LED Circuit Board Indicator CMI01S Equivalent & Substitute Parts

Part Overview

The CMI01S is a red LED circuit board indicator manufactured by Visual Communications Company (VCC) in the T-1 3/4 StatusPak™ series. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The CMI01S features a 5mm diffused, tinted lens with right-angle through-hole mounting, designed for applications requiring a 1.7V red indicator with 3.2mcd brightness output and 120° viewing angle.

Substiute Parts

CMI01S

Visual Communications Company - VCCIn Stock: 1245CMI01S Datasheet

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SSF-LXH103SRD

Lumex Opto/Components Inc.In Stock: 3671SSF-LXH103SRD Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CMI01S are identified based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

• Color: Red (660nm wavelength peak)
• Configuration: Single LED
• Lens Type: Diffused, Tinted
• Lens Style: Round with Domed Top
• Mounting Type: Through Hole, Right Angle
• RoHS3 Compliance

Secondary Compatibility Factors:

• Voltage Rating: 1.7V to 1.8V range acceptable
• Millicandela Rating: Substitute may exceed original specification
• Viewing Angle: Substitute may differ from 120° original
• Lens Size: Physical form factor differences (5mm vs. 3mm) require PCB layout evaluation

The SSF-LXH103SRD from Lumex Opto/Components Inc. meets the primary substitution criteria with equivalent color, configuration, lens characteristics, and mounting orientation. The substitute maintains ROHS3 compliance and improves upon moisture sensitivity classification.

Parameter Comparison

Engineering Selection Recommendations

Compliance and Certification Basis:

The SSF-LXH103SRD qualifies as a functional substitute for the obsolete CMI01S based on equivalent ROHS3 compliance and matching electrical/optical characteristics in color, wavelength, and configuration. Both components meet the same regulatory classification (ECCN: EAR99, HTSUS: 8541.41.0000).

Product Status Advantage:

The SSF-LXH103SRD maintains active manufacturing status, ensuring long-term availability and supply chain stability compared to the obsolete CMI01S. The Lumex component also provides improved moisture sensitivity classification (MSL 1, Unlimited vs. MSL 2, 1 Year), reducing handling and storage constraints.

Physical Integration Considerations:

The 3mm lens size of the SSF-LXH103SRD differs from the 5mm form factor of the CMI01S. PCB layout modifications are required to accommodate the smaller T-1 package. The narrower 60° viewing angle of the substitute contrasts with the 120° angle of the original; application-specific visibility requirements must be evaluated.

Brightness Differential:

The SSF-LXH103SRD provides 80mcd output compared to the CMI01S 3.2mcd rating. This increased brightness may require circuit-level current limiting adjustments to maintain consistent indicator visibility without over-driving the substitute component.

Frequently Asked Questions (FAQ)

Q: Can the SSF-LXH103SRD directly replace the CMI01S without PCB modifications?

A: No. The SSF-LXH103SRD uses a 3mm T-1 lens package while the CMI01S uses a 5mm T-1 3/4 package. PCB footprint and mounting hole spacing differ, requiring layout redesign. The right-angle through-hole mounting orientation is equivalent, but physical dimensions necessitate board-level changes.

Q: What is the voltage compatibility between these two components?

A: The CMI01S operates at 1.7V while the SSF-LXH103SRD operates at 1.8V. This 0.1V difference falls within acceptable tolerance for most circuit designs. Existing current-limiting resistor values should be verified to ensure proper operation with the substitute's 20mA rated current.

Q: How does the viewing angle difference affect application suitability?

A: The CMI01S provides 120° viewing angle while the SSF-LXH103SRD provides 60° viewing angle. Applications requiring wide-angle visibility from multiple positions may experience reduced indicator visibility with the substitute. Applications with fixed viewing positions are unaffected by this parameter difference.

Q: Are there any supply chain advantages to using the SSF-LXH103SRD?

A: Yes. The SSF-LXH103SRD is actively manufactured by Lumex Opto/Components Inc., whereas the CMI01S is obsolete. Active production status ensures consistent availability, established lead times, and ongoing manufacturer support. The substitute also carries improved moisture sensitivity classification (MSL 1 vs. MSL 2), reducing storage and handling requirements.

Q: Does the increased brightness of the SSF-LXH103SRD require circuit modifications?

A: The SSF-LXH103SRD provides 80mcd compared to the CMI01S 3.2mcd. Existing current-limiting resistor values designed for the lower brightness original may result in over-driving the substitute. Circuit analysis is required to determine if resistor value adjustments are necessary to maintain safe operating current levels and consistent brightness perception.

Q: Are both components RoHS compliant?

A: Yes. Both the CMI01S and SSF-LXH103SRD are ROHS3 compliant, meeting equivalent environmental and regulatory standards for lead-free manufacturing and hazardous substance restrictions.