SLH-56YY3F Equivalent & Substitute Parts

Part Overview

The SLH-56YY3F is a yellow diffused LED indicator manufactured by Rohm Semiconductor, designed for through-hole mounting applications. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance requirements. The part operates at a forward voltage of 2.2V with a test current of 20mA and delivers 100mcd brightness in a standard 5mm T-1 3/4 lens configuration.

Substiute Parts

SLH-56YY3F

Rohm SemiconductorIn Stock: 1140SLH-56YY3F Datasheet

Current PartRFQ

SLR-56YY3F

Rohm SemiconductorIn Stock: 31552SLR-56YY3F Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SLH-56YY3F is determined by the following critical parameters:

• Color and Wavelength: Yellow diffused lens with peak wavelength at 585nm
• Lens Configuration: 5mm T-1 3/4 form factor with diffused transparency
• Mounting Technology: Through-hole radial package
• Electrical Characteristics: Forward voltage range and test current compatibility
• Brightness Level: Millicandela rating suitable for indicator applications
• Compliance: ROHS3 compliance and REACH unaffected status

The SLR-56YY3F qualifies as a substitute based on matching color, lens size, mounting type, and package configuration. Electrical parameters show minor variations within acceptable tolerance for indicator applications.

Parameter Comparison

Engineering Selection Recommendations

The SLR-56YY3F serves as a functional substitute for the obsolete SLH-56YY3F in applications where the following conditions are met:

• Circuit design accommodates reduced brightness output (16mcd versus 100mcd)
• Forward voltage tolerance of ±0.1V is acceptable for the application
• Test current reduction from 20mA to 10mA aligns with power budget requirements
• Physical height difference of 0.80mm does not conflict with PCB layout constraints
• Both parts maintain ROHS3 compliance and REACH unaffected status

The SLR-56YY3F is classified as "Not For New Designs," indicating limited future availability. For new product development, consultation with the manufacturer for current-generation yellow diffused LED alternatives is recommended based on application requirements.

Frequently Asked Questions (FAQ)

Q: Can the SLR-56YY3F directly replace the SLH-56YY3F in existing designs?

A: Direct replacement is possible if the circuit tolerates the reduced brightness (16mcd versus 100mcd) and lower test current (10mA versus 20mA). Forward voltage difference of 0.1V is within typical indicator circuit tolerance.

Q: What is the primary difference between these two parts?

A: The main differences are brightness output and test current. The SLH-56YY3F operates at higher brightness and current, while the SLR-56YY3F is a lower-power variant. Both share identical lens configuration, color, and mounting technology.

Q: Are there mechanical compatibility concerns?

A: Both parts use identical 5mm T-1 3/4 through-hole radial packages. The height difference of 0.80mm (9.70mm versus 8.90mm) should be evaluated against specific PCB layout requirements.

Q: Do both parts meet current compliance standards?

A: Yes. Both the SLH-56YY3F and SLR-56YY3F are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

Q: Why is the SLR-56YY3F marked "Not For New Designs"?

A: This designation indicates the part is in end-of-life status with limited future availability. While suitable for legacy system maintenance, new product development should evaluate current-generation alternatives from the manufacturer.