LED RED DIFFUSED T/H 4302T1-5VLC Equivalent & Substitute Parts

Part Overview

The 4302T1-5VLC is a red diffused through-hole LED manufactured by Visual Communications Company (VCC), designed for discrete 5V axial indication applications. This component is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity. The part operates at 5V forward voltage with a 2mcd brightness rating and features a 1.78mm diameter round domed lens with 90° viewing angle. Due to its obsolete status, alternative components meeting compatible electrical and mechanical specifications are necessary for system redesign or component replacement.

Substiute Parts

4302T1-5VLC

Visual Communications Company - VCCIn Stock: 8634302T1-5VLC Datasheet

Current PartRFQ

95-21USRD/S357/TR7

Everlight Electronics Co LtdIn Stock: 1231795-21USRD/S357/TR7 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 4302T1-5VLC requires evaluation against the following critical parameters:

Optical Compatibility: Red color and diffused lens transparency are mandatory. Peak wavelength must fall within the red spectrum range (620-650nm).

Electrical Compatibility: Forward voltage and test current determine circuit integration feasibility. The 4302T1-5VLC operates at 5V with 5mA test current. Substitute parts with significantly different voltage or current ratings require circuit redesign.

Brightness Compatibility: Millicandela rating affects visibility and application suitability. The 2mcd rating establishes the baseline brightness requirement.

Viewing Angle: The 90° viewing angle defines the light distribution pattern. Substitutes with narrower viewing angles may not provide equivalent coverage.

Mechanical Compatibility: Mounting type (through-hole vs. surface mount) and physical dimensions determine PCB integration feasibility. Lens size and style affect optical performance and mechanical fit.

Compliance Status: RoHS3 compliance and active product status ensure long-term availability and regulatory alignment.

The identified substitute part 95-21USRD/S357/TR7 differs significantly in mounting technology (surface mount vs. through-hole) and electrical characteristics (2V vs. 5V), requiring circuit-level redesign rather than direct pin-for-pin substitution.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution: The 95-21USRD/S357/TR7 is not suitable for direct pin-for-pin replacement of the 4302T1-5VLC due to fundamental differences in mounting technology, electrical characteristics, and optical performance.

Circuit-Level Redesign Required: Implementation of the 95-21USRD/S357/TR7 requires:

1. PCB layout modification to accommodate surface-mount gull-wing package instead of through-hole axial configuration
2. Power supply circuit redesign to accommodate 2V forward voltage instead of 5V
3. Current-limiting resistor recalculation for 20mA test current instead of 5mA
4. Optical design review due to 35° viewing angle versus 90° viewing angle and 100mcd versus 2mcd brightness differential

Compliance Alignment: Both components maintain ROHS3 compliance and EAR99 ECCN classification, ensuring regulatory continuity. The substitute part's active product status provides superior long-term availability compared to the obsolete main part.

Brightness Consideration: The substitute part delivers 50 times greater brightness (100mcd vs. 2mcd), which may require optical diffusion or intensity limiting in the application circuit to maintain intended visibility levels.

Frequently Asked Questions (FAQ)

Q: Can the 95-21USRD/S357/TR7 be used as a direct replacement for the 4302T1-5VLC?

A: No. The substitute part differs in mounting type (surface mount vs. through-hole), forward voltage (2V vs. 5V), test current (20mA vs. 5mA), viewing angle (35° vs. 90°), and brightness (100mcd vs. 2mcd). Direct substitution is not possible without circuit redesign.

Q: What are the primary compatibility barriers between these two parts?

A: The main barriers are: (1) mounting technology incompatibility requiring PCB redesign, (2) electrical parameter differences requiring power supply and current-limiting circuit modifications, and (3) optical performance differences requiring optical design review.

Q: Why is the substitute part significantly brighter than the main part?

A: The 95-21USRD/S357/TR7 is rated at 100mcd compared to the 4302T1-5VLC's 2mcd. This 50-fold brightness difference reflects different LED die technology and design intent. The substitute may require optical attenuation or intensity limiting in applications requiring lower brightness levels.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both the 4302T1-5VLC and 95-21USRD/S357/TR7 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the viewing angle difference, and why does it matter?

A: The main part provides 90° viewing angle (wide distribution), while the substitute provides 35° viewing angle (narrow distribution). This affects light distribution pattern and application suitability. Applications requiring wide-angle indication cannot use the substitute without optical modification.

Q: Is the substitute part's active status significant?

A: Yes. The 95-21USRD/S357/TR7 has active product status with 12,300 pieces in stock, ensuring long-term availability. The main part's obsolete status makes finding alternatives necessary for production continuity.

Q: What circuit modifications are required to use the substitute part?

A: Modifications include: PCB layout redesign for surface-mount placement, power supply adjustment from 5V to 2V operation, current-limiting resistor recalculation for 20mA instead of 5mA, and optical design review for brightness and viewing angle differences.