Vishay Semiconductor Opto Division TLHY5400

Overview

TLHY5400 from Vishay Semiconductors is a yellow high-efficiency LED in a 5 mm tinted diffused T-1¾ plastic package, with dominant wavelength 581–594 nm, luminous intensity 1.6–10 mcd at 10 mA, and forward voltage 2.4–3.0 V at 20 mA. It delivers high on-off contrast for status indication in industrial control panels and instrumentation.

For engineers reviewing the TLHY5400 datasheet, TLHY5400 pinout, TLHY5400 application, or TLHY5400 equivalent, key selection criteria include its ±30° viewing angle, GaAsP-on-GaP semiconductor technology, luminous intensity binning (Group M), wavelength grouping (Yellow Group 1–6), and suitability for DC or pulsed operation up to 1 A surge current.

Technical Context

The TLHY5400 is a standard-indicator-class through-hole LED built on GaAsP-on-GaP epitaxial technology, optimized for visible yellow emission with peak wavelength at 585 nm. Its optical design features a wide ±30° half-intensity viewing angle and tinted diffused lens for uniform light distribution and high contrast.

Electrically, it supports continuous DC forward current up to 30 mA at ≤65 °C ambient, with absolute maximum reverse voltage of 6 V and thermal resistance of 350 K/W. Luminous intensity and dominant wavelength are binned per production lot to ensure visual consistency across assemblies.

Key Specifications

Pinout & Package

TLHY5400 uses a standard 2-pin through-hole T-1¾ (5 mm) package with axial leads. Cathode is identified by shorter lead and flat edge on lens housing. Package outline conforms to DIN specifications with Ø5.0 ±0.15 mm body and 2.54 mm lead pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar yellow LED indicator applications.

Compared with TLHY5401 and WP7113SURK, the TLHY5400 uniquely combines factory-binned luminous intensity (Group M) and wavelength (Yellow Groups 1–6) in a single-part-number solution, enabling plug-and-play visual uniformity without post-production sorting or calibration.

Availability

TLHY5400 is available at Aetrix Electronics and suitable for industrial control panels, medical device interfaces, and automotive interior indicators requiring stable component supply and long-term visual consistency.

Supply support for TLHY5400 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Vishay Intertechnology is a global manufacturer of discrete semiconductors and passive components, founded in 1962 and headquartered in Malvern, Pennsylvania.

The TLHY5400 belongs to Vishay's standard-indicator LED product line, designed specifically for reliable, high-contrast visual signaling in industrial, medical, and transportation equipment where long-term color stability and mechanical robustness are essential.

FAQ

What is the dominant wavelength range specified for TLHY5400?

The TLHY5400 has a dominant wavelength range of 581–594 nm, measured at 10 mA forward current. This places it in the warm yellow portion of the visible spectrum and enables precise color categorization into Yellow Groups 1 through 6 for visual matching across production lots.

What luminous intensity bin does TLHY5400 belong to, and why does it matter?

TLHY5400 is categorized in Luminous Intensity Group M (1.6–3.2 mcd at 10 mA). This binning ensures that all units shipped in one bag have tightly controlled brightness - critical for applications like multi-LED status arrays where inconsistent intensity would impair readability or aesthetics.

Can TLHY5400 be driven directly from a 3.3 V microcontroller GPIO pin?

Yes, TLHY5400 can be driven from a 3.3 V GPIO when used with an appropriate current-limiting resistor. With a typical forward voltage of 2.4 V at 20 mA, a ~47 Ω resistor yields ~21 mA drive - well within both GPIO capability and the LED's 30 mA absolute maximum rating.

What is the maximum allowable ambient temperature for continuous operation of TLHY5400?

The TLHY5400 is rated for continuous operation across an ambient temperature range of -40 to +100 °C. However, its DC forward current must be derated above +65 °C ambient - e.g., to ~20 mA at +85 °C - to maintain junction temperature ≤100 °C given its 350 K/W thermal resistance.

Does TLHY5400 support pulsed operation, and what are the limits?

Yes, TLHY5400 supports pulsed operation with a surge forward current rating of 1 A for pulses ≤10 μs. This enables strobing or multiplexed driving schemes in multi-LED displays, provided duty cycle and average power remain within the 100 mW power dissipation limit.