FHR3C64X-H LED Red Clear Round Through-Hole Equivalent & Substitute Parts

Part Overview

The FHR3C64X-H is a red LED indication component manufactured by Stanley Electric Co, designed for through-hole mounting applications. This part features a 3.10mm diameter round domed lens with clear transparency, emitting at 624nm dominant wavelength with 160mcd brightness at 10mA test current. The component operates at 1.9V forward voltage and is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing production and maintenance applications.

Substiute Parts

FHR3C64X-H

Stanley Electric CoIn Stock: 1223FHR3C64X-H Datasheet

Current PartRFQ

SLI-343URCT32

Rohm SemiconductorIn Stock: 968SLI-343URCT32 Datasheet

DirectRFQ

MT7403A-UR-A

Marktech OptoelectronicsIn Stock: 2757MT7403A-UR-A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FHR3C64X-H are identified based on strict alignment of the following critical parameters:

Primary Compatibility Criteria:

• Color: Red
• Lens Transparency: Clear
• Lens Style: Round with Domed Top
• Mounting Type: Through Hole
• Package / Case: Radial
• Voltage - Forward (Vf) Typical: 1.9V
• Configuration: Standard

Secondary Compatibility Parameters:

• Lens Size: 3.00mm to 3.10mm diameter range
• Height (Max): Within 5.60mm to 6.10mm range
• Wavelength - Dominant: Red spectrum (620nm to 643nm)
• RoHS Compliance: RoHS Compliant or ROHS3 Compliant

The two identified substitute parts meet these criteria and are classified as either direct equivalents or similar alternatives based on their electrical and mechanical alignment with the original FHR3C64X-H specification.

Parameter Comparison

Engineering Selection Recommendations

SLI-343URCT32 (Rohm Semiconductor) - Direct Substitute:

The SLI-343URCT32 is classified as a direct substitute for the FHR3C64X-H. Both components share identical lens size (3.10mm), forward voltage (1.9V), and mounting configuration. The SLI-343URCT32 maintains active product status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). The primary differences are increased brightness (450mcd versus 160mcd) and higher test current (20mA versus 10mA). The wavelength-dominant specification (620nm) remains within the red spectrum range. This part is suitable for direct replacement in applications where increased brightness is acceptable or beneficial.

MT7403A-UR-A (Marktech Optoelectronics) - Similar Substitute:

The MT7403A-UR-A is classified as a similar substitute with active product status and RoHS compliance. This component maintains the 1.9V forward voltage and through-hole radial mounting. The lens size is 3.00mm diameter (0.10mm smaller than the original), and height is 6.10mm (0.20mm taller). Brightness is 200mcd at 20mA test current. The wavelength-dominant specification is 643nm. This part is suitable for applications where minor dimensional variations and increased brightness are acceptable. Moisture sensitivity is rated MSL 2 (1 Year), which differs from the original MSL 1 rating.

Both substitute parts maintain electrical compatibility through identical forward voltage specification and are available in active production status, ensuring long-term supply continuity.

Frequently Asked Questions (FAQ)

Q1: Can SLI-343URCT32 be used as a direct replacement for FHR3C64X-H in all applications?

A: The SLI-343URCT32 shares identical electrical (1.9V forward voltage) and mechanical specifications (3.10mm lens diameter, round domed top, through-hole radial mounting). The primary difference is increased brightness (450mcd versus 160mcd at higher test current of 20mA). Direct replacement is possible in applications where increased brightness does not cause functional issues. Circuit design review is recommended if brightness-sensitive applications are involved.

Q2: What are the dimensional compatibility considerations for MT7403A-UR-A?

A: The MT7403A-UR-A has a 3.00mm lens diameter (0.10mm smaller than FHR3C64X-H) and maximum height of 6.10mm (0.20mm taller than FHR3C64X-H). These dimensional differences are within typical PCB layout tolerances for through-hole components. Verification of PCB hole spacing and component clearance is recommended before implementation.

Q3: How do wavelength specifications affect substitution?

A: The FHR3C64X-H operates at 624nm dominant wavelength (635nm peak). SLI-343URCT32 operates at 620nm, and MT7403A-UR-A operates at 643nm. All three wavelengths fall within the red spectrum range. Wavelength differences may be perceptible in color-critical applications but are functionally equivalent for standard red indication purposes.

Q4: What is the significance of the Moisture Sensitivity Level (MSL) difference?

A: The FHR3C64X-H and SLI-343URCT32 are both rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. The MT7403A-UR-A is rated MSL 2 (1 Year), requiring storage in controlled humidity conditions and limiting shelf life to one year after packaging. This affects supply chain management and storage protocols but does not impact functional performance after installation.

Q5: Are there packaging differences between the substitute parts?

A: Yes. The FHR3C64X-H packaging is listed as standard. SLI-343URCT32 is supplied in Tape & Box (TB) packaging, and MT7403A-UR-A is supplied in Bulk packaging. These packaging differences affect order quantities, handling procedures, and integration into automated assembly processes. Confirm packaging compatibility with procurement and assembly requirements.

Q6: What is the current test specification difference, and does it affect circuit design?

A: The FHR3C64X-H is specified at 10mA test current, while both SLI-343URCT32 and MT7403A-UR-A are specified at 20mA test current. The forward voltage remains 1.9V across all three parts. Circuit design must accommodate the higher current requirement for substitute parts. Verify that current-limiting resistor values and power supply capacity are adequate for 20mA operation.

Q7: Why is the FHR3C64X-H classified as obsolete?

A: The FHR3C64X-H is listed as obsolete by Stanley Electric Co, indicating discontinued production. The identified substitute parts (SLI-343URCT32 and MT7403A-UR-A) are both active products with confirmed inventory availability, ensuring supply continuity for new designs and maintenance applications.