ASMT-JR10-ARS01 Equivalent & Substitute Parts

Part Overview

The ASMT-JR10-ARS01 is a red LED (628nm) surface mount lighting component manufactured by Broadcom Limited, rated for 1W operation. This part is classified as obsolete, making substitute components necessary for new designs and ongoing production requirements. The 6-SMD flat lead exposed pad package provides thermal management suitable for high-brightness applications requiring 70 lumens output at 350mA test current.

Substiute Parts

ASMT-JR10-ARS01

Broadcom LimitedIn Stock: 1032ASMT-JR10-ARS01 Datasheet

Current PartRFQ

ASMT-JR10-AST01

Broadcom LimitedIn Stock: 2901ASMT-JR10-AST01 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ASMT-JR10-ARS01 is determined by the following critical parameters:

Electrical Compatibility: Forward voltage (2.1V typical), test current (350mA), and maximum current (500mA) must remain consistent to ensure circuit compatibility without redesign.

Optical Specifications: Red color wavelength must fall within the 620nm to 635nm range. Luminous flux output (70lm nominal) and efficiency (95 lm/W) define the brightness performance class.

Mechanical & Thermal: Surface mount package type, 4.00mm x 4.00mm footprint, and 1.95mm maximum seated height ensure PCB compatibility. Thermal resistance (9°C/W) supports equivalent heat dissipation.

Regulatory Compliance: RoHS3 compliance, REACH unaffected status, and MSL 1 rating must be maintained for production and supply chain requirements.

The ASMT-JR10-AST01 qualifies as a direct substitute based on matching electrical parameters, red wavelength specification, identical package footprint, and equivalent thermal characteristics.

Parameter Comparison

Engineering Selection Recommendations

The ASMT-JR10-AST01 is the manufacturer-recommended substitute for the obsolete ASMT-JR10-ARS01. Both components are manufactured by Broadcom Limited and share identical electrical ratings (2.1V forward voltage, 350mA test current, 500mA maximum current), mechanical footprint (4.00mm x 4.00mm), and thermal characteristics.

The substitute maintains full regulatory compliance with RoHS3 and REACH requirements, and carries MSL 1 rating identical to the original part. Wavelength specification (625nm) remains within the red LED range and falls within the acceptable 620nm to 635nm window. The luminous flux output of 62lm at test current represents a 11% reduction compared to the original 70lm specification, with efficiency at 84 lm/W versus 95 lm/W.

For applications where the original brightness specification is critical, this efficiency difference must be evaluated against circuit design margins. The active product status of ASMT-JR10-AST01 ensures ongoing availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can ASMT-JR10-AST01 be used as a direct drop-in replacement for ASMT-JR10-ARS01?

A: Yes, for most applications. Both parts share identical forward voltage (2.1V), test current (350mA), maximum current (500mA), footprint (4.00mm x 4.00mm), and height (1.95mm). No circuit redesign is required. However, the substitute produces 62lm versus 70lm at test current, a difference that must be evaluated for brightness-critical applications.

Q: What is the wavelength difference between these parts?

A: The original ASMT-JR10-ARS01 operates at 628nm (620nm ~ 635nm range), while the substitute ASMT-JR10-AST01 operates at 625nm. Both fall within the standard red LED spectrum and are visually indistinguishable in most applications.

Q: Are there package differences between these parts?

A: Both parts use identical 4.00mm x 4.00mm surface mount packages with 1.95mm maximum seated height. The original is specified as 6-SMD with flat lead exposed pad, while the substitute is designated as 1616 (4040 Metric). These designations refer to the same physical package format and are PCB-compatible.

Q: Why is the original part obsolete?

A: The ASMT-JR10-ARS01 is classified as obsolete by Broadcom Limited. The ASMT-JR10-AST01 is the active product replacement and is recommended for all new designs and production orders.

Q: What are the compliance and regulatory differences?

A: Both parts carry identical regulatory status: RoHS3 compliant, REACH unaffected, MSL 1 (unlimited moisture sensitivity), ECCN EAR99, and HTSUS 8541.41.0000. No compliance differences exist between the two components.

Q: How does the efficiency difference affect circuit design?

A: The substitute operates at 84 lm/W compared to 95 lm/W for the original, representing an 11% efficiency reduction. For fixed-current applications, this results in proportionally lower light output. Circuit designs with brightness margin or automatic current adjustment may not require modification.