ASM3-SLD1-NST0H Equivalent & Substitute Parts

Part Overview

The ASM3-SLD1-NST0H is a surface-mount LED designed for horticulture applications, featuring royal blue wavelength output in a 1414 (3535 metric) package. This component is classified as obsolete, necessitating identification of active alternative parts to maintain design continuity and ensure ongoing component availability for new production runs and field replacements.

Substiute Parts

ASM3-SLD1-NST0H

Broadcom LimitedIn Stock: 868ASM3-SLD1-NST0H Datasheet

Current PartRFQ

ASM6-SLD1-NST0H

Broadcom LimitedIn Stock: 1208ASM6-SLD1-NST0H Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The ASM6-SLD1-NST0H qualifies as a direct substitute for the ASM3-SLD1-NST0H based on the following critical parameters:

• Color Match: Both parts emit royal blue wavelength output, meeting horticulture application requirements
• Test Current Compatibility: Identical test current rating of 350mA ensures equivalent performance under standard operating conditions
• Luminous Flux Equivalence: Both parts deliver 580mW (530mW ~ 705mW) at test conditions, maintaining optical output consistency
• Viewing Angle: Both parts feature 130° viewing angle, preserving beam distribution characteristics
• Mounting Configuration: Both are surface-mount components with identical footprint dimensions (3.45mm x 3.45mm)
• Compliance Alignment: Both parts maintain ROHS3 compliance and REACH unaffected status

The ASM6-SLD1-NST0H represents an active product with enhanced specifications, including lower forward voltage (2.9V vs 3V), higher maximum current rating (1A vs 700mA), improved thermal resistance (3°C/W vs 8°C/W), and superior moisture sensitivity classification (MSL 1 vs MSL 3).

Parameter Comparison

Engineering Selection Recommendations

The ASM6-SLD1-NST0H is the manufacturer-recommended substitute for the obsolete ASM3-SLD1-NST0H. Selection of the ASM6-SLD1-NST0H is supported by:

• Active Product Status: The substitute maintains current manufacturing and supply chain support, eliminating obsolescence risk
• Regulatory Compliance: Both ROHS3 and REACH compliance certifications are maintained, ensuring continued regulatory alignment
• Functional Equivalence: Matching test current, luminous flux output, and viewing angle parameters preserve circuit performance and optical characteristics
• Enhanced Reliability: The substitute offers improved thermal management (3°C/W vs 8°C/W) and superior moisture resistance (MSL 1 vs MSL 3), extending component longevity in field applications
• Packaging Compatibility: Identical footprint dimensions and surface-mount configuration enable direct PCB layout compatibility without redesign

Frequently Asked Questions (FAQ)

Q: Can the ASM6-SLD1-NST0H be used as a direct replacement in existing designs?

A: Yes. Both parts share identical test current (350mA), luminous flux output (580mW), viewing angle (130°), and physical footprint (3.45mm x 3.45mm). PCB layout and circuit traces require no modification.

Q: What are the key differences between these parts?

A: The ASM6-SLD1-NST0H features lower forward voltage (2.9V vs 3V), higher maximum current capability (1A vs 700mA), superior thermal resistance (3°C/W vs 8°C/W), and improved moisture sensitivity classification (MSL 1 vs MSL 3). These represent performance enhancements rather than functional changes.

Q: Does the lower forward voltage of the ASM6-SLD1-NST0H affect circuit design?

A: The 0.1V difference in typical forward voltage is within normal LED operating tolerances. Existing current-limiting resistor calculations remain valid. No circuit redesign is required.

Q: Are there packaging differences between these parts?

A: The ASM3-SLD1-NST0H uses standard surface-mount packaging, while the ASM6-SLD1-NST0H is supplied in Tape & Reel format. Both maintain identical component dimensions and mounting characteristics.

Q: What is the significance of the MSL rating difference?

A: The ASM6-SLD1-NST0H carries MSL 1 (unlimited moisture exposure tolerance) compared to MSL 3 (168-hour limit) for the ASM3-SLD1-NST0H. This indicates superior moisture resistance and reduced bake-out requirements during storage and assembly.

Q: Is the ASM6-SLD1-NST0H suitable for horticulture applications?

A: Yes. The ASM6-SLD1-NST0H maintains the royal blue wavelength specification and all optical characteristics required for horticulture LED lighting applications.