SML-412MWT86 Equivalent & Substitute Parts

Part Overview

The SML-412MWT86 is a green diffused LED in 0603 (1608 Metric) surface mount package manufactured by Rohm Semiconductor. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and design requirements. The part delivers green light indication at 2.1V forward voltage with 40mcd brightness rating in a compact 1.60mm × 0.80mm footprint with 0.50mm maximum height.

Substiute Parts

SML-412MWT86

Rohm SemiconductorIn Stock: 5210SML-412MWT86 Datasheet

Current PartRFQ

SML-D12M8WT86

Rohm SemiconductorIn Stock: 36308SML-D12M8WT86 Datasheet

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SML-E12M8WT86

Rohm SemiconductorIn Stock: 35349SML-E12M8WT86 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SML-412MWT86 are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Color: Green
• Lens Transparency: Diffused
• Lens Color: White
• Package / Case: 0603 (1608 Metric)
• Mounting Type: Surface Mount
• Current - Test: 20mA
• Configuration: Standard
• Lens Style: Rectangle with Flat Top
• Lens Size: 1.20mm × 0.80mm
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 3 (168 Hours)

Allowable Parameter Variations:

• Voltage - Forward (Vf): 2.1V to 2.2V (within typical LED forward voltage tolerance)
• Millicandela Rating: 25mcd to 40mcd (brightness variation acceptable for indication applications)
• Wavelength - Peak: 570nm to 572nm (within green spectrum range)
• Height (Max): 0.46mm to 0.65mm (within 0603 package specification)

The two substitute parts listed below meet all critical parameters and fall within allowable variations for electrical and mechanical characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both SML-D12M8WT86 and SML-E12M8WT86 are active product alternatives to the obsolete SML-412MWT86. Selection between these substitutes is determined by packaging and height requirements:

SML-E12M8WT86 is the preferred substitute when PCB height constraints are critical, as it offers the lowest profile at 0.46mm maximum height while maintaining all electrical and optical specifications within acceptable tolerance.

SML-D12M8WT86 is suitable when packaging format flexibility is required, offering Cut Tape and Digi-Reel options in addition to standard reel packaging, with a maximum height of 0.65mm.

Both substitutes operate at 2.2V forward voltage (0.1V higher than the original) and deliver 25mcd brightness (15mcd lower than the original), representing acceptable variations for green LED indication applications. All three parts maintain identical RoHS3 compliance and MSL 3 moisture sensitivity ratings.

Frequently Asked Questions (FAQ)

Q: Can SML-D12M8WT86 and SML-E12M8WT86 be used interchangeably with SML-412MWT86?

A: Both parts meet the critical electrical and mechanical parameters for substitution. The primary difference is packaging format and maximum height. SML-E12M8WT86 provides lower profile (0.46mm vs 0.50mm), while SML-D12M8WT86 offers additional packaging options (Cut Tape & Digi-Reel).

Q: What is the impact of the 0.1V forward voltage increase from 2.1V to 2.2V?

A: The 0.1V increase falls within typical LED forward voltage tolerance and requires minimal circuit adjustment. Current-limiting resistor values may require recalculation for precise brightness control, but the change is negligible for standard indication applications.

Q: Does the 15mcd brightness reduction affect functionality?

A: The SML-412MWT86 operates at 40mcd while substitutes deliver 25mcd. For indication-only applications, this reduction is acceptable. Applications requiring specific brightness levels should evaluate actual luminous intensity requirements against the 25mcd specification.

Q: Are there packaging considerations when switching from SML-412MWT86?

A: SML-E12M8WT86 is supplied in Tape & Reel format, while SML-D12M8WT86 offers Cut Tape and Digi-Reel options. Verify your assembly process compatibility with the selected packaging format.

Q: Do all three parts meet the same compliance standards?

A: Yes. SML-412MWT86, SML-D12M8WT86, and SML-E12M8WT86 are all ROHS3 compliant with MSL 3 (168 Hours) moisture sensitivity rating and REACH unaffected status.

Q: What is the wavelength difference between 570nm and 572nm?

A: Both wavelengths fall within the green spectrum range. The 2nm difference is imperceptible to human vision and does not affect functional performance in indication applications.