Vishay Semiconductor Opto Division TLWR8601

Overview

TLWR8601 from Vishay Semiconductors is a red AlInGaP-on-GaAs power LED in a 7.62 mm square TELUX package, delivering 2000–3700 mlm luminous flux at 70 mA, with dominant wavelength 611–634 nm, forward voltage 1.83–2.67 V, and ±30° viewing angle-designed for automotive exterior lighting requiring high-temperature operation up to +110 °C.

For engineers reviewing the TLWR8601 datasheet, TLWR8601 pinout, TLWR8601 application, or TLWR8601 equivalent, this device supports SAE/ECE-compliant red signaling, operates across -40 °C to +110 °C ambient, features R_thJP = 90 K/W thermal resistance, and is AEC-Q101 qualified for automotive-grade reliability.

Technical Context

The TLWR8601 uses AllnGaP technology on GaAs substrate to achieve high radiant efficiency in the red spectrum, with peak wavelength at 624 nm and dominant wavelength binned per group (e.g., Group 3: 616–634 nm). Its thermal design enables stable optical output under high ambient temperatures due to low junction-to-pin thermal resistance (90 K/W) and compatibility with cathode heatsinks.

Optical performance is defined by a ±30° half-intensity angle and 75° total included angle capturing 90% of total flux. Electrical behavior includes 70 mA DC forward current rating, 1 A surge capability (10 μs), and reverse voltage tolerance up to 10 V-validated per JESD22-A114-B ESD testing (2 kV HBM).

Key Specifications

Pinout & Package

TLWR8601 uses a 2-pin surface-mount TELUX package (7.62 mm × 7.62 mm × 6.55 mm) with cathode marking (C) on the top surface and anode/cathode terminals on opposite sides of the base. The package is designed for wave soldering (CECC 00802/J-STD-020 compliant) and features a cathode pad optimized for thermal conduction.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLWR7600 and LXML-PWC2-0080, TLWR8601 offers optimal balance of high-flux output, automotive-grade thermal robustness, and drop-in compatibility with existing TELUX footprint designs-making it preferred for exterior signaling where reliability and regulatory compliance are non-negotiable.

Availability

TLWR8601 is available at Aetrix Electronics and suitable for automotive exterior lighting, dashboard illumination, and traffic signal applications requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.

Supply support for TLWR8601 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-leveraging AllnGaP-on-GaAs technology to meet SAE/ECE spectral and thermal requirements without optical compensation.

FAQ

What is the maximum continuous forward current for TLWR8601?

The TLWR8601 is rated for 70 mA DC forward current at ambient temperatures ≤ 85 °C. At higher ambient temperatures, current must be derated per Fig. 1 in the datasheet; for example, at Tamb = 100 °C, maximum IF drops to approximately 45 mA to maintain junction temperature below 125 °C. TLWR8601 thermal performance relies on proper cathode pad thermal coupling to PCB copper.

Does TLWR8601 meet automotive regulatory standards for red lighting?

Yes, TLWR8601 meets both SAE J578 and ECE R7 requirements for red exterior lighting when operated within its specified dominant wavelength range (611–634 nm) and luminous intensity profile. It is AEC-Q101 qualified and binned to ensure color consistency across production lots-critical for certification of tail, stop, and turn signal assemblies.

What is the thermal resistance junction-to-ambient (RthJA) for TLWR8601?

TLWR8601 has R_thJA = 200 K/W when mounted with a cathode heatsink area of 70 mm². This value assumes standard PCB layout with thermal vias and copper pour. For improved thermal performance, increasing cathode pad size reduces R_thJA-e.g., 200 mm² pad lowers R_thJA to ~160 K/W per Fig. 14 in the datasheet. TLWR8601's R_thJP remains fixed at 90 K/W regardless of layout.

Can TLWR8601 be used in wave soldering processes?

Yes, TLWR8601 is qualified for wave soldering per CECC 00802 and J-STD-020 standards. Recommended preheat temperature is 100 °C for 30 seconds, with peak solder temperature not exceeding 260 °C for ≤5 seconds measured 1.5 mm from the package body. The device's epoxy lens and leadframe construction are engineered to withstand these thermal profiles without delamination or optical degradation.

How is luminous flux binned for TLWR8601, and what does the 'D' group indicate?

TLWR8601 is binned for luminous flux into groups D–L per the LUMINOUS FLUX CLASSIFICATION table; Group D specifies 2000–3000 mlm at 70 mA. Each tube contains LEDs from only one flux group, one dominant wavelength group (e.g., Group 3 for 616–634 nm), and one forward voltage group (e.g., Group 1 for 2.19–2.43 V)-ensuring uniform photometric behavior. TLWR8601 Group D units are commonly selected for cost-optimized stop lamp designs where minimum 2000 mlm suffices.