SLR-342YCT32 Equivalent & Substitute Parts

Part Overview

The SLR-342YCT32 is a yellow LED indicator in T-1 through-hole radial package manufactured by Rohm Semiconductor. This component is classified as Not For New Designs, indicating it has been superseded in the product lifecycle. The part delivers 16mcd luminous intensity at 587nm dominant wavelength with a 2.1V forward voltage and 40° viewing angle. Finding equivalent substitute parts is necessary for applications requiring continued sourcing, design updates, or inventory management when the original part becomes unavailable.

Substiute Parts

SLR-342YCT32

Rohm SemiconductorIn Stock: 815SLR-342YCT32 Datasheet

Current PartRFQ

SLR-343YCT32

Rohm SemiconductorIn Stock: 973SLR-343YCT32 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SLR-342YCT32 is determined by strict equivalence across the following critical parameters:

• Color and Wavelength: Yellow indication at 587nm dominant wavelength (or equivalent peak wavelength in the yellow spectrum)
• Optical Characteristics: 16mcd luminous intensity, clear lens, round domed top, 3.10mm lens diameter, 40° viewing angle
• Electrical Specifications: 2.1V forward voltage, 10mA test current
• Mechanical Compatibility: Through-hole radial mounting, T-1 package, compatible height profile
• Regulatory Compliance: ROHS3 compliant, REACH unaffected status

The SLR-343YCT32 meets all these criteria and is identified as a parametric equivalent. Differences in packaging format (Tape & Box versus Cut Tape) and product status do not affect functional substitution in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

The SLR-343YCT32 is the direct parametric equivalent for the SLR-342YCT32. Both parts are ROHS3 compliant and REACH unaffected, meeting identical regulatory requirements. The SLR-343YCT32 carries Active product status, making it the preferred choice for new applications and ongoing production. The maximum height difference of 0.20mm (5.40mm versus 5.60mm) is within typical PCB layout tolerances for through-hole components and does not affect functional compatibility. The wavelength specifications (587nm dominant versus 585nm peak) both fall within the yellow LED spectrum and produce equivalent visual indication. Selection between these parts should be based on packaging availability and supply chain requirements rather than electrical or optical performance.

Frequently Asked Questions (FAQ)

Q: Can the SLR-343YCT32 directly replace the SLR-342YCT32 in existing designs?

A: Yes. Both parts share identical electrical specifications (2.1V forward voltage, 10mA test current), optical characteristics (16mcd, 40° viewing angle, clear yellow lens), and mechanical form factor (T-1 through-hole radial package). The 0.20mm height difference is not functionally significant for standard PCB applications.

Q: What is the difference between Tape & Box and Cut Tape packaging?

A: Tape & Box (TB) packaging provides components on tape with a protective box for storage and handling. Cut Tape (CT) packaging provides individual components or small quantities cut from the reel. Both formats contain identical components; the difference is in supply and handling convenience. Selection depends on order quantity and inventory management requirements.

Q: Why is the SLR-342YCT32 marked as Not For New Designs?

A: This designation indicates the part has been superseded in the manufacturer's product lifecycle. The SLR-343YCT32 is the active replacement. For new designs, the SLR-343YCT32 should be specified to ensure long-term availability and manufacturer support.

Q: Are there compliance differences between these parts?

A: No. Both parts are ROHS3 compliant and REACH unaffected. They meet identical regulatory and environmental standards.

Q: What wavelength specification should I use for optical design calculations?

A: The SLR-342YCT32 specifies 587nm dominant wavelength, while the SLR-343YCT32 specifies 585nm peak wavelength. Both values represent yellow light in the same spectral region. For practical indication applications, these wavelengths are optically equivalent and produce indistinguishable visual appearance.