SMP4-BC-RB Equivalent & Substitute Parts

Part Overview

The SMP4-BC-RB is a dual-color surface mount LED indicator manufactured by Bivar Inc., featuring independent blue and red light-emitting elements in a 4-PLCC package. This component provides simultaneous blue (466nm) and red (640nm) indication capability with a clear, colorless lens and 120° viewing angle. The part is classified as obsolete, necessitating identification of active equivalent components for new designs and ongoing production requirements.

Substiute Parts

SMP4-BC-RB

Bivar Inc.In Stock: 1098SMP4-BC-RB Datasheet

Current PartRFQ

SMTL4-BC-RB

Bivar Inc.In Stock: 987SMTL4-BC-RB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMP4-BC-RB is determined by strict equivalence across the following critical parameters:

Electrical Compatibility:

• Identical forward voltage specifications for both blue (3.3V) and red (1.85V) elements
• Matching test current rating of 20mA for both colors
• Identical wavelength specifications (466nm blue, 640nm red)
• Equivalent millicandela ratings (50mcd blue, 36mcd red)

Mechanical & Optical Compatibility:

• Same 4-PLCC package configuration
• Identical lens style (round with flat top) and size (2.40mm diameter)
• Matching viewing angle (120°)
• Clear lens transparency
• Surface mount mounting type

Environmental & Regulatory Compliance:

• Moisture Sensitivity Level 4 (72 Hours)
• ECCN: EAR99
• HTSUS: 8541.41.0000

Parts meeting all these criteria are classified as direct substitutes. Packaging format differences (bulk versus tape & reel) do not affect electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The SMTL4-BC-RB is a direct electrical and mechanical substitute for the obsolete SMP4-BC-RB. All critical electrical parameters—forward voltages, test currents, wavelengths, and luminous intensity ratings—are identical. Optical and mechanical specifications, including lens configuration, size, and viewing angle, match exactly.

The SMTL4-BC-RB offers two advantages over the main part:

1. Product Status: The substitute is classified as active, ensuring continued availability and manufacturer support for new production and design cycles.

2. Regulatory Compliance: The SMTL4-BC-RB carries ROHS3 compliance certification, meeting current environmental and regulatory requirements for electronic components.

The maximum height specification differs by 0.20mm (1.85mm versus 2.05mm). This variance must be evaluated against specific PCB layout and enclosure clearance requirements in the application circuit.

Packaging format differs between the main part (bulk) and substitute (tape & reel). This distinction affects supply chain logistics and assembly processes but does not impact component functionality or compatibility.

Frequently Asked Questions (FAQ)

Q: Can SMTL4-BC-RB be used as a direct replacement for SMP4-BC-RB in existing designs?

A: Yes. All electrical parameters, optical specifications, and mechanical dimensions are identical. The 0.20mm height difference must be evaluated for PCB layout compatibility.

Q: What is the significance of the product status change from obsolete to active?

A: The SMP4-BC-RB is obsolete and no longer manufactured. The SMTL4-BC-RB is an active product with ongoing manufacturer support, ensuring component availability for production and design requirements.

Q: Does the ROHS3 compliance of SMTL4-BC-RB affect compatibility?

A: No. ROHS3 compliance is an environmental and regulatory attribute that does not alter electrical or mechanical performance. It indicates the component meets current regulatory standards.

Q: Are there packaging differences between these parts?

A: Yes. The SMP4-BC-RB is supplied in bulk packaging, while the SMTL4-BC-RB is supplied in tape & reel format. Both contain identical components; packaging format affects supply chain and assembly processes only.

Q: What is the impact of the 0.20mm height difference?

A: The SMTL4-BC-RB has a maximum height of 2.05mm compared to 1.85mm for the SMP4-BC-RB. This difference must be evaluated against PCB layout constraints, enclosure clearances, and mechanical assembly requirements in the specific application.

Q: Are the electrical characteristics identical between these parts?

A: Yes. Forward voltages (3.3V blue, 1.85V red), test currents (20mA), wavelengths (466nm blue, 640nm red), and millicandela ratings (50mcd blue, 36mcd red) are identical.

Q: Can these parts be used interchangeably in PCB assembly?

A: Electrical and optical performance are interchangeable. Physical placement must account for the 0.20mm height difference and packaging format (bulk versus tape & reel affects pick-and-place assembly procedures).