SML-310FTT86 Equivalent & Substitute Parts

Part Overview

The SML-310FTT86 is a green LED indication component in 0603 (1608 Metric) surface mount package manufactured by Rohm Semiconductor. This part is classified as Not For New Designs, indicating it has reached end-of-life status. Organizations currently using this component in active applications require qualified substitute parts that maintain mechanical and electrical compatibility while offering active product status and continued supply availability.

Substiute Parts

SML-310FTT86

Rohm SemiconductorIn Stock: 788SML-310FTT86 Datasheet

Current PartRFQ

SML-D12M1WT86

Rohm SemiconductorIn Stock: 207653SML-D12M1WT86 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SML-310FTT86 is determined by the following critical parameters:

• Package Compatibility: Both main and substitute parts must use 0603 (1608 Metric) surface mount package with identical footprint dimensions (1.60mm L x 0.80mm W)
• Mounting Type: Surface mount configuration must be maintained
• Regulatory Compliance: RoHS3 compliance and MSL rating of 3 (168 Hours) must be preserved
• Physical Constraints: Maximum height of 0.90mm and lens size of 1.20mm x 0.80mm establish the physical envelope

The SML-D12M1WT86 qualifies as a substitute based on matching package specifications, mounting type, and compliance certifications. While color and lens transparency differ from the original part, the mechanical compatibility and regulatory status enable functional substitution in applications where the specific optical characteristics can be accommodated.

Parameter Comparison

Engineering Selection Recommendations

The SML-D12M1WT86 is qualified as a substitute for the SML-310FTT86 based on the following engineering criteria:

• Mechanical Compatibility: Identical footprint and package dimensions ensure PCB layout compatibility without redesign
• Regulatory Alignment: Both parts maintain ROHS3 compliance and identical MSL ratings, satisfying supply chain compliance requirements
• Product Status: The substitute part carries Active status, ensuring continued availability and supply chain support, addressing the obsolescence risk of the Not For New Designs main part
• Physical Envelope: The substitute part's maximum height of 0.65mm is within the 0.90mm constraint, providing additional design margin

Organizations transitioning from SML-310FTT86 must account for differences in color (Yellow-Green vs. Green) and lens transparency (Diffused vs. Clear) in their optical design validation.

Frequently Asked Questions (FAQ)

Q: Can the SML-D12M1WT86 be used as a direct drop-in replacement for the SML-310FTT86?

A: The SML-D12M1WT86 is mechanically and electrically compatible at the package level. Both parts use identical 0603 (1608 Metric) surface mount packages with matching footprint dimensions. However, the color difference (Yellow-Green vs. Green) and lens transparency difference (Diffused vs. Clear) require validation in the specific application context.

Q: What are the key differences between these parts?

A: The primary differences are color (Green vs. Yellow-Green), lens transparency (Clear vs. Diffused), and electrical specifications. The SML-D12M1WT86 provides specified electrical parameters (2.2V forward voltage, 20mA test current, 40mcd brightness) while the SML-310FTT86 specifications are not provided. The substitute part is also 0.25mm shorter in maximum height.

Q: Are both parts compliant with current regulations?

A: Both parts are ROHS3 compliant and carry identical MSL ratings of 3 (168 Hours), meeting current regulatory requirements for electronic component procurement.

Q: Why is the SML-310FTT86 marked as Not For New Designs?

A: This designation indicates the part has reached end-of-life status and is no longer recommended for new product development. The SML-D12M1WT86, with Active product status, is the qualified path forward for continued supply assurance.

Q: What should be considered when implementing this substitution?

A: Optical characteristics must be validated in the application. The yellow-green color and diffused lens of the substitute part may affect visibility and color perception compared to the clear green original. Circuit design parameters should accommodate the specified 2.2V forward voltage and 20mA test current of the substitute part.