MV5B640 Equivalent & Substitute Parts

Part Overview

The MV5B640 is a blue diffused T-1 through-hole LED manufactured by onsemi, designed for discrete indication applications with a forward voltage of 3.8V and 100mcd brightness rating. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The part features a 3mm radial package with a domed lens design and 45° viewing angle, suitable for standard LED indication circuits.

Substiute Parts

MV5B640

onsemiIn Stock: 815MV5B640 Datasheet

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CMD264-UBD

Visual Communications Company - VCCIn Stock: 9415CMD264-UBD Datasheet

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SSL-LX3054USBD

Lumex Opto/Components Inc.In Stock: 5684SSL-LX3054USBD Datasheet

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SSL-LX30FT14USBD

Lumex Opto/Components Inc.In Stock: 1005SSL-LX30FT14USBD Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MV5B640 are evaluated based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Color: Blue
• Lens Transparency: Diffused (primary criterion for optical characteristics)
• Lens Size: 3mm, T-1 (physical form factor)
• Mounting Type: Through Hole (circuit board integration)
• Voltage - Forward (Vf): 4.6V to 3.8V range (circuit compatibility)
• Current - Test: 20mA (standard test condition)
• Package / Case: Radial (mechanical fit)

The substitute parts listed below meet these core electrical and mechanical parameters, enabling direct replacement in applications designed for the MV5B640. Variations in millicandela rating, viewing angle, and height represent acceptable performance differences within the diffused blue LED category.

Parameter Comparison

Engineering Selection Recommendations

CMD264-UBD (Visual Communications Company - VCC) is the primary substitute for direct replacement applications. This part maintains identical forward voltage (3.8V), test current (20mA), and diffused lens transparency as the MV5B640. The slightly higher millicandela rating (110mcd vs. 100mcd) and narrower viewing angle (32° vs. 45°) represent minor performance variations acceptable for standard indication circuits. The part is ROHS3 compliant and currently in active production status with substantial inventory availability (9319 pcs).

SSL-LX30FT14USBD (Lumex Opto/Components Inc.) serves as an alternative for applications requiring wider viewing angle (100°) and lower brightness (30mcd). The forward voltage of 4.6V is within acceptable tolerance for most circuits designed for the MV5B640. This part is ROHS3 compliant and active in production. The increased height (7.25mm) requires verification against mechanical constraints.

SSL-LX3054USBD (Lumex Opto/Components Inc.) is not recommended as a direct substitute due to clear lens transparency, which differs from the diffused specification of the MV5B640. While this part shares the T-1 form factor and through-hole mounting, the clear lens produces significantly different optical characteristics (1100mcd vs. 100mcd) unsuitable for applications requiring diffused indication.

Frequently Asked Questions (FAQ)

Q: Can CMD264-UBD replace MV5B640 in all applications? A: CMD264-UBD is compatible with applications designed for the MV5B640 when the narrower viewing angle (32° vs. 45°) and slightly higher brightness (110mcd vs. 100mcd) are acceptable. Verify circuit design parameters before substitution.

Q: What is the key difference between CMD264-UBD and SSL-LX30FT14USBD? A: CMD264-UBD maintains the original 3.8V forward voltage and 100mcd brightness class, while SSL-LX30FT14USBD operates at 4.6V with significantly lower brightness (30mcd) but offers a wider 100° viewing angle. Selection depends on circuit voltage tolerance and optical requirements.

Q: Why is SSL-LX3054USBD listed as a substitute if it has a clear lens? A: SSL-LX3054USBD is provided as a reference part with identical T-1 form factor and through-hole mounting. However, its clear lens transparency produces different optical performance and is not recommended for applications requiring diffused indication characteristics.

Q: Are all substitute parts ROHS3 compliant? A: CMD264-UBD, SSL-LX3054USBD, and SSL-LX30FT14USBD are all ROHS3 compliant. The original MV5B640 (obsolete) does not specify RoHS status.

Q: What are the mechanical constraints for substitution? A: All substitute parts use identical 3mm T-1 radial packages with through-hole mounting. Height variations range from 4.50mm to 7.25mm. Verify PCB layout and mechanical clearances, particularly for SSL-LX30FT14USBD (7.25mm height).

Q: Can forward voltage differences affect circuit operation? A: The substitute parts operate within a 3.3V to 3.8V range. Circuits designed for 3.8V (MV5B640) will function with 4.6V or 3.3V parts, though current limiting resistor values may require adjustment to maintain 20mA test current. Verify circuit design specifications.