LED Diode Q&A

Expert answers to common LED diode questions: forward voltage, current, binning, package types, failure modes and selection guidance from Queendom LED engineers.
AEC-Q102 Explained: Stress Tests for Automotive LED Chips
05.10.2026

AEC-Q102 qualifies automotive optoelectronics: temperature cycling, HTOL, 85/85 humidity and ESD stress groups Tier-1 makers [...]

Junction Temperature Limits for LED UVs in Medical Devices
05.10.2026

Continuous-operation LED UVs in medical devices should cap Tj at 75-85°C, with 70°C or below [...]

What FWHM Do SWIR LEDs Need for Food Sorting Applications?
05.10.2026

SWIR food sorting needs LED FWHM of 50-80 nm at 1200/1450 nm to match narrowband [...]

Selecting IR LEDs for Long-Range Security Camera Illumination
05.10.2026

850nm vs 940nm IR LED selection for security cameras: sensor sensitivity, radiant intensity, beam angle [...]

How Forward Current Derating Extends LED UV Diode Lifetime
04.10.2026

Driving LED UV diodes at 70-85% of rated current keeps Tj low, slows Arrhenius aging [...]

UVC 254nm Sterilization: Dose & Safety
01.10.2026

"How UVC 254nm systems deliver validated microbial control: dose design, mercury-lamp replacement economics, and the [...]

Ceramic vs Silicone for AEC-Q102 LEDs
01.10.2026

"Ceramic LED packages meet AEC-Q102 thermal, hermeticity and CTE demands across -40°C to +125°C; silicone [...]

Forward Voltage (Vf) in LED alta potenzas
30.09.2026

"Forward voltage (Vf) sets driver compliance, thermal load and binning for high-power LED diodes. Typical [...]

Radiant Flux Explained: UV & SWIR Terms
30.09.2026

"Radiant flux measures optical power in watts. The radiometric terms — irradiance, dose, peak wavelength [...]

Luminous Efficacy Explained: lm/W
30.09.2026

"Luminous efficacy measures LED output in lm/W. Why chip ratings differ from luminaire data, and [...]

UVA 365nm LED vs Mercury Lamp: Industrial Curing Compared
29.09.2026

"UVA 365nm LED heads deliver instant on/off, no warm-up and 50-70% lower energy use than [...]

Why Wavelength Binning Matters for SWIR LED Industrial Vision
29.09.2026

"SWIR LED binning sorts chips into narrow peak-wavelength windows; without it, illuminator drift breaks filter [...]

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