PM3PGD Equivalent & Substitute Parts Reference

Part Overview

The PM3PGD is a panel-mounted LED indicator manufactured by Bivar Inc., featuring a green diffused lens with 5mcd brightness output at 555nm wavelength. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and procurement needs. The part operates at 2.2V forward voltage with 30mA maximum current and is housed in a 3mm T-1 package with round domed lens geometry.

Substiute Parts

PM3PGD

Bivar Inc.In Stock: 1010PM3PGD Datasheet

Current PartRFQ

PM3GD

Bivar Inc.In Stock: 1306PM3GD Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PM3PGD is determined by the following critical parameters:

Mechanical Compatibility:

• Panel cutout shape and dimensions (Round, 0.16" / 4.06mm)
• Lens size classification (3mm, T-1)
• Lens style (Round with Domed Top)

Electrical Compatibility:

• Forward voltage range (2.1V to 2.2V acceptable for series operation)
• Maximum current rating (30mA)
• Color specification (Green lamp and lens)
• Lens transparency (Diffused)

Optical Compatibility:

• Viewing angle (40°)
• Wavelength range (555nm to 568nm acceptable for green spectrum)
• Brightness output (5mcd minimum for visual indication)

The PM3GD qualifies as a direct substitute based on matching mechanical form factor, electrical ratings, and optical characteristics within acceptable engineering tolerances.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: PM3GD

The PM3GD is the qualified substitute for the obsolete PM3PGD based on the following engineering criteria:

Mechanical Compatibility: Both parts share identical panel cutout dimensions (0.16" / 4.06mm), lens size (3mm T-1), and lens geometry (round domed top), ensuring direct mechanical interchangeability in panel-mount applications.

Electrical Compatibility: Forward voltage differential of 0.1V (2.1V vs. 2.2V) is within acceptable tolerance for series LED circuit operation. Maximum current rating of 30mA is identical, permitting use of existing current-limiting resistor calculations with negligible adjustment.

Optical Compatibility: Both parts operate in the green spectrum with 40° viewing angle. The PM3GD provides 25mcd output versus 5mcd for the PM3PGD, representing increased brightness suitable for applications requiring enhanced visibility.

Product Status Advantage: The PM3GD holds active product status with ROHS3 compliance certification, ensuring long-term availability and regulatory alignment for new designs and production continuity.

Termination Consideration: The PM3PGD features wire termination while the PM3GD uses PC pin termination. Assembly method selection depends on circuit board design and soldering process compatibility.

Frequently Asked Questions (FAQ)

Q: Can PM3GD directly replace PM3PGD in existing designs?

A: Mechanical and electrical compatibility is confirmed. Panel cutout dimensions, lens size, forward voltage, and current ratings are compatible. Termination style differs (wire vs. PC pin), requiring assembly process evaluation. Increased brightness (25mcd vs. 5mcd) may affect visual appearance in applications sensitive to indicator intensity.

Q: What is the voltage difference impact between 2.2V and 2.1V?

A: The 0.1V difference represents 4.5% variation in forward voltage. For series LED circuits with current-limiting resistors, this difference is absorbed within standard resistor tolerance ranges (±5%). Existing circuit designs require no modification.

Q: Are there wavelength differences between 555nm and 568nm?

A: Both wavelengths fall within the green spectrum. The 13nm difference is imperceptible to human vision and both parts appear identical in color. Optical filtering applications requiring specific wavelength precision should evaluate spectral data sheets.

Q: What does the termination style difference mean for assembly?

A: PM3PGD uses wire leads for through-hole or manual assembly. PM3GD uses PC pins for automated pick-and-place and wave soldering processes. Selection depends on manufacturing capability and circuit board design (through-hole vs. surface mount).

Q: Is the higher brightness of PM3GD (25mcd vs. 5mcd) a concern?

A: Increased brightness improves visibility in high-ambient-light environments. For applications where indicator intensity is critical to user interface design, brightness increase may require circuit adjustment or optical diffuser modification. Standard panel-mount applications typically benefit from higher brightness output.

Q: What compliance advantages does PM3GD provide?

A: PM3GD carries ROHS3 compliance certification, ensuring compliance with European Union Restriction of Hazardous Substances regulations. PM3PGD compliance status is not specified. For products requiring regulatory certification, PM3GD provides documented compliance advantage.

Q: Are inventory considerations relevant for substitution?

A: PM3GD inventory (1274 pcs) exceeds PM3PGD inventory (928 pcs), supporting long-term procurement reliability. Active product status for PM3GD ensures continued availability, whereas obsolete status for PM3PGD indicates limited future supply.