R4PGD LED Green Diffused Through-Hole Indicator

Part Overview

The R4PGD is a green diffused LED indicator manufactured by Bivar Inc., designed for discrete indication applications requiring a 2.2V forward voltage with radial through-hole mounting. This component is classified as Obsolete, necessitating identification of suitable alternatives for ongoing production and maintenance applications. The R4GD serves as a direct functional substitute while maintaining mechanical compatibility and similar electrical performance characteristics.

Substiute Parts

R4PGD

Bivar Inc.In Stock: 823R4PGD Datasheet

Current PartRFQ

R4GD

Bivar Inc.In Stock: 1043R4GD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The R4GD qualifies as a substitute for the R4PGD based on the following critical parameters that define functional and mechanical interchangeability:

Matching Parameters (Allow Substitution):

• Color: Green
• Lens Transparency: Diffused
• Lens Style: Rectangle with Flat Top
• Lens Size: 4.00mm x 2.00mm
• Height (Max): 7.00mm
• Viewing Angle: 120°
• Mounting Type: Through Hole
• Package / Case: Radial
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• Current - Test: 20mA

Variant Parameters (Within Operating Range):

• Voltage - Forward (Vf): 2.1V (R4GD) vs. 2.2V (R4PGD)
• Millicandela Rating: 8mcd (R4GD) vs. 2mcd (R4PGD)
• Wavelength - Peak: 568nm (R4GD) vs. 555nm (R4PGD)

The R4GD maintains physical and mechanical compatibility while providing improved luminous intensity and a minor forward voltage reduction, both favorable characteristics for indicator applications.

Parameter Comparison

Engineering Selection Recommendations

The R4GD is the suitable replacement for the R4PGD. The primary advantage of this substitution lies in the R4GD's Active product status, ensuring continued availability and manufacturer support. Both components carry identical compliance ratings (EAR99, HTSUS 8541.41.0000) and MSL Level 1 classification, confirming equivalent handling and storage requirements. The R4GD provides increased luminous intensity (8mcd versus 2mcd), which represents an operational improvement over the original design. The marginal difference in forward voltage (0.1V reduction) operates within acceptable design tolerances for standard indicator circuits. The R4GD is available in Bulk packaging with 971 pieces in current inventory, supporting both prototyping and production applications.

Frequently Asked Questions (FAQ)

Q: Can the R4GD directly replace the R4PGD in existing circuit designs? A: Yes. Both components share identical mechanical dimensions, mounting type, and electrical test current specifications. The R4GD operates at a marginally lower forward voltage (2.1V vs. 2.2V) and provides higher luminous intensity (8mcd vs. 2mcd), both favorable for standard indicator applications.

Q: How do the optical characteristics differ between these parts? A: Both parts feature green diffused lenses with 4.00mm x 2.00mm dimensions and 120° viewing angles. The peak wavelength differs slightly (568nm for R4GD versus 555nm for R4PGD), remaining within standard green LED spectral ranges. The R4GD provides four times the luminous intensity.

Q: Are there compliance or certification concerns with substitution? A: Both components carry identical ECCN (EAR99) and HTSUS classifications. Both are MSL Level 1, indicating unlimited shelf life and identical moisture sensitivity requirements. No compliance barriers exist to substitution.

Q: What packaging options are available? A: The R4PGD is listed as Obsolete with unspecified packaging. The R4GD is available in Bulk packaging with 971 pieces currently in stock, supporting production quantities.

Q: Why is the R4PGD classified as Obsolete? A: No specific reason is provided in the component data. Substitution with the R4GD eliminates obsolescence risk by utilizing an Active product with superior performance characteristics and current manufacturer support.