SMP4-SRYB Equivalent & Substitute Parts

Part Overview

The SMP4-SRYB is a multi-color surface mount LED indicator manufactured by Bivar Inc., featuring integrated Blue, Red, and Yellow light-emitting elements in a 4-PLCC package configuration. This component provides discrete LED indication with common anode architecture, operating at 3.2V for Blue and 1.9V for Red and Yellow channels at 20mA test current.

The SMP4-SRYB carries an Obsolete product status. Locating equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this multi-color LED indicator.

Substiute Parts

SMP4-SRYB

Bivar Inc.In Stock: 938SMP4-SRYB Datasheet

Current PartRFQ

SMTL4-SRYB

Bivar Inc.In Stock: 5361SMTL4-SRYB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMP4-SRYB is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Identical color configuration (Blue, Red, Yellow)
• Matching forward voltage specifications (3.2V Blue, 1.9V Red/Yellow)
• Identical test current rating (20mA across all channels)
• Matching wavelength specifications (470nm Blue, 631nm Red, 591nm Yellow)
• Equivalent millicandela ratings (285mcd Blue, 180mcd Red/Yellow)

Mechanical & Optical Equivalence Requirements:

• Common Anode configuration
• 4-PLCC package type
• Surface mount mounting type
• Round with Flat Top lens style
• 2.40mm diameter lens
• Colorless lens with clear transparency
• 120° viewing angle
• Identical physical dimensions (3.20mm L x 2.80mm W)
• MSL 4 moisture sensitivity classification

Regulatory & Compliance Equivalence:

• EAR99 ECCN classification
• 8541.41.0000 HTSUS code

The substitute part SMTL4-SRYB meets all electrical, mechanical, optical, and regulatory equivalence criteria established for the SMP4-SRYB.

Parameter Comparison

Engineering Selection Recommendations

The SMTL4-SRYB is a direct electrical and mechanical equivalent to the obsolete SMP4-SRYB. Selection of the SMTL4-SRYB is supported by the following engineering factors:

Product Status Consideration: The SMP4-SRYB carries Obsolete status, indicating discontinued manufacturing and limited availability. The SMTL4-SRYB maintains Active product status with confirmed inventory of 5258 pieces, ensuring supply chain continuity for new production and ongoing support.

Electrical Equivalence: All electrical parameters are identical across both parts: forward voltage specifications, test current ratings, wavelength characteristics, and luminous intensity ratings. Circuit designs utilizing the SMP4-SRYB require no modification for the SMTL4-SRYB.

Mechanical & Optical Compatibility: Physical dimensions, package configuration, lens specifications, and mounting characteristics are identical. PCB layouts and mechanical assemblies designed for the SMP4-SRYB accommodate the SMTL4-SRYB without modification.

Regulatory & Compliance Advantage: The SMTL4-SRYB provides explicit ROHS3 compliance and REACH Unaffected status, supporting modern regulatory requirements. Both parts share identical ECCN and HTSUS classifications.

Packaging Consideration: The SMTL4-SRYB is supplied in Tape & Reel (TR) format, standard for automated assembly operations, whereas the SMP4-SRYB was supplied in bulk packaging. This represents an operational improvement for high-volume manufacturing processes.

Height Variance: The SMTL4-SRYB maximum height is 2.05mm compared to 1.85mm for the SMP4-SRYB, representing a 0.20mm increase. This variance falls within standard PCB assembly tolerances and does not impact functional performance or mechanical clearance in typical applications.

Frequently Asked Questions (FAQ)

Q: Can the SMTL4-SRYB be used as a direct replacement for the SMP4-SRYB without circuit modification?

A: Yes. The SMTL4-SRYB is electrically equivalent across all parameters: forward voltage, test current, wavelength, and luminous intensity. No circuit design changes are required.

Q: Are the physical dimensions identical between these parts?

A: The lateral dimensions (3.20mm L x 2.80mm W) and lens specifications are identical. The maximum height differs by 0.20mm (1.85mm vs 2.05mm), which is within standard PCB assembly tolerances and does not affect mechanical fit or clearance in typical applications.

Q: What is the difference between the SMP4-SRYB and SMTL4-SRYB packaging?

A: The SMP4-SRYB was supplied in bulk packaging format. The SMTL4-SRYB is supplied in Tape & Reel (TR) format, which is standard for automated surface mount assembly operations and provides improved handling efficiency for high-volume production.

Q: Does the SMTL4-SRYB meet current regulatory requirements?

A: Yes. The SMTL4-SRYB is ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory standards. The SMP4-SRYB compliance status was not specified in available documentation.

Q: Are the optical characteristics identical?

A: Yes. Both parts feature identical lens style (Round with Flat Top), lens size (2.40mm diameter), lens color (Colorless), transparency (Clear), and viewing angle (120°). Color wavelengths and luminous intensity ratings are identical across all three color channels.

Q: What is the common anode configuration?

A: Common Anode configuration means the positive terminal is shared across all three LED elements (Blue, Red, Yellow). Individual cathode connections control each color independently. Both the SMP4-SRYB and SMTL4-SRYB use this identical configuration.

Q: Is the SMTL4-SRYB currently available?

A: Yes. The SMTL4-SRYB maintains Active product status with 5258 pieces in stock, providing reliable supply availability. The SMP4-SRYB is Obsolete with limited remaining inventory.

Q: Can existing PCB designs be updated to use the SMTL4-SRYB?

A: Yes. The identical package type (4-PLCC), mounting type (Surface Mount), and physical dimensions enable direct PCB layout compatibility. No design modifications are necessary.