SML-D12FWT86 Equivalent & Substitute Parts

Part Overview

The SML-D12FWT86 is a green 565nm LED indicator in 0603 (1608 Metric) surface mount package manufactured by Rohm Semiconductor. This component is classified as Not For New Designs, indicating it has been superseded in the product lifecycle. Finding equivalent substitute parts is necessary for maintenance, repair, and legacy system support where continued availability of the original part number cannot be guaranteed.

Substiute Parts

SML-D12FWT86

Rohm SemiconductorIn Stock: 4189SML-D12FWT86 Datasheet

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SML-D13FWT86C

Rohm SemiconductorIn Stock: 12891SML-D13FWT86C Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SML-D12FWT86 is determined by strict alignment of the following critical parameters:

• Package / Case: 0603 (1608 Metric) surface mount form factor
• Color: Green wavelength in the 565nm dominant wavelength range
• Mounting Type: Surface Mount
• Lens Configuration: White diffused lens with rectangle flat-top style
• Electrical Characteristics: Forward voltage (Vf) within acceptable operating range, 20mA test current compatibility
• Physical Dimensions: 1.60mm L x 0.80mm W footprint, 0.65mm maximum height
• Compliance: RoHS3 compliant, MSL 3 rating

The SML-D13FWT86C qualifies as a direct substitute based on matching all critical parameters within the allowed electrical and mechanical tolerances for this product category.

Parameter Comparison

Engineering Selection Recommendations

The SML-D13FWT86C is the qualified substitute for the SML-D12FWT86. Selection between these parts should be based on the following engineering criteria:

Product Status Consideration: The SML-D12FWT86 carries a Not For New Designs status, while the SML-D13FWT86C is Active. For applications requiring long-term component availability and supply chain stability, the SML-D13FWT86C is the preferred choice.

Compliance and Certification: Both parts meet RoHS3 compliance and carry identical MSL 3 ratings. The SML-D13FWT86C includes AEC-Q102 automotive qualification, providing additional assurance for applications requiring automotive-grade reliability.

Electrical Performance: The SML-D13FWT86C operates at a slightly lower forward voltage (2.1V vs. 2.2V) and delivers higher luminous intensity (22mcd vs. 18mcd). These differences fall within acceptable substitution parameters for green LED indicator applications.

Physical and Mechanical Compatibility: Both parts share identical package dimensions, mounting type, and lens configuration, ensuring direct PCB footprint compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can the SML-D13FWT86C be used as a direct replacement for the SML-D12FWT86 on existing PCBs?

A: Yes. Both parts share identical 0603 (1608 Metric) package dimensions, surface mount footprint, and mechanical specifications. No PCB layout changes are required.

Q: What is the difference in forward voltage between these parts?

A: The SML-D12FWT86 has a typical forward voltage of 2.2V, while the SML-D13FWT86C operates at 2.1V. This 0.1V difference is within normal operating tolerances for LED indicator circuits and does not affect substitution suitability.

Q: Why does the SML-D13FWT86C have higher brightness (22mcd vs. 18mcd)?

A: The SML-D13FWT86C delivers increased luminous intensity at the same 20mA test current. This represents an improvement in optical performance and does not compromise compatibility in applications where the original part was used.

Q: What packaging options are available for each part?

A: The SML-D12FWT86 is supplied in Tape & Reel (TR) packaging. The SML-D13FWT86C is available in Cut Tape (CT) and Digi-Reel® packaging options, providing flexibility for different procurement and assembly workflows.

Q: Are both parts RoHS compliant?

A: Yes. Both the SML-D12FWT86 and SML-D13FWT86C are ROHS3 compliant and carry identical Moisture Sensitivity Level 3 ratings.

Q: Does the SML-D13FWT86C have any additional certifications?

A: The SML-D13FWT86C includes AEC-Q102 automotive qualification, indicating it meets automotive-grade reliability standards. The SML-D12FWT86 does not carry this certification.