SLR343WBD2PT21 Equivalent & Substitute Parts

Part Overview

The SLR343WBD2PT21 is a white LED indication component manufactured by Rohm Semiconductor, designed for through-hole mounting applications. This part is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing production and maintenance requirements. The component delivers 3300mcd brightness with a 3.2V forward voltage and 40° viewing angle, suitable for standard indicator applications requiring discrete white LED functionality.

Substiute Parts

SLR343WBD2PT21

Rohm SemiconductorIn Stock: 979SLR343WBD2PT21 Datasheet

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SLR343WBN2PT2

Rohm SemiconductorIn Stock: 658SLR343WBN2PT2 Datasheet

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EALP03RDCWA1

Everlight Electronics Co LtdIn Stock: 771EALP03RDCWA1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SLR343WBD2PT21 are identified based on the following critical parameters that determine functional and mechanical compatibility:

Primary Compatibility Criteria:

• Color: White
• Mounting Type: Through Hole
• Voltage - Forward (Vf) (Typ): 3.2V
• Current - Test: 20mA
• Viewing Angle: 40°
• Package / Case: Radial
• RoHS Status: ROHS3 Compliant

Secondary Compatibility Criteria:

• Lens Style: Round with Domed Top
• Configuration: Standard

Parts meeting all primary criteria are classified as direct substitutes. Variations in millicandela rating, lens size, and height within acceptable mechanical envelope tolerances do not preclude substitution for standard indication applications.

Parameter Comparison

Engineering Selection Recommendations

SLR343WBN2PT2 (Rohm Semiconductor): This part maintains identical electrical and mechanical specifications to the SLR343WBD2PT21 with the exception of lens color and transparency documentation. The SLR343WBN2PT2 carries active product status and ROHS3 compliance, making it the primary substitute for direct replacement in new production and maintenance applications. Moisture sensitivity level differs (2A vs. 1), requiring consideration in storage and handling protocols.

EALP03RDCWA1 (Everlight Electronics Co Ltd): This part meets all primary electrical compatibility criteria with identical forward voltage, test current, and viewing angle. The EALP03RDCWA1 provides higher brightness output (3950mcd vs. 3300mcd) and maintains ROHS3 compliance with unlimited moisture sensitivity. Mechanical differences include reduced lens diameter (2.90mm vs. 3.10mm) and increased height (6.20mm vs. 5.60mm). This part is suitable for applications where PCB layout accommodates the dimensional variation and increased brightness is acceptable or beneficial.

Frequently Asked Questions (FAQ)

Q: Can SLR343WBN2PT2 be used as a direct replacement for SLR343WBD2PT21?

A: Yes. Both parts share identical electrical specifications (3.2V forward voltage, 20mA test current, 3300mcd brightness, 40° viewing angle) and mechanical package (T-1 radial through-hole). The primary difference is product status (active vs. obsolete) and moisture sensitivity level classification. Both are ROHS3 compliant.

Q: What are the mechanical constraints when substituting EALP03RDCWA1?

A: The EALP03RDCWA1 has a smaller lens diameter (2.90mm vs. 3.10mm) and greater height (6.20mm vs. 5.60mm). PCB layout and mechanical clearance must accommodate these dimensions. The 3mm supplier package designation reflects this size difference compared to the T-1 package.

Q: Does the higher brightness of EALP03RDCWA1 affect circuit design?

A: No circuit redesign is required. The EALP03RDCWA1 operates at identical forward voltage (3.2V) and test current (20mA) as the original part. The increased millicandela rating (3950mcd vs. 3300mcd) represents enhanced light output at the same electrical operating point.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. Both SLR343WBN2PT2 and EALP03RDCWA1 carry ROHS3 compliance certification, matching the original SLR343WBD2PT21 specification.

Q: What is the difference in moisture sensitivity between substitute options?

A: SLR343WBD2PT21 and EALP03RDCWA1 both carry MSL 1 (unlimited moisture sensitivity), while SLR343WBN2PT2 carries MSL 2A (4 weeks). This affects storage and handling requirements but does not impact electrical performance after component installation.