SLB-25MG3F Equivalent & Substitute Parts

Part Overview

The SLB-25MG3F is a green diffused through-hole LED manufactured by Rohm Semiconductor, designed for indication applications with a dominant wavelength of 572nm. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The part operates at a forward voltage of 2.1V with a test current of 10mA and features a rectangular flat-top lens measuring 5.00mm x 2.00mm.

Substiute Parts

SLB-25MG3F

Rohm SemiconductorIn Stock: 1162SLB-25MG3F Datasheet

Current PartRFQ

LTL-433G

Lite-On Inc.In Stock: 18246LTL-433G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SLB-25MG3F is based on the following critical parameters that must align for functional compatibility:

• Color and wavelength range (green indication, 569nm–572nm dominant wavelength)
• Lens configuration (diffused, rectangular flat-top, 5.00mm x 2.00mm)
• Forward voltage (2.1V nominal)
• Mounting type (through-hole radial package)
• Physical dimensions (height compatibility within 7.50mm–7.70mm range)
• Regulatory compliance (ROHS3 Compliant, EAR99 classification)

The LTL-433G from Lite-On Inc. meets these substitution criteria as an active product with compatible electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The LTL-433G is suitable as a substitute for the obsolete SLB-25MG3F based on the following factors:

• Both components maintain ROHS3 compliance and identical moisture sensitivity ratings, ensuring regulatory and environmental compatibility.
• Electrical parameters (forward voltage, wavelength) are within acceptable tolerance for green LED indication applications.
• Physical form factor and mounting type are identical, allowing direct board-level substitution without layout modifications.
• The LTL-433G is an active product with established supply availability, addressing the obsolescence of the SLB-25MG3F.
• The higher test current (20mA vs. 10mA) and increased brightness (3.7mcd vs. 1mcd) represent performance improvements suitable for indication circuits.

Frequently Asked Questions (FAQ)

Q: Can the LTL-433G replace the SLB-25MG3F in existing designs?

A: Yes. Both components share identical forward voltage (2.1V), lens configuration, and mounting type. The LTL-433G operates at a higher test current and brightness level, which is compatible with standard indication circuit designs.

Q: What are the key differences between these parts?

A: The primary differences are product status (obsolete vs. active), brightness rating (1mcd vs. 3.7mcd), test current (10mA vs. 20mA), dominant wavelength (572nm vs. 569nm), viewing angle (160° vs. 140°), and height (7.70mm vs. 7.50mm). All differences remain within acceptable substitution parameters.

Q: Are there any compliance concerns with substitution?

A: No. Both components are ROHS3 compliant with identical moisture sensitivity levels and EAR99 ECCN classification.

Q: Does the viewing angle difference affect compatibility?

A: The LTL-433G has a narrower viewing angle (140° vs. 160°). This is compatible for indication applications but should be evaluated if the design requires the wider 160° viewing angle of the original part.

Q: What is the impact of the higher brightness rating?

A: The LTL-433G provides 3.7mcd compared to 1mcd for the SLB-25MG3F. This increased brightness is suitable for indication applications and does not create compatibility issues in standard circuit designs.