MPC3AT LED Panel Indicator

Part Overview

The MPC3AT is an amber LED panel indicator manufactured by Bivar Inc., featuring a 3mm T-1 lens with a 20° viewing angle and 40mcd brightness rating. The component operates at 2V with a 30mA maximum current rating and is designed for panel-mount applications with a 0.24" (6.10mm) round cutout. This part is currently listed as obsolete, necessitating identification of active substitute components that maintain functional compatibility for replacement in existing designs.

Substiute Parts

MPC3AT

Bivar Inc.In Stock: 783MPC3AT Datasheet

Current PartRFQ

MPC3ADW12.0

Bivar Inc.In Stock: 820MPC3ADW12.0 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MPC3AT is determined by the following critical parameters:

1. Physical Compatibility: Panel cutout shape (Round) and dimensions (0.24"/6.10mm) must match to ensure mechanical fit in existing panel assemblies.
2. Electrical Parameters: Forward voltage (2V) and maximum current (30mA) establish the operating point and circuit compatibility.
3. Optical Characteristics: Lamp color (Amber) and peak wavelength (605nm) maintain functional indication consistency. However, the substitute part may vary in lens transparency and viewing angle while retaining core functionality.
4. Form Factor: Lens size (3mm, T-1) and lens style (Round with Domed Top) ensure consistent visual presentation.
5. Environmental Compliance: Moisture Sensitivity Level (MSL 1) and product status (Active vs. Obsolete) indicate manufacturing availability and compliance posture.

The MPC3ADW12.0 qualifies as an equivalent substitute based on matching critical parameters: identical panel cutout dimensions, electrical ratings, lamp color, wavelength, lens form factor, and MSL rating. The primary difference is the cable termination style (12" wire leads) and a widened viewing angle (35° vs. 20°), with a slight reduction in brightness (25mcd vs. 40mcd).

Parameter Comparison

Engineering Selection Recommendations

The MPC3ADW12.0 is the designated substitute for the obsolete MPC3AT. Selection should be based on the following engineering criteria:

Product Status: The MPC3ADW12.0 maintains active manufacturing status, ensuring long-term availability and procurement reliability. The MPC3AT's obsolete status restricts sourcing to remaining inventory.

Compliance: The MPC3ADW12.0 is ROHS3 compliant, meeting current environmental and regulatory requirements for electronics manufacturing and distribution. Both parts maintain identical ECCN (EAR99) and HTSUS classifications for export and tariff purposes.

Electrical Compatibility: Identical forward voltage (2V) and maximum current (30mA) ratings ensure seamless integration into existing circuit designs without modification to current-limiting resistor values or power supply requirements.

Physical Fit: Matching panel cutout dimensions (0.24"/6.10mm round) and lens form factor (3mm T-1 round with domed top) provide direct mechanical compatibility with existing panel assemblies and mounting hardware.

Functional Considerations: The MPC3ADW12.0 features a diffused lens (versus clear) and expanded viewing angle (35° versus 20°), with a corresponding reduction in peak brightness (25mcd versus 40mcd). These optical differences result in broader light distribution and reduced intensity concentration, suitable for applications prioritizing uniform visibility across wider observation angles.

Frequently Asked Questions (FAQ)

Q: What are the primary differences between the MPC3AT and MPC3ADW12.0?

A: The key differences are lens transparency (Clear vs. Diffused), viewing angle (20° vs. 35°), millicandela rating (40mcd vs. 25mcd), and termination style (unspecified vs. 12" wire leads). Electrical ratings (2V, 30mA) and mechanical dimensions remain identical.

Q: Can the MPC3ADW12.0 be used in place of the MPC3AT in existing designs?

A: Yes. The substitute shares identical forward voltage, maximum current, panel cutout dimensions, lens size, and wavelength. The diffused lens and wider viewing angle provide more uniform light distribution at reduced peak intensity.

Q: How do the brightness ratings compare?

A: The MPC3AT provides 40mcd with a narrow 20° viewing angle, concentrating light output in a focused beam. The MPC3ADW12.0 provides 25mcd with a 35° viewing angle, distributing light across a wider field. Total luminous flux may be comparable despite the lower millicandela rating.

Q: What is the significance of the diffused lens on the MPC3ADW12.0?

A: A diffused lens scatters light over a wider area, reducing glare and peak intensity while increasing visibility across off-axis viewing angles. This is suitable for panels where observers approach from multiple angles or where reduced peak brightness is desirable.

Q: Does the 12" wire lead termination on the MPC3ADW12.0 affect compatibility?

A: The wire lead termination allows for off-panel mounting and connection flexibility. If the original MPC3AT design requires direct panel-mount termination, the wire leads must be integrated into the assembly design, or the leads may be trimmed to match original mounting requirements.

Q: Are both parts compliant with current environmental standards?

A: The MPC3ADW12.0 is ROHS3 compliant. The MPC3AT's compliance status is not specified in available documentation. Both maintain identical Moisture Sensitivity Level (MSL 1) and export classification (EAR99).

Q: What is the inventory status of each part?

A: The MPC3AT (obsolete) has 719 pieces in stock. The MPC3ADW12.0 (active product) has 794 pieces available. Long-term supply should prioritize the active product.