Specifications
| Type | Description |
|---|---|
| Part Number | EL_IR42-21C-TR8 |
| Manufacturer | EVERLIGHT |
| Product Type | SMD LED |
| Category | LED |
| Datasheet Part Number | IR42-21C/TR8 |
| LED Type | Infrared emitting diode |
| Chip Material | GaAlAs; IR chip |
| Lens Color | Water clear |
| Package Style | Miniature SMD package; molded in water clear plastic with spherical top-view lens |
| Package / Case | 1.8mm round subminiature SMD package, water clear plastic with spherical top-view lens |
| Continuous Forward Current | 65 mA; Ta=25°C absolute maximum rating |
| Reverse Voltage | 5 V; Ta=25°C absolute maximum rating |
| Operating Temperature | -25 to +85 °C; Ta=25°C absolute maximum rating |
| Storage Temperature | -40 to +85 °C; Ta=25°C absolute maximum rating |
| Soldering Temperature | 260 °C; soldering time <=5 seconds |
| Power Dissipation | 130 mW; at or below 25°C free air temperature |
| Radiant Intensity | Min 1.0 mW/sr, Typ 3.0 mW/sr; IF=20mA, Ta=25°C |
| Peak Wavelength | Typ 940 nm; IF=20mA, Ta=25°C |
| Spectral Bandwidth | Typ 45 nm; IF=20mA, Ta=25°C |
| Forward Voltage | Typ 1.2 V, Max 1.5 V; IF=20mA, Ta=25°C |
| Reverse Current | Max 10 µA; VR=5V, Ta=25°C |
| View Angle | Typ 30 deg; 2θ1/2, IF=20mA, Ta=25°C |
| Spectral Matching | Matched with silicon photodiode and phototransistor |
| Reflow Compatibility | Compatible with infrared and vapor phase reflow solder process |
| Reflow Soldering Limit | Not more than two times; Pb-free solder temperature profile |
| Hand Soldering Temperature | Less than 350°C; each terminal, within 3 seconds, once, soldering iron capacity less than 25 W |
| Storage Before Opening | 30°C or less and 90%RH or less; before opening moisture proof bag |
| Shelf Life Before Opening | Within 1 year; LEDs kept in package |
| Storage After Opening | 30°C or less and 60%RH or less; after opening package |
| Floor Life After Opening | 168 hours / 7 days; after opening package |
| Baking Treatment | 60±5°C for 24 hours; if silica gel has faded or LEDs exceeded storage time |
| Carrier Tape Quantity | 1000 pcs/reel; carrier taping dimensions |
| RoHS Compliance | RoHS compliant version; product itself will remain within RoHS compliant version |
| REACH Compliance | Compliance with EU REACH |
| Halogen Free Compliance | Br<900 ppm, Cl<900 ppm, Br+Cl<1500 ppm |
| Datasheet Status | request_only |
Product Overview
The EL_IR42-21C-TR8 is an EVERLIGHT infrared emitting diode for LED applications requiring a compact surface-mount infrared source. The datasheet identifies the device as IR42-21C/TR8 and specifies a GaAlAs IR chip molded in water clear plastic with a spherical top-view lens.
Key optical characteristics at IF=20mA and Ta=25°C include 1.0 mW/sr minimum and 3.0 mW/sr typical radiant intensity, 940 nm typical peak wavelength, 45 nm typical spectral bandwidth, and a 30 degree typical view angle. Electrical characteristics at the same condition include 1.2 V typical and 1.5 V maximum forward voltage, with reverse current limited to 10 µA maximum at VR=5V.
Assembly data notes compatibility with infrared and vapor phase reflow soldering, with Pb-free reflow limited to not more than two times. Handling limits include 168 hours / 7 days floor life after opening and baking at 60±5°C for 24 hours if storage limits are exceeded.
Key Features
- GaAlAs infrared chip construction
- Water clear spherical top-view lens
- 1.8mm round subminiature SMD package
- 940 nm typical peak wavelength
- 30 degree typical view angle
- 3.0 mW/sr typical radiant intensity
- Compatible with infrared and vapor phase reflow
- Matched with silicon photodiode and phototransistor
- RoHS compliant and EU REACH compliant
- 1000 pieces per carrier tape reel
Typical Applications
- Infrared emitter circuits
- Silicon photodiode optical links
- Phototransistor receiver systems
- 940 nm infrared sensing
- Compact SMD optical assemblies
- Reflow-soldered LED boards
Procurement Notes
When requesting a quote for EL_IR42-21C-TR8, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For LED and optoelectronic sourcing, brightness bin, wavelength or color temperature bin, forward voltage range, viewing angle, moisture sensitivity level and soldering process limits may affect final selection, availability and lead time.
FAQ
What type of LED is EL_IR42-21C-TR8?
EL_IR42-21C-TR8 is an EVERLIGHT infrared emitting diode. The datasheet identifies the related part marking as IR42-21C/TR8 and specifies a GaAlAs IR chip in a miniature SMD package.
What are the main optical specifications at 20 mA?
At IF=20mA and Ta=25°C, the device has 1.0 mW/sr minimum and 3.0 mW/sr typical radiant intensity, 940 nm typical peak wavelength, 45 nm typical spectral bandwidth, and 30 degree typical view angle.
What soldering and storage limits are specified?
The device is compatible with infrared and vapor phase reflow soldering, with Pb-free reflow limited to not more than two times. After opening, storage is 30°C or less and 60%RH or less, with 168 hours / 7 days floor life.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.