LED Circuit Board Indicator Bar CMS01Y Equivalent & Substitute Parts

Part Overview

The CMS01Y is a yellow LED circuit board indicator bar manufactured by Visual Communications Company (VCC). This component is classified as an obsolete product, featuring a single SIP configuration with a diffused, tinted rectangular lens and flat top design. The part operates at 2.1V with a 20mA current rating and delivers 8mcd of luminous intensity at a 590nm peak wavelength.

Due to the obsolete product status of the CMS01Y, identifying equivalent and substitute parts is necessary for ongoing design support, maintenance, and production continuity. Substitute parts must maintain electrical compatibility and mechanical interchangeability within the specified parameter tolerances.

Substiute Parts

CMS01Y

Visual Communications Company - VCCIn Stock: 1114CMS01Y Datasheet

Current PartRFQ

SSF-LXH25780YD

Lumex Opto/Components Inc.In Stock: 998SSF-LXH25780YD Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CMS01Y are identified based on strict electrical and mechanical parameter alignment. The following criteria determine substitution eligibility:

Electrical Parameters:

• Voltage Rating: 2.1V (exact match required)
• Current Rating: 20mA (exact match required)
• Color: Yellow (exact match required)
• Wavelength - Peak: 590nm nominal (tolerance range 585nm–595nm acceptable)
• Millicandela Rating: 8mcd minimum (equal or greater acceptable)
• Viewing Angle: 110° (exact match required)

Mechanical Parameters:

• Configuration: Bar - Single, SIP (exact match required)
• Lens Type: Diffused, Tinted (exact match required)
• Lens Style: Rectangle with Flat Top (exact match required)
• Mounting Type: Through Hole (exact match required for standard applications)

Compliance Parameters:

• RoHS Status: ROHS3 Compliant (required)
• MSL Rating: 1 (Unlimited) (required)
• REACH Status: REACH Unaffected (required)

The SSF-LXH25780YD from Lumex Opto/Components Inc. meets all substitution criteria and is classified as an active product, providing enhanced availability and ongoing manufacturer support.

Parameter Comparison

Engineering Selection Recommendations

The SSF-LXH25780YD from Lumex Opto/Components Inc. is the qualified substitute for the obsolete CMS01Y. Selection is based on the following engineering factors:

Compliance Alignment: Both parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 (Unlimited) rating, ensuring regulatory and environmental compatibility across applications.

Electrical Equivalence: The substitute part matches the CMS01Y in voltage rating (2.1V), current rating (20mA), and viewing angle (110°). The peak wavelength of 585nm falls within acceptable tolerance of the original 590nm specification. The millicandela rating of 9mcd exceeds the original 8mcd specification, providing equal or enhanced luminous intensity.

Mechanical Compatibility: The SSF-LXH25780YD maintains the same bar-single SIP configuration, diffused tinted lens type, and rectangular flat-top lens style. The part is available in a right-angle through-hole mounting variant, offering design flexibility for applications requiring angled PCB mounting.

Product Status Advantage: The SSF-LXH25780YD is classified as an active product with current manufacturer support and documented inventory availability (967 pcs in stock), ensuring long-term supply chain reliability compared to the obsolete CMS01Y.

Frequently Asked Questions (FAQ)

Q: Can the SSF-LXH25780YD directly replace the CMS01Y in existing designs?

A: The SSF-LXH25780YD is electrically and mechanically compatible with the CMS01Y. Both parts operate at 2.1V, 20mA, and feature identical lens configurations. The primary design consideration is the right-angle mounting option available on the Lumex part, which may require PCB layout verification for vertical mounting applications originally designed for the CMS01Y.

Q: What is the wavelength difference between 590nm and 585nm, and does it affect visual appearance?

A: The 5nm difference falls within standard manufacturing tolerances for yellow LEDs and is not perceptible to the human eye. Both wavelengths are classified as yellow in the visible spectrum and will produce visually equivalent indicator illumination.

Q: Why is the SSF-LXH25780YD rated at 9mcd instead of 8mcd?

A: The higher millicandela rating indicates greater luminous intensity. This represents an improvement over the original specification and does not create compatibility issues. The substitute part will produce a brighter indicator signal while maintaining all other electrical and mechanical parameters.

Q: Are there any MSL or moisture sensitivity concerns when substituting these parts?

A: Both the CMS01Y and SSF-LXH25780YD carry an MSL rating of 1 (Unlimited), indicating no moisture sensitivity limitations. Storage and handling requirements are identical between the two parts.

Q: What is the significance of the right-angle mounting option on the SSF-LXH25780YD?

A: The SSF-LXH25780YD is available in a right-angle through-hole configuration, allowing the LED lens to be mounted perpendicular to the PCB surface. The original CMS01Y uses standard through-hole mounting. Design verification is required to confirm whether the right-angle variant is compatible with existing PCB footprints and mechanical enclosure constraints.

Q: Are both parts RoHS3 compliant and REACH unaffected?

A: Yes. Both the CMS01Y and SSF-LXH25780YD are ROHS3 compliant and REACH unaffected, ensuring compatibility with current environmental and regulatory requirements across all markets.