L77HDDG78SOL2 Equivalent & Substitute Parts

Part Overview

The L77HDDG78SOL2 is a 78-position D-Sub high-density receptacle connector manufactured by Amphenol ICC. This female socket connector features vertical solder termination and is designed for through-hole mounting applications. The connector is currently in active product status with 973 units in stock. Alternative part numbers may be required due to inventory constraints, application-specific mounting requirements, or design modifications that necessitate different connector configurations or electrical ratings.

Substiute Parts

L77HDDG78SOL2

Amphenol ICC (Commercial Products)In Stock: 1076L77HDDG78SOL2 Datasheet

Current PartRFQ

09641147212

HARTINGIn Stock: 92609641147212 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 09641147212 from HARTING is a D-Sub receptacle connector with female sockets and solder termination. However, this part operates under fundamentally different electrical and mechanical constraints compared to the L77HDDG78SOL2. The substitute part is a 9-position connector with a shell size of 1 (DE, E), whereas the main part is a 78-position high-density connector with shell size 5 (DD, D). These differences in position count and shell size indicate that the substitute part is not electrically or mechanically interchangeable for applications requiring the full 78-position configuration.

Substitution logic is based on the following parameters:

• Connector category (D-Sub, D-Shaped Connectors)
• Connector type (Receptacle, Female Sockets)
• Termination method (Solder)
• Mounting type (Through Hole)
• Material flammability compliance (UL94 V-0)
• RoHS compliance status

The substitute part shares these core characteristics but differs significantly in position count, shell size, current rating, voltage rating, and operating temperature range. Selection of a substitute part requires confirmation that the application can accommodate these parameter differences.

Parameter Comparison

Engineering Selection Recommendations

Both the L77HDDG78SOL2 and 09641147212 are active product status connectors with UL94 V-0 flammability compliance and unlimited moisture sensitivity ratings. Both parts are classified under ECCN EAR99 and share the same HTSUS code, indicating regulatory alignment for export and tariff purposes.

The L77HDDG78SOL2 is suitable for applications requiring 78 signal connections with a voltage rating of 250V and operating temperatures from -55°C to 155°C. The 09641147212 is suitable for applications requiring 9 signal connections with a voltage rating of 100V and operating temperatures from -20°C to 125°C.

Selection between these parts depends on the specific application requirements for position count, shell size, voltage rating, current capacity, and operating temperature range. The substitute part cannot be used in applications designed for the 78-position high-density configuration without significant circuit board redesign and connector interface modifications.

Frequently Asked Questions (FAQ)

Q: Can the 09641147212 be used as a direct replacement for the L77HDDG78SOL2?

A: No. The 09641147212 is a 9-position connector with shell size 1 (DE, E), while the L77HDDG78SOL2 is a 78-position high-density connector with shell size 5 (DD, D). These connectors have different physical dimensions, pin counts, and electrical ratings. Direct substitution is not possible without complete circuit board redesign.

Q: What are the key differences in electrical ratings between these connectors?

A: The L77HDDG78SOL2 has a voltage rating of 250V and current rating of 3A per contact. The 09641147212 has a voltage rating of 100V and current rating of 7.5A per contact. Applications requiring the higher voltage rating of 250V cannot use the substitute part.

Q: Are both connectors RoHS compliant?

A: Yes. The L77HDDG78SOL2 is RoHS Compliant, and the 09641147212 is ROHS3 Compliant. Both meet RoHS requirements for restricted substance elimination.

Q: What is the operating temperature difference between these connectors?

A: The L77HDDG78SOL2 operates from -55°C to 155°C, while the 09641147212 operates from -20°C to 125°C. Applications requiring operation below -20°C or above 125°C must use the L77HDDG78SOL2.

Q: Do both connectors use solder termination?

A: Yes. Both the L77HDDG78SOL2 and 09641147212 use solder termination for through-hole mounting applications.

Q: What is the difference in mounting orientation?

A: The L77HDDG78SOL2 features vertical solder mounting. The 09641147212 features through-hole mounting with right-angle orientation. These mounting differences affect printed circuit board layout and connector positioning.

Q: Are both connectors suitable for the same applications?

A: No. The L77HDDG78SOL2 is designed for high-density, multi-position signal distribution applications. The 09641147212 is designed for lower-position-count applications. Application requirements for position count, voltage, current, and temperature range determine connector suitability.