 105°C). Shell material finish selection may be driven by environmental exposure and connector longevity requirements.