TLHB5400 Equivalent & Substitute Parts

Part Overview

The TLHB5400 is a blue diffused T-1 3/4 through-hole LED manufactured by Vishay Semiconductor Opto Division, designed for indication applications with a dominant wavelength of 466nm and typical forward voltage of 3.9V at 20mA test current. This part is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. The TLHB5400 delivers 15mcd luminous intensity with a 60° viewing angle in a standard radial package configuration.

Substiute Parts

TLHB5400

Vishay Semiconductor Opto DivisionIn Stock: 1084TLHB5400 Datasheet

Current PartRFQ

HLMP-DB25-B0000

Broadcom LimitedIn Stock: 5387HLMP-DB25-B0000 Datasheet

MFR RecommendedRFQ

WP7083QBD/G

KingbrightIn Stock: 17744WP7083QBD/G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLHB5400 is determined by the following mandatory parameters:

• Color: Blue
• Mounting Type: Through Hole
• Lens Size: 5mm, T-1 3/4
• Package Configuration: Radial
• Current - Test: 20mA
• RoHS3 Compliance
• REACH Unaffected Status

The two qualified substitute parts meet these core requirements. However, variations exist in forward voltage (3.2V to 3.3V versus 3.9V), millicandela rating (40mcd to 360mcd versus 15mcd), viewing angle (25° to 60°), lens transparency (clear or diffused), and wavelength specifications (465nm to 470nm versus 466nm). These parameter differences must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are classified as active products with full RoHS3 compliance and REACH unaffected status, providing regulatory continuity for the obsolete TLHB5400.

HLMP-DB25-B0000 (Broadcom Limited) operates at a lower forward voltage of 3.2V compared to the TLHB5400's 3.9V, reducing power dissipation in series resistor circuits. The clear lens transparency differs from the diffused original, affecting light diffusion characteristics. The 25° viewing angle is narrower than the TLHB5400's 60°, concentrating luminous intensity to 40mcd. Physical height is reduced to 9.19mm. This part is suitable for applications where reduced forward voltage and concentrated light output are acceptable.

WP7083QBD/G (Kingbright) maintains the diffused lens transparency and 60° viewing angle of the TLHB5400, providing optical behavior consistency. Forward voltage is 3.3V, intermediate between the original and the Broadcom alternative. Millicandela rating is significantly higher at 360mcd, delivering substantially greater luminous intensity. Physical height is 8.60mm. This part is suitable for applications requiring maintained optical characteristics with enhanced brightness and lower forward voltage.

Frequently Asked Questions (FAQ)

Q: Can HLMP-DB25-B0000 directly replace TLHB5400 in existing designs?

A: HLMP-DB25-B0000 meets core package and electrical requirements but introduces three significant differences: forward voltage reduction from 3.9V to 3.2V, lens transparency change from diffused to clear, and viewing angle narrowing from 60° to 25°. Circuit resistor values and optical design must be re-evaluated. Direct substitution without design review is not recommended.

Q: Can WP7083QBD/G directly replace TLHB5400 in existing designs?

A: WP7083QBD/G maintains diffused lens transparency and 60° viewing angle, preserving optical characteristics. Forward voltage decreases from 3.9V to 3.3V, requiring series resistor recalculation. Millicandela rating increases from 15mcd to 360mcd, substantially increasing brightness. This part is suitable for direct substitution with resistor adjustment if increased brightness is acceptable.

Q: What are the key electrical differences between these parts?

A: Forward voltage varies from 3.2V (HLMP-DB25-B0000) to 3.9V (TLHB5400) to 3.3V (WP7083QBD/G). All operate at 20mA test current. Series resistor calculations must account for these voltage differences to maintain proper LED current in the application circuit.

Q: How do lens transparency differences affect application performance?

A: The TLHB5400 and WP7083QBD/G feature diffused lenses, scattering light uniformly across the 60° viewing angle. HLMP-DB25-B0000 features a clear lens with a narrower 25° viewing angle, concentrating light output. Application requirements for light distribution and viewing angle must determine which lens type is appropriate.

Q: Are all three parts RoHS and REACH compliant?

A: Yes. TLHB5400, HLMP-DB25-B0000, and WP7083QBD/G are all ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the physical height difference between these parts?

A: TLHB5400 maximum height is 12.80mm. HLMP-DB25-B0000 is 9.19mm. WP7083QBD/G is 8.60mm. Height differences may affect PCB layout and mechanical clearance considerations in space-constrained applications.