PM3-KRD LED Panel Indicator - Equivalent & Substitute Parts

Part Overview

The PM3-KRD is a red diffused LED panel indicator manufactured by Bivar Inc., designed for applications requiring a red illumination status indicator with 120° viewing angle and 40mcd brightness output. The PM3-KRD operates at 1.7V with a 20mA maximum current rating and features a 4.83mm round panel cutout. This part is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for new designs and production restocking.

Substiute Parts

PM3-KRD

Bivar Inc.In Stock: 1188PM3-KRD Datasheet

Current PartRFQ

PM3-KNRD

Bivar Inc.In Stock: 1180PM3-KNRD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute relationships for the PM3-KRD are determined by the following critical electrical and mechanical parameters:

Electrical Parameters (Required for Compatibility):

• Forward voltage (Vf): 1.7V (Typ)
• Maximum current (If): 20mA
• Peak wavelength: 645nm (red spectrum)
• Viewing angle: 120°

Mechanical Parameters (Required for Panel Integration):

• Panel cutout shape: Round
• Lens color: Compatible optical output
• Lens transparency: Diffused or clear (dependent on application requirement)

The PM3-KNRD is grouped as a substitute based on matching electrical ratings (1.7V, 20mA, 645nm, 120° viewing angle) and red lamp color. However, mechanical integration requires evaluation due to differences in panel cutout dimensions and lens specifications.

Parameter Comparison

Engineering Selection Recommendations

PM3-KNRD Suitability: The PM3-KNRD shares all critical electrical specifications with the PM3-KRD (1.7V, 20mA, 645nm wavelength, 120° viewing angle). The PM3-KNRD has an active product status from Bivar Inc., ensuring ongoing supply availability and compliance maintenance.

Integration Considerations: Panel mechanical compatibility differs between the two parts. The PM3-KRD requires a 0.19" (4.83mm) round cutout, while the PM3-KNRD requires a 0.25" (6.35mm) round cutout. This difference necessitates panel modification or alternative mechanical integration strategy. The PM3-KNRD exhibits lower brightness output (18mcd vs. 40mcd), which may affect visibility in high-ambient-light applications.

Both parts are classified as ECCN EAR99 and share the same HTSUS code 8541.41.0000, indicating equivalent export compliance and tariff classification status.

Frequently Asked Questions (FAQ)

Q: Can the PM3-KNRD be used in place of the PM3-KRD without any modifications? Electrical compatibility is confirmed across the 1.7V, 20mA, and wavelength specifications. Mechanical compatibility requires evaluation of the panel cutout diameter. The PM3-KRD requires 4.83mm diameter cutout; the PM3-KNRD requires 6.35mm diameter cutout. Panel modification is required if original mechanical specifications cannot accommodate the larger cutout.

Q: What is the brightness difference between these two parts? The PM3-KRD is rated at 40mcd, while the PM3-KNRD is rated at 18mcd. Both maintain the same 120° viewing angle. Application brightness requirements must be assessed to determine if the reduced output of the PM3-KNRD is acceptable.

Q: Are there any compliance or sourcing advantages to the PM3-KNRD? The PM3-KNRD maintains active product status from Bivar Inc., ensuring supply continuity and ongoing compliance management. The PM3-KRD is classified as obsolete, typically indicating discontinued production.

Q: Do lens style differences affect optical performance? The PM3-KRD features a round lens with flat top; the PM3-KNRD features a round lens with domed top. Both maintain 120° viewing angle specification. Lens style differences may affect light distribution pattern and aesthetic appearance in the panel application.

Q: Are export restrictions or tariff classifications different between these parts? Both parts are classified as ECCN EAR99 and share HTSUS code 8541.41.0000. Export compliance and tariff classification are equivalent.