Vishay Semiconductor Opto Division TLWR8901

Overview

TLWR8901 from Vishay Semiconductors is a high-flux red TELUX LED in a 7.62 mm square package, utilizing AlInGaP-on-GaAs technology for automotive-grade luminous output. It delivers 2000–4800 mlm at 70 mA, with dominant wavelength 611–634 nm, forward voltage 1.83–2.67 V, and operates from −40 °C to +110 °C - designed for tail/stop/turn signal modules requiring SAE/ECE-compliant red light.

For engineers reviewing the TLWR8901 datasheet, TLWR8901 pinout, TLWR8901 application, or TLWR8901 equivalent, this page provides verified thermal resistance (RthJP = 90 K/W), binned luminous flux classification (Group G: 3500–4800 mlm), AEC-Q101 qualification status, ±45° viewing angle, and wave-solder compatibility per CECC 00802 - all critical for exterior lighting design validation.

Technical Context

The TLWR8901 is a surface-mount, non-diffused power LED optimized for high-temperature ambient operation (Tamb up to +110 °C) and precise optical control via its ±45° half-intensity angle and 100° total included angle capturing 90% of flux. Its AlInGaP-on-GaAs die structure enables stable red emission with peak wavelength at 624 nm and dominant wavelength tightly binned per group 1–3 (611–634 nm).

Thermal performance is defined by RthJP = 90 K/W (junction-to-pin) and RthJA = 200 K/W (with 70 mm² cathode heatsink), supporting sustained 70 mA DC drive under automotive thermal constraints. ESD withstand voltage is rated at 2 kV (HBM, JESD22-A114-B), and reverse voltage tolerance is 10 V at IR = 100 μA.

Key Specifications

Pinout & Package

TLWR8901 uses a 2-terminal surface-mount TELUX package (7.62 mm × 7.62 mm × 5.08 mm), with cathode marked by polarity indicator on top surface. The package features a large cathode pad (4.65 mm × 2.65 mm) for thermal conduction and mechanical stability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLWR8901, TLWR8902 offers tighter low-end flux assurance but slightly higher forward voltage, while the OSRAM alternative trades qualification rigor for marginal flux gain and relaxed thermal specs - making TLWR8901 the optimal balance of automotive compliance, thermal headroom, and binning control.

Availability

TLWR8901 is available at Aetrix Electronics and suitable for tail lamp modules, stop lamp assemblies, turn signal indicators, and dashboard backlighting requiring stable component supply across automotive production lifecycles.

Supply support for TLWR8901 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 exterior lighting, leveraging AlInGaP-on-GaAs to meet SAE/ECE spectral and thermal requirements without optical compensation.

FAQ

What is the maximum continuous forward current for TLWR8901?

The TLWR8901 supports a DC forward current of 70 mA at ambient temperatures ≤85 °C. At higher ambient temperatures, derating is required per Figure 1 in the datasheet. The surge forward current rating is 1 A for pulses ≤10 μs. This rating ensures robust operation in automotive stop/tail lamp switching transients without thermal runaway.

Does TLWR8901 require external color filtering to meet ECE R37?

No - TLWR8901 is manufactured with dominant wavelength binned to 611–634 nm (Group 1–3), which falls within the ECE R37 red spectral limits (600–640 nm). Its AlInGaP-on-GaAs die emits spectrally pure red light, eliminating the need for absorptive or dichroic filters that reduce optical efficiency and increase thermal load in the TLWR8901 lamp assembly.

How is luminous flux binned for TLWR8901, and what does Group G mean?

TLWR8901 is binned into luminous flux groups per the LUMINOUS FLUX CLASSIFICATION table: Group G covers 3500–4800 mlm at 70 mA. Each tube contains LEDs from a single flux group only - no mixing. Group G ensures predictable photometric output for lamp-level calibration and avoids overdesigning optics to accommodate worst-case flux variation across the full 2000–4800 mlm range.

Can TLWR8901 be wave soldered without damage?

Yes - TLWR8901 is qualified for wave soldering per CECC 00802, with a maximum soldering temperature of 260 °C for ≤5 s at 1.5 mm from the body. Preheat to 100 °C for 30 s is recommended. This qualification enables high-yield, lead-free assembly in automotive PCB manufacturing lines without requiring selective soldering or post-assembly rework.

Is TLWR8901 suitable for reverse-biased operation?

The TLWR8901 datasheet notes that short-term reverse bias is permissible (VR = 10 V at IR = 100 μA), but it is not designed for sustained reverse conduction. Reverse operation may be used for diagnostic signaling or transient protection in multiplexed arrays, but long-term reverse voltage exposure risks degradation. For bidirectional applications, dedicated dual-LED packages or external protection diodes are recommended instead of relying on TLWR8901 reverse capability.