SML-310VTT86 Equivalent & Substitute Parts

Part Overview

The SML-310VTT86 is a red LED indicator from Rohm Semiconductor's SML-31 series, designed for discrete indication applications in 0603 (1608 Metric) surface mount packages. This part features a clear lens with 4mcd brightness rating and 650nm peak wavelength. The product is classified as Not For New Designs, making identification of functionally equivalent alternatives essential for ongoing production support and design flexibility.

Substiute Parts

SML-310VTT86

Rohm SemiconductorIn Stock: 32099SML-310VTT86 Datasheet

Current PartRFQ

SML-D12V1WT86

Rohm SemiconductorIn Stock: 4174SML-D12V1WT86 Datasheet

SimilarRFQ

SML-D12V8WT86

Rohm SemiconductorIn Stock: 90361SML-D12V8WT86 Datasheet

SimilarRFQ

19-213SURC/S530-A2/TR8

Everlight Electronics Co LtdIn Stock: 649619-213SURC/S530-A2/TR8 Datasheet

SimilarRFQ

19-213SURC/S530-A5/TR8

Everlight Electronics Co LtdIn Stock: 81819-213SURC/S530-A5/TR8 Datasheet

SimilarRFQ

19-213SURC/S530-A6/TR8

Everlight Electronics Co LtdIn Stock: 95219-213SURC/S530-A6/TR8 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SML-310VTT86 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Package / Case: 0603 (1608 Metric)
• Mounting Type: Surface Mount
• Color: Red
• Lens Transparency: Clear
• Voltage - Forward (Vf): 2V nominal
• Current - Test: 20mA
• Size / Dimension: 1.60mm L x 0.80mm W

Secondary Consideration Parameters:

• Millicandela Rating (brightness)
• Wavelength - Peak
• Height (Max)
• RoHS and compliance certifications

The substitute parts identified maintain compatibility across the primary criteria while allowing variation in brightness rating and wavelength within the red spectrum, provided the forward voltage and test current remain within acceptable operating ranges.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Clear Lens, Red, 2V Forward Voltage):

The Everlight Electronics parts 19-213SURC/S530-A5/TR8 and 19-213SURC/S530-A6/TR8 provide the closest functional equivalence to the SML-310VTT86. Both maintain identical package dimensions, clear lens transparency, red color, 2V forward voltage, and 20mA test current. These parts are classified as Active products, ensuring continued availability and support. The primary differences are increased brightness ratings (98mcd and 119mcd respectively versus 4mcd) and slightly reduced maximum height (0.70mm versus 0.90mm). Both parts are ROHS3 compliant and suitable for direct circuit substitution where brightness enhancement is acceptable.

Alternative Substitutes (Diffused Lens, Red, 2.2V Forward Voltage):

The Rohm Semiconductor SML-D12V1WT86 and SML-D12V8WT86 offer functional alternatives with diffused lens technology and slightly elevated forward voltage (2.2V). These parts maintain the same package footprint and mounting characteristics but feature increased brightness (40mcd) and reduced maximum height (0.65mm). The diffused lens provides different light distribution characteristics compared to the clear lens of the original part. Both are Active products with ROHS3 compliance. Selection of these alternatives requires circuit validation to confirm compatibility with the 0.2V forward voltage increase and diffused optical properties.

Compliance and Availability:

All identified substitute parts maintain ROHS3 compliance and MSL 3 moisture sensitivity ratings consistent with the original part. The Everlight parts offer superior inventory availability (712–874 pcs) compared to the Rohm alternatives (4100–90300 pcs), supporting production continuity.

Frequently Asked Questions (FAQ)

Q: Can the SML-D12V1WT86 or SML-D12V8WT86 be used as direct replacements for the SML-310VTT86?

A: These parts share the same package, mounting type, and test current but differ in lens transparency (diffused versus clear) and forward voltage (2.2V versus 2V). They are functionally compatible in applications where diffused light output and the 0.2V voltage increase are acceptable. Circuit validation is required.

Q: What is the primary difference between the Everlight 19-213SURC/S530-A5/TR8 and 19-213SURC/S530-A6/TR8?

A: Both parts are identical except for millicandela rating: the A5 variant provides 98mcd brightness while the A6 variant provides 119mcd. Selection depends on required light intensity for the application.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitute parts, including the SML-310VTT86, maintain ROHS3 compliance and are suitable for applications requiring RoHS certification.

Q: Does the reduced maximum height of substitute parts affect PCB layout?

A: The Everlight parts (0.70mm max height) and Rohm SML-D12 series (0.65mm max height) are lower profile than the original SML-310VTT86 (0.90mm max height). This reduction improves clearance in space-constrained designs but requires verification that component height does not conflict with existing mechanical constraints or solder reflow profiles.

Q: What is the impact of increased brightness in substitute parts?

A: The Everlight alternatives provide significantly higher brightness (98–119mcd versus 4mcd). In applications where indicator visibility is critical, this enhancement is beneficial. In designs where brightness is controlled by current limiting resistors, the increased brightness may require resistor value adjustment to maintain consistent visual indication.

Q: Can I mix different substitute parts in the same production run?

A: All identified substitutes maintain compatible package footprints, mounting types, and electrical operating ranges. However, mixing parts with different brightness ratings or lens transparency may result in inconsistent visual appearance across the assembly. Standardization on a single substitute part is recommended for production consistency.