L77DB25SAZ4

Part Overview

The L77DB25SAZ4 is a 25 Position D-Sub Receptacle with female sockets manufactured by Amphenol ICC (Commercial Products). This connector features right-angle solder termination and is designed for applications requiring a through-hole mounting configuration. The product is currently active in production status. Alternative part numbers become necessary when the primary part experiences extended lead times, inventory constraints, or when procurement requires compliance with specific supplier qualifications or regional sourcing requirements.

Substiute Parts

L77DB25SAZ4

Amphenol ICC (Commercial Products)In Stock: 1150L77DB25SAZ4 Datasheet

Current PartRFQ

174-025-212R141

NorComp Inc.In Stock: 1186174-025-212R141 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the L77DB25SAZ4 is determined by strict electrical and mechanical parameter alignment. The substitute part 174-025-212R141 maintains compatibility with the following critical parameters: 25-position D-Sub receptacle configuration, female socket contact type, shell size 3 (DB, B) layout, 2-row arrangement, solder termination, tin-plated steel shell, and gold-plated contacts. Both parts are classified as D-Sub, D-shaped connectors with identical contact count and mating interface specifications.

Substitution is permitted based on these aligned parameters:

• Connector position count: 25
• Shell size and layout: 3 (DB, B)
• Termination method: Solder
• Contact finish: Gold
• Shell material/finish: Steel, Tin Plated
• Contact material: Brass
• Flammability rating: UL94 V-0

Parameter Comparison

Engineering Selection Recommendations

The L77DB25SAZ4 is the primary selection for new designs due to its active product status and current manufacturing availability. The substitute part 174-025-212R141 carries an obsolete product status and should be evaluated only under specific constraints.

When transitioning from 174-025-212R141 to L77DB25SAZ4, the following parameter differences require engineering assessment:

• Current rating differential: L77DB25SAZ4 rated at 7.5A versus 174-025-212R141 at 5A
• Operating temperature range: L77DB25SAZ4 supports -55°C ~ 125°C versus 174-025-212R141 at -50°C ~ 100°C
• Backset spacing: L77DB25SAZ4 at 0.319" (8.10mm) versus 174-025-212R141 at 0.370" (9.40mm)
• Contact finish thickness: L77DB25SAZ4 specifies 8.00µin (0.203µm) versus 174-025-212R141 flash coating
• Mounting configuration: 174-025-212R141 includes panel mount capability; L77DB25SAZ4 is through-hole, right-angle only

The 174-025-212R141 offers ROHS3 compliance, while L77DB25SAZ4 provides RoHS compliance. Both parts meet UL94 V-0 flammability requirements and employ tin-plated steel shells with gold-plated brass contacts. Both units share identical ECCN (EAR99) and HTSUS (8536.69.4040) classifications.

Frequently Asked Questions (FAQ)

Q: Can the 174-025-212R141 directly replace the L77DB25SAZ4 in existing applications?

A: Direct substitution requires verification of current rating adequacy. The 174-025-212R141 is rated for 5A, while the L77DB25SAZ4 operates at 7.5A. Backset spacing differs (0.370" versus 0.319"), which may affect PCB layout compatibility. These parameter differences necessitate design review before implementation.

Q: What are the core compatibility criteria for D-Sub 25-position receptacles?

A: Mechanical compatibility relies on matching connector position count (25), shell size and layout (3 DB/B), row configuration (2 rows), and termination method (solder). Electrical compatibility requires consideration of current rating, voltage rating, and operating temperature range for the specific application. Contact finish and material specifications ensure long-term reliability but do not directly affect mating compatibility.

Q: Why is the 174-025-212R141 marked as obsolete?

A: The product status classification is provided in the component data. Obsolete status indicates the part is no longer in active production. Designs should migrate to active alternatives such as the L77DB25SAZ4 for long-term supply chain security.

Q: How do backset spacing differences impact selection?

A: Backset spacing of 0.319" (L77DB25SAZ4) versus 0.370" (174-025-212R141) affects the connector's depth into the mounting surface. PCB footprints, mounting bracket design, and clearance requirements must accommodate the selected spacing. Design files and mechanical layouts require verification during transition.

Q: Are both parts suitable for high-temperature applications?

A: The L77DB25SAZ4 supports operating temperatures from -55°C to 125°C. The 174-025-212R141 operates within -50°C to 100°C. For applications exceeding 100°C or below -50°C, the L77DB25SAZ4 must be selected.

Q: What is the difference between RoHS and ROHS3 compliance?

A: Both classifications indicate compliance with Restriction of Hazardous Substances directives. RoHS Compliant (L77DB25SAZ4) and ROHS3 Compliant (174-025-212R141) meet specified environmental standards. Regulatory requirements for a specific application determine which compliance status is required.