SLI-580UT3F Equivalent & Substitute Parts

Part Overview

The SLI-580UT3F is a red LED indicator manufactured by Rohm Semiconductor, featuring a 5mm T-1 3/4 through-hole package with 620nm dominant wavelength and 5000mcd brightness rating. This component is classified as "Not For New Designs," making substitute parts necessary for ongoing production and maintenance applications. The part maintains ROHS3 compliance and unlimited moisture sensitivity rating, suitable for standard indication applications requiring radial mounting.

Substiute Parts

SLI-580UT3F

Rohm SemiconductorIn Stock: 742SLI-580UT3F Datasheet

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HLMP-3366

Broadcom LimitedIn Stock: 873HLMP-3366 Datasheet

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HLMP-D155

Broadcom LimitedIn Stock: 9365HLMP-D155 Datasheet

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LTL2H3EZ1K

LITEONIn Stock: 2245LTL2H3EZ1K Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SLI-580UT3F is determined by the following mandatory parameters:

• Physical Package: 5mm T-1 3/4 through-hole radial configuration
• Color: Red LED indication
• Forward Voltage (Vf): Range 1.7V to 2.0V
• Mounting Type: Through hole radial
• Lens Transparency: Clear
• Compliance: ROHS3 compliant

The three substitute parts listed (HLMP-3366, HLMP-D155, and LTL2H3EZ1K) meet these core substitution criteria. Variations in millicandela rating, viewing angle, wavelength, and test current are acceptable within the red LED spectrum (620nm–640nm) and do not prevent functional substitution in standard indication circuits.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts carry Active product status, providing long-term availability and supply chain stability compared to the SLI-580UT3F. Selection among substitutes depends on application-specific requirements:

HLMP-3366 (Broadcom Limited): Maintains identical forward voltage (1.9V) and supports the same 20mA test current as the original part. Offers wider viewing angle (50°) and lower height (6.35mm), suitable for applications requiring broader light distribution or space-constrained PCB layouts.

HLMP-D155 (Broadcom Limited): Features the lowest forward voltage (1.7V) and minimal test current (1mA), reducing power consumption in battery-powered or low-power indication circuits. Height reaches 12.44mm, requiring verification of mechanical clearance in existing designs.

LTL2H3EZ1K (LITEON): Delivers the highest brightness rating (12000mcd) with forward voltage of 2V and 20mA test current. Suitable for applications requiring maximum luminous intensity within the red spectrum. Height of 9.10mm remains within typical through-hole component tolerances.

All substitutes maintain ROHS3 compliance and unlimited moisture sensitivity rating, ensuring regulatory and environmental compatibility with the original specification.

Frequently Asked Questions (FAQ)

Q: Can I use HLMP-D155 as a direct replacement if my circuit is designed for 20mA operation?

A: HLMP-D155 is rated for 1mA test current, significantly lower than the SLI-580UT3F's 20mA specification. While the forward voltage (1.7V) remains compatible, operating at 20mA may exceed the component's design parameters. Circuit redesign or current-limiting adjustment is required for safe substitution.

Q: What is the impact of different millicandela ratings on circuit functionality?

A: Millicandela rating determines brightness output. LTL2H3EZ1K (12000mcd) is substantially brighter than the original (5000mcd), while HLMP-3366 and HLMP-D155 are dimmer. Brightness differences affect visual indication clarity but do not prevent electrical substitution. Application requirements determine acceptable brightness ranges.

Q: Are all substitutes mechanically compatible with existing PCB layouts?

A: All substitutes use identical 5mm T-1 3/4 through-hole radial packages. However, maximum heights vary: SLI-580UT3F (8.70mm), HLMP-3366 (6.35mm), HLMP-D155 (12.44mm), and LTL2H3EZ1K (9.10mm). Verify mechanical clearance, particularly for HLMP-D155, before substitution in space-constrained designs.

Q: Do forward voltage differences require circuit modifications?

A: Forward voltage ranges from 1.7V (HLMP-D155) to 2V (LTL2H3EZ1K), compared to 1.9V for the original. These variations fall within typical LED circuit tolerance margins. Most current-limiting resistor designs accommodate this range without modification. Verify specific circuit requirements if tight voltage regulation is critical.

Q: Which substitute offers the best long-term supply availability?

A: All three substitutes carry Active product status, indicating ongoing manufacturer support. Broadcom Limited (HLMP-3366 and HLMP-D155) and LITEON (LTL2H3EZ1K) are established LED manufacturers with established distribution networks. Current inventory levels are HLMP-D155 (9315 pcs), LTL2H3EZ1K (2200 pcs), and HLMP-3366 (813 pcs).