MWIR LED

MWIR LED research and design enquiries for the 3–5μm band

Name: DOWA MWIR LED published R&D models (3.1–4.3μm)
Brand: DOWA Electronics

MWIR generally denotes the 3–5μm band. The published model table below lists 3.1, 3.7, 3.9, 4.1 and 4.3μm R&D products. The 2.1–2.3μm products are identified separately as extended SWIR supply, not MWIR.

BAND DEFINITION

Visible

SWIR

MWIR

200nm1000nm3000nm5000nm+

R&D documents and samples

Send the target gas, wavelength, detector and quantity so we can confirm model documentation and evaluation availability.

Send MWIR requirements DOWA MWIR technology page

R&D specifications and sample availability are reconfirmed at the time of enquiry.

SUPPLY AND REVIEW SCOPE

Supply and review scope

Published MWIR models: 3.1–4.3μm

The models documented on this page span 3,100–4,300nm. Other wavelengths in the broader 3–5μm band require individual confirmation.

R&D stage

Electrical and optical characteristics and sample availability are confirmed by model and evaluation timing.

NDIR wavelength review

Candidate wavelengths are narrowed down together with the target gas absorption band, detector and optical path length.

Extended SWIR supplied separately

The 2,100, 2,200 and 2,300nm models are classified and listed separately as extended SWIR.

PUBLISHED MWIR MODELS

3.1–4.3μm R&D products

The table retains the existing published model values. It does not imply routine availability across the entire 3–5μm band; wavelengths outside the table require confirmation.

MWIR bare chip — 500μm × 500μm @ 300mA

Model	Peak λ	Po @300mA	Vf	Chip size	Application review
3.1 μm LED	3,100 nm	0.2 mW	0.3 V	500×500 μm	Review near the 2,900nm band
3.7 μm LED	3,700 nm	0.4 mW	0.3 V	500×500 μm	Spectroscopy research
3.9 μm LED	3,900 nm	0.3 mW	0.3 V	500×500 μm	Hydrocarbon detection review
4.1 μm LED	4,100 nm	0.4 mW	0.3 V	500×500 μm	Reference-channel review
4.3 μm LED	4,300 nm	0.1 mW	0.3 V	500×500 μm	CO₂ NDIR review

SEPARATE PRODUCT BAND

Extended SWIR 2.1–2.3μm

The 2,100–2,300nm models belong to the extended-SWIR supply line, not the 3–5μm MWIR band, and are therefore listed separately.

Extended-SWIR large bare chip — 1080μm × 1080μm @ 1.0A

Model	Peak λ	Po @1.0A	Vf	Chip size	Application review
21RXBR	2,100 nm	20 mW	0.8 V	1080×1080 μm	Extended-SWIR sensing
22RXBR	2,200 nm	12 mW	0.8 V	1080×1080 μm	Extended-SWIR sensing
23RXBR	2,300 nm	6 mW	0.8 V	1080×1080 μm	CO-band review

DESIGN REFERENCE

Selected molecular absorption bands

These values are absorption-band references for initial wavelength review, not a product-availability list. Sensor design must also consider the gas spectrum, detector and filter.

2,300 nm

2,400 nm

CO₂

2,900 nm

Water · Lipid

3,300 nm

CH₄ (Methane)

4,300 nm

CO₂

4,600 nm

WAVELENGTH SELECTION

MWIR and extended-SWIR review by target

Published model wavelengths are distinguished from absorption-band references. Proximity to an absorption band does not by itself establish suitability; system evaluation is required.

Target	Review wavelength	Supply and design note
CO₂	4,300 nm	A published 4.3μm MWIR model is listed; evaluate it with the detector and filter.
CO	2,300 / 4,600 nm	2,300nm is the 23RXBR extended-SWIR model. 4,600nm is an absorption reference and is not in the published model table.
Methane (CH₄)	3,300 nm	Absorption-band reference. No 3,300nm model is listed in the published product table.
Hydrocarbons	3,900 nm	Review the published 3.9μm MWIR model as an evaluation candidate.
Reference channel	4,100 nm	A published 4.1μm MWIR model; confirm reference suitability against the target-gas spectrum.