TLMK3100-GS08 Equivalent & Substitute Parts

Part Overview

The TLMK3100-GS08 is a red 630nm LED indication component manufactured by Vishay Semiconductor Opto Division in a 2-SMD, J-Lead surface mount package. This part is classified as obsolete, making substitute components necessary for new designs and ongoing production requirements. The component delivers 18mcd brightness at 10mA forward current with a 1.9V typical forward voltage and 120° viewing angle. Equivalent and substitute parts maintain the same mechanical footprint, electrical performance envelope, and compliance certifications while offering improved availability or enhanced specifications.

Substiute Parts

TLMK3100-GS08

Vishay Semiconductor Opto DivisionIn Stock: 946TLMK3100-GS08 Datasheet

Current PartRFQ

VLMK3100-GS08

Vishay Semiconductor Opto DivisionIn Stock: 3389VLMK3100-GS08 Datasheet

MFR RecommendedRFQ

VLMD3105-GS08

Vishay Semiconductor Opto DivisionIn Stock: 17390VLMD3105-GS08 Datasheet

Parametric EquivalentRFQ

HSMC-A100-Q00J1

Broadcom LimitedIn Stock: 97937HSMC-A100-Q00J1 Datasheet

MFR RecommendedRFQ

QTLP670CRTR

onsemiIn Stock: 2771QTLP670CRTR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TLMK3100-GS08 are classified based on the following substitution criteria:

MFR Recommended Substitute (Direct Replacement): VLMK3100-GS08 maintains identical electrical and mechanical specifications with improved availability. This part is the primary recommended substitute, offering the same 1.9V forward voltage, 10mA test current, 630nm dominant wavelength, and 2-SMD J-Lead package configuration. The key difference is enhanced brightness (50mcd versus 18mcd) and active product status.

Parametric Equivalent: VLMD3105-GS08 provides functional equivalence with minor parameter variations. This part operates at 1.8V forward voltage (0.1V lower) with 20mcd brightness and 648nm dominant wavelength (18nm shift). The mechanical package, mounting type, and compliance certifications remain identical. This substitute is suitable for applications where the wavelength shift and brightness increase are acceptable.

Cross-Manufacturer Substitute (Broadcom): HSMC-A100-Q00J1 offers compatibility with notable parameter differences. This part features 1.9V forward voltage matching the original, but operates at 20mA test current (double the original), delivers 100mcd brightness, and uses a 2.20mm lens diameter (versus 2.40mm). The package remains 2-PLCC with identical mounting type and compliance status.

Cross-Manufacturer Substitute (onsemi): QTLP670CRTR is an obsolete alternative with parameter variations. This part operates at 2.0V forward voltage (0.1V higher), 20mA test current, 65mcd brightness, and 624nm dominant wavelength. The mechanical footprint is slightly larger (3.20mm L x 2.80mm W, 2.10mm height). This part is classified as obsolete and should be considered only when other substitutes are unavailable.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: VLMK3100-GS08 is the recommended substitute for new designs and production continuity. This part maintains identical electrical specifications (1.9V forward voltage, 10mA test current, 630nm wavelength) and mechanical footprint while offering active product status and improved brightness performance. All compliance certifications (ROHS3, REACH Unaffected, EAR99) are maintained.

Secondary Substitute: VLMD3105-GS08 is suitable when the primary substitute is unavailable. The 0.1V forward voltage reduction and 18nm wavelength shift require circuit validation but remain within typical LED indication application tolerances. Active product status and full compliance certification support long-term availability.

Cross-Manufacturer Substitute: HSMC-A100-Q00J1 provides an alternative from Broadcom with active product status and highest brightness (100mcd). The 20mA test current and 2.20mm lens diameter represent parameter deviations requiring design review. This part is suitable for applications where increased brightness is beneficial and mechanical constraints permit the slightly smaller lens diameter.

Obsolete Alternative: QTLP670CRTR should be avoided for new designs due to obsolete product status. The 2.0V forward voltage and 20mA test current create additional design constraints. This part is listed only for reference in legacy system maintenance scenarios where other substitutes are unavailable.

Frequently Asked Questions (FAQ)

Q: Can VLMK3100-GS08 be used as a direct replacement for TLMK3100-GS08?

A: Yes. VLMK3100-GS08 maintains identical forward voltage (1.9V), test current (10mA), wavelength (630nm dominant), and mechanical package (2-SMD, J-Lead, 3.00mm L x 2.80mm W, 1.85mm height). The increased brightness (50mcd versus 18mcd) is a performance enhancement suitable for indication applications. All compliance certifications are identical.

Q: What are the implications of using VLMD3105-GS08?

A: VLMD3105-GS08 operates at 1.8V forward voltage (0.1V lower) and 648nm dominant wavelength (18nm longer). The 20mcd brightness is slightly higher than the original 18mcd. These parameters remain within typical LED indication application ranges. Circuit validation is recommended to confirm the wavelength shift does not affect color perception in the target application.

Q: Why does HSMC-A100-Q00J1 have different test current specifications?

A: HSMC-A100-Q00J1 is specified at 20mA test current versus the original 10mA. This reflects the Broadcom component's design characteristics and higher brightness output (100mcd). Applications using this substitute must verify that the increased current does not exceed circuit current-limiting capabilities or thermal constraints.

Q: Are there mechanical compatibility concerns with cross-manufacturer substitutes?

A: HSMC-A100-Q00J1 and QTLP670CRTR feature slightly larger dimensions (3.20mm L x 2.80mm W, 2.10mm height) compared to the original (3.00mm L x 2.80mm W, 1.85mm height). PCB layout and clearance validation is required before substitution. The 2.20mm lens diameter on HSMC-A100-Q00J1 is also smaller than the original 2.40mm diameter.

Q: What is the moisture sensitivity impact of QTLP670CRTR?

A: QTLP670CRTR features MSL 1 (Unlimited) versus the original MSL 2A (4 Weeks). This represents improved moisture tolerance and eliminates bake-out requirements for extended storage. However, this part is obsolete and should not be selected for new designs.

Q: Which substitute offers the best long-term availability?

A: VLMK3100-GS08 and VLMD3105-GS08 are both active products from Vishay with substantial inventory levels (3300 and 17300 units respectively). HSMC-A100-Q00J1 from Broadcom also maintains active status with the highest inventory (97877 units). QTLP670CRTR is obsolete and should not be relied upon for production continuity.

Q: Are all substitutes RoHS3 compliant?

A: Yes. VLMK3100-GS08, VLMD3105-GS08, and HSMC-A100-Q00J1 are all ROHS3 Compliant. QTLP670CRTR compliance status is not specified in the provided data. All parts maintain REACH Unaffected and EAR99 ECCN classifications.