FKR3C64X-H LED Red Clear Round Through-Hole Equivalent & Substitute Parts

Part Overview

The FKR3C64X-H is a red LED indication component manufactured by Stanley Electric Co, designed for through-hole mounting applications. This discrete 2.2V radial LED features a 625nm dominant wavelength with 1000mcd brightness rating and a clear round domed lens. The component is classified as obsolete, making identification of compatible substitute parts essential for ongoing production support and design continuity.

Substiute Parts

FKR3C64X-H

Stanley Electric CoIn Stock: 1055FKR3C64X-H Datasheet

Current PartRFQ

SLI-343U8RC3F

Rohm SemiconductorIn Stock: 1585SLI-343U8RC3F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FKR3C64X-H is determined by the following critical parameters:

Primary Compatibility Criteria:

• Color: Red
• Lens Transparency: Clear
• Lens Style: Round with Domed Top
• Lens Size: 3.10mm Dia
• Voltage - Forward (Vf): 2.2V
• Current - Test: 20mA
• Mounting Type: Through Hole
• Package / Case: Radial
• Height (Max): 5.60mm

The substitute part SLI-343U8RC3F meets all primary compatibility criteria. Both components share identical forward voltage, test current, lens geometry, mounting configuration, and physical dimensions. The wavelength specifications (625nm dominant for FKR3C64X-H versus 620nm dominant for SLI-343U8RC3F) fall within the red spectrum range and are functionally equivalent for indication applications.

Parameter Comparison

Engineering Selection Recommendations

The SLI-343U8RC3F from Rohm Semiconductor is a valid substitute for the obsolete FKR3C64X-H. Selection should be based on the following factors:

Compliance & Availability: The SLI-343U8RC3F carries active product status with 1545 units in stock, compared to the FKR3C64X-H obsolete status with limited remaining inventory (981 units). Both components maintain RoHS compliance and REACH unaffected status, satisfying regulatory requirements.

Electrical & Mechanical Compatibility: Forward voltage (2.2V), test current (20mA), lens geometry (3.10mm clear round domed), and physical dimensions (5.60mm max height) are identical between both parts. Radial through-hole mounting configuration is preserved.

Brightness Consideration: The SLI-343U8RC3F provides 330mcd brightness versus the FKR3C64X-H 1000mcd rating. This represents a reduction in luminous intensity. Selection of this substitute is appropriate only when the application does not require the higher brightness specification of the original component.

Wavelength Specification: The 5nm difference in dominant wavelength (625nm to 620nm) remains within the red spectrum and does not affect functional performance for indication applications.

Frequently Asked Questions (FAQ)

Q: Can the SLI-343U8RC3F directly replace the FKR3C64X-H in existing designs?

A: Direct replacement is possible from a mechanical and electrical standpoint. All critical parameters including forward voltage, test current, lens size, mounting type, and physical dimensions are identical. However, the reduced brightness rating (330mcd versus 1000mcd) must be evaluated against application requirements.

Q: What is the significance of the millicandela rating difference?

A: Millicandela (mcd) measures luminous intensity. The FKR3C64X-H provides 1000mcd while the SLI-343U8RC3F provides 330mcd. In applications where visual indication brightness is critical or where viewing distance is significant, this difference may impact performance. Applications with less stringent brightness requirements will not be affected.

Q: Are both components RoHS compliant?

A: Yes. The FKR3C64X-H is RoHS Compliant, and the SLI-343U8RC3F is ROHS3 Compliant. Both satisfy RoHS requirements and are REACH unaffected.

Q: What is the wavelength difference between these components?

A: The FKR3C64X-H has a 625nm dominant wavelength, while the SLI-343U8RC3F has a 620nm dominant wavelength. This 5nm difference places both components in the red spectrum range and does not affect functional compatibility for indication applications.

Q: Why is the FKR3C64X-H classified as obsolete?

A: Obsolete status indicates the component is no longer in active production. The SLI-343U8RC3F maintains active product status, making it the recommended choice for new designs and ongoing production support.

Q: Are there any packaging differences between these components?

A: The FKR3C64X-H is supplied in standard packaging, while the SLI-343U8RC3F is supplied in bulk packaging. Both use radial through-hole package configuration. Bulk packaging may require adjustment to procurement and handling procedures.

Q: What viewing angle does the SLI-343U8RC3F provide?

A: The SLI-343U8RC3F specifies a 40° viewing angle. The FKR3C64X-H viewing angle specification was not provided in the available data. For applications with specific viewing angle requirements, this parameter should be evaluated against design constraints.