



Cuttable COB
HST-COB400 COB LED Strip 400LEDs/m Ultra-Slim 3mm
Ultra-slim 3mm COB LED strip with 400 LEDs/m for the narrowest profiles. 7W/m power with 10mm/20mm micro-cutting and CRI 90+ dot-free output.
Specifications
- Model
- HST-COB400
- LED Type
- COB
- LED Density
- 400 LEDs/m
- 400 LEDs/m
- 3 mm
- Voltage
- 12V / 24V DC
- Power
- 7 W/m
- Color Temperature
- 2700K / 3000K / 4000K / 6500K
- CRI
- Ra 90+
- IP Rating
- IP20
- Cutting Unit
- 10 mm / 20 mm
HST-COB400 is a 3mm ultra-slim COB LED strip delivering 400 LEDs/m on the narrowest commercially available flexible PCB — engineered for lighting designers who need dot-free illumination inside profiles where standard 8mm strips physically cannot fit.
Key Specifications
Parameter | Value |
|---|---|
Model | HST-COB400 |
LED Type | COB |
LED Density | 400 LEDs/m |
PCB Width | 3 mm |
Voltage | 12V / 24V DC |
Power | 7 W/m |
Color Temperature | 2700K / 3000K / 4000K / 6500K |
CRI | Ra 90+ |
IP Rating | IP20 |
Cutting Unit | 10 mm / 20 mm |
Beam Angle | 180° |
Lifespan | 50,000 hours |
Selection Tip: Use with 4mm–6mm internal-width aluminum profiles. For outdoor or wet-area projects, request our IP-rated narrow COB variants.
Why Choose HST-COB400
- 3mm narrowest width — fits inside 4mm and 6mm aluminum profiles where no other COB strip can go
- 400 LEDs/m dot-free output — maintains continuous, seamless illumination despite extreme miniaturization
- 10mm/20mm micro-cutting — precision trimming to exact length without dark gaps at profile ends
- Tighter bending radius — the 3mm PCB flexes more easily into tight curves and radiused profiles than wider alternatives
- CRI 90+ color rendering — accurate color representation even at this compact form factor
Typical Applications
- Under-cabinet kitchen lighting in narrow 6mm profiles
- Furniture-integrated lighting (bed frames, shelving, wardrobe interiors)
- Glass shelf edge lighting in retail display cases
- Curved architectural details with tight bending radii
- Miniature signage and channel letter backlighting
Quality & Trust
The HST-COB400 uses the same premium COB phosphor technology as HSTLight's standard-width strips, ensuring spectral consistency across the product family. CE and RoHS certified.
Get a Quote
Working with tight-space constraints? contact us with your profile dimensions and quantity. Request a sample to verify the perfect fit in your aluminum channel.


