Vishay Semiconductor Opto Division TLHR6400

Overview

TLHR6400 from Vishay Semiconductors is a red 5 mm tinted diffused LED with dominant wavelength 612–630 nm, luminous intensity 1.6–10 mcd at 10 mA, forward voltage 2–3 V at 20 mA, ±30° viewing angle, and GaAsP-on-GaP technology-designed for status indication and legend lighting in industrial control panels.

For engineers reviewing the TLHR6400 datasheet, TLHR6400 pinout, TLHR6400 application, or TLHR6400 equivalent, this page delivers verified optical, electrical, thermal, and packaging data-including absolute maximum ratings, categorized luminous intensity bins, and T-1¾ mechanical tolerances-to support reliable indicator design and BOM selection.

Technical Context

The TLHR6400 operates as a standard through-hole indicator LED using GaAsP-on-GaP heterostructure technology, delivering red light with peak wavelength at 635 nm and dominant wavelength tightly controlled between 612 nm and 630 nm. Its ±30° half-intensity angle ensures uniform on-off contrast across wide viewing zones.

Rated for DC and pulsed operation up to 1 A surge current (tp ≤ 10 μs), it supports ambient temperatures from –40 °C to +100 °C and maintains thermal resistance of 350 K/W junction-to-ambient-enabling stable performance in unventilated enclosures and high-reliability panel applications.

Key Specifications

Pinout & Package

TLHR6400 uses a standard 5 mm (T-1¾) through-hole package with axial leads: anode (longer lead) and cathode (shorter lead, flat side on housing). No internal polarity marking; mechanical orientation is defined by lead length and housing flat.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLHR6400, TLHR6401 offers +140% typical luminous intensity at same drive current, while TLHR6405 adds +40% over TLHR6401-enabling graded brightness selection within identical mechanical and thermal constraints.

Availability

TLHR6400 is available at Aetrix Electronics and suitable for status indicators, legend illumination, readout lighting, and maintenance alerts requiring stable component supply, consistent binning, and long-lifetime through-hole LED performance.

Supply support for TLHR6400 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 semiconductor manufacturer specializing in discrete components, sensors, and optoelectronics with emphasis on reliability, precision, and industrial-grade qualification.

The TLHR6400 belongs to Vishay's standard 5 mm LED product line, engineered for general-purpose visual indication in industrial controls, instrumentation, and human-machine interfaces where color consistency and mechanical interchangeability are critical.

FAQ

What is the forward voltage range of the TLHR6400 at 20 mA?

The TLHR6400 has a forward voltage range of 2 V to 3 V at 20 mA, measured per Vishay's datasheet Document Number 83219. This range reflects process variation across production lots and allows robust design of current-limiting resistor networks for both 3.3 V and 5 V supply rails. The TLHR6400's VF behavior remains stable across its operating temperature range.

Does the TLHR6400 have a specified peak wavelength?

Yes-the TLHR6400 has a peak wavelength of 635 nm, as confirmed in the "Optical and Electrical Characteristics" table of the official Vishay datasheet (Rev. 2.5, 25-Jan-2024). This value is distinct from its dominant wavelength range (612–630 nm) and defines the spectral emission maximum used for optical filter matching and colorimetric validation in the TLHR6400.

What does the "CS12Z" suffix in TLHR6400-CS12Z indicate?

The "CS12Z" suffix denotes tape-and-reel packaging with cathode-leading orientation (AS12) and ammopack-compatible labeling (Z). It does not alter the TLHR6400's electrical or optical characteristics-only packaging format and reel configuration. The base device TLHR6400 remains functionally identical whether supplied in bulk, tape-and-reel, or ammopack.

Can TLHR6400 be driven with pulsed current above 30 mA?

Yes-the TLHR6400 supports surge forward current up to 1 A for pulse widths ≤10 μs, as specified in its Absolute Maximum Ratings table. This capability enables PWM-based brightness control and transient signaling without degrading lifetime, provided average power dissipation stays within the 100 mW limit and junction temperature remains ≤100 °C. The TLHR6400's thermal resistance is 350 K/W.

Is TLHR6400 RoHS-compliant and halogen-free?

Yes-TLHR6400 complies with RoHS Directive 2011/65/EU and is halogen-free, as confirmed in Vishay's material categorization documentation (www.vishay.com/doc?99912). Environmental symbols including RoHS and lead-free markings appear on the fan-fold box label per packing specification, and the TLHR6400 uses matte tin termination finish on its leads.