What is the typical lifespan of this product?

The product is designed for long-term industrial use, with a typical lifespan of over 50,000 hours.

Do you support OEM or custom specifications?

Yes, we support OEM, ODM, and custom technical specifications based on project requirements.

What certifications are available?

Certifications vary by model and may include CE, RoHS, LM-80, and ISO-compliant manufacturing.

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3535 Far‑Infrared LEDs

Name: 3535 Far‑Infrared LEDs
Brand: QUEENDOM

Technical Specifications

3535 Far-Infrared LEDs (1000–2060 nm)

Package Type: SMD (3535 size, 3.5 mm × 3.5 mm)
Wavelength Range: 1000–2060 nm
Available Peak Wavelengths:
- 1050 nm, 1200 nm, 1300 nm, 1400 nm, 1500 nm, 1600 nm, 1750 nm, 1950 nm, 2060 nm
Chip Material: GaAs / AlGaAs / InGaAs (wavelength-dependent)
Chip Source: CREE, OSRAM, Toyoda Gosei, Epistar, Sanan (selected by performance grade)
Chip Sizes: 12×35 mil, 14×28 mil, 16×30 mil (configuration-specific)
Forward Voltage (V_F): 1.4 V – 2.4 V (typical @ rated current)
Operating Current: 300 mA – 700 mA (continuous, depending on rank)
Rated Optical Power: 1 W – 4 W (varies by wavelength and thermal design)
Radiant Intensity: Rank-specific; full performance table available upon request
Viewing Angle: 120°
Substrate: High-thermal-conductivity ceramic (AlN or Al₂O₃)
Lens Appearance: Clear, colorless silicone
Operating Temperature: −40°C to +85°C
Storage Temperature: −40°C to +100°C
Absolute Maximum Ratings:
- Junction Temperature (T_j): +150°C
- ESD Withstand Voltage: ≥2 kV (HBM)
Compliance: RoHS 3, REACH, IEC/EN 62471 (Photobiological Safety – Risk Group 1)

Note: For wavelengths >1400 nm, standard silicon photodiodes have low responsivity.
InGaAs or PbS detectors are recommended for optimal signal reception.

Category: Infrared Emitters Tag: Far‑Infrared LEDs

Description

3535 Far‑Infrared LED (1000–2000 nm)

Overview

The 3535 far‑infrared LED series is built on a ceramic‑based 3.5 × 3.5 mm SMD package and operates across the 1000–2000 nm wavelength range.
It delivers stable radiant output suitable for heating‑related equipment, drying systems, infrared illumination modules, and controlled thermal environments.
The robust thermal structure supports long‑duration operation in industrial applications.

Multiple nominal wavelengths and radiant‑intensity levels are available, enabling engineers to match different material absorption characteristics and system requirements.
The series is suitable for compact IR emitter modules, multi‑channel infrared arrays, and custom industrial IR systems.

Available Models & Part Numbers

Table 1. Typical Optical and Electrical Characteristics (T_j = 25°C).

Model	Rank Code	Color Type	Wavelength (nm)		Radiant Intensity (mW/sr）		Forward Voltage VF (V)		Viewing Angle	Test Current	Part Number
Device Model	Rank	Typical λ (nm)	Min	Max	Min	Max	Min	Max	(2θ½, °)	(mA)	P/N
HP3535IV2WF	SMDIL0816	1050	1000	1080	180	360	1.40	2.40	120	700	8541401000SMDIL0816
HP3535IW2WF	SMDIL0817	1200	1120	1240	150	280	1.40	2.40	120	700	8541401000SMDIL0817
HP3535IX2WF	SMDIL0818	1300	1240	1360	120	260	1.40	2.40	120	700	8541401000SMDIL0818
HP3535IY2WF	SMDIL0819	1400	1360	1480	110	240	1.40	2.40	120	700	8541401000SMDIL0819
HP3535IZ2WF	SMDIL0820	1500	1480	1600	90	180	1.40	2.40	120	700	8541401000SMDIL0820
HP3535IA12WF	SMDIL0821	1600	1600	1720	80	160	1.40	2.40	120	700	8541401000SMDIL0821
HP3535IA22WF	SMDIL0822	1750	1720	1840	60	130	1.40	2.40	120	700	8541401000SMDIL0822
HP3535IA32WF	SMDIL0823	1950	1840	1960	50	100	1.40	2.40	120	700	8541401000SMDIL0823
HP3535IA42WF	SMDIL0824	2060	1960	2080	30	90	1.40	2.40	120	700	8541401000SMDIL0824

FEATURES｜Product Advantages

Far‑infrared wavelength options from 1050–2060 nm for industrial IR systems.
3535 ceramic SMD package with high thermal conductivity.
Stable radiant output suitable for continuous operation.
Multiple radiant‑intensity ranks for different design requirements.
120° wide viewing angle for uniform infrared distribution.
Compliant with ROHS, REACH and EN62471 photobiological safety standards.

APPLICATION｜Typical Applications

Industrial infrared heating modules.
Drying and thermal‑processing equipment.
Infrared illumination for inspection and sensing systems.
Moisture‑control heating in electrical cabinets and enclosures.
Laboratory instruments requiring far‑infrared light sources.
Compliance: RoHS 3, REACH, IEC/EN 62471 (Photobiological Safety – Risk Group 1)

ℹ️ APPLICATION NOTE:
Far-infrared LEDs (1000–2060 nm) are used in non-visible sensing applications such as gas analysis, moisture detection, spectroscopy, and industrial process monitoring.
They emit no visible light and pose minimal photobiological risk under normal use.