SLR-343DCT32 Equivalent & Substitute Parts

Part Overview

The SLR-343DCT32 is an orange LED indicator manufactured by Rohm Semiconductor, designed for through-hole mounting applications. This T-1 package LED operates at 2V forward voltage with a 25mcd brightness rating and 605nm dominant wavelength. The product is active and ROHS3 compliant. Substitute parts are identified when equivalent electrical characteristics and mechanical compatibility allow direct replacement in circuit designs.

Substiute Parts

SLR-343DCT32

Rohm SemiconductorIn Stock: 985SLR-343DCT32 Datasheet

Current PartRFQ

151031YS06000

Würth ElektronikIn Stock: 2948151031YS06000 Datasheet

SimilarRFQ

WP710A10NC

KingbrightIn Stock: 22224WP710A10NC Datasheet

SimilarRFQ

WP710A10YC

KingbrightIn Stock: 2999WP710A10YC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SLR-343DCT32 are grouped based on the following allowed electrical and mechanical parameters:

Primary Substitution Criteria:

• Mounting Type: Through Hole (radial configuration)
• Package / Case: T-1 or equivalent 3mm round form factor
• Voltage - Forward (Vf): 2V to 2.1V range
• Current - Test: 10mA to 20mA range
• Millicandela Rating: 25mcd or higher
• RoHS Status: ROHS3 Compliant
• Product Status: Active

Color and Wavelength Considerations: Substitutes are identified in both orange (605nm–607nm range) and yellow (588nm–592nm range) wavelengths. Color selection depends on circuit application requirements. Orange wavelength substitutes maintain closest spectral alignment with the primary part. Yellow wavelength substitutes are listed as available alternatives where application design permits color variation.

Parameter Comparison

Engineering Selection Recommendations

WP710A10NC (Kingbright Orange LED) is the closest electrical and optical substitute for the SLR-343DCT32. Both parts operate at approximately 2V forward voltage, feature orange wavelength output in the 602nm–605nm range, and maintain 25mcd brightness. The WP710A10NC is ROHS3 compliant and active. Height variation (5.90mm vs. 5.60mm) and viewing angle difference (34° vs. 40°) are within acceptable mechanical tolerances for standard through-hole PCB applications.

WP710A10YC (Kingbright Yellow LED) is suitable where yellow wavelength indication is acceptable in circuit design. Forward voltage (2.1V) and brightness (30mcd) remain within functional parameters. This part is ROHS3 compliant and active.

151031YS06000 (Würth Elektronik Yellow LED) provides higher brightness (110mcd) and wider viewing angle (60°) in yellow wavelength. Forward voltage matches at 2V. This part is ROHS3 compliant and active. Selection depends on whether increased brightness and viewing angle are beneficial or problematic for the application.

All substitute parts are active products with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Frequently Asked Questions (FAQ)

Q: Can WP710A10NC directly replace SLR-343DCT32 in my circuit?

A: Yes. Both parts operate at 2V forward voltage, feature orange wavelength output (602nm vs. 605nm), and maintain 25mcd brightness. Through-hole radial mounting is identical. Height difference (5.90mm vs. 5.60mm) and viewing angle variation (34° vs. 40°) are within standard PCB design tolerances.

Q: What is the difference between orange and yellow LED substitutes?

A: Orange substitutes (WP710A10NC at 602nm) maintain closest spectral alignment with the original SLR-343DCT32 (605nm). Yellow substitutes (WP710A10YC at 588nm, 151031YS06000 at 590nm) operate at longer wavelengths and produce different color indication. Selection depends on circuit application requirements for color-specific indication.

Q: Does the higher brightness of 151031YS06000 (110mcd) affect compatibility?

A: Higher brightness does not prevent electrical substitution. However, circuit design must account for increased light output. If the original design relied on 25mcd brightness for specific visual indication levels, the 110mcd output may require resistor adjustment to limit forward current and maintain intended brightness.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. WP710A10NC, WP710A10YC, and 151031YS06000 are all ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1), matching the compliance profile of SLR-343DCT32.

Q: What is the impact of viewing angle differences?

A: SLR-343DCT32 features 40° viewing angle. WP710A10NC and WP710A10YC feature 34° viewing angle (narrower). 151031YS06000 features 60° viewing angle (wider). Viewing angle affects the cone of light visibility. Narrower angles concentrate light intensity in a specific direction; wider angles distribute light across a broader area. Selection depends on PCB layout and intended viewing geometry.

Q: Can I use these substitutes interchangeably in production?

A: All substitute parts meet the electrical and mechanical parameters for through-hole radial LED applications. However, verify that forward voltage tolerance (2V to 2.1V range), brightness variation (25mcd to 110mcd), and viewing angle differences do not conflict with specific circuit design requirements or visual indication specifications.