PM3HDLW6 LED Panel Indicator - Equivalent & Substitute Parts

Part Overview

The PM3HDLW6 is a red LED panel indicator manufactured by Bivar Inc., designed for applications requiring a 3mm T-1 diffused lens with 6-inch wire leads. This component operates at 1.8V forward voltage with a maximum current rating of 5mA, delivering 6 millicandela brightness at a 45° viewing angle with a peak wavelength of 635nm.

The PM3HDLW6 is classified as obsolete. Locating equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for systems utilizing this component.

Substiute Parts

PM3HDLW6

Bivar Inc.In Stock: 1131PM3HDLW6 Datasheet

Current PartRFQ

PM3HDLW6.0

Bivar Inc.In Stock: 878PM3HDLW6.0 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PM3HDLW6 is determined by the following critical parameters:

Mechanical Compatibility:

• Panel cutout shape must be round
• Panel cutout dimensions must be 0.16" (4.06mm)
• Lens size must be 3mm, T-1
• Lens style must be round with domed top
• Termination style must be wire leads with 6" (152.40mm) length

Optical Compatibility:

• Lamp color must be red
• Lens transparency must be diffused

Electrical Operating Range:

• Forward voltage tolerance: substitute parts must operate within the system's power supply capability
• Maximum current rating must not exceed circuit design limits

Environmental & Regulatory:

• Moisture Sensitivity Level must be 1 (Unlimited) or equivalent
• ECCN and HTSUS classifications must align with regulatory requirements

Substitute parts meeting all mechanical, optical, and environmental criteria are classified as direct equivalents. Variations in electrical parameters (voltage, current, brightness) are permissible only when the substitute part operates within the design constraints of the original application circuit.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: PM3HDLW6.0

The PM3HDLW6.0 is the designated substitute for the obsolete PM3HDLW6. Both components are manufactured by Bivar Inc. and share identical mechanical and optical specifications, ensuring direct physical and functional compatibility in panel-mount applications.

Status Advantage: The PM3HDLW6.0 maintains active production status, providing reliable supply chain availability compared to the obsolete PM3HDLW6. This eliminates long-lead-time risks and supports ongoing procurement requirements.

Regulatory Compliance: The PM3HDLW6.0 carries ROHS3 Compliant certification, meeting current environmental and hazardous substance restrictions. Both parts share identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications, ensuring consistent regulatory treatment.

Electrical Parameter Differences: The PM3HDLW6.0 operates at 2V forward voltage (versus 1.8V) with a maximum current rating of 7mA (versus 5mA). These differences require circuit-level evaluation. If the original design operates the PM3HDLW6 at or near its 5mA maximum rating, the substitute's higher voltage and current ratings provide operational margin. Conversely, if the circuit is current-limited to 5mA or lower, the substitute will operate within safe limits.

Optical Parameter Differences: The PM3HDLW6.0 produces 2.5mcd brightness (versus 6mcd in the original), representing a 58% reduction in luminous intensity. The peak wavelength shifts from 635nm to 625nm (10nm shorter), and the viewing angle narrows from 45° to 40°. These optical changes may affect visibility in the end application and should be evaluated against specific brightness and viewing angle requirements.

Recommendation: Select PM3HDLW6.0 for new designs and production continuity when electrical and optical performance margins accommodate the specified parameter variations. Verify circuit compatibility with the 2V forward voltage and 7mA maximum current rating before implementation.

Frequently Asked Questions (FAQ)

Q: Why is the PM3HDLW6 no longer available?

A: The PM3HDLW6 is classified as obsolete, indicating that Bivar Inc. has discontinued production. The PM3HDLW6.0 is the active production equivalent and serves as the replacement for ongoing supply requirements.

Q: Can PM3HDLW6.0 be used as a direct replacement in existing designs?

A: PM3HDLW6.0 provides direct mechanical compatibility due to identical panel cutout dimensions (0.16" / 4.06mm), lens size (3mm T-1), lens style (round domed), and wire lead length (6"). However, electrical and optical parameters differ. Circuit validation is required to confirm that the 2V forward voltage and 7mA maximum current rating are compatible with the original design. Brightness reduction (2.5mcd versus 6mcd) and viewing angle narrowing (40° versus 45°) must be assessed against application requirements.

Q: What are the key mechanical compatibility criteria?

A: Mechanical compatibility requires: round panel cutout shape, 0.16" (4.06mm) cutout diameter, 3mm T-1 lens size, round domed lens style, and 6-inch wire lead termination. PM3HDLW6.0 meets all these criteria.

Q: How do the electrical parameters differ between PM3HDLW6 and PM3HDLW6.0?

A: PM3HDLW6 operates at 1.8V forward voltage with 5mA maximum current. PM3HDLW6.0 operates at 2V forward voltage with 7mA maximum current. The 0.2V voltage increase and 2mA current increase must be evaluated within the circuit's power supply and current-limiting design.

Q: What is the brightness difference between these parts?

A: PM3HDLW6 produces 6 millicandela (mcd), while PM3HDLW6.0 produces 2.5mcd. This represents a 58% reduction in luminous intensity. Applications requiring high brightness visibility may be affected by this reduction.

Q: Do both parts have the same wavelength?

A: No. PM3HDLW6 has a peak wavelength of 635nm (deep red), while PM3HDLW6.0 has a peak wavelength of 625nm (red). The 10nm difference may be perceptible in color-critical applications but both are classified as red LEDs.

Q: Is PM3HDLW6.0 RoHS compliant?

A: Yes, PM3HDLW6.0 is ROHS3 Compliant. The original PM3HDLW6 RoHS status is not specified in the available data.

Q: What is the viewing angle difference?

A: PM3HDLW6 has a 45° viewing angle, while PM3HDLW6.0 has a 40° viewing angle. The 5° narrower angle in the substitute may affect visibility from off-axis positions.

Q: Are both parts in the same regulatory classification?

A: Yes. Both PM3HDLW6 and PM3HDLW6.0 share identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications, ensuring consistent regulatory treatment for export and tariff purposes.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: Both PM3HDLW6 and PM3HDLW6.0 have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Can I use PM3HDLW6.0 in high-brightness applications?

A: PM3HDLW6.0 produces 2.5mcd compared to the original 6mcd. Applications requiring the original brightness level may not be suitable for this substitute. Evaluate specific brightness requirements before selection.