Vishay Semiconductor Opto Division TLUR5401

Overview

TLUR5401 from Vishay Semiconductors is a red visible-light LED in a 5 mm tinted diffused T-1¾ package, with luminous intensity of 4–32 mcd at 10 mA, dominant wavelength of 630 nm, ±30° viewing angle, and forward voltage of 2–3 V at 20 mA-used for status indication in industrial control panels and consumer appliance interfaces.

For engineers reviewing the TLUR5401 datasheet, TLUR5401 pinout, TLUR5401 application, or TLUR5401 equivalent, key selection criteria include luminous intensity range, thermal resistance (500 K/W), DC/pulse operation capability, reverse voltage rating (6 V), and compatibility with standard 5 mm through-hole mounting and 2.54 mm pitch PCB layouts.

Technical Context

The TLUR5401 is a GaAsP-on-GaAs heterostructure LED optimized for DC and short-pulse operation, with a diffused epoxy lens providing uniform angular emission and ±30° half-intensity beam width. Its junction-to-ambient thermal resistance of 500 K/W limits continuous power dissipation to 60 mW at ≤65 °C ambient.

Rated for operation from –40 °C to +100 °C, the device supports surge forward current up to 1 A for ≤10 μs pulses and withstands soldering temperatures of 260 °C for 5 s at 2 mm from body-enabling compatibility with standard reflow and wave-solder processes.

Key Specifications

Pinout & Package

Package: Ø5 mm T-1¾ tinted diffused through-hole package with cathode flat and anode lead; standard 2.54 mm lead spacing; epoxy lens with spherical radius 2.49 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLHR5400 and TLUR5400, the TLUR5401 offers the highest guaranteed luminous intensity ceiling (32 mcd), making it preferred for applications demanding assured minimum visibility under variable lighting conditions without requiring higher drive current.

Availability

TLUR5401 is available at Aetrix Electronics and suitable for industrial control panels, consumer appliance interfaces, and test equipment requiring stable component supply with consistent optical performance and long-term manufacturing continuity.

Supply support for TLUR5401 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, specializing in high-reliability optoelectronics, power MOSFETs, resistors, and capacitors for industrial and automotive markets.

The TLUR5401 belongs to Vishay's standard 5 mm LED product line, designed for cost-effective, high-volume status indication where consistent color, wide viewing angle, and robust thermal performance are essential.

FAQ

What is the maximum continuous forward current for TLUR5401?

The TLUR5401 has a maximum DC forward current rating of 20 mA at Tamb ≤ 65 °C. Exceeding this requires derating based on ambient temperature and thermal resistance (500 K/W). At 20 mA, forward voltage is 2–3 V, and power dissipation must remain ≤60 mW to avoid exceeding the 100 °C junction temperature limit. TLUR5401 must not be operated above 20 mA in continuous mode without active thermal management.

Does TLUR5401 have a built-in current-limiting resistor?

No, TLUR5401 is a bare LED die in a 5 mm package with no integrated current-limiting resistor. External series resistance must be calculated using the forward voltage (2–3 V at 20 mA) and desired operating current. For example, at 5 V supply and 10 mA target, a 270 Ω resistor is typical. TLUR5401 relies entirely on external circuitry for current control and protection.

What does the "TLUR5401" part number suffix indicate versus TLUR5400?

The TLUR5401 designation indicates the highest luminous intensity bin within the TLUR540x family, with a specified maximum of 32 mcd (vs. TLUR5400's 15 mcd max) at 10 mA. Both share identical package, wavelength, forward voltage, and thermal specs-but TLUR5401 is binned for higher-output units, enabling designs that require guaranteed minimum brightness without increasing drive current or adding optics.

Can TLUR5401 be used in pulsed operation, and what are the limits?

Yes, TLUR5401 supports pulsed operation with a peak forward current of 1 A for pulse widths ≤10 μs and duty cycle ≤0.5%. Pulse characteristics must follow Fig. 2 in the datasheet (Document 83055). Thermal accumulation must be managed: average power must stay ≤60 mW, and junction temperature must remain ≤100 °C. TLUR5401 is commonly used in multiplexed LED arrays where such pulsing avoids visible flicker while maintaining brightness.

Is TLUR5401 RoHS-compliant and halogen-free?

Yes, TLUR5401 complies with RoHS Directive 2011/65/EU and is halogen-free per Vishay's material categorization standard (Document 99912). The device uses lead-free matte tin-plated leads and halogen-free epoxy encapsulant. Compliance documentation, including test reports and declarations, is available upon request from Vishay or authorized distributors. TLUR5401 meets environmental requirements for industrial and consumer electronics without requiring special handling or exemptions.