SML-310PTT86SL Equivalent & Substitute Parts

Part Overview

The SML-310PTT86SL is a green 560nm LED indicator manufactured by Rohm Semiconductor in the SML-31 series. This surface mount device operates at 2.2V forward voltage with a 20mA test current and delivers 4mcd luminous intensity. The component is packaged in 0603 (1608 Metric) form factor with dimensions of 1.60mm L x 0.80mm W and maximum height of 0.90mm. Currently designated as Last Time Buy, this part requires identification of suitable alternatives for ongoing design requirements and inventory planning.

Substiute Parts

SML-310PTT86SL

Rohm SemiconductorIn Stock: 1170SML-310PTT86SL Datasheet

Current PartRFQ

SML-D12P8WT86

Rohm SemiconductorIn Stock: 105152SML-D12P8WT86 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SML-310PTT86SL is determined by the following critical parameters:

• Color: Green (560nm dominant wavelength)
• Package / Case: 0603 (1608 Metric)
• Mounting Type: Surface Mount
• Voltage - Forward (Vf) (Typ): 2.2V
• Current - Test: 20mA
• Physical dimensions: 1.60mm L x 0.80mm W

The substitute part SML-D12P8WT86 meets all primary substitution criteria. Both components share identical wavelength specification, forward voltage, test current, and package form factor. Physical dimensions remain compatible within the 0603 (1608 Metric) standard. The substitute operates within the same electrical parameters required for green LED indication applications.

Parameter Comparison

Engineering Selection Recommendations

The SML-D12P8WT86 serves as the primary substitute for the SML-310PTT86SL. Both components are manufactured by Rohm Semiconductor and maintain electrical compatibility across all critical parameters: identical forward voltage (2.2V), test current (20mA), dominant wavelength (560nm), and package form factor (0603/1608 Metric).

The substitute part carries Active product status with ROHS3 compliance and REACH Unaffected designation, ensuring long-term availability and regulatory alignment. The SML-D12P8WT86 exhibits higher luminous intensity (6.3mcd versus 4mcd) and reduced maximum height (0.65mm versus 0.90mm), both favorable characteristics for space-constrained applications requiring enhanced brightness.

Frequently Asked Questions (FAQ)

Q: Can SML-D12P8WT86 directly replace SML-310PTT86SL in existing designs?

A: Yes. Both components share identical electrical specifications (2.2V forward voltage, 20mA test current), wavelength (560nm), and package form factor (0603/1608 Metric). Physical dimensions are compatible within standard PCB layout tolerances.

Q: What are the differences between these parts?

A: The primary differences are luminous intensity (6.3mcd versus 4mcd) and maximum height (0.65mm versus 0.90mm). The substitute features a diffused lens with white lens color compared to the clear lens of the original part.

Q: Is the higher brightness of SML-D12P8WT86 a concern?

A: The increased luminous intensity (6.3mcd) is within the same product category and wavelength specification. Circuit design should account for this brightness difference if visual consistency is critical.

Q: What is the package compatibility?

A: Both parts use 0603 (1608 Metric) surface mount packaging with identical footprint dimensions (1.60mm L x 0.80mm W). PCB layout and reflow profiles remain unchanged.

Q: Why is SML-310PTT86SL designated Last Time Buy?

A: Last Time Buy status indicates the manufacturer is discontinuing this part number. SML-D12P8WT86 is the recommended active alternative from Rohm Semiconductor for continued production and new designs.