TLMH3101-GS08 Equivalent & Substitute Parts

Part Overview

The TLMH3101-GS08 is a red LED indication component manufactured by Vishay Semiconductor Opto Division, configured as a 2-SMD, J-Lead surface mount device. This part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The component operates at 2V forward voltage with a 10mA test current and delivers 8.25mcd luminous intensity at a dominant wavelength of 619nm.

Substiute Parts

TLMH3101-GS08

Vishay Semiconductor Opto DivisionIn Stock: 1050TLMH3101-GS08 Datasheet

Current PartRFQ

HSMS-A100-J00J1

Broadcom LimitedIn Stock: 20198HSMS-A100-J00J1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLMH3101-GS08 is determined by the following critical parameters:

• Color and Wavelength: Red LED with dominant wavelength in the 619-626nm range and peak wavelength at 635nm
• Package Configuration: 2-PLCC surface mount package with J-Lead or equivalent termination
• Electrical Characteristics: Forward voltage between 2.0V and 2.2V; test current between 10mA and 20mA
• Optical Performance: Luminous intensity (8.25mcd minimum); viewing angle of 120°
• Lens Geometry: Round with flat top lens; diameter range 2.20mm to 2.40mm
• Compliance: ROHS3 compliant; MSL rating 2A or better
• Physical Dimensions: Maximum height 2.10mm; length and width compatible with 2-PLCC footprint

The HSMS-A100-J00J1 meets all substitution criteria within these allowed parameters.

Parameter Comparison

Engineering Selection Recommendations

The HSMS-A100-J00J1 is an active product from Broadcom Limited and serves as a direct functional substitute for the obsolete TLMH3101-GS08. Both components are ROHS3 compliant with identical MSL ratings, ensuring regulatory and environmental compatibility.

The substitute part exhibits higher luminous intensity (15mcd versus 8.25mcd), which is acceptable for indication applications and does not create functional incompatibility. The forward voltage differential of 0.2V (2.2V versus 2V) is within standard circuit design tolerances and requires verification only if the original design operates at the absolute minimum voltage threshold.

Physical dimensions show minor variations: the HSMS-A100-J00J1 is 0.35mm taller and 0.20mm longer. These differences are within standard PCB layout tolerances for 2-PLCC packages and do not preclude direct substitution. Verify mechanical clearance in the specific application before implementation.

The higher test current specification (20mA versus 10mA) reflects the substitute part's design characteristics and does not indicate incompatibility with circuits designed for the original 10mA specification.

Frequently Asked Questions (FAQ)

Q: Can the HSMS-A100-J00J1 be used as a direct replacement for the TLMH3101-GS08 on existing PCBs?

A: Yes. Both components use the 2-PLCC package footprint with compatible J-Lead termination. The 0.20mm length and 0.35mm height differences fall within standard PCB design tolerances for this package class. Verify mechanical clearance in confined spaces before implementation.

Q: What is the significance of the 0.2V forward voltage difference?

A: The HSMS-A100-J00J1 operates at 2.2V versus the original 2V. This difference is within standard LED tolerance ranges. Verify that the circuit's current-limiting resistor and power supply accommodate this voltage in the specific application. Most indication circuits designed for 2V LEDs operate successfully with 2.2V LEDs.

Q: Why is the substitute part brighter (15mcd versus 8.25mcd)?

A: Higher luminous intensity is a characteristic of the HSMS-A100-J00J1 design. For indication applications, increased brightness does not create functional incompatibility and often improves visibility. If the original design requires specific brightness levels, verify that the higher intensity does not exceed application requirements.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both components are ROHS3 compliant with identical MSL ratings (2A, 4 Weeks). Regulatory and environmental compliance requirements are equivalent.

Q: What should be verified before implementing the HSMS-A100-J00J1 substitute?

A: Verify three parameters in the specific application: (1) mechanical clearance for the 0.35mm height increase, (2) circuit tolerance for the 0.2V forward voltage increase, and (3) visual acceptability of the higher luminous intensity in the indication function.