SLI-343DC3F Equivalent & Substitute Parts

Part Overview

The SLI-343DC3F is an orange LED indicator from Rohm Semiconductor designed for through-hole applications. This component features a 605nm dominant wavelength with 500mcd brightness rating and 1.9V forward voltage. The product is classified as Not For New Designs, making identification of functionally equivalent alternatives essential for ongoing production support and design flexibility.

Substiute Parts

SLI-343DC3F

Rohm SemiconductorIn Stock: 2629SLI-343DC3F Datasheet

Current PartRFQ

WP710A10SET

KingbrightIn Stock: 1039WP710A10SET Datasheet

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WP710A10SYT

KingbrightIn Stock: 2039WP710A10SYT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SLI-343DC3F are identified based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

• Mounting Type: Through Hole (Radial configuration)
• Supplier Device Package: T-1
• Lens Transparency: Clear
• Lens Style: Round with Domed Top
• Configuration: Standard
• RoHS Status: ROHS3 Compliant

Secondary Compatibility Parameters:

• Voltage - Forward (Vf): 1.9V to 2.0V range acceptable
• Current - Test: 20mA standard
• Millicandela Rating: 500mcd minimum
• Viewing Angle: 34° to 40° range
• Height (Max): 5.60mm to 5.90mm range
• Lens Size: 3.0mm to 3.10mm diameter

The SLI-343DC3F lists WP710A10SYT as a substitute. However, WP710A10SYT is a yellow LED (590nm wavelength) and does not meet the orange color requirement. WP710A10SET from Kingbright qualifies as a functional substitute, meeting all primary criteria with compatible secondary parameters.

Parameter Comparison

Engineering Selection Recommendations

WP710A10SET (Kingbright) is the qualified substitute for SLI-343DC3F. This part maintains orange color specification (601nm dominant wavelength) with compatible electrical and mechanical parameters. Forward voltage increases from 1.9V to 2V, within acceptable tolerance for standard LED circuit designs. Brightness increases to 800mcd, providing enhanced visibility. Viewing angle reduces from 40° to 34°, a minor optical characteristic change. Physical dimensions remain compatible with T-1 through-hole applications. WP710A10SET holds Active product status with ROHS3 compliance, supporting long-term availability.

WP710A10SYT (Kingbright) is listed as a substitute but does not qualify for direct replacement due to yellow color specification (590nm wavelength). This part is suitable only for applications where yellow indication is functionally acceptable as an alternative to orange.

Both Kingbright alternatives maintain ROHS3 compliance and Unlimited moisture sensitivity rating, matching the original part's regulatory status.

Frequently Asked Questions (FAQ)

Q: Can WP710A10SET directly replace SLI-343DC3F in existing designs? A: Yes. WP710A10SET meets all primary substitution criteria: T-1 through-hole package, radial configuration, clear lens, and orange color specification. Forward voltage increases from 1.9V to 2V, which is compatible with standard LED circuit designs using current-limiting resistors. Brightness increases to 800mcd, providing improved visibility without circuit modification.

Q: What is the difference between WP710A10SET and WP710A10SYT? A: WP710A10SET is an orange LED (601nm) functionally equivalent to SLI-343DC3F. WP710A10SYT is a yellow LED (590nm) with higher brightness (1200mcd). These parts are not interchangeable for color-specific applications. WP710A10SYT is suitable only when yellow indication is functionally acceptable.

Q: Are there mechanical compatibility concerns with WP710A10SET? A: No. Both parts use T-1 through-hole radial packages with compatible dimensions. Lens size is 3mm (WP710A10SET) versus 3.10mm (SLI-343DC3F), a negligible difference. Maximum height increases from 5.60mm to 5.90mm, remaining within standard through-hole PCB clearances.

Q: Why is SLI-343DC3F marked as Not For New Designs? A: This designation indicates the part is in mature or end-of-life status. WP710A10SET from Kingbright is classified as Active, making it the recommended choice for new designs requiring orange LED indication in T-1 through-hole applications.

Q: Do the substitute parts maintain regulatory compliance? A: Yes. WP710A10SET maintains ROHS3 compliance, REACH Unaffected status, and Unlimited moisture sensitivity rating, matching SLI-343DC3F regulatory profile.