Vishay Semiconductor Opto Division TLHY5401

Overview

TLHY5401 from Vishay Semiconductors is a high-efficiency yellow LED in a 5 mm tinted diffused T-1¾ plastic package, delivering 4–12 mcd luminous intensity at 10 mA, with dominant wavelength 581–594 nm and ±30° viewing angle. It serves as an on/off indicator or status light in industrial control panels requiring high contrast and uniform color appearance.

For engineers reviewing the TLHY5401 datasheet, TLHY5401 pinout, TLHY5401 application, or TLHY5401 equivalent, this page provides verified optical/electrical specs, absolute maximum ratings, luminous intensity binning details, wavelength categorization, and direct alternatives for visual indication design.

Technical Context

The TLHY5401 uses GaAsP-on-GaP semiconductor technology optimized for visible yellow emission, with peak wavelength at 585 nm and forward voltage of 2.4 V (typ.) at 20 mA. Its ±30° half-intensity angle ensures wide, uniform illumination without hotspots.

Rated for DC and pulsed operation up to 1 A surge current (10 μs), it supports ambient temperatures from –40 °C to +100 °C and maintains stable luminous output across temperature via low thermal resistance (R_thJA = 350 K/W).

Key Specifications

Pinout & Package

TLHY5401 is housed in a standard 5 mm (T-1¾) radial-leaded plastic package with cathode-indicating flat edge and internal stand-offs. Leads are tin-plated copper, compatible with wave and reflow soldering (260 °C, 5 s).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLHY5401, AML-501SYDE offers higher output and lower VF but lacks wavelength group labeling; SSL-LX5093ID provides superior color control and eco-compliance at the cost of narrower viewing angle-both require validation of forward current and thermal management in target PCB layouts.

Availability

TLHY5401 is available at Aetrix Electronics and suitable for industrial HMIs, medical device status panels, automotive dashboard legends, and POS terminal backlighting requiring stable component supply and batch-to-batch optical consistency.

Supply support for TLHY5401 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, PA.

The TLHY5401 belongs to Vishay's standard 5 mm LED product line, engineered for reliability in general-purpose indicating applications where visual clarity, color uniformity, and long-term lumen maintenance are critical.

FAQ

What is the luminous intensity range of TLHY5401 and how is it binned?

The TLHY5401 has a luminous intensity range of 4–12 mcd at 10 mA and is categorized in Group P (4–8 mcd) per Vishay's standard binning. Each packaging unit contains LEDs from only one intensity group to ensure visual uniformity-no mixing of brightness groups occurs within a single bag or reel.

What is the dominant wavelength specification for TLHY5401 and how is it grouped?

The TLHY5401 has a dominant wavelength range of 581–594 nm and is sorted into six wavelength groups (1–6), each spanning 3 nm (e.g., Group 1: 581–584 nm). This enables precise color matching in multi-LED assemblies where chromatic consistency is essential, such as branded user interfaces.

Can TLHY5401 be driven directly from a 3.3 V microcontroller GPIO pin?

Yes, TLHY5401 can be driven from a 3.3 V GPIO with an appropriate current-limiting resistor. At 20 mA forward current, its typical forward voltage is 2.4 V, leaving ~0.9 V drop across the resistor-e.g., a 47 Ω resistor yields ~19 mA, well within its 30 mA absolute maximum rating.

What is the maximum continuous forward current and thermal limitation for TLHY5401?

The TLHY5401 supports 30 mA DC forward current at ambient temperatures ≤65 °C. Its junction-to-ambient thermal resistance is 350 K/W, meaning at 20 mA and 2.4 V (48 mW dissipation), junction temperature rise is ~16.8 °C above ambient-well within the 100 °C maximum junction temperature limit.

Does TLHY5401 have a diffused or clear lens, and how does that affect its optical performance?

TLHY5401 features a tinted diffused lens, which softens the emitted light, eliminates glare, and produces uniform illumination without hotspots. This enhances readability in bright ambient environments and improves off-axis visibility compared to clear-lens variants, supporting its ±30° half-intensity viewing angle.