3535 Bi-Color LEDs: White + Infrared (IR)
Overview
The 3535 Bi-Color LED integrates a high-efficiency white LED and a monochromatic infrared (IR) emitter in a single surface-mount package (3.5 mm × 3.5 mm).
Designed for intelligent lighting and surveillance systems, it enables seamless transition between visible illumination and covert night-vision support.
Each channel is electrically independent, allowing precise control over white light and IR output.
Absolute Maximum Ratings
Table 1. Absolute Maximum Ratings (TA = 25°C)
| Parameters | Symbol | Max | Unit |
|---|---|---|---|
| Power Dissipation | Pd | 4 | W |
| Peak Forward Current (1/10 duty cycle, 0.1ms pulse) | IFP | 700 / 1000 | mA |
| DC Forward Current | IF | 1000 / 1200 | mA |
| Reverse Voltage | VR | 5 | V |
| Electrostatic Discharge (HBM) | ESD | 1000 | V |
| Operating Temperature Range | Topr | -25°C to +80°C | |
| Storage Temperature Range | Tstg | -35°C to +100°C | |
| Soldering Temperature | Tsld | 260°C for 5 seconds |
Note: Pulse width ≦100 μs, Duty ≦1%.
Available Models & Part Numbers
3535 White+IR LEDs & Part Numbers
Table 2. Optical & Electrical Characteristics (Tj = 25°C)
| Product | Rank No. | Nominal (nm/K) | Forward Voltage (V) | Radiant Intensity IR (mW/sr) | White Flux (lm) | Test Current (mA) | Part Number | ||
|---|---|---|---|---|---|---|---|---|---|
| Min | Max | Min | Typ | ||||||
| HP3535IRW1 | THLIW1001 | 850nm / 6000K | 1.40 | 3.20 | 120 | 160 | 18 | 300 | IRW3535THLIW1001 |
| HP3535IRW2 | THLIW1002 | 940nm / 6500K | 1.40 | 3.20 | 180 | 260 | 20 | 300 | IRW3535THLIW1002 |
| HP3535IRW3 | THLIW1003 | 850nm / 4000K | 1.40 | 3.20 | 260 | 380 | 22 | 500 | IRW3535THLIW1003 |
| HP3535IRW4 | THLIW1004 | 940nm / 5000K | 1.40 | 3.20 | 450 | 700 | 25 | 800 | IRW3535THLIW1004 |
| HP3535IRW5 | THLIW1005 | 850nm / 6000K | 1.40 | 3.30 | 600 | 900 | 28 | 1000 | IRW3535THLIW1005 |
| HP3535IRW6 | THLIW1006 | 940nm / 6500K | 1.40 | 3.30 | 750 | 1100 | 30 | 1000 | IRW3535THLIW1006 |
Ideal for day/night adaptive lighting systems such as:
• Security cameras with auto-switching visible/IR illumination
• Smart streetlights with human-visible lighting + IR motion sensing
• Machine vision systems requiring multi-spectral illuminationNote: White and IR channels must be driven independently using a dual-channel constant-current driver.
Actual pinout may vary by rank—refer to datasheet before PCB design.
Key Benefits
- Single-package solution reduces PCB space and assembly cost
- Enables intelligent switching between visible and covert illumination
- High thermal stability ensures consistent white color and IR output
- Flexible beam angles for targeted or wide-area coverage





