3mm Round-Head IR Emitter
3mm Infrared Emitter- Hongcheng Optoelectronics LED Manufacturer
Product Overview:
The 3mm infrared emitter uses a 3mm round-top through-hole package and a high-efficiency infrared chip that converts electrical signals into infrared optical signals. It features stable emission power, fast response, reliable operation and compact size. Different wavelengths, including 850nm and 940nm, are available to customer requirements, for infrared remote control, photoelectric detection and sensor equipment.
Key Advantages:
- 3mm round-top through-hole package for easy installation
- High infrared emission efficiency and stable optical power
- Fast response for high-speed signal transmission
- Different wavelengths and emission angles available
- Stable operation and long service life
- Supports automated insertion and wave soldering production
- Wavelength, power and lead length can be customized to customer requirements
Applications:
- TV, air conditioner and set-top box remote controls
- Infrared receiver and transmitter modules
- Photoelectric switches and photoelectric sensors
- Access control, security and anti-theft equipment
- Smart home and IoT devices
- Automatic sensor faucets and sanitary equipment
- Industrial inspection and automated control equipment
Product Features:
Chip: High-efficiency infrared LED chip with stable emission power and fast response.
Wavelength: Common infrared wavelengths including 850nm and 940nm are available; refer to the product datasheet for specifics.
Package: a high-transmission infrared-specific encapsulant provides good light transmission, heat resistance and aging resistance.
Lead frame: Highly reliable metal lead frame with good electrical conductivity and stable soldering.
Leads: standard and custom lead lengths are available for different mounting methods.
Packaging: bulk, tape or bagged packaging available for automated insertion and production lines.
Category: 3mm Emitter
Quick Reference: Key Optoelectronic Parameters (by Emission Color)
Test conditions: See the IF column for test current; ambient temperature 25℃. Data is taken from each model's datasheet. “—” indicates that the datasheet does not specify this item. Download the corresponding PDF for complete specifications.
| Emission Color | Part Number | Forward Voltage VF (V) | Wavelength / Color Temperature CCT | Optical Output (see values/notes for units) | Viewing Angle 2θ½ (°) | Test Current IF (mA) | Operating Temperature |
|---|---|---|---|---|---|---|---|
| Infrared | HC-34LU02IC6AFC-AD-H | 1.4~1.8 | 850 nm | 20~40 mW/sr | 50 | 50 | -40 ~ +80℃ |
| Infrared | HC-34LU02IC6AFC-OP-F | 1.1~1.6 | 880 nm | 30~60 mW/sr | 50 | 50 | -40 ~ +80℃ |
| Infrared | HC-IR3A940AC-S4 | 1.1~1.6 | 940 nm | 40~80 mW/sr | 30 | 50 | -30 ~ +85℃ |
3mm Round-Head Infrared Emitter An 850nm/940nm infrared emitter with a GaAs chip and a forward voltage of 1.2~1.6V, used for infrared remote-control transmission, security illumination and through-beam sensing. Supports 38kHz carrier modulation. Supplied directly by Dongguan Hongcheng Optoelectronics Co., Ltd. (an international member of Guangyu Group with over 20 years of LED packaging experience), it features Grade A chips and 99.99% pure gold wire bonding, and is RoHS certified. Free samples and custom wavelength, angle and power binning are available. Download the datasheet PDF on this page for complete electrical specifications and mounting dimensions.
Q: How should I choose between 850nm and 940nm infrared LEDs?
A: Choose 850nm for camera illumination (high sensitivity and long range), or 940nm for covert surveillance and sensing (no visible red glow). Radiant-power binning and pairing are available.
Product Specifications at a Glance
| Product Name | 3mm Round-Head Infrared Emitter |
|---|---|
| Package: | Through-hole package, round top |
| Dimensions | Φ3mm |
| Mounting: | DIP Through-hole |
| Emission Color | Infrared (invisible light, wavelength depends on part number) |
| Environmental Certification | RoHS |
| Manufacturer | Dongguan Hongcheng Optoelectronics Co., Ltd. |
| Customization: | Custom emission color, brightness, wavelength, encapsulant and lead length available |
| Detailed Specifications | See the datasheet PDF on this page for complete electrical parameters |
| Minimum Order Quantity (MOQ) | 1K（1,000 pcs） |
| Sample Lead Time | Typically 3-4 working days |
| Volume Production Lead Time | Typically 10-15 working days |
💡 Typical Applications: Common applications include TV, air conditioner and set-top box remote controls; infrared receiver and transmitter modules; photoelectric switches and sensors; access control, security and anti-theft equipment.
Ordering and Inquiry Information
Minimum order quantity: 1K (1,000 pcs); sample lead time is generally 3-4 working days, and volume production lead time is generally 10-15 working days (subject to order confirmation). For volume pricing, use the inquiry form on this page or call/message us on WeChat at 139 2571 4318. Specify the exact model and quantity in your inquiry.
Selection Recommendations
Through-hole LED lead polarity is long lead positive and short lead negative. Recommended soldering conditions are within 260℃/3 seconds. Forward voltage varies by color (1.8~3.4V); select the current-limiting resistor for the actual color.
Related Reading: LED Indicator Part Number Comparison Table (Complete 2026 Edition) ｜ Datasheet Download Center
Note: The parameters on this page were compiled against product documentation on 2026-09-17. Items not provided in a datasheet are not assigned uniform values. Refer to the datasheet for the relevant part number.
