PM3RT LED Panel Indicator Equivalent & Substitute Parts

Part Overview

The PM3RT is a red LED panel indicator manufactured by Bivar Inc., designed for panel-mount applications with wire termination. This component is classified as obsolete, indicating it is no longer in active production. The PM3RT features a 3mm T-1 lens with clear transparency, 2.5mcd brightness rating, and operates at 2.1V with a maximum current of 20mA. Due to its obsolete status, identifying equivalent substitute parts is necessary for ongoing design support, maintenance, and new production requirements where this component specification remains applicable.

Substiute Parts

PM3RT

Bivar Inc.In Stock: 982PM3RT Datasheet

Current PartRFQ

PM3RDW12.0

Bivar Inc.In Stock: 2033PM3RDW12.0 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PM3RT is based on the following critical parameters that must remain consistent:

Core Compatibility Parameters:

• Manufacturer: Bivar Inc. (same product family)
• Series: PM3 (same mechanical and electrical platform)
• Lamp Color: Red
• Voltage: 2.1V
• Current: 20mA
• Lens Size: 3mm, T-1
• Panel Cutout Shape: Round
• Panel Cutout Dimensions: 0.16" (4.06mm)
• Wavelength - Peak: 700nm

Parameters Allowed to Vary:

• Lens Transparency (Clear vs. Diffused)
• Millicandela Rating (2.5mcd vs. 2mcd)
• Viewing Angle (30° vs. 40°)
• Termination Style (wire configuration and length)
• Product Status (Obsolete vs. Active)

The PM3RDW12.0 qualifies as a substitute because it maintains all core compatibility parameters while offering an active product status with enhanced availability.

Parameter Comparison

Engineering Selection Recommendations

PM3RDW12.0 as Primary Substitute:

The PM3RDW12.0 is the designated substitute for the obsolete PM3RT. This substitution is supported by:

1. Product Status: PM3RDW12.0 maintains Active status with confirmed inventory availability (2011 Pcs), ensuring long-term supply continuity compared to the obsolete PM3RT.

2. Electrical Compatibility: Both components operate at identical voltage (2.1V) and current (20mA) specifications, ensuring direct circuit compatibility without redesign.

3. Mechanical Compatibility: Both components share identical panel cutout dimensions (0.16" / 4.06mm), lens size (3mm T-1), and mounting interface, enabling direct mechanical substitution in existing panel designs.

4. Regulatory Compliance: Both components carry identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications, maintaining compliance status across supply chain and export requirements.

5. Reliability Rating: Both components feature MSL 1 (Unlimited) moisture sensitivity, indicating equivalent environmental performance.

Operational Differences to Consider:

The PM3RDW12.0 differs from PM3RT in three parameters:

• Lens Transparency: Diffused (vs. Clear) — affects light distribution pattern
• Brightness: 2mcd (vs. 2.5mcd) — represents 20% reduction in peak intensity
• Viewing Angle: 40° (vs. 30°) — provides wider light distribution
• Wire Length: 12" (304.80mm) — specified termination length

These differences remain within the PM3 series design envelope and do not affect electrical circuit operation or panel mounting compatibility.

Frequently Asked Questions (FAQ)

Q: Can PM3RDW12.0 be used as a direct replacement for PM3RT in existing designs?

A: Yes. Both components share identical electrical ratings (2.1V, 20mA), mechanical mounting interface (0.16" round cutout), and lens size (3mm T-1). The PM3RDW12.0 will function in any circuit designed for PM3RT without modification.

Q: What is the impact of the lens transparency difference (Clear vs. Diffused)?

A: Clear lenses concentrate light in a narrower beam pattern, while diffused lenses scatter light more broadly. The PM3RDW12.0 diffused lens produces a wider light distribution (40° vs. 30°), which may be advantageous in applications requiring broader visibility but will appear slightly less intense at the direct viewing angle.

Q: Does the 2mcd vs. 2.5mcd brightness difference affect circuit operation?

A: No. Both components operate at identical voltage and current specifications. The brightness difference is a luminous intensity characteristic that does not affect electrical circuit behavior. Circuit design remains unchanged.

Q: Why is PM3RDW12.0 specified with 12" wire leads?

A: The PM3RDW12.0 includes pre-terminated 12" (304.80mm) wire leads as standard. If different lead lengths are required, the wire leads can be trimmed or extended during assembly without affecting component performance.

Q: Are there compliance or regulatory differences between PM3RT and PM3RDW12.0?

A: No. Both components carry identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications. Both feature MSL 1 (Unlimited) moisture sensitivity. The PM3RDW12.0 additionally carries ROHS3 Compliant and REACH Unaffected certifications, providing enhanced regulatory documentation.

Q: What is the inventory status difference?

A: PM3RT is obsolete with 964 Pcs remaining in stock. PM3RDW12.0 is active production with 2011 Pcs in stock, ensuring reliable long-term availability for new orders and production requirements.

Q: Can PM3RDW12.0 be used in new designs where PM3RT was originally specified?

A: Yes. The PM3RDW12.0 is the designated substitute for PM3RT. All electrical, mechanical, and regulatory parameters support direct substitution in new designs. The active product status ensures supply continuity.