SLI-343Y8C3F Equivalent & Substitute Parts

Part Overview

The SLI-343Y8C3F is a yellow 590nm LED indicator manufactured by Rohm Semiconductor in the EXCELED™ series. This through-hole radial component operates at 2.2V forward voltage with a 680mcd brightness rating and 40° viewing angle. The part is Active status and ROHS3 compliant, making it suitable for standard indication applications requiring yellow wavelength output. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the T-1 through-hole package category.

Substiute Parts

SLI-343Y8C3F

Rohm SemiconductorIn Stock: 1452SLI-343Y8C3F Datasheet

Current PartRFQ

WP710A10SYT

KingbrightIn Stock: 2039WP710A10SYT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SLI-343Y8C3F is determined by the following critical parameters:

Mandatory Matching Criteria:

• Color: Yellow
• Wavelength - Dominant: 590nm
• Mounting Type: Through Hole
• Package / Case: Radial (T-1 device package)
• Lens Style: Round with Domed Top
• Lens Transparency: Clear
• Product Status: Active
• RoHS Compliance: ROHS3 Compliant

Allowable Variation Parameters:

• Voltage - Forward (Vf): ±0.2V tolerance acceptable for 20mA test current
• Millicandela Rating: Brightness variations permitted within standard LED tolerance ranges
• Viewing Angle: Variations acceptable based on lens design
• Height (Max): Minor dimensional variations within T-1 package specification
• Lens Size: Standard T-1 dimensional tolerance

The substitute part WP710A10SYT meets all mandatory matching criteria and operates within allowable electrical and mechanical tolerances for direct substitution in the SLI-343Y8C3F application.

Parameter Comparison

Engineering Selection Recommendations

Both the SLI-343Y8C3F and WP710A10SYT are Active status components with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component deployment.

The WP710A10SYT operates at 2.0V forward voltage compared to the 2.2V of the SLI-343Y8C3F, representing a 0.2V reduction within standard LED tolerance. The substitute part delivers 1200mcd brightness versus 680mcd in the main part, providing increased luminous intensity at equivalent 20mA test current. The viewing angle differs at 34° versus 40°, and maximum height increases from 5.60mm to 5.90mm, both variations remaining within T-1 package specifications.

Selection between these parts depends on circuit design requirements for forward voltage and brightness performance. Both components maintain identical wavelength, color, mounting type, package configuration, and regulatory compliance status.

Frequently Asked Questions (FAQ)

Q: Can WP710A10SYT directly replace SLI-343Y8C3F in existing designs?

A: Direct replacement is possible when circuit design accommodates the 0.2V lower forward voltage and higher brightness output. PCB footprints are identical for T-1 radial through-hole mounting. Verify that the application circuit can operate at 2.0V forward voltage and that increased brightness does not create optical interference.

Q: What are the key differences between these parts?

A: The primary differences are forward voltage (2.2V vs 2.0V), brightness rating (680mcd vs 1200mcd), viewing angle (40° vs 34°), and maximum height (5.60mm vs 5.90mm). All other parameters including wavelength, color, package type, and compliance certifications are identical.

Q: Are both parts suitable for the same applications?

A: Both parts are yellow 590nm LEDs in T-1 through-hole radial packages with identical lens style and transparency. They are suitable for the same application categories when electrical performance requirements align with their respective forward voltage and brightness specifications.

Q: What compliance certifications apply to both parts?

A: Both SLI-343Y8C3F and WP710A10SYT are ROHS3 compliant and REACH unaffected, meeting current regulatory standards for electronic component use in regulated markets.

Q: How do viewing angle differences affect application selection?

A: The SLI-343Y8C3F provides a 40° viewing angle while WP710A10SYT provides 34°. The wider viewing angle of the main part may be preferred for applications requiring broader light distribution, while the narrower angle of the substitute may be suitable for more focused indication requirements.