Specifications
| Type | Description |
|---|---|
| Part Number | EL_IR91-21C-TR10 |
| Manufacturer | EVERLIGHT |
| Product Type | SMD LED |
| Category | LED |
| Datasheet Part Number | IR91-21C/TR10 |
| Chip Material | GaAlAs |
| Lens Color | Water Clear |
| Package Description | Small double-end miniature SMD package molded in water clear plastic with spherical top-view lens |
| Package Case | 1.9 mm round subminiature Z-bend lead miniature SMD package; water clear plastic with spherical top-view lens |
| Spectral Matching | Matched with silicon photodiode and phototransistor |
| 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 table |
| Storage Temperature | -40 to +85 °C; Ta=25°C absolute maximum rating table |
| Soldering Temperature | 260 °C; soldering time <= 5 s |
| Power Dissipation | 130 mW; at or below 25°C free air temperature |
| Radiant Intensity | Min 3.0 mW/sr, Typ 5.0 mW/sr; Ta=25°C |
| Peak Wavelength | Typ 940 nm; Ta=25°C |
| Spectral Bandwidth | Typ 50 nm; IF=20 mA, Ta=25°C |
| Forward Voltage | Typ 1.2 V, Max 1.5 V; Ta=25°C |
| View Angle | Typ 25 deg; 2θ1/2, Ta=25°C |
| Reverse Current | Max 10 μA; VR=5 V, Ta=25°C |
| Rise Time | Typ 507 ns; IF=100 mA, Ta=25°C |
| Fall Time | Typ 517 ns; IF=100 mA, Ta=25°C |
| Moisture Bag Storage Condition | 10°C to 30°C and <=90% RH; before opening package |
| Recommended Use Period Before Opening | Within 1 year; stored in unopened package |
| Floor Life After Opening | 168 hours; 10°C to 30°C and <=60% RH |
| Recommended Baking Condition | 96 hours at 60°C ±5°C and <5% RH; if baking is required for reeled/tubed/loose units |
| Reflow Limit | Not more than 2 times; reflow soldering |
| Hand Soldering Condition | <350°C for <=3 s, soldering iron capacity <25 W; each terminal once with >=2 s interval |
| Carrier Tape Quantity | 1000 pcs/reel |
| Datasheet Status | request_only |
Product Overview
The EL_IR91-21C-TR10 is an EVERLIGHT infrared emitting diode in the LED category. The datasheet identifies the device as IR91-21C/TR10 and specifies GaAlAs chip material with a water clear lens. Its package is a small double-end miniature SMD package molded in water clear plastic with a spherical top-view lens, described as a 1.9 mm round subminiature Z-bend lead miniature SMD package.
Optical and electrical parameters are specified at Ta=25°C unless noted. The diode has 940 nm typical peak wavelength, 50 nm typical spectral bandwidth at IF=20 mA, 25 deg typical view angle, and radiant intensity of 3.0 mW/sr minimum and 5.0 mW/sr typical. Forward voltage is 1.2 V typical and 1.5 V maximum, while reverse current is 10 μA maximum at VR=5 V.
Assembly and handling limits include 65 mA continuous forward current, 5 V reverse voltage, 130 mW power dissipation, and operation from -25 to +85°C. The device is matched with silicon photodiode and phototransistor components, making it applicable where a compact top-view infrared emitter is paired with silicon optical receivers.
Key Features
- GaAlAs infrared emitting diode chip material
- Water clear lens for top-view infrared emission
- Miniature SMD package with Z-bend leads
- Spherical top-view lens molded in water clear plastic
- Matched with silicon photodiode and phototransistor receivers
- 940 nm typical peak wavelength at Ta=25°C
- 25 deg typical view angle at Ta=25°C
- 65 mA continuous forward current rating
- 1.2 V typical forward voltage at Ta=25°C
- 1000 pcs per reel carrier tape quantity
Typical Applications
- Silicon photodiode emitter pairing
- Phototransistor emitter pairing
- Top-view infrared sensing
- 940 nm infrared emission
- Compact SMD optical assemblies
- Infrared receiver matching circuits
Procurement Notes
When requesting a quote for EL_IR91-21C-TR10, 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 device is EL_IR91-21C-TR10?
EL_IR91-21C-TR10 is an EVERLIGHT LED identified in the datasheet as an infrared emitting diode. The extracted datasheet part number is IR91-21C/TR10, using GaAlAs chip material and a water clear lens.
What package is specified for this infrared diode?
The package is a 1.9 mm round subminiature Z-bend lead miniature SMD package. The datasheet also describes it as a small double-end miniature SMD package molded in water clear plastic with a spherical top-view lens.
What are the main optical specifications?
At Ta=25°C, the device specifies 940 nm typical peak wavelength, 25 deg typical view angle, and radiant intensity of 3.0 mW/sr minimum and 5.0 mW/sr typical. Spectral bandwidth is 50 nm typical at IF=20 mA.
What handling and soldering limits are listed?
The datasheet lists 260°C soldering temperature for no more than 5 seconds, reflow soldering not more than 2 times, and hand soldering below 350°C for no more than 3 seconds using an iron capacity below 25 W.
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.