SLR-343YY3F Equivalent & Substitute Parts

Part Overview

The SLR-343YY3F is a yellow diffused through-hole LED manufactured by Rohm Semiconductor, designed for indication applications with a dominant wavelength of 587nm. This component is currently in active production status with 2935 units available in inventory. The SLR-343YY3F operates at a forward voltage of 2.1V with a test current of 10mA and provides a brightness rating of 10 millicandela with a 40° viewing angle. Finding equivalent substitute parts may be necessary due to supply chain constraints, design revisions, or inventory management requirements.

Substiute Parts

SLR-343YY3F

Rohm SemiconductorIn Stock: 2988SLR-343YY3F Datasheet

Current PartRFQ

SLR-342YY3F

Rohm SemiconductorIn Stock: 2296SLR-342YY3F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SLR-343YY3F are identified based on strict electrical and mechanical parameter matching. The primary substitution criteria are:

• Color specification: Yellow
• Lens transparency: Diffused
• Forward voltage: 2.1V nominal
• Test current: 10mA
• Millicandela rating: 10mcd
• Wavelength - Dominant: 587nm
• Mounting type: Through Hole
• Lens size: 3.10mm diameter
• Viewing angle: 40°

The SLR-342YY3F qualifies as a parametric equivalent based on these electrical and optical characteristics. While the SLR-342YY3F has a slightly reduced maximum height of 5.40mm compared to the SLR-343YY3F at 5.60mm, all critical electrical parameters and optical specifications remain identical, making it suitable for direct substitution in applications where the physical height difference is accommodated by the circuit board layout.

Parameter Comparison

Engineering Selection Recommendations

The SLR-343YY3F is the preferred choice for new designs due to its active product status. The SLR-342YY3F is classified as "Not For New Designs," indicating that Rohm Semiconductor has transitioned this part to end-of-life status. Both parts maintain ROHS3 compliance and identical electrical specifications. Selection between these parts should be based on design phase: the SLR-343YY3F for new product development and the SLR-342YY3F only for legacy system maintenance or existing inventory utilization where the 0.20mm height reduction is mechanically acceptable.

Frequently Asked Questions (FAQ)

Q: Can the SLR-342YY3F directly replace the SLR-343YY3F in existing designs?

A: Yes, from an electrical and optical standpoint. The SLR-342YY3F matches all critical parameters including forward voltage, test current, brightness, wavelength, and viewing angle. The only difference is a 0.20mm reduction in maximum height. Mechanical compatibility depends on the specific circuit board layout and component clearance requirements.

Q: Why is the SLR-342YY3F marked "Not For New Designs"?

A: This designation indicates that Rohm Semiconductor has discontinued active development and production prioritization for this part. The SLR-343YY3F is the current recommended part for new product designs.

Q: Are both parts RoHS compliant?

A: Yes, both the SLR-343YY3F and SLR-342YY3F are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the significance of the 587nm wavelength specification?

A: The 587nm dominant wavelength defines the yellow color output of the LED. Both substitute parts maintain this identical wavelength specification, ensuring consistent color appearance across designs.

Q: Are there any inventory considerations for substitution?

A: The SLR-343YY3F has 2935 units in stock, while the SLR-342YY3F has 2200 units available. For ongoing production requirements, the SLR-343YY3F offers greater inventory availability.