SLR-343MC3F Equivalent & Substitute Parts

Part Overview

The SLR-343MC3F is a green LED indicator from Rohm Semiconductor designed for through-hole applications. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. Finding equivalent or substitute parts is necessary for maintenance, repair, and legacy system support where this specific component is required or where inventory depletion necessitates alternative sourcing.

Substiute Parts

SLR-343MC3F

Rohm SemiconductorIn Stock: 747SLR-343MC3F Datasheet

Current PartRFQ

SLR-342MC3F

Rohm SemiconductorIn Stock: 2496SLR-342MC3F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SLR-343MC3F is determined by strict alignment of the following critical parameters:

• Color and Wavelength: Green at 572nm dominant wavelength
• Electrical Characteristics: Forward voltage of 2.1V at 10mA test current
• Optical Output: 25mcd millicandela rating
• Viewing Angle: 40° viewing angle
• Physical Form Factor: T-1 package, round domed lens, 3.10mm diameter
• Mounting Configuration: Through-hole radial mounting
• Compliance: ROHS3 compliant, REACH unaffected

The SLR-342MC3F from Rohm Semiconductor meets all these substitution criteria. Both parts share identical electrical, optical, and mechanical specifications with the exception of maximum height (5.40mm vs. 5.60mm), which remains within acceptable tolerance for through-hole applications.

Parameter Comparison

Engineering Selection Recommendations

The SLR-342MC3F is a direct parametric equivalent to the SLR-343MC3F. Both components are classified as "Not For New Designs" by Rohm Semiconductor, indicating mature product lines suitable for legacy system support and replacement applications.

Selection between these parts should be based on:

• Inventory Availability: SLR-342MC3F currently has 2,398 units in stock versus 658 units for SLR-343MC3F
• Compliance Requirements: Both parts maintain ROHS3 compliance and REACH unaffected status
• Physical Fit: The 0.20mm height difference (5.40mm vs. 5.60mm) is negligible for through-hole PCB applications and does not affect circuit board layout or mechanical clearance in standard designs
• Electrical Interchangeability: Identical forward voltage, test current, and optical characteristics ensure direct functional replacement

Frequently Asked Questions (FAQ)

Q: Can SLR-342MC3F be used as a direct replacement for SLR-343MC3F?

A: Yes. Both parts are parametrically equivalent with identical electrical, optical, and mechanical specifications. The only difference is maximum height (5.40mm vs. 5.60mm), which does not affect through-hole mounting compatibility.

Q: Are there any compliance differences between these parts?

A: No. Both parts maintain ROHS3 compliance and REACH unaffected status, making them suitable for equivalent regulatory applications.

Q: What is the significance of the height difference?

A: The 0.20mm height variance is within standard PCB design tolerances for through-hole components and does not impact circuit board layout, component clearance, or mechanical assembly.

Q: Why is the SLR-343MC3F marked "Not For New Designs"?

A: This designation indicates the product has reached maturity and is no longer recommended for new circuit designs. However, it remains available for legacy system support, maintenance, and repair applications.

Q: Are the optical characteristics identical?

A: Yes. Both parts deliver 25mcd at 572nm dominant wavelength with a 40° viewing angle, ensuring identical visual performance in indicator applications.