Vishay Semiconductor Opto Division TLHR5405

Overview

TLHR5405 from Vishay Semiconductors is a red 5 mm tinted diffused LED with luminous intensity of 6.3–14 mcd at 10 mA, dominant wavelength 612–630 nm, ±30° viewing angle, and forward voltage 2–3 V at 20 mA. It serves as an on/off indicator or status light in industrial control panels requiring high on-off contrast and uniform visual appearance.

For engineers reviewing the TLHR5405 datasheet, TLHR5405 pinout, TLHR5405 application, or TLHR5405 equivalent, this page delivers verified optical-electrical specs, package geometry, luminous intensity binning (Group Q), wavelength categorization, and direct alternatives for visual indication design.

Technical Context

The TLHR5405 uses GaAsP-on-GaP semiconductor technology to emit red light with peak wavelength at 635 nm and dominant wavelength tightly binned between 612 nm and 630 nm. Its ±30° half-intensity angle ensures wide visibility while maintaining directional contrast for panel-mounted indicators.

Rated for DC and pulsed operation up to 1 A surge current (10 μs), it supports both constant-current drive and PWM dimming across -40 °C to +100 °C ambient range. Thermal resistance junction-to-ambient is 350 K/W, limiting continuous power dissipation to 100 mW at ≤65 °C ambient.

Key Specifications

Pinout & Package

TLHR5405 is housed in a standard 5 mm T-1¾ plastic package with axial leads. Cathode is identified by flat side and shorter lead; anode is longer lead. Stand-offs are included per mechanical drawing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLHR5401, TLHR5405 delivers higher luminous intensity for improved visibility in brightly lit control rooms; compared with TLHR5405-KSZ, the base TLHR5405 offers identical performance in bulk packaging, simplifying procurement for low-volume or prototype builds.

Availability

TLHR5405 is available at Aetrix Electronics and suitable for status lights, off/on indicators, background illumination, and legend lighting requiring stable component supply and consistent visual performance across production batches.

Supply support for TLHR5405 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 Semiconductors is a global supplier of discrete semiconductors and passive components, specializing in high-reliability optoelectronics, power MOSFETs, and precision resistors.

The TLHR5405 belongs to Vishay's standard 5 mm LED product line, engineered for general-purpose visual indication with emphasis on brightness consistency, color stability, and mechanical robustness in industrial environments.

FAQ

What is the luminous intensity range of TLHR5405 and how is it binned?

The TLHR5405 has a luminous intensity range of 6.3–14 mcd at 10 mA and is categorized in Group Q (6.3–12.5 mcd). Each bag contains LEDs from only one intensity group to ensure visual uniformity-no mixing of brightness groups occurs within a single packing unit.

What is the dominant wavelength specification for TLHR5405 and why does it matter?

The TLHR5405 has a dominant wavelength of 612–630 nm, placing it in the standard red spectrum. This tight binning ensures consistent color appearance across multiple units, critical for applications like safety-critical status panels where color coding must remain unambiguous.

Can TLHR5405 be driven directly from a 3.3 V microcontroller GPIO?

Yes, TLHR5405 can be driven from a 3.3 V GPIO with an appropriate current-limiting resistor. At 20 mA forward current, its VF is 2–3 V, leaving sufficient headroom for resistor-based current control. For reliable operation, calculate R = (3.3 V − VF) / 0.02 A, using worst-case VF = 2 V → R ≈ 65 Ω.

What is the maximum continuous forward current rating for TLHR5405?

The absolute maximum DC forward current for TLHR5405 is 30 mA at ambient temperatures ≤65 °C. Exceeding this value risks exceeding the 100 mW power dissipation limit and accelerating lumen depreciation due to junction heating above 100 °C.

Does TLHR5405 have a diffused or clear lens, and how does that affect its use?

TLHR5405 features a tinted diffused lens, which scatters emitted light to produce a soft, uniform glow rather than a focused hotspot. This improves readability at oblique angles and reduces glare in enclosed or low-light environments-ideal for status and legend lighting.