SML-310MTT86 Equivalent & Substitute Parts

Part Overview

The SML-310MTT86 is a green LED indicator in 0603 (1608 Metric) surface mount package manufactured by Rohm Semiconductor. This part operates at 2.2V forward voltage with 20mA test current and delivers 16mcd luminous intensity through a clear, colorless lens. The product is classified as Not For New Designs, making identification of functionally equivalent alternatives essential for ongoing production support and design flexibility.

Key Parameters

Parameter	Value
Manufacturer Part Number	SML-310MTT86
Manufacturer	Rohm Semiconductor
Color	Green
Package / Case	0603 (1608 Metric)
Mounting Type	Surface Mount
Voltage - Forward (Vf) (Typ)	2.2V
Current - Test	20mA
Millicandela Rating	16mcd
Lens Transparency	Clear
Wavelength - Peak	570nm
RoHS Status	ROHS3 Compliant
Product Status	Not For New Designs

Substitute Part Grouping Explanation

Substitution eligibility for the SML-310MTT86 is determined by the following parameters:

Package / Case: 0603 (1608 Metric) surface mount
Mounting Type: Surface Mount
Voltage - Forward (Vf) (Typ): 2.2V ±0.2V tolerance range
Current - Test: 20mA nominal
Color: Green or Yellow-Green spectrum
Lens Transparency: Clear or Diffused
RoHS Status: ROHS3 Compliant

Substitute parts must maintain compatibility across PCB footprint, electrical operating point, and regulatory compliance. Variations in millicandela rating, lens color, and wavelength peak are permitted within the green spectrum range (565nm–575nm) provided forward voltage and package dimensions remain within specified tolerances.

Parameter Comparison

Parameter	SML-310MTT86	SML-D12M8WT86	SML-D12M1WT86	19-213SYGC/S530-E1/TR8	LTST-C190GKT	SM0603GCL
Manufacturer	Rohm Semiconductor	Rohm Semiconductor	Rohm Semiconductor	Everlight Electronics Co Ltd	Lite-On Inc.	Bivar Inc.
Color	Green	Green	Yellow-Green	Yellow-Green	Green	Green
Package / Case	0603 (1608 Metric)	0603 (1608 Metric)	0603 (1608 Metric)	0603 (1608 Metric)	0603 (1608 Metric)	0603 (1608 Metric)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Voltage - Forward (Vf) (Typ)	2.2V	2.2V	2.2V	2V	2.1V	1.9V
Current - Test	20mA	20mA	20mA	20mA	10mA	2mA
Millicandela Rating	16mcd	25mcd	40mcd	28mcd	6mcd	3.6mcd
Lens Transparency	Clear	Diffused	Diffused	Clear	Clear	Clear
Wavelength - Peak	570nm	—	—	575nm	565nm	575nm
Size / Dimension	1.60mm L x 0.80mm W	1.60mm L x 0.80mm W	1.60mm L x 0.80mm W	1.60mm L x 0.80mm W	1.60mm L x 0.80mm W	1.60mm L x 0.80mm W
Height (Max)	0.90mm	0.65mm	0.65mm	0.70mm	0.90mm	0.60mm
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Not For New Designs	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All listed substitute parts maintain ROHS3 compliance and surface mount 0603 (1608 Metric) package compatibility with the SML-310MTT86. Selection among substitutes depends on application-specific requirements:

SML-D12M8WT86 (Rohm Semiconductor, Active): Direct manufacturer alternative with identical forward voltage (2.2V) and test current (20mA). Diffused lens provides wider light distribution compared to clear lens. Reduced maximum height (0.65mm vs 0.90mm) accommodates space-constrained designs. Higher luminous intensity (25mcd) suitable for applications requiring increased visibility.

SML-D12M1WT86 (Rohm Semiconductor, Active): Yellow-Green spectrum variant maintaining 2.2V forward voltage and 20mA test current. Diffused lens and highest luminous intensity (40mcd) among substitutes. Reduced maximum height (0.65mm) benefits compact PCB layouts. Color shift from pure green to yellow-green affects visual appearance in indicator applications.

19-213SYGC/S530-E1/TR8 (Everlight Electronics Co Ltd, Active): Yellow-Green spectrum with forward voltage of 2V and 20mA test current. Clear lens preserves directional light output. Wavelength peak (575nm) aligns with green spectrum range. Viewing angle specification (120°) provides defined light distribution characteristics.

LTST-C190GKT (Lite-On Inc., Active): Green spectrum with 2.1V forward voltage and reduced test current (10mA). Clear lens maintains directional output. Lower luminous intensity (6mcd) suitable for low-brightness indicator applications. Viewing angle specification (130°) indicates wider light distribution.

SM0603GCL (Bivar Inc., Active): Green spectrum with lowest forward voltage (1.9V) and minimal test current (2mA). Clear lens and lowest luminous intensity (3.6mcd) for ultra-low-power indicator circuits. Reduced maximum height (0.60mm) for space-critical designs. Moisture sensitivity level MSL 4 (72 Hours) differs from other substitutes.

Frequently Asked Questions (FAQ)

Q: Can SML-D12M8WT86 directly replace SML-310MTT86 in existing designs?

A: SML-D12M8WT86 maintains identical forward voltage (2.2V) and test current (20mA), ensuring circuit compatibility. The diffused lens provides wider light distribution compared to the clear lens of SML-310MTT86. Reduced maximum height (0.65mm vs 0.90mm) requires PCB clearance verification. Both parts are ROHS3 compliant and use identical 0603 (1608 Metric) footprint.

Q: What is the difference between clear and diffused lens options?

A: Clear lens (SML-310MTT86, 19-213SYGC/S530-E1/TR8, LTST-C190GKT, SM0603GCL) provides directional light output with concentrated brightness in the forward direction. Diffused lens (SML-D12M8WT86, SML-D12M1WT86) scatters light across a wider viewing angle, reducing peak brightness but improving visibility from off-axis positions.

Q: Are yellow-green substitutes suitable for applications requiring pure green indication?

A: Yellow-green spectrum parts (SML-D12M1WT86, 19-213SYGC/S530-E1/TR8) emit light in the 572nm–575nm range, which appears visually distinct from pure green (565nm–570nm). Application acceptance depends on color perception requirements and end-user specifications. Electrical compatibility remains maintained.

Q: How do luminous intensity variations affect circuit design?

A: Luminous intensity (millicandela rating) determines perceived brightness but does not affect electrical circuit operation. Forward voltage and test current remain the primary design parameters. Higher intensity substitutes (SML-D12M8WT86 at 25mcd, SML-D12M1WT86 at 40mcd) increase visibility without requiring circuit modification. Lower intensity substitutes (LTST-C190GKT at 6mcd, SM0603GCL at 3.6mcd) reduce power consumption in low-brightness applications.

Q: What packaging considerations apply to these substitutes?

A: All substitutes use 0603 (1608 Metric) surface mount package with identical PCB footprint dimensions (1.60mm L x 0.80mm W). Maximum height varies from 0.60mm (SM0603GCL) to 0.90mm (SML-310MTT86, LTST-C190GKT). Designs with height constraints below 0.65mm require selection from SML-D12M8WT86, SML-D12M1WT86, 19-213SYGC/S530-E1/TR8, or SM0603GCL.

Q: Which substitute offers the lowest power consumption?

A: SM0603GCL operates at 1.9V forward voltage with 2mA test current, providing the lowest power consumption. LTST-C190GKT operates at 2.1V with 10mA test current. Both parts maintain ROHS3 compliance and 0603 (1608 Metric) package compatibility.

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