SML-110YTT86 Equivalent & Substitute Parts

Part Overview

The SML-110YTT86 is a yellow 590nm LED indicator manufactured by Rohm Semiconductor, designed for discrete indication applications. This surface mount, right-angle component operates at 2.1V forward voltage with a 6.3mcd brightness rating in a 1208 (3020 Metric) package measuring 3.00mm × 1.60mm.

The SML-110YTT86 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this component.

Substiute Parts

SML-110YTT86

Rohm SemiconductorIn Stock: 3147SML-110YTT86 Datasheet

Current PartRFQ

SML-A12Y8TT86

Rohm SemiconductorIn Stock: 4171SML-A12Y8TT86 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SML-110YTT86 are identified based on the following critical parameters that determine functional equivalence:

• Color and Wavelength: Yellow 590nm dominant wavelength
• Mounting Configuration: Surface mount, right-angle orientation
• Manufacturer: Rohm Semiconductor (EXCELED™ series compatibility)
• Electrical Characteristics: Forward voltage (Vf) and test current (20mA)
• Optical Properties: Colorless, clear lens with rectangle flat-top style
• Compliance: ROHS3 compliance and EAR99 classification

The substitute part SML-A12Y8TT86 shares the same color, wavelength, mounting type, lens properties, and compliance certifications. Variations in package size, brightness rating, and forward voltage are documented in the parameter comparison table below.

Parameter Comparison

Engineering Selection Recommendations

The SML-A12Y8TT86 is an active substitute for the obsolete SML-110YTT86. Both components are manufactured by Rohm Semiconductor and maintain ROHS3 compliance and EAR99 classification.

Key considerations for selection:

Brightness: The SML-A12Y8TT86 provides 63mcd compared to 6.3mcd in the main part, representing a 10× increase in luminous intensity.

Forward Voltage: The substitute operates at 2.2V versus 2.1V, a 0.1V difference within typical LED tolerance ranges.

Package and Dimensions: The substitute uses a smaller 1611 (0605) package at 1.60mm × 1.15mm × 0.65mm height, compared to the 1208 (3020 Metric) package at 3.00mm × 1.60mm × 2.00mm height. PCB layout and mechanical clearance must be verified for compatibility.

Moisture Sensitivity: The substitute has MSL 3 (168 Hours) versus MSL 2 (1 Year) for the main part, requiring adjusted storage and handling protocols.

Selection of the SML-A12Y8TT86 is appropriate for applications where the increased brightness and smaller footprint are compatible with circuit design requirements and PCB layout constraints.

Frequently Asked Questions (FAQ)

Q: Can the SML-A12Y8TT86 directly replace the SML-110YTT86 without circuit modifications?

A: The substitute shares identical color, wavelength, mounting type, and test current specifications. However, the 0.1V forward voltage difference (2.1V to 2.2V) and 10× brightness increase require circuit verification. Current-limiting resistor values may require adjustment to maintain proper LED operation and brightness levels.

Q: What are the primary differences between these two parts?

A: The main differences are package size (1208 versus 1611), brightness rating (6.3mcd versus 63mcd), forward voltage (2.1V versus 2.2V), and moisture sensitivity level (MSL 2 versus MSL 3). Both maintain identical color, wavelength, mounting orientation, and compliance certifications.

Q: Are there mechanical compatibility concerns when switching from SML-110YTT86 to SML-A12Y8TT86?

A: Yes. The substitute is significantly smaller (1.60mm × 1.15mm × 0.65mm versus 3.00mm × 1.60mm × 2.00mm). PCB footprint, solder pad layout, and mechanical clearance must be re-evaluated. The reduced height may affect optical performance in applications with specific spatial constraints.

Q: Do both parts meet the same compliance and regulatory requirements?

A: Both components are ROHS3 compliant, REACH unaffected, and classified as EAR99. Regulatory compliance is equivalent between the two parts.

Q: What is the impact of the brightness difference on application performance?

A: The SML-A12Y8TT86 produces 10 times greater luminous intensity (63mcd versus 6.3mcd). Applications requiring specific brightness levels must adjust current-limiting resistor values or implement dimming circuits to achieve equivalent visual output.

Q: How does moisture sensitivity affect component handling?

A: The SML-A12Y8TT86 has MSL 3 (168 Hours), requiring storage in controlled humidity environments and baking before reflow soldering. The original SML-110YTT86 has MSL 2 (1 Year), allowing longer shelf life without environmental controls. Procurement and assembly processes must be adjusted accordingly.