L77HDBH44S D-Sub High Density 44-Position Receptacle Equivalent & Substitute Parts

Part Overview

The Amphenol ICC L77HDBH44S is a 44-position D-Sub High Density receptacle connector with female sockets, designed for free-hanging in-line applications with solder cup termination. This connector operates across a wide temperature range and is currently in active product status. Substitute parts are necessary when the original part becomes unavailable, when design requirements shift from free-hanging to panel mount configurations, or when enhanced current ratings are required for signal integrity in demanding applications.

Substiute Parts

L77HDBH44S

Amphenol ICC (Commercial Products)In Stock: 1036L77HDBH44S Datasheet

Current PartRFQ

180-044-202L001

NorComp Inc.In Stock: 956180-044-202L001 Datasheet

SimilarRFQ

180-044-202L011

NorComp Inc.In Stock: 1022180-044-202L011 Datasheet

SimilarRFQ

180-044-203L001

NorComp Inc.In Stock: 1358180-044-203L001 Datasheet

SimilarRFQ

180-044-203L011

NorComp Inc.In Stock: 1194180-044-203L011 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the L77HDBH44S is determined by the following core electrical and mechanical parameters:

Critical Parameters for Substitution:

• Connector type: D-Sub, High Density receptacle, female sockets
• Number of positions: 44
• Number of rows: 3
• Shell size, connector layout: 3 (DB, B) High Density
• Termination method: Solder Cup
• Contact type: Signal
• Shell material: Steel
• Contact material: Brass
• Contact finish: Gold

Parameters Affecting Substitution Scope:

• Mounting type: Affects installation method but does not prevent electrical substitution
• Shell finish: Tin plated (original) versus Nickel plated (alternatives) changes corrosion resistance properties
• Current rating: Original part rated at 3A; substitute parts rated at 5A, which exceeds original requirements
• Operating temperature range: Original -55°C to 105°C; substitutes rated -50°C to 100°C, narrower range
• Flange feature: Cable Side (4-40) versus Housing/Shell (Unthreaded) affects mechanical mounting approach
• Product status: Original is active; some substitutes are obsolete

All four substitute parts (180-044-202L001, 180-044-202L011, 180-044-203L001, 180-044-203L011) maintain identical electrical characteristics and connector pinout, differing only in mounting configuration, shell finish, and product lifecycle status.

Parameter Comparison

Engineering Selection Recommendations

Selection of substitute parts for the L77HDBH44S shall be based on application-specific mounting requirements and product lifecycle status.

For applications requiring in-line free-hanging mounting: The L77HDBH44S remains the preferred selection due to its active product status and matched temperature operating range.

For applications requiring panel mount configuration with unthreaded housing: Select 180-044-203L001 or 180-044-203L011. Both parts hold active product status. The 180-044-203L001 features tin-plated steel shell; the 180-044-203L011 features nickel-plated steel shell. Nickel plating provides enhanced corrosion resistance in harsh environments.

For applications requiring panel mount configuration with cable side 4-40 flange: Select 180-044-202L011 or 180-044-203L011. The 180-044-202L011 features tin-plated steel shell and holds obsolete product status. The 180-044-203L011 features nickel-plated steel shell and holds active product status. For new designs, 180-044-203L011 is preferred.

Operating temperature consideration: The substitute parts are rated -50°C to 100°C, narrower than the original -55°C to 105°C. Applications requiring operation below -50°C or above 100°C shall retain the L77HDBH44S.

Current rating consideration: All substitute parts are rated for 5A, exceeding the original 3A rating. This does not present a limitation for substitution.

Frequently Asked Questions (FAQ)

Q: Can 180-044-203L001 be used in place of L77HDBH44S in a free-hanging application? A: No. The 180-044-203L001 is designed for panel mount applications. Its mounting configuration is incompatible with free-hanging in-line installations.

Q: What is the difference between 180-044-202L011 and 180-044-203L011? A: Both parts are 44-position D-Sub High Density receptors with panel mount and cable side 4-40 flange. The primary differences are: 180-044-202L011 features tin-plated steel shell and holds obsolete product status; 180-044-203L011 features nickel-plated steel shell and holds active product status. For new designs, 180-044-203L011 is specified.

Q: Do the NorComp substitute parts maintain the same pinout and electrical characteristics as the L77HDBH44S? A: Yes. All substitute parts maintain identical 44-position pinout, connector layout (3-row HD configuration), solder cup termination, brass contacts with gold finish, and signal contact type. Electrical substitution is direct.

Q: Why do the substitute parts have higher current ratings (5A versus 3A)? A: The NorComp 180-044 series is rated for 5A per contact, exceeding the Amphenol L77HDBH44S rating of 3A. This higher rating does not affect compatibility and provides improved margin for current-carrying applications.

Q: Are there temperature range limitations when substituting with NorComp parts? A: Yes. The L77HDBH44S operates across -55°C to 105°C, while NorComp substitutes operate -50°C to 100°C. The substitute parts cannot be used in applications requiring operation below -50°C or above 100°C.

Q: What shell finish options are available in the substitute parts? A: NorComp offers both tin-plated and nickel-plated steel shell finishes. Tin-plated versions (180-044-202L001, 180-044-202L011) provide cost efficiency. Nickel-plated versions (180-044-203L001, 180-044-203L011) provide enhanced corrosion resistance in high-humidity or harsh chemical environments.

Q: Which substitute part is recommended for new designs? A: For panel mount applications requiring active product status, 180-044-203L011 is specified for cable side 4-40 flange mounting, or 180-044-203L001 for housing/shell unthreaded mounting. Both feature nickel-plated finish and are ROHS3 compliant.