L77DB25S - 25 Position D-Sub Receptacle, Female Sockets Connector

Part Overview

The L77DB25S is a 25 Position D-Sub Receptacle connector manufactured by Amphenol ICC (Commercial Products). This connector features female sockets in a D-shaped housing with solder cup termination, designed for applications requiring robust signal connectivity. The product is Active status and RoHS Compliant. Alternative models may be required to accommodate specific application constraints, inventory availability, or operational parameter preferences.

Substiute Parts

L77DB25S

Amphenol ICC (Commercial Products)In Stock: 940L77DB25S Datasheet

Current PartRFQ

09643117210

HARTINGIn Stock: 75309643117210 Datasheet

SimilarRFQ

09643117240

HARTINGIn Stock: 99309643117240 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility is determined by matching the following critical parameters:

• Connector Type & Configuration: Receptacle, Female Sockets with 25 positions in 2-row layout
• Shell Size & Connector Layout: D-Sub Size 3 (DB, B)
• Mounting Type: Free Hanging (In-Line)
• Termination Type: Solder Cup
• Flange Feature: Housing/Shell (Unthreaded)
• Material Flammability Rating: UL94 V-0
• Current Rating: 7.5A
• Operating Temperature Range: -55°C ~ 125°C
• Contact Form: Machined

The substitute parts 09643117210 and 09643117240 (both HARTING) match all critical parameters. Variations in shell material finish, contact finish specifications, dielectric material, and voltage rating do not preclude substitution for applications operating within the lower voltage envelope and temperature specifications of the substitutes.

Parameter Comparison

Engineering Selection Recommendations

All three D-Sub connectors maintain Active product status. The L77DB25S provides a 300V voltage rating, making it suitable for higher voltage applications. The HARTING substitutes (09643117210 and 09643117240) are rated at 100V and are appropriate for lower voltage applications within that specification. All parts are RoHS Compliant or ROHS3 Compliant, supporting environmental regulatory requirements. The L77DB25S features gold-plated contacts and thermoplastic glass-filled dielectric material, while HARTING substitutes specify copper alloy contacts and PCT dielectric material. Selection should be based on voltage requirement compatibility and contact material availability for your application's electrical and environmental demands.

Frequently Asked Questions (FAQ)

Q: Can HARTING part 09643117210 or 09643117240 directly replace L77DB25S? A: These parts are electrically and mechanically compatible as substitutes for applications operating at or below 100V. The L77DB25S is suitable for 300V applications. Verify your system voltage requirements before selection.

Q: What is the difference between L77DB25S and the HARTING substitutes? A: The primary differences are voltage rating (L77DB25S at 300V versus HARTING at 100V), shell material finish (tin plated versus unfinished), contact finish (gold versus not specified), and dielectric material composition. All maintain identical connector geometry, position count, mounting type, and current rating.

Q: Are the HARTING parts 09643117210 and 09643117240 interchangeable with each other? A: Both HARTING parts share identical electrical and mechanical specifications. Selection between them may be driven by inventory availability.

Q: What RoHS compliance status applies to these parts? A: L77DB25S is RoHS Compliant. HARTING parts (09643117210 and 09643117240) are ROHS3 Compliant. Both satisfy RoHS environmental requirements.

Q: What is the moisture sensitivity level (MSL) for these connectors? A: All three parts carry MSL 1 (Unlimited), indicating no moisture sensitivity precautions are required during storage or handling.

Q: Can these parts be used in the same assembly? A: Yes, they share identical mechanical interfaces (Shell Size 3, DB/B layout, 25 positions, 2 rows) and mounting type (Free Hanging In-Line). Mating compatibility is maintained across all three parts.