L77HDDG78SOL2RM8

Part Overview

The L77HDDG78SOL2RM8 is a 78-position D-Sub High Density receptacle connector manufactured by Amphenol ICC. This through-hole solder termination connector features female sockets with a board-side M3 flange and mating-side female screwlock, rated for 3A at 250V. The connector is actively produced and RoHS compliant, designed for applications requiring high-density signal connectivity in harsh environments spanning -55°C to 155°C operating temperatures. Alternative models may be required when specific mounting orientations, different pin counts, enhanced current ratings, or alternative flange configurations are necessary for system integration.

Substiute Parts

L77HDDG78SOL2RM8

Amphenol ICC (Commercial Products)In Stock: 883L77HDDG78SOL2RM8 Datasheet

Current PartRFQ

09641147212

HARTINGIn Stock: 92609641147212 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 09641147212 (HARTING) shares the same connector category (D-Sub, D-Shaped Connectors) and common solder termination methodology. However, this part exhibits significant dimensional and electrical specification differences that restrict its substitution capability. The main part operates with 78 positions across 4 rows in high-density configuration (Shell Size 5), while the substitute operates with 9 positions across 2 rows in standard density configuration (Shell Size 1). Current rating differs substantially (3A versus 7.5A), and voltage rating is reduced (100V versus 250V). Operating temperature range is narrower (-20°C to 125°C versus -55°C to 155°C). Mounting orientation differs (vertical versus right angle), and flange configuration varies (board-side M3 with female screwlock versus housing/shell 4-40 with brackets). Contact material and dielectric composition also differ. These differences indicate the substitute is suitable only for applications with distinctly different electrical and mechanical requirements, and direct pin-for-pin or form-fit-function compatibility does not exist between these two connectors.

Parameter Comparison

Engineering Selection Recommendations

Both the main part L77HDDG78SOL2RM8 and substitute 09641147212 maintain active production status and meet flammability and RoHS compliance requirements suitable for regulated applications. The main part's RoHS compliance status and the substitute's ROHS3 compliance both satisfy current environmental standards. Both connectors achieve UL94 V-0 material flammability rating. Selection between these parts must be determined by application-specific electrical and mechanical requirements. The main part is suited for high-density, high-voltage applications requiring extended temperature operation, while the substitute addresses lower-voltage, lower-position-count applications with higher current capacity and right-angle mounting orientation. Inventory availability of 825 pieces for the main part and 909 pieces for the substitute supports immediate procurement for either specification.

Frequently Asked Questions (FAQ)

Q: Can the 09641147212 directly replace the L77HDDG78SOL2RM8 in an existing system? A: No. The substitute has only 9 positions compared to 78 positions in the main part, operates at 100V versus 250V, and uses right-angle mounting instead of vertical through-hole mounting. Direct substitution is not possible due to incompatible pin counts, electrical ratings, and form factors.

Q: What are the key electrical differences between these connectors? A: The main part supports 250V and 3A across 78 positions. The substitute supports 100V and 7.5A across 9 positions. Operating temperature ranges differ: -55°C to 155°C for the main part versus -20°C to 125°C for the substitute.

Q: Are there compliance differences between these connectors? A: Both connectors are RoHS compliant (main part: RoHS Compliant; substitute: ROHS3 Compliant) and achieve UL94 V-0 flammability rating. Both are active products suitable for production applications.

Q: Why would I select the substitute over the main part? A: The substitute is appropriate for applications requiring right-angle board mounting orientation, higher current density per position (7.5A), and lower voltage specifications (100V). The substitute includes mounting brackets and filter features.

Q: How do the packaging formats differ? A: The main part is supplied in tray packaging, while the substitute is supplied in bulk packaging. This affects handling and storage procedures but does not impact electrical or mechanical function.

Q: Do these connectors share compatible mating halves? A: No. The main part uses shell size 5 (DD, D) high-density configuration, while the substitute uses shell size 1 (DE, E) standard configuration. Mating halves are not interchangeable due to different shell sizes and pin layouts.