SMP4-SRGY Equivalent & Substitute Parts

Part Overview

The SMP4-SRGY is a tri-color (Green, Red, Yellow) surface mount LED indicator in a 4-PLCC package manufactured by Bivar Inc. The device features common anode configuration with discrete forward voltages for each color and is designed for LED indication applications. This part is currently classified as Obsolete, making identification of suitable substitute components essential for ongoing design support and procurement continuity.

Substiute Parts

SMP4-SRGY

Bivar Inc.In Stock: 8152SMP4-SRGY Datasheet

Current PartRFQ

SMTL4-SRGY

Bivar Inc.In Stock: 52771SMTL4-SRGY Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The SMTL4-SRGY serves as a direct substitute for the SMP4-SRGY based on the following equivalent parameters:

Critical Matching Parameters:

• Package type: 4-PLCC (identical footprint and pinout compatibility)
• Mounting type: Surface Mount (same PCB assembly process)
• Configuration: Common Anode (identical electrical interface)
• Color output: Green, Red, Yellow (same functional indication capability)
• Lens size: 2.40mm Dia (identical optical form factor)
• Lens style: Round with Flat Top (visual consistency)
• Forward voltages: 3.3V Green, 1.9V Red, 1.9V Yellow (identical drive requirements)
• Test current: 20mA Green, 20mA Red, 20mA Yellow (identical operating conditions)
• Viewing angle: 120° (equivalent optical performance)
• Moisture sensitivity: MSL 4 (72 Hours) (equivalent handling requirements)
• Export classification: EAR99 (same regulatory category)
• HTSUS code: 8541.41.0000 (same tariff classification)

Parameter Comparison

Engineering Selection Recommendations

The SMTL4-SRGY is the direct functional replacement for the obsolete SMP4-SRGY. Both components are manufactured by Bivar Inc. and share identical electrical and mechanical interface specifications. The SMTL4-SRGY is currently in Active product status, ensuring availability for new procurement and design implementations.

Key differentiation factors include packaging format (Tape & Reel versus tube), increased green luminous intensity (1450mcd versus 1050mcd), a slight wavelength variation in the red LED (625nm versus 631nm dominant wavelength), and maximum height increase (2.05mm versus 1.85mm). These variations fall within normal component evolution and do not compromise electrical substitution compatibility.

The SMTL4-SRGY carries ROHS3 compliance and REACH Unaffected certification, reflecting current environmental and regulatory standards. For designs transitioning from the obsolete SMP4-SRGY, the SMTL4-SRGY provides immediate functional equivalence with enhanced product status and compliance documentation.

Frequently Asked Questions (FAQ)

Q: Can the SMTL4-SRGY replace the SMP4-SRGY in existing designs without circuit modification?

A: Yes. Both parts share identical package footprints (4-PLCC), common anode configuration, forward voltages, test currents, and viewing angles. No circuit modifications are required for electrical substitution.

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

A: The SMP4-SRGY has a maximum height of 1.85mm while the SMTL4-SRGY measures 2.05mm. This difference should be evaluated against PCB clearance requirements and mechanical assembly constraints specific to your application.

Q: How do the wavelength differences affect color appearance?

A: The red LED dominant wavelength differs by 6nm (631nm versus 625nm). Both wavelengths fall within the red spectrum and produce visually equivalent color output for standard LED indication applications.

Q: What is the significance of the increased green brightness in the SMTL4-SRGY?

A: The SMTL4-SRGY provides higher green luminous intensity (1450mcd versus 1050mcd). Designs using the SMP4-SRGY may require current limiting resistor adjustment if brightness compatibility is required.

Q: What are the packaging implications of switching from tube to Tape & Reel format?

A: The SMTL4-SRGY is supplied in Tape & Reel packaging, which is standard for high-volume surface mount assembly. The change from tube packaging affects procurement logistics and assembly line compatibility but does not affect component performance.

Q: Are there environmental and compliance considerations for this substitution?

A: The SMTL4-SRGY carries ROHS3 compliance and REACH Unaffected certification. The obsolete SMP4-SRGY does not reference these standards, making the SMTL4-SRGY the compliant choice for new designs and upgrades.