MV6351 LED Yellow Diffused T-1 3/4 Through Hole Equivalent & Substitute Parts

Part Overview

The MV6351 is an active-status yellow LED indicator manufactured by Everlight Electronics Co Ltd, designed for discrete indication applications in through-hole mounting configurations. This T-1 3/4 (5mm) diffused lens LED operates at 2.2V forward voltage with a 12mcd brightness rating and 70° viewing angle. The component is ROHS3 compliant and maintains unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified to address inventory availability, regional sourcing requirements, or specific application parameter needs while maintaining functional compatibility within yellow LED indication circuits.

Substiute Parts

MV6351

Everlight Electronics Co LtdIn Stock: 909MV6351 Datasheet

Current PartRFQ

4308H7

Visual Communications Company - VCCIn Stock: 49204308H7 Datasheet

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5219321F

DialightIn Stock: 18945219321F Datasheet

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5219322F

DialightIn Stock: 27435219322F Datasheet

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5219327F

DialightIn Stock: 43325219327F Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MV6351 are grouped based on the following substitution criteria:

Primary Compatibility Parameters:

• Color: Yellow (primary functional requirement)
• Mounting Type: Through Hole (assembly compatibility)
• Package / Case: Radial (lead configuration)
• RoHS Status: ROHS3 Compliant (regulatory requirement)

Secondary Compatibility Parameters:

• Lens Size: 5mm form factor preferred for direct mechanical replacement
• Voltage - Forward (Vf): Range 1.8V to 2.2V acceptable for most circuit designs
• Current - Test: 2mA to 20mA operational range

Substitutes Identified:

1. 4308H7 (VCC) - Yellow LED, clear lens, T-1 3/4, 2.2V, 20mA test current. Primary difference: clear lens (higher brightness 140mcd vs 12mcd diffused), narrower viewing angle (24° vs 70°).

2. 5219321F (Dialight) - Yellow LED, diffused lens, 5mm, 1.9V, 2mA test current. Lens transparency matches; lower brightness (1.8mcd) and current rating.

3. 5219322F (Dialight) - Yellow LED, diffused lens, 3mm size, 7.5V, 10mA test current. Lens transparency matches; different physical size and voltage requirement.

5219327F (Dialight) is a green LED and does not meet the yellow color requirement for direct substitution in yellow indication circuits.

Parameter Comparison

Engineering Selection Recommendations

4308H7 (VCC) - Closest Mechanical Match: Select when identical physical form factor (T-1 3/4, 5mm) and electrical parameters (2.2V, 20mA) are required. The clear lens produces significantly higher brightness (140mcd vs 12mcd), resulting in a narrower viewing angle (24° vs 70°). This substitute is suitable for applications where increased brightness and focused light distribution are acceptable or beneficial. All compliance certifications (ROHS3) are equivalent.

5219321F (Dialight) - Low-Current Alternative: Select when circuit design permits reduced operating current (2mA vs 20mA test current) and lower brightness (1.8mcd). Forward voltage (1.9V) is compatible with 2.2V-rated circuits. Diffused lens maintains the original light distribution characteristic. Mechanical form factor is similar (4.83mm vs 5mm). Suitable for low-power indication applications. All compliance certifications (ROHS3, REACH Unaffected) are equivalent.

5219322F (Dialight) - Different Size and Voltage: Select only when circuit design accommodates higher forward voltage (7.5V vs 2.2V) and smaller physical size (3mm vs 5mm). Diffused lens and brightness (12.6mcd) are comparable to the MV6351. This substitute requires circuit redesign and is not recommended for direct replacement in existing 2.2V designs. All compliance certifications (ROHS3, REACH Unaffected) are equivalent.

5219327F (Dialight) - Not Recommended: This part is a green LED (565nm peak wavelength) and does not meet the yellow color requirement. It is not a functional substitute for yellow indication circuits.

Frequently Asked Questions (FAQ)

Q: Can 4308H7 replace MV6351 in all applications?

A: 4308H7 shares identical voltage (2.2V) and current (20mA) specifications with equivalent physical dimensions (T-1 3/4, 5mm). However, the clear lens produces 140mcd brightness versus 12mcd diffused, resulting in a 24° viewing angle instead of 70°. Substitution is valid only when the application accepts higher brightness and narrower light distribution.

Q: What is the key difference between diffused and clear lens LEDs?

A: Diffused lens LEDs scatter light over a wider viewing angle (70° for MV6351) with lower peak brightness (12mcd). Clear lens LEDs concentrate light into a narrower viewing angle (24° for 4308H7) with higher peak brightness (140mcd). Selection depends on application visibility requirements and viewing geometry.

Q: Can 5219321F operate in a circuit designed for MV6351?

A: 5219321F operates at 1.9V forward voltage versus 2.2V, and test current is 2mA versus 20mA. The lower voltage is compatible with 2.2V-rated circuits. However, the significantly reduced current rating requires circuit analysis to confirm the design can function at 2mA. Brightness is substantially lower (1.8mcd vs 12mcd).

Q: Why is 5219322F not recommended as a direct replacement?

A: 5219322F requires 7.5V forward voltage compared to MV6351's 2.2V. This 3.4x voltage difference necessitates complete circuit redesign and cannot be accommodated by simple component substitution. Additionally, the 3mm lens size differs from the 5mm form factor.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. MV6351, 4308H7, 5219321F, and 5219322F are all ROHS3 compliant. 5219321F and 5219322F additionally carry REACH Unaffected status.

Q: What is the wavelength difference between MV6351 and substitute parts?

A: Peak wavelengths are 585nm (MV6351), 583nm (4308H7, 5219321F), and 585nm (5219322F). These differences are within the yellow LED spectrum and are not visually distinguishable in indication applications.

Q: Can viewing angle differences affect circuit performance?

A: Yes. MV6351 provides 70° viewing angle (diffused), while 4308H7 provides 24° (clear). Applications requiring wide-angle visibility must retain the diffused lens characteristic. Applications with restricted viewing geometry may benefit from the narrower 24° angle of 4308H7.

Q: What inventory considerations apply to these substitutes?

A: MV6351 has 834 units in stock. Substitute availability: 4308H7 (4869 units), 5219321F (1794 units), 5219322F (2646 units). Higher inventory levels for substitutes may support extended production schedules.