Vishay Semiconductor Opto Division TLWR8600

Overview

TLWR8600 from Vishay Semiconductors is a high-flux red AlInGaP-on-GaAs power LED in a 7.62 mm square TELUX package, rated for 70 mA DC forward current, delivering 2000–3700 mlm luminous flux at 611–634 nm dominant wavelength and 2.2 V typical forward voltage. It operates from −40 °C to +110 °C ambient and meets SAE/ECE automotive color requirements for tail and stop signals.

For engineers reviewing the TLWR8600 datasheet, TLWR8600 pinout, TLWR8600 application, or TLWR8600 equivalent, this device is selected for high-temperature exterior vehicle lighting where luminous flux homogeneity, thermal robustness (R_thJP = 90 K/W), and AEC-Q101 qualification are critical design constraints.

Technical Context

The TLWR8600 uses AlInGaP-on-GaAs die technology optimized for red spectral output with peak wavelength at 624 nm and dominant wavelength binned to ±3 nm tolerance (611–634 nm). Its 7.62 mm square TELUX package features a cathode heatsink pad enabling R_thJA = 200 K/W with 70 mm² copper area, supporting stable operation up to 125 °C junction temperature.

Optical performance is defined by ±30° angle of half intensity and 75° total included angle capturing 90% of total flux. Luminous flux, forward voltage, and dominant wavelength are binned per tube-no mixing across brightness or color groups-to ensure consistent light appearance in multi-LED assemblies.

Key Specifications

Pinout & Package

The TLWR8600 is housed in the industry-standard TELUX 7.62 mm × 7.62 mm surface-mount package with two terminals: anode and cathode. The cathode is marked by a notch and designated pad area (6.55 mm × 4.65 mm) optimized for thermal conduction to PCB copper.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLWR7600, the TLWR8600 delivers +32% higher minimum luminous flux and tighter dominant wavelength control (±3 nm vs. ±5 nm), making it preferred for regulatory-compliant stop lamps; versus LXML-PWC2-0080, TLWR8600 offers superior thermal robustness in large-area PCB mounting but lower lumen density.

Availability

TLWR8600 is available at Aetrix Electronics and suitable for automotive exterior lighting, dashboard illumination, and traffic signal applications requiring stable component supply, AEC-Q101 qualification, and consistent binned photometric performance.

Supply support for TLWR8600 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 manufacturer of discrete semiconductors and passive components, specializing in high-reliability optoelectronics, power MOSFETs, and precision resistors for automotive, industrial, and computing markets.

The TELUX product line was designed specifically for high-flux, high-temperature automotive exterior lighting, leveraging AllnGaP technology and precision binning to meet stringent SAE/ECE photometric and thermal requirements.

FAQ

What is the maximum continuous forward current rating for TLWR8600?

The TLWR8600 has a DC forward current rating of 70 mA at ambient temperatures ≤85 °C. At higher ambient temperatures, derating is required per Figure 1 in the datasheet; operation above 70 mA risks exceeding the 125 °C maximum junction temperature and violating AEC-Q101 lifetime validation. Always verify thermal design using R_thJA = 200 K/W with 70 mm² cathode copper.

Does TLWR8600 require external current limiting in circuit design?

Yes, TLWR8600 requires constant-current drive - not constant-voltage - due to its exponential forward voltage vs. current characteristic. A dedicated LED driver IC or resistor-based current source must be used to maintain 70 mA nominal operation; unregulated 12 V supply will cause thermal runaway and premature failure of the TLWR8600.

Is TLWR8600 compatible with lead-free reflow soldering processes?

Yes, TLWR8600 is qualified for lead-free reflow per J-STD-020 and wave soldering per CECC 00802. Peak solder temperature must not exceed 260 °C for ≤5 seconds at 1.5 mm from the package body, with preheat to 100 °C for 30 s. The silicone lens remains stable under these conditions, preserving optical clarity and flux output.

How is luminous flux binned for TLWR8600, and what does the "D" group indicate?

TLWR8600 is binned into luminous flux groups D–L per the datasheet table; group D specifies 2000–3000 mlm at 70 mA. Each tube contains only one flux group, one dominant wavelength group (e.g., "2" = 614–622 nm), and one forward voltage group (e.g., "1" = 2.19–2.43 V), ensuring uniformity. The full part marking includes all three bin codes (e.g., SELB10).

Can TLWR8600 be used in reverse-bias configurations?

The TLWR8600 datasheet permits short-term reverse bias (note 1), but only for transient protection or specific multiplexed driving schemes - not continuous operation. Reverse voltage is limited to 10 V at 100 μA leakage; sustained reverse bias exceeds absolute maximum ratings and risks junction degradation. For bidirectional applications, use a dedicated reverse-blocking circuit, not the TLWR8600 itself.