TLHF4902 Equivalent & Substitute Parts

Part Overview

The TLHF4902 is an orange LED indicator manufactured by Vishay Semiconductor Opto Division, designed for through-hole applications. This T-1 package LED operates at 1.9V forward voltage with a 440mcd brightness rating and 606nm dominant wavelength. The component is actively produced and ROHS3 compliant, making it suitable for current industrial and consumer applications. Substitute parts are identified to address inventory availability, lead time requirements, or specific application constraints while maintaining electrical and mechanical compatibility.

Substiute Parts

TLHF4902

Vishay Semiconductor Opto DivisionIn Stock: 771TLHF4902 Datasheet

Current PartRFQ

TLHF4900

Vishay Semiconductor Opto DivisionIn Stock: 1761TLHF4900 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TLHF4902 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

• Color and Wavelength: Orange category with dominant wavelength in the 605–606nm range
• Lens Configuration: 3mm T-1 package with clear, round domed-top lens
• Electrical Characteristics: 1.9V forward voltage and 10mA test current
• Mechanical Compatibility: Through-hole radial mounting with 6.40mm maximum height
• Viewing Angle: 32° standard viewing angle
• Compliance: ROHS3 compliant, MSL 1 rating

The TLHF4900 qualifies as a substitute based on matching all critical parameters. The primary difference is the millicandela rating (300mcd versus 440mcd), which represents a reduction in brightness intensity while maintaining all other electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the TLHF4902 and TLHF4900 are active products manufactured by Vishay Semiconductor Opto Division and carry identical ROHS3 compliance and MSL 1 ratings. Selection between these parts should be based on brightness requirements for the specific application. The TLHF4902 provides 440mcd output, while the TLHF4900 provides 300mcd output. Both parts share identical electrical characteristics (1.9V forward voltage, 10mA test current), mechanical dimensions (T-1 3mm package, 6.40mm height), and optical properties (32° viewing angle, clear lens). Component selection should prioritize application brightness specifications and inventory availability.

Frequently Asked Questions (FAQ)

Q: Can TLHF4900 replace TLHF4902 in existing designs?

A: The TLHF4900 is mechanically and electrically compatible with the TLHF4902. The primary difference is brightness output (300mcd versus 440mcd). Substitution is valid only if the application brightness requirement does not exceed 300mcd.

Q: Are the package dimensions identical between TLHF4902 and TLHF4900?

A: Yes. Both parts use the T-1 3mm through-hole radial package with a maximum height of 6.40mm, ensuring identical PCB footprint and mounting compatibility.

Q: What is the wavelength difference between these parts?

A: The TLHF4902 has a dominant wavelength of 606nm, while the TLHF4900 has a dominant wavelength of 605nm. Both share an identical peak wavelength of 610nm. This 1nm difference falls within the orange LED spectrum and is not visually distinguishable.

Q: Do both parts meet the same compliance standards?

A: Yes. Both TLHF4902 and TLHF4900 are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, REACH unaffected status, and identical ECCN and HTSUS classifications.

Q: What is the forward voltage for both parts?

A: Both parts operate at 1.9V typical forward voltage with a 10mA test current, ensuring identical electrical behavior in circuit designs.