SLR-332DCT32 Equivalent & Substitute Parts

Part Overview

The SLR-332DCT32 is an orange LED indication component manufactured by Rohm Semiconductor, designed for through-hole mounting applications. This radial LED features a 3.20mm domed lens with 16mcd brightness and operates at 2V forward voltage with a 10mA test current. The component is currently active in production and widely stocked, with 739 units available in tape and box packaging. Substitute parts may be required due to supply constraints, design revisions, or specific application requirements that demand alternative electrical or mechanical characteristics.

Substiute Parts

SLR-332DCT32

Rohm SemiconductorIn Stock: 843SLR-332DCT32 Datasheet

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HLMP-1420

Broadcom LimitedIn Stock: 25744HLMP-1420 Datasheet

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HLMP-1421

Broadcom LimitedIn Stock: 11697HLMP-1421 Datasheet

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HLMP-Y402-G0000

Broadcom LimitedIn Stock: 55788HLMP-Y402-G0000 Datasheet

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LTL-4252N

Lite-On Inc.In Stock: 6902LTL-4252N Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SLR-332DCT32 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Mounting Type: Through Hole (radial configuration required)
• Package / Case: Radial
• Voltage - Forward (Vf): 2V nominal operation
• Current - Test: 10mA standard test condition
• RoHS Status: ROHS3 Compliant

Secondary Compatibility Criteria:

• Color: Orange (primary requirement for indication function)
• Wavelength - Peak: 610nm (orange spectrum)
• Lens Transparency: Clear
• Lens Style: Round with Domed Top
• Viewing Angle: 75° (wide angle preferred)

The substitute parts listed below meet the primary criteria with variations in secondary parameters. HLMP-Y402-G0000 is the closest functional equivalent, matching color and wavelength specifications while maintaining radial through-hole mounting. HLMP-1420 and HLMP-1421 are yellow alternatives with identical electrical characteristics. LTL-4252N is a yellow alternative from Lite-On Inc. with comparable electrical performance.

Parameter Comparison

Engineering Selection Recommendations

HLMP-Y402-G0000 (Broadcom Limited) is the primary substitute for color-critical applications. This part maintains orange color specification and 610nm peak wavelength matching the SLR-332DCT32. Forward voltage increases to 2.1V and test current to 20mA; circuit design must accommodate these electrical differences. Brightness increases to 29mcd. Viewing angle reduces to 45°. Height increases to 5.20mm; verify PCB clearance. All compliance certifications (ROHS3, REACH Unaffected, EAR99) align with the main part. Stock availability is high at 55,742 units.

HLMP-1420 and HLMP-1421 (Broadcom Limited) are suitable for applications where yellow indication is acceptable. Both parts maintain 2V forward voltage and 10mA test current, matching the SLR-332DCT32 electrical profile exactly. Brightness is comparable at 15mcd. Viewing angle is 45°. Height increases to 6.35mm. Both are ROHS3 compliant and active in production with substantial inventory (25,715 and 11,600 units respectively).

LTL-4252N (Lite-On Inc.) is an alternative yellow LED with 2.1V forward voltage and 10mA test current. Brightness is 19mcd. Viewing angle is 45°. Height is 5.85mm. This part carries REACH Affected status, differing from the main part's REACH Unaffected classification. All other compliance parameters match. Stock availability is 6,849 units.

All substitute parts are active products with ROHS3 compliance and EAR99 ECCN classification, meeting regulatory requirements for direct substitution in compliant designs.

Frequently Asked Questions (FAQ)

Q: Can HLMP-Y402-G0000 replace SLR-332DCT32 in existing circuit designs?

A: HLMP-Y402-G0000 is electrically compatible with circuit modifications. Forward voltage increases from 2V to 2.1V and test current increases from 10mA to 20mA. Series resistor values must be recalculated to maintain proper LED current. PCB height clearance must accommodate the 5.20mm maximum height versus the original 4.60mm. Color and wavelength specifications match for orange indication applications.

Q: What is the difference between HLMP-1420 and HLMP-1421?

A: HLMP-1420 and HLMP-1421 are functionally identical yellow LEDs from Broadcom Limited. Both feature 2V forward voltage, 10mA test current, 15mcd brightness, 45° viewing angle, and 6.35mm maximum height. The primary difference is inventory availability: HLMP-1420 has 25,715 units in stock while HLMP-1421 has 11,600 units. Selection between these parts should be based on supply chain requirements and lead time considerations.

Q: Why does LTL-4252N show REACH Affected status while other substitutes show REACH Unaffected?

A: REACH Affected status indicates the component contains substances subject to REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) regulations. This is a regulatory classification difference specific to Lite-On Inc.'s manufacturing process and does not affect electrical performance or compatibility. Design teams must verify REACH compliance requirements for their specific application and end-use market before selecting this part.

Q: Can yellow LEDs (HLMP-1420, HLMP-1421, LTL-4252N) be used as direct replacements for the orange SLR-332DCT32?

A: Yellow LEDs are functionally compatible from an electrical and mechanical standpoint, as all parts share radial through-hole mounting, similar voltage and current characteristics, and comparable brightness levels. However, color substitution changes the visual indication from orange to yellow. This substitution is valid only if the application does not require specific orange color for functional or regulatory purposes. Verify color requirements in the system design specification before implementing yellow alternatives.

Q: What are the key mechanical differences between the main part and substitutes?

A: The SLR-332DCT32 has a 3.20mm lens diameter and 4.60mm maximum height. All substitute parts use 3mm T-1 lens size with varying heights: HLMP-Y402-G0000 (5.20mm), HLMP-1420 and HLMP-1421 (6.35mm), and LTL-4252N (5.85mm). These dimensional differences require PCB layout verification to ensure adequate clearance in confined spaces. Lens size reduction from 3.20mm to 3mm is minor and typically does not affect optical performance in standard indication applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all listed substitute parts (HLMP-Y402-G0000, HLMP-1420, HLMP-1421, and LTL-4252N) are ROHS3 compliant, matching the compliance status of the SLR-332DCT32. All parts carry EAR99 ECCN classification and HTSUS code 8541.41.0000. Moisture Sensitivity Level is 1 (Unlimited) for all parts, indicating no special moisture handling requirements during storage or assembly.