Equivalent & Substitute Parts for Dialight 5973111407

Part Overview

The Dialight 5973111407 is a red LED indication component in 1206 (3016 Metric) surface mount package, featuring 647nm dominant wavelength and 1.7V forward voltage. This part is classified as obsolete, making substitute components necessary for ongoing production and maintenance applications. The original part is RoHS non-compliant, which may require alternative solutions for regulated applications.

Substiute Parts

5973111407

DialightIn Stock: 9675973111407 Datasheet

Current PartRFQ

5973111407F

DialightIn Stock: 62905973111407F Datasheet

Parametric EquivalentRFQ

SML-LX1206SRC-TR

Lumex Opto/Components Inc.In Stock: 3620SML-LX1206SRC-TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the Dialight 5973111407 is determined by the following critical parameters:

• Color: Red
• Wavelength - Peak: 660nm
• Voltage - Forward (Vf): 1.7V
• Current - Test: 20mA
• Mounting Type: Surface Mount
• Package / Case: 1206 form factor

Two substitute parts meet these core electrical and mechanical requirements:

1. 5973111407F (Dialight) - Parametric equivalent with identical electrical specifications and 1206 package, differentiated by packaging format (Tape & Reel) and improved RoHS3 compliance.

2. SML-LX1206SRC-TR (Lumex Opto/Components Inc.) - Similar red LED with matching forward voltage and test current, 1206 package form factor, and active product status. Differences include millicandela rating (25mcd vs. 33.6mcd), viewing angle (140° vs. 70°), and lens geometry (rectangular vs. round).

Parameter Comparison

Engineering Selection Recommendations

5973111407F is the direct parametric equivalent, maintaining identical electrical performance and optical characteristics. This part offers improved RoHS3 compliance over the original and is available in Tape & Reel packaging. However, it retains obsolete product status.

SML-LX1206SRC-TR provides an active product alternative with full RoHS3 compliance. This part maintains electrical compatibility (1.7V forward voltage, 20mA test current) and 1206 package form factor. The reduced millicandela rating (25mcd vs. 33.6mcd) and wider viewing angle (140° vs. 70°) represent optical differences that must be evaluated against application requirements. The rectangular lens geometry differs from the original round lens.

Selection between these substitutes depends on compliance requirements, product lifecycle considerations, and optical performance tolerance in the target application.

Frequently Asked Questions (FAQ)

Q: Can 5973111407F be used as a direct replacement for 5973111407?

A: Yes. The 5973111407F is a parametric equivalent with identical electrical specifications (1.7V forward voltage, 20mA test current), optical characteristics (33.6mcd, 70° viewing angle), and 1206 package form factor. The primary differences are packaging format (Tape & Reel vs. bulk) and improved RoHS3 compliance.

Q: What are the key differences between 5973111407F and SML-LX1206SRC-TR?

A: Both parts share the same forward voltage (1.7V), test current (20mA), peak wavelength (660nm), and 1206 surface mount package. The SML-LX1206SRC-TR differs in millicandela rating (25mcd vs. 33.6mcd), viewing angle (140° vs. 70°), lens geometry (rectangular vs. round), and product status (active vs. obsolete). The Lumex part offers wider viewing angle and active product support.

Q: Are there mechanical compatibility concerns with the Lumex SML-LX1206SRC-TR?

A: The SML-LX1206SRC-TR uses a 1206 (3216 Metric) package versus the original 1206 (3016 Metric). Physical dimensions differ: 3.20mm L x 1.60mm W (Lumex) versus 3.00mm L x 1.50mm W (Dialight). Height also differs (1.10mm vs. 1.51mm). PCB footprint and assembly considerations must be evaluated for mechanical fit.

Q: Which substitute part should be selected for RoHS-regulated applications?

A: Both substitute parts (5973111407F and SML-LX1206SRC-TR) are ROHS3 compliant, whereas the original 5973111407 is RoHS non-compliant. Either substitute meets RoHS requirements.

Q: What is the inventory status of these substitute parts?

A: 5973111407F has 6,246 pieces in stock; SML-LX1206SRC-TR has 3,576 pieces in stock. Both are available as new original components.