Vishay Semiconductor Opto Division TLUR4400

Overview

TLUR4400 from Vishay Semiconductors is a red visible-light LED in a standard Ø 3 mm tinted diffused T-1 package, with dominant wavelength 630 nm, luminous intensity 4–15 mcd at 10 mA, forward voltage 2–3 V at 20 mA, and ±30° viewing angle. It is rated for DC and pulsed operation up to 20 mA, supports ESD withstand up to 2 kV (JESD22-A114-B), and targets front-panel status indication in industrial control panels.

For engineers reviewing the TLUR4400 datasheet, TLUR4400 pinout, TLUR4400 application, or TLUR4400 equivalent, key selection criteria include its 630 nm red emission, 15 mcd typical intensity at 10 mA, 3 mm through-hole package polarity marking (AS12 = cathode-first tape), thermal resistance of 500 K/W, and compliance with Vishay's standard luminous intensity binning (Group P/Q/R).

Technical Context

The TLUR4400 uses GaAsP-on-GaP semiconductor technology to deliver stable red light output with a peak wavelength of 640 nm and dominant wavelength of 630 nm. Its optical performance is characterized at 10 mA pulse (25 ms), with luminous intensity binned per Group P (4–8 mcd) or Q (6.3–12.5 mcd) - TLUR4400-AS12 ships in single-intensity-group packaging.

Rated for operation from –40 °C to +100 °C ambient, it features 6 V reverse voltage tolerance, 0.5 A surge current capability (tp ≤ 10 μs), and junction-to-ambient thermal resistance of 500 K/W. The device is not intended for reverse-bias continuous operation, though short-term reverse driving is noted as acceptable per datasheet footnote (1).

Key Specifications

Pinout & Package

TLUR4400 is a two-terminal through-hole LED in a standard Ø 3 mm T-1 package with axial leads. Polarity is marked by cathode lead (shorter lead, flat side on lens) and confirmed by tape orientation: AS12 denotes cathode-first feed direction in reel packaging.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLUR4400, TLUR4401 offers higher intensity headroom without changing drive circuitry, while TLHR4400 adds automotive-grade reliability at slightly higher cost - neither is pin-compatible in the sense of shared qualification or environmental rating, but all three share identical mechanical footprint and electrical interface.

Availability

TLUR4400 is available at Aetrix Electronics and suitable for industrial control panels, consumer appliance interfaces, and test equipment requiring stable component supply, consistent luminous intensity binning, and RoHS-compliant Ø 3 mm LED sourcing.

Supply support for TLUR4400 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, with design and manufacturing operations worldwide.

The TLUR4400 belongs to Vishay's standard visible LED product line, engineered for cost-effective, high-yield status indication in industrial, consumer, and instrumentation applications - prioritizing consistency, manufacturability, and broad ambient temperature operation.

FAQ

What is the luminous intensity range of the TLUR4400 at 10 mA?

The TLUR4400 has a luminous intensity range of 4–15 mcd at 10 mA, corresponding to Vishay's Group P (4–8 mcd) or Group Q (6.3–12.5 mcd) binning. Each TLUR4400-AS12 reel ships with LEDs from only one intensity group, ensuring batch-to-batch visual consistency without mixing bins.

Does the TLUR4400 support reverse-bias operation?

The TLUR4400 is rated for 6 V reverse voltage and the datasheet notes that short-term reverse driving is acceptable per footnote (1). However, it is not designed for continuous reverse conduction - sustained reverse bias may degrade performance or cause premature failure. TLUR4400 must be operated within its specified forward-bias parameters for reliable service life.

What does the "AS12" suffix mean in TLUR4400-AS12?

The "AS12" suffix indicates tape orientation: cathode lead exits the reel first. This is critical for automated pick-and-place placement and ensures correct polarity alignment during assembly. TLUR4400-AS12 is supplied in 5 × 2000-piece tape-and-reel format, with no bulk or ammopack options available for this variant.

Is the TLUR4400 RoHS compliant and halogen-free?

Yes, the TLUR4400 complies with RoHS Directive 2011/65/EU and is halogen-free per Vishay's material categorization standard (document 99912). Full compliance data, including substance declarations and test reports, is available upon request from Aetrix Electronics or directly via Vishay's compliance portal.

What is the maximum allowable forward current for continuous operation of the TLUR4400?

The absolute maximum DC forward current for the TLUR4400 is 20 mA at Tamb = 25 °C. Derating is required above 25 °C ambient per Fig. 1 in the datasheet; at 70 °C ambient, maximum continuous current drops to approximately 12 mA to maintain junction temperature ≤100 °C. TLUR4400 must not exceed this limit to ensure rated lifetime and lumen maintenance.