Vishay Semiconductor Opto Division TLWR8903

Overview

TLWR8903 from Vishay Semiconductors is a high-flux red AlInGaP-on-GaAs power LED in the TELUX series, designed for automotive exterior lighting where luminous output and thermal robustness are critical. It delivers 3000–4800 mln total flux at 70 mA, operates from −40 °C to +110 °C ambient, and features ±45° half-intensity angle with dominant wavelength 611–634 nm - enabling use in tail, stop, and turn signal modules.

For engineers reviewing the TLWR8903 datasheet, TLWR8903 pinout, TLWR8903 application, or TLWR8903 equivalent, this page provides verified specifications, thermal resistance (RthJP = 90 K/W), AEC-Q101 qualification status, SAE/ECE red color compliance, and binned optical parameters - all essential for automotive lighting design validation and component selection.

Technical Context

The TLWR8903 is a surface-mount, non-diffused, clear-lens power LED optimized for high-temperature operation in harsh environments. Its AlInGaP-on-GaAs die structure enables high radiant efficiency in the red spectrum (611–634 nm), while its 7.62 mm × 7.62 mm TELUX package integrates a cathode heatsink pad for thermal management.

It supports wave soldering per CECC 00802, withstands 2 kV ESD (JESD22-A114-B), and is binned by luminous flux (Group F: 3000–4200 mln), dominant wavelength (Group 1–3), and forward voltage (Group Z/0/1) - ensuring consistent photometric performance across production lots.

Key Specifications

Pinout & Package

The TLWR8903 uses the industry-standard TELUX 7.62 mm × 7.62 mm surface-mount package with exposed cathode thermal pad. Cathode is marked by a polarity notch on the package edge.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLWR8903, TLWR8902 offers tighter VF control for predictable driver loading, while TLWR8901 trades flux consistency for broader bin availability - making TLWR8903 the optimal choice for ECE-regulated exterior signaling requiring guaranteed minimum output and thermal stability.

Availability

TLWR8903 is available at Aetrix Electronics and suitable for automotive tail lamp modules, stop signal assemblies, turn signal indicators, and dashboard warning lights requiring stable component supply and AEC-Q101 compliance.

Supply support for TLWR8903 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 leader in discrete semiconductors and passive components, specializing in high-reliability devices for automotive, industrial, and computing markets.

The TELUX series was developed specifically for high-flux, high-temperature automotive lighting applications - prioritizing luminous output consistency, thermal resilience, and regulatory color compliance over general-purpose LED versatility.

FAQ

What is the maximum continuous forward current for TLWR8903?

The TLWR8903 is rated for 70 mA DC forward current at ambient temperatures ≤ 85 °C. At higher ambient temperatures (up to +110 °C), current must be derated per Fig. 1 in the datasheet. The device also supports 1 A surge current for ≤10 μs pulses, useful for diagnostic flashing sequences. Always verify thermal layout achieves RthJA ≤ 200 K/W to sustain full-rated current.

Does TLWR8903 meet automotive regulatory standards for red lighting?

Yes, TLWR8903 meets both SAE J575 and ECE R37 requirements for red color in automotive exterior lamps. Its dominant wavelength range (611–634 nm) and binned spectral groups ensure compliance across production lots. It is also AEC-Q101 qualified, covering stress tests including temperature cycling, humidity, and mechanical shock required for vehicle deployment.

How is TLWR8903 binned, and what does the SEL code indicate?

TLWR8903 is binned by three parameters: luminous flux (Group F = 3000–4200 mln), dominant wavelength (e.g., Group 2 = 614–622 nm), and forward voltage (e.g., Group 0 = 2.07–2.31 V). The SEL code on the tube label encodes these three bins - digit 1 = flux group, digit 2 = wavelength group, digit 3 = VF group - ensuring photometric uniformity within each tube.

What is the thermal resistance junction-to-pin (RthJP) of TLWR8903, and why does it matter?

The TLWR8903 has RthJP = 90 K/W, measured from junction to cathode pad. This low value enables efficient heat transfer from the die directly into the PCB copper, critical for maintaining junction temperature ≤ 125 °C in high-ambient environments like trunk compartments or rear lamp housings. Proper cathode pad sizing (≥70 mm²) is required to realize this thermal performance.

Can TLWR8903 be used in wave soldering processes?

Yes, TLWR8903 is qualified for wave soldering per CECC 00802. It withstands a peak temperature of 260 °C for 5 seconds at 1.5 mm from the package body. Preheat to 100 °C for 30 seconds is recommended. Ensure adequate thermal relief on cathode pad to avoid tombstoning, and confirm solder mask clearance around the exposed cathode area per drawing 6.544-5321.01-4.