L77HDDH78SOL2RM8 Equivalent & Substitute Parts

Part Overview

The L77HDDH78SOL2RM8 is a 78-position D-Sub High Density receptacle connector manufactured by Amphenol ICC. This connector features female sockets with vertical solder termination, designed for through-hole mounting applications. The product is currently active in production with 779 units in stock. Alternative equivalent parts may be required due to supply constraints, procurement lead times, or specific application requirements where substitute connectors meet the electrical and mechanical specifications of the original design.

Substiute Parts

L77HDDH78SOL2RM8

Amphenol ICC (Commercial Products)In Stock: 881L77HDDH78SOL2RM8 Datasheet

Current PartRFQ

09641147232

HARTINGIn Stock: 92009641147232 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of D-Sub connectors is determined by strict alignment of electrical and mechanical parameters. The primary criteria for equivalent parts include:

Critical Substitution Parameters:

• Connector type (Receptacle, Female Sockets)
• Termination method (Solder)
• Mounting configuration (Through Hole)
• Voltage and current ratings (must meet or exceed original specifications)
• Operating temperature range (must encompass original range)
• RoHS and regulatory compliance status
• Contact material and finish specifications

The substitute part 09641147232 from HARTING is listed in the provided substitute list. However, this part exhibits significant differences in core specifications that prevent direct substitution:

• Position count: 9 positions versus 78 positions (incompatible)
• Shell size: Size 1 (DE, E) versus Size 5 (DD, D) High Density (incompatible)
• Number of rows: 2 rows versus 4 rows (incompatible)
• Mounting style: Right Angle versus Vertical (incompatible)

Based on the provided parameters, no true equivalent substitute exists in the supplied list that maintains functional compatibility with the L77HDDH78SOL2RM8.

Parameter Comparison

Engineering Selection Recommendations

The L77HDDH78SOL2RM8 is an active product with adequate inventory (779 units in stock). Direct procurement of the original part number is the appropriate selection for applications requiring a 78-position high-density D-Sub receptacle connector.

The substitute part 09641147232 cannot be used as a functional equivalent due to fundamental incompatibilities in connector architecture:

• The 9-position, 2-row configuration is not interchangeable with the 78-position, 4-row high-density design
• The shell size difference (Size 1 versus Size 5) prevents mechanical mating with existing mating connectors
• The right-angle mounting orientation differs from the vertical orientation of the original part

Both parts maintain active product status and current regulatory compliance (RoHS). However, compliance status alone does not establish substitutability when core mechanical and electrical parameters diverge.

For applications where the L77HDDH78SOL2RM8 is unavailable, equivalent alternatives must be sourced from the same manufacturer series (Amphenol ICC HD series) or from other manufacturers offering 78-position, 4-row, high-density D-Sub receptacles with solder termination and vertical mounting.

Frequently Asked Questions (FAQ)

Q: Can the HARTING 09641147232 be used as a direct replacement for the L77HDDH78SOL2RM8?

A: No. The HARTING part is a 9-position connector with a Size 1 shell, while the Amphenol part is a 78-position connector with a Size 5 high-density shell. These are fundamentally different connector architectures and are not mechanically or electrically interchangeable.

Q: What are the primary factors that determine D-Sub connector substitutability?

A: Substitutability is determined by: number of positions, number of rows, shell size designation, mounting orientation (vertical or right-angle), termination method, voltage rating, current rating, operating temperature range, and contact material specifications. All critical parameters must match or the substitute must exceed the original specifications without introducing incompatibilities.

Q: Does the HARTING connector meet the voltage and current requirements of the original part?

A: The HARTING part has a lower voltage rating (100V versus 250V) but a higher current rating (7.5A versus 3A). However, these electrical advantages do not overcome the mechanical incompatibility resulting from the different connector configurations.

Q: Are both parts RoHS compliant?

A: Yes. The L77HDDH78SOL2RM8 is RoHS Compliant, and the HARTING 09641147232 is ROHS3 Compliant. Both parts meet current regulatory requirements for hazardous substance restrictions.

Q: What packaging differences exist between these parts?

A: The L77HDDH78SOL2RM8 is supplied in Tray packaging, while the HARTING 09641147232 is supplied in Bulk packaging. Packaging format does not affect electrical or mechanical compatibility but may influence procurement and handling procedures.

Q: If the L77HDDH78SOL2RM8 becomes unavailable, what should be specified as an alternative?

A: Specify a connector from the Amphenol ICC HD series or equivalent manufacturer offering a 78-position, 4-row, high-density D-Sub receptacle with solder termination, vertical mounting, and equivalent or superior electrical ratings. The substitute must maintain the same shell size (Size 5, DD/D) and contact configuration.