SMP4-RGY LED Indicator - Equivalent & Substitute Parts

Part Overview

The SMP4-RGY is a tri-color (green, red, yellow) 4-PLCC surface-mount LED indicator manufactured by Bivar Inc. This component features common anode configuration with individual wavelengths of 570nm (green), 640nm (red), and 585nm (yellow), designed for discrete LED indication applications. The SMP4-RGY has been classified as obsolete, making substitution necessary for ongoing procurement and new designs. The SMTL4-RGY represents the active equivalent from the same manufacturer, offering functional compatibility while maintaining current product lifecycle status.

Substiute Parts

SMP4-RGY

Bivar Inc.In Stock: 1229SMP4-RGY Datasheet

Current PartRFQ

SMTL4-RGY

Bivar Inc.In Stock: 12324SMTL4-RGY Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The SMTL4-RGY qualifies as a direct substitute for the SMP4-RGY based on the following critical parameters:

Electrical Equivalence:

• Identical voltage forward characteristics: 1.9V Green, 1.85V Red, 1.9V Yellow
• Identical test current specifications: 20mA for all three colors
• Identical dominant wavelengths: 570nm Green, 640nm Red, 585nm Yellow
• Identical millicandela ratings: 40mcd Green, 36mcd Red, 16mcd Yellow

Mechanical Compatibility:

• Identical package: 4-PLCC
• Identical mounting type: Surface Mount
• Identical configuration: Common Anode
• Identical lens specifications: Round with Flat Top, 2.40mm Dia, Colorless, Clear
• Identical physical dimensions: 3.20mm L x 2.80mm W
• Identical viewing angle: 120°
• Identical moisture sensitivity level: MSL 4

Key Differentiator: The SMTL4-RGY differs in packaging format (Tape & Reel vs. cut tape), height specification (2.05mm vs. 1.85mm), and product status (Active vs. Obsolete). The height variation of 0.20mm maximum falls within acceptable tolerance ranges for 4-PLCC applications and does not compromise functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

The SMTL4-RGY is the designated replacement for the obsolete SMP4-RGY. Both components are manufactured by Bivar Inc. and maintain identical electrical and mechanical specifications, including forward voltage, test current, wavelengths, brightness ratings, and physical dimensions.

The SMTL4-RGY offers additional advantages:

• Active product status ensures continued availability and manufacturing support
• ROHS3 compliance certifies environmental and safety standards compliance
• Tape & Reel packaging accommodates automated assembly processes

The minor height specification difference (2.05mm maximum for SMTL4-RGY versus 1.85mm for SMP4-RGY) represents a 0.20mm variance and does not introduce functional incompatibility in typical PCB layout applications. Both components share identical MSL ratings, requiring identical moisture control and handling procedures during assembly.

Frequently Asked Questions (FAQ)

Q: Can SMTL4-RGY directly replace SMP4-RGY in existing designs? A: Yes. The SMTL4-RGY is electrically and mechanically equivalent to the SMP4-RGY. Both components feature identical forward voltages, test currents, wavelengths, brightness ratings, and 4-PLCC package configuration. The components are pin-for-pin and functionally compatible.

Q: What is the significance of the height difference between the two parts? A: The SMP4-RGY maximum height is 1.85mm, while the SMTL4-RGY maximum height is 2.05mm. This 0.20mm difference falls within acceptable tolerances for 4-PLCC surface-mount LED applications and does not affect circuit performance or PCB assembly compatibility.

Q: How do packaging formats differ, and does this impact substitution? A: The SMP4-RGY comes in cut tape packaging, while the SMTL4-RGY is supplied in Tape & Reel format. This difference affects procurement, handling, and assembly automation but does not impact electrical or mechanical compatibility. Both formats deliver identical components.

Q: Are the optical and brightness specifications identical? A: Yes. Both parts feature 40mcd green, 36mcd red, and 16mcd yellow brightness ratings with identical dominant wavelengths (570nm, 640nm, and 585nm respectively). The lens specifications are also identical: 2.40mm diameter, round with flat top, colorless, and clear transparency with 120° viewing angle.

Q: What regulatory certifications apply to the SMTL4-RGY? A: The SMTL4-RGY is ROHS3 compliant and carries EAR99 export classification. Both parts are classified under HTSUS 8541.41.0000 and share identical moisture sensitivity levels (MSL 4).