PM3YT LED Panel Indicator - Equivalent & Substitute Parts

Part Overview

The PM3YT is a yellow LED panel indicator from Bivar Inc., Series PM3, featuring a 3mm T-1 lens with clear transparency and 40 millicandela brightness. This component operates at 2V with a maximum current of 30mA and offers a 30° viewing angle. The part is currently classified as obsolete, making identification of suitable substitute components necessary for system redesign, maintenance, or inventory management purposes.

Substiute Parts

PM3YT

Bivar Inc.In Stock: 1087PM3YT Datasheet

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PM3YD

Bivar Inc.In Stock: 3112PM3YD Datasheet

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SSI-LXR1612YD-150B

Lumex Opto/Components Inc.In Stock: 875SSI-LXR1612YD-150B Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute components for the PM3YT must maintain compatibility across the following critical parameters: lamp color (yellow), lens color (yellow), lens size (3mm T-1), lens style (round with domed top), panel cutout shape (round), voltage rating (2V nominal), and maximum current rating (30mA). Substitutes must accommodate the fixed panel cutout dimension of 0.16" (4.06mm) and provide wavelength output in the yellow spectrum (585–590nm range).

The PM3YD serves as a primary substitute while maintaining identical core electrical and mechanical specifications. The Lumex Opto/Components Inc. SSI-LXR1612YD-150B represents an alternative substitute with compatible electrical characteristics and mechanical form factor, though with specification variations in brightness, viewing angle, and termination style.

Parameter Comparison

Engineering Selection Recommendations

The PM3YD is the recommended primary substitute for the obsolete PM3YT. Both components are manufactured by Bivar Inc. within the PM3 series, share identical mechanical mounting dimensions (0.16" panel cutout), and operate at the same electrical ratings (2V, 30mA). The PM3YD is actively manufactured and available in production quantities, eliminating the sourcing constraints associated with the obsolete PM3YT. The primary functional difference—diffused versus clear lens transparency and reduced brightness (20mcd versus 40mcd)—may require circuit redesign if light output intensity is critical to system operation.

The SSI-LXR1612YD-150B from Lumex Opto/Components Inc. serves as an alternative substitute when PM3YD availability is constrained. This component maintains compatibility with voltage and current ratings but presents mechanical constraints: the panel cutout dimension increases to 0.24" (6.20mm), requiring modification of panel mounting hardware. The higher viewing angle (60° versus 30°) and intermediate brightness level (30mcd) offer different optical characteristics. The SSI-LXR1612YD-150B includes wire lead termination (6.000" length) rather than PC pin connections, affecting circuit integration methodology.

Both substitute components are RoHS3 compliant and REACH unaffected, meeting contemporary regulatory requirements for electronic component manufacturing and use.

Frequently Asked Questions (FAQ)

Q: Can the PM3YD directly replace the PM3YT without circuit modification? A: Electrical substitution is direct for supply voltage and current ratings. However, the change from clear to diffused lens transparency results in reduced effective brightness perception. If the application relies on the 40mcd output specification or narrow 30° viewing angle of the original PM3YT, lens transparency and brightness differences must be evaluated against system requirements.

Q: What are the mechanical differences between PM3YD and SSI-LXR1612YD-150B? A: Panel cutout dimensions differ: PM3YD requires 0.16" (4.06mm) cutout, while SSI-LXR1612YD-150B requires 0.24" (6.20mm). The SSI-LXR1612YD-150B includes pre-attached wire leads (6.000" length), eliminating the need for separate PC pin termination hardware. Panel mounting fixtures must accommodate these dimensional variations.

Q: Are there compliance differences between the substitutes? A: Both PM3YD and SSI-LXR1612YD-150B are RoHS3 compliant and REACH unaffected. These certifications confirm conformance with current regulatory standards for restricted substance usage and chemical notification requirements.

Q: Why does the SSI-LXR1612YD-150B have a larger panel cutout dimension? A: The SSI-LXR1612YD-150B features a 3mm T-1 lens with integral 6-inch wire leads, requiring a larger panel aperture for accommodation. This design approach eliminates the need for separate PC pin headers and integrated connector hardware present in the Bivar design.

Q: What is the impact of viewing angle differences on system performance? A: The PM3YT offers a narrow 30° viewing angle, concentrating light output within a restricted directional range. The PM3YD increases this to 40°, and the SSI-LXR1612YD-150B to 60°. Applications requiring directional light output indication must account for these angular differences when evaluating optical suitability.