SLC-22VR3F Equivalent & Substitute Parts

Part Overview

The SLC-22VR3F is a red diffused through-hole LED manufactured by Rohm Semiconductor, designed for indication applications with a dominant wavelength of 630nm and forward voltage of 2V. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing production support and design continuity. Substitute parts must maintain compatibility across electrical characteristics, mechanical form factor, and mounting requirements to ensure direct replacement capability.

Substiute Parts

SLC-22VR3F

Rohm SemiconductorIn Stock: 983SLC-22VR3F Datasheet

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103SDRD/S530-A3

Everlight Electronics Co LtdIn Stock: 982103SDRD/S530-A3 Datasheet

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LTL-1224A

Lite-On Inc.In Stock: 967LTL-1224A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SLC-22VR3F are qualified based on the following criteria:

• Color: Red
• Lens Transparency: Diffused
• Lens Size: 2.00mm Dia (mechanical compatibility)
• Voltage - Forward (Vf): 2V (electrical compatibility)
• Mounting Type: Through Hole Radial (form factor compatibility)
• Wavelength - Dominant: Red spectrum (630nm–639nm range acceptable for indication applications)
• RoHS3 Compliance: Required for regulatory alignment

The identified substitutes maintain these core parameters while offering active product status and improved availability. Variations in millicandela rating and test current reflect design improvements in substitute offerings and do not preclude functional equivalence for indication-class applications.

Parameter Comparison

Engineering Selection Recommendations

Both 103SDRD/S530-A3 and LTL-1224A qualify as functional equivalents to the obsolete SLC-22VR3F based on shared electrical and mechanical parameters. Selection between substitutes should consider the following factors:

103SDRD/S530-A3 (Everlight Electronics): Active product status with ROHS3 compliance. Height of 8.30mm exceeds the original 5.70mm specification; verify PCB layout clearance before implementation. Test current of 20mA and millicandela rating of 25mcd represent increased brightness capability.

LTL-1224A (Lite-On Inc.): Active product status with ROHS3 compliance. Height of 6.00mm closely matches original specification at 5.70mm, minimizing mechanical redesign risk. Moisture Sensitivity Level (MSL) rated at 2A (4 Weeks) versus original MSL 1 (Unlimited); verify storage and handling procedures align with component requirements.

Both substitutes maintain 2V forward voltage, 2.00mm lens diameter, through-hole radial mounting, and red diffused lens characteristics required for direct replacement in indication circuits.

Frequently Asked Questions (FAQ)

Q: Can the 103SDRD/S530-A3 be used as a direct replacement for the SLC-22VR3F?

A: Yes, the 103SDRD/S530-A3 meets all core electrical and mechanical compatibility criteria. The increased height of 8.30mm versus 5.70mm requires verification of available PCB clearance. The higher test current (20mA) and brightness (25mcd) do not prevent substitution but may require circuit current-limiting adjustments if the original design operated at the 10mA test specification.

Q: What is the primary difference between the two substitute options?

A: The LTL-1224A offers a height of 6.00mm, closer to the original 5.70mm specification, reducing mechanical redesign requirements. The 103SDRD/S530-A3 provides higher brightness (25mcd) but requires greater PCB clearance due to 8.30mm height. Both maintain identical electrical parameters (2V forward voltage, 2.00mm lens size, through-hole mounting).

Q: Are wavelength differences between 623nm, 630nm, and 639nm significant for indication applications?

A: All three wavelengths fall within the red spectrum and are visually indistinguishable for indication-class applications. The wavelength variations reflect manufacturing tolerances across different suppliers and do not affect functional compatibility in standard LED indication circuits.

Q: Do the substitute parts require different circuit design considerations?

A: Both substitutes maintain 2V forward voltage, eliminating the need for circuit voltage adjustments. The increased test current (20mA) in substitutes versus 10mA in the original may require review of current-limiting resistor sizing if the original design was optimized for the lower specification. Verify that PCB layout accommodates the height differences, particularly for the 103SDRD/S530-A3 at 8.30mm.

Q: Are all parts RoHS3 compliant?

A: Yes, the SLC-22VR3F, 103SDRD/S530-A3, and LTL-1224A are all ROHS3 compliant, ensuring regulatory alignment for applications requiring RoHS certification.

Q: What is the significance of the MSL rating difference between LTL-1224A and the original part?

A: The LTL-1224A carries MSL 2A (4 Weeks), compared to the original MSL 1 (Unlimited). This indicates the substitute requires controlled storage conditions with a 4-week floor life after moisture exposure. Verify that component handling, storage, and assembly procedures accommodate this requirement.