SLR-342VCT32 Equivalent & Substitute Parts

Part Overview

The SLR-342VCT32 is a red LED indicator with T-1 through-hole radial package from Rohm Semiconductor. This part is classified as "Not For New Designs," making identification of active equivalent and substitute parts essential for ongoing production support and new design alternatives. The SLR-342VCT32 delivers 25mcd brightness at 2V forward voltage with a 630nm dominant wavelength and 40° viewing angle, designed for discrete indication applications in industrial and consumer electronics.

Substiute Parts

SLR-342VCT32

Rohm SemiconductorIn Stock: 1095SLR-342VCT32 Datasheet

Current PartRFQ

SLR-342VCTB7

Rohm SemiconductorIn Stock: 2871SLR-342VCTB7 Datasheet

Parametric EquivalentRFQ

SLR-343VCT32

Rohm SemiconductorIn Stock: 8457SLR-343VCT32 Datasheet

Parametric EquivalentRFQ

LTL-4222N

Lite-On Inc.In Stock: 51236LTL-4222N Datasheet

SimilarRFQ

LTL1CHJETNN

Lite-On Inc.In Stock: 826LTL1CHJETNN Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SLR-342VCT32 is determined by strict alignment of electrical and mechanical parameters. The critical substitution criteria are:

Electrical Parameters: Forward voltage (Vf) within 2V nominal, test current at 10mA or compatible operating current, red color specification, and wavelength in the 620–650nm range.

Mechanical Parameters: Through-hole radial mounting, T-1 package form factor, lens size 3.0–3.10mm diameter, and maximum height within 5.40–5.85mm.

Compliance Parameters: ROHS3 compliance and EAR99 ECCN classification required for all substitutes.

Parts are grouped into two categories:

Parametric Equivalents (SLR-342VCTB7, SLR-343VCT32) maintain identical or near-identical electrical specifications and mechanical dimensions, differing only in packaging format or minor wavelength peak specification.

Similar Parts (LTL-4222N, LTL1CHJETNN) meet core electrical and mechanical requirements but introduce variations in brightness (29mcd, 180mcd), forward voltage (2.05V), viewing angle (45°), or test current (20mA). These parts are suitable only where application tolerance permits brightness and electrical parameter variation.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Parametric Equivalents):

SLR-342VCTB7 and SLR-343VCT32 are the primary substitutes for the SLR-342VCT32. Both maintain 25mcd brightness, 2V forward voltage, 10mA test current, and through-hole radial mounting. SLR-343VCT32 is preferred for new designs due to active product status, though it introduces a 0.20mm height increase (5.60mm vs. 5.40mm). SLR-342VCTB7 maintains identical dimensions but retains "Not For New Designs" status.

For Applications with Tolerance for Parameter Variation:

LTL-4222N (Lite-On Inc.) is suitable where 4mcd brightness increase (29mcd vs. 25mcd) and 5° viewing angle expansion (45° vs. 40°) are acceptable. Height increases to 5.85mm. This part is active and ROHS3 compliant.

LTL1CHJETNN (Lite-On Inc.) is applicable only in applications requiring significantly higher brightness (180mcd). This part introduces 0.05V forward voltage increase (2.05V vs. 2V), doubled test current (20mA vs. 10mA), and reduced height (5.20mm). Use is restricted to designs where brightness enhancement and increased current draw are specified requirements.

Compliance Consideration:

All substitute parts maintain ROHS3 compliance and EAR99 ECCN classification, ensuring regulatory alignment with the original SLR-342VCT32.

Frequently Asked Questions (FAQ)

Q: Can SLR-343VCT32 replace SLR-342VCT32 in existing designs?

A: Yes. SLR-343VCT32 is a parametric equivalent with identical electrical specifications (25mcd, 2V, 10mA, 40° viewing angle). The 0.20mm height difference (5.60mm vs. 5.40mm) is within typical PCB layout tolerance for through-hole components. SLR-343VCT32 is preferred because it carries active product status.

Q: What is the difference between SLR-342VCTB7 and SLR-343VCT32?

A: Both are parametric equivalents with identical electrical performance. The primary difference is packaging format: SLR-342VCTB7 is supplied in Tape & Box, while SLR-343VCT32 is supplied in Cut Tape. SLR-343VCT32 has active product status; SLR-342VCTB7 does not.

Q: Can LTL-4222N be used as a direct substitute?

A: LTL-4222N is a similar part, not a parametric equivalent. It increases brightness to 29mcd and viewing angle to 45°. Use only if the application design permits these parameter changes. Height increases to 5.85mm.

Q: Why does LTL1CHJETNN have 180mcd brightness?

A: LTL1CHJETNN is a high-brightness variant designed for applications requiring enhanced visibility. It operates at 2.05V forward voltage and 20mA test current. Use only where brightness increase and higher current draw are specified design requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitutes (SLR-342VCTB7, SLR-343VCT32, LTL-4222N, LTL1CHJETNN) are ROHS3 compliant and carry EAR99 ECCN classification, matching the original SLR-342VCT32 compliance profile.

Q: What is the viewing angle difference between SLR-342VCT32 and Lite-On alternatives?

A: SLR-342VCT32 has a 40° viewing angle. LTL-4222N and LTL1CHJETNN both have 45° viewing angles. The 5° difference expands the light emission cone and may affect application performance in directional indication circuits.

Q: Can I use LTL1CHJETNN in a circuit designed for 10mA operation?

A: No. LTL1CHJETNN requires 20mA test current, double the SLR-342VCT32 specification. Circuit current-limiting resistor values must be recalculated to accommodate the higher current draw and 2.05V forward voltage.