SML-022ML8TT86 Equivalent & Substitute Parts

Part Overview

The SML-022ML8TT86 is a dual-color surface mount LED indicator manufactured by Rohm Semiconductor, combining green and red light emission in a single 1210 (3225 Metric) package. This component is classified as Not For New Designs, indicating it has been superseded in Rohm's product portfolio. Organizations requiring this LED configuration must evaluate qualified substitute components that maintain functional compatibility while meeting current design standards and compliance requirements.

Substiute Parts

SML-022ML8TT86

Rohm SemiconductorIn Stock: 3888SML-022ML8TT86 Datasheet

Current PartRFQ

SML-522MU8WT86

Rohm SemiconductorIn Stock: 163543SML-522MU8WT86 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SML-022ML8TT86 is determined by the following criteria:

Mandatory Compatibility Parameters:

• Dual-color configuration (Green and Red independent operation)
• Surface mount technology
• Forward voltage range: 2.1V to 2.2V for both colors
• Test current: 20mA for both colors
• Wavelength compatibility: Green 572nm, Red 620nm–635nm range
• RoHS3 compliance

Acceptable Variation Parameters:

• Package size (alternative 1210 or smaller packages acceptable if PCB layout permits)
• Lens transparency (clear or diffused acceptable based on application requirements)
• Millicandela rating (40mcd Green minimum; Red 20mcd–63mcd acceptable)
• MSL rating (2 or 3 acceptable for standard storage conditions)

The SML-522MU8WT86 qualifies as a functional substitute based on matching color configuration, voltage specifications, current ratings, and compliance certifications, despite differences in package dimensions and lens properties.

Parameter Comparison

Engineering Selection Recommendations

The SML-522MU8WT86 is qualified as a substitute for the SML-022ML8TT86 based on the following engineering criteria:

Electrical Compatibility: Both components operate at equivalent forward voltages (2.1V vs. 2.2V) and identical test currents (20mA), ensuring circuit-level compatibility without redesign of current-limiting resistor networks.

Optical Compatibility: The dominant wavelengths remain within acceptable ranges for standard LED indication applications. The green wavelength is identical (572nm). The red wavelength shift from 635nm to 620nm represents a 15nm variance typical in LED color families and acceptable for general indication purposes.

Compliance Status: Both components maintain ROHS3 compliance and equivalent environmental certifications (REACH Unaffected, EAR99 classification), satisfying regulatory requirements for equivalent substitution.

Product Lifecycle: The substitute component carries Active product status, ensuring continued availability and manufacturing support, whereas the original part is designated Not For New Designs.

Physical Considerations: The substitute employs a smaller 0605 (1513 Metric) package versus the original 1210 (3225 Metric) package. PCB layout verification is required to confirm footprint compatibility. The diffused lens of the substitute provides wider viewing angle characteristics compared to the clear lens of the original, which may be advantageous or require evaluation based on application-specific viewing requirements.

Frequently Asked Questions (FAQ)

Q: Can the SML-522MU8WT86 be used as a direct replacement for the SML-022ML8TT86?

A: Electrical and optical substitution is feasible. The forward voltage difference (0.1V) is within standard tolerance. However, physical package size differs (0605 vs. 1210), requiring PCB layout verification. Lens transparency differs (diffused vs. clear), which affects viewing angle characteristics.

Q: What is the significance of the package size difference?

A: The SML-522MU8WT86 uses a smaller 0605 (1513 Metric) package compared to the original 1210 (3225 Metric) package. This reduction in footprint may allow for higher component density but requires confirmation that the PCB layout accommodates the smaller pad pattern and that mechanical clearance is maintained.

Q: How does the lens transparency difference affect performance?

A: The original SML-022ML8TT86 features a clear lens providing directional light emission with a narrower viewing angle. The substitute SML-522MU8WT86 features a diffused lens, which disperses light over a wider viewing angle. Selection depends on application requirements: directional indication favors clear lenses, while omnidirectional visibility favors diffused lenses.

Q: Are there wavelength compatibility concerns?

A: The green wavelength remains constant at 572nm. The red wavelength shifts from 635nm to 620nm, a 15nm difference. This shift is within the tolerance of standard LED color families and does not affect functional indication performance in typical applications.

Q: What compliance certifications apply to both components?

A: Both components are ROHS3 compliant, REACH Unaffected, and classified as EAR99 for export control purposes. Substitution does not introduce compliance risk.

Q: Why is the original part marked "Not For New Designs"?

A: This designation indicates the SML-022ML8TT86 has been superseded in Rohm's product portfolio. The SML-522MU8WT86 carries Active status, ensuring continued manufacturing support and availability for new designs.