SLR-56DCT32 Equivalent & Substitute Parts

Part Overview

The SLR-56DCT32 is an orange LED indicator (605nm) manufactured by Rohm Semiconductor in T-1 3/4 through-hole radial package. This active product operates at 2V forward voltage with 25mcd brightness and 40° viewing angle, designed for discrete indication applications. Substitute parts are identified based on matching mechanical form factor, electrical operating parameters, and through-hole mounting compatibility to enable component sourcing flexibility while maintaining circuit functionality.

Substiute Parts

SLR-56DCT32

Rohm SemiconductorIn Stock: 834SLR-56DCT32 Datasheet

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HLMP-3451

Broadcom LimitedIn Stock: 20873HLMP-3451 Datasheet

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HLMP-3451-D0000

Broadcom LimitedIn Stock: 22968HLMP-3451-D0000 Datasheet

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LTL-307YE

Lite-On Inc.In Stock: 7691LTL-307YE Datasheet

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SSL-LX5093YT

Lumex Opto/Components Inc.In Stock: 12329SSL-LX5093YT Datasheet

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WP7113YT

KingbrightIn Stock: 15396WP7113YT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts are grouped based on the following allowable parameters:

• Mechanical Compatibility: T-1 3/4 package, 5mm lens diameter, through-hole radial mounting
• Electrical Compatibility: Forward voltage range 2V to 2.1V, test current 10mA to 20mA
• Regulatory Compliance: ROHS3 compliant, MSL 1 (Unlimited)
• Form Factor: Round domed lens, radial package configuration

Substitutes include parts with different colors (yellow wavelengths 583nm–590nm) and brightness levels (3.6mcd to 80mcd). These variations are acceptable within the substitute category as they maintain the same mechanical interface and electrical operating envelope while offering alternative optical characteristics for different application requirements.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active product status and ROHS3 compliance, ensuring regulatory continuity. Selection between substitutes depends on application-specific requirements:

HLMP-3451 and HLMP-3451-D0000 operate at 2V forward voltage matching the main part exactly, with 10mA test current. These are suitable for direct replacement in circuits designed for the SLR-56DCT32 electrical specifications. The 50° viewing angle provides wider light distribution compared to the 40° main part.

LTL-307YE, SSL-LX5093YT, and WP7113YT operate at 2.1V forward voltage with 20mA test current. These parts require circuit verification to confirm the additional 0.1V forward voltage drop and doubled test current are accommodated by the application design. Brightness levels range from 40mcd to 80mcd, offering higher luminous intensity than the 25mcd main part.

All substitutes share T-1 3/4 through-hole radial package configuration, 5mm lens diameter, and unlimited moisture sensitivity level (MSL 1), confirming mechanical and environmental compatibility.

Frequently Asked Questions (FAQ)

Q: Can HLMP-3451 directly replace SLR-56DCT32 in existing PCB designs? A: Yes. HLMP-3451 matches the 2V forward voltage and 10mA test current specifications. The T-1 3/4 radial package and 5mm lens diameter are identical. The 50° viewing angle is wider than the original 40°, which may affect optical performance in applications requiring specific light distribution patterns.

Q: What is the difference between HLMP-3451 and HLMP-3451-D0000? A: Both parts are identical in electrical and mechanical specifications. HLMP-3451-D0000 includes a device code suffix in the part number. Electrical parameters, package type, and performance characteristics are equivalent.

Q: Are the yellow LED substitutes (LTL-307YE, SSL-LX5093YT, WP7113YT) electrically compatible with the orange SLR-56DCT32? A: These parts operate at 2.1V forward voltage and 20mA test current, compared to the SLR-56DCT32 at 2V and 10mA. Circuit design must accommodate the higher voltage drop and increased current draw. The T-1 3/4 through-hole package is mechanically compatible. Color change from orange (605nm) to yellow (583nm–590nm) alters the optical indication function.

Q: Which substitute offers the brightest output? A: WP7113YT provides 80mcd brightness, the highest among all listed substitutes. This part operates at 2.1V forward voltage with 20mA test current and features a narrower 20° viewing angle compared to the SLR-56DCT32.

Q: Are all substitutes RoHS compliant? A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the regulatory status of the SLR-56DCT32.

Q: What is the height difference between the main part and substitutes? A: SLR-56DCT32 maximum height is 8.90mm. HLMP-3451 and HLMP-3451-D0000 are 6.35mm. LTL-307YE, SSL-LX5093YT, and WP7113YT are 8.60mm. Height variations may affect PCB layout and mechanical clearance in confined spaces.