SOB Ultra-Narrow LED Strip Light (#13921)
5mm · 24V · 350LEDs · 20cut
Model: 13921
Overview
The DENO LED model 13921 is a premium 5mm SOB Ultra-Narrow LED Strip, designed for sophisticated B2B lighting applications requiring ultimate discretion and performance. Operating at 24V, this strip offers a high density of 350LEDs/m, ensuring a dot-free, uniform light emission with a wide 180° beam angle. Its flexible design and ultra-narrow 5mm PCB width make it ideal for integration into tight spaces, architectural accents, and display lighting. Certified with LM-80 appr...
Description
SOB Ultra-Narrow LED Strip Light | 5mm | 24V | 20cut | 350LEDs | #13921 SOB is a cutting-edge linear solution that combines flexibility and versatility Experience the seamless integration of technology and ambiance with SOB. Whether you want to create a captivating atm osphere or add a touch of sophistication to your space, these flexible LED light strips are the perfect choice without glare Upgrade your lighting with CSP and embrace the endless possibilities of captivating illumination Dot-free with big emitting angle, Stronger Anti-bending resistance LM-80 approval
Specifications
| LED QTY | 350LEDs/m |
|---|---|
| PART NO | DL-FSOBA175V24-13921-* |
| SMD TYPE | SOB |
| CUTTABLE UNIT | 7LEDs/20mm |
| DIMMABLE | Yes |
| LED PITCH | 2.857mm |
| PCB WIDTH | 5mm |
| BEAM ANGLE | 160° |
| LENGTH MAX | 5m |
| COPPER FOIL | 2oz |
| ON OFF TIMES | 10000（test times） |
| POWER RANGE | 6~15W |
| CIRCUIT TYPE | C.V. (Resistor Based) |
| INPUT VOLTAGE | 24V |
| MIN BEND DIAMETER | Φ60mm |
| OPERATING TEMPERATURE | -25~40°C; Tc: 75°C (max) |
Applications
- Cove, wall-wash & perimeter lighting — Coves, recesses, wall-wash details and ceiling perimeters where a continuous, uniform line of light is required.
- Showroom & hospitality display lighting — Shelving, display cases, reception desks and signage backlighting in shops, showrooms and hospitality spaces.
- Kitchen & wardrobe under-cabinet lighting — Kitchen, wardrobe and furniture task lighting where the strip stays hidden and only the light is seen.
- Ultra-narrow 5mm channels & shadow gaps — Fits shadow-gap details, slim profiles and joinery grooves that cannot take a standard 8–10mm strip.
Request a quotation for #13921
DENO LED is a Shenzhen-based LED strip manufacturer with its own Foshan production base. Send the run length, voltage, CCT/CRI and IP rating you need and our engineering team replies with a specification sheet, wiring plan and price — OEM/ODM and fully custom builds included.
- Warranty: 5 years
- Compliance: CE · UL · RoHS
- Bonding wire: 99.99% pure gold
- Copper foil: 99.9% pure copper FPCB
Photometric Performance — CCT × CRI Efficacy Matrix
Peak measured luminous efficacy: 124.9 lm/W at 5000K, Ra 90, ErP energy class E (Grade DN (1st Tier) · 6W/m).
All values are measured at the stated power density and ambient 25 °C, reported as luminous efficacy in lumens per watt (lm/W), luminous flux per metre (lm/m) and the corresponding EU ErP (2019/2015) energy class.
Grade DL (2nd Tier) · 6W/m
| CCT (K) | Ra 80 — Luminous Efficacy (lm/W) | Ra 80 — Luminous Flux (lm/m) | Ra 80 — ErP Energy Class | Ra 90 — Luminous Efficacy (lm/W) | Ra 90 — Luminous Flux (lm/m) | Ra 90 — ErP Energy Class | Full Spectrum (Ra 95+) — Luminous Efficacy (lm/W) | Full Spectrum (Ra 95+) — Luminous Flux (lm/m) | Full Spectrum (Ra 95+) — ErP Energy Class |
|---|---|---|---|---|---|---|---|---|---|
| 1800 K | — | — | — | 80.2 lm/W | 481.1 lm/m | G | — | — | — |
| 2300 K | — | — | — | 89.3 lm/W | 535.8 lm/m | F | — | — | — |
| 2700 K | — | — | — | 96.6 lm/W | 579.7 lm/m | F | 78.4 lm/W | 470.3 lm/m | G |
| 3000 K | — | — | — | 101.7 lm/W | 610.2 lm/m | F | 82.7 lm/W | 496.3 lm/m | G |
| 3500 K | — | — | — | 103.5 lm/W | 621.1 lm/m | F | 85.2 lm/W | 511 lm/m | F |
| 4000 K | — | — | — | 106.1 lm/W | 636.3 lm/m | F | 87.5 lm/W | 525 lm/m | F |
| 5000 K | — | — | — | 105.9 lm/W | 635.7 lm/m | F | — | — | — |
| 6500 K | — | — | — | 101.7 lm/W | 610.2 lm/m | F | — | — | — |
Grade DL (2nd Tier) · 12W/m
| CCT (K) | Ra 80 — Luminous Efficacy (lm/W) | Ra 80 — Luminous Flux (lm/m) | Ra 80 — ErP Energy Class | Ra 90 — Luminous Efficacy (lm/W) | Ra 90 — Luminous Flux (lm/m) | Ra 90 — ErP Energy Class | Full Spectrum (Ra 95+) — Luminous Efficacy (lm/W) | Full Spectrum (Ra 95+) — Luminous Flux (lm/m) | Full Spectrum (Ra 95+) — ErP Energy Class |
|---|---|---|---|---|---|---|---|---|---|
| 1800 K | — | — | — | 76.9 lm/W | 922.4 lm/m | G | — | — | — |
| 2300 K | — | — | — | 85.6 lm/W | 1027.4 lm/m | F | — | — | — |
| 2700 K | — | — | — | 92.6 lm/W | 1111.6 lm/m | F | 75.1 lm/W | 901.7 lm/m | G |
| 3000 K | — | — | — | 97.5 lm/W | 1170.1 lm/m | F | 79.3 lm/W | 951.7 lm/m | G |
| 3500 K | — | — | — | 99.2 lm/W | 1190.9 lm/m | F | 81.6 lm/W | 979.8 lm/m | G |
| 4000 K | — | — | — | 101.7 lm/W | 1220.1 lm/m | F | 83.9 lm/W | 1006.6 lm/m | G |
| 5000 K | — | — | — | 101.6 lm/W | 1218.9 lm/m | F | — | — | — |
| 6500 K | — | — | — | 97.5 lm/W | 1170.1 lm/m | F | — | — | — |
Grade DL (2nd Tier) · 14.4W/m
| CCT (K) | Ra 80 — Luminous Efficacy (lm/W) | Ra 80 — Luminous Flux (lm/m) | Ra 80 — ErP Energy Class | Ra 90 — Luminous Efficacy (lm/W) | Ra 90 — Luminous Flux (lm/m) | Ra 90 — ErP Energy Class | Full Spectrum (Ra 95+) — Luminous Efficacy (lm/W) | Full Spectrum (Ra 95+) — Luminous Flux (lm/m) | Full Spectrum (Ra 95+) — ErP Energy Class |
|---|---|---|---|---|---|---|---|---|---|
| 1800 K | — | — | — | 75.6 lm/W | 1088.4 lm/m | G | — | — | — |
| 2300 K | — | — | — | 84.2 lm/W | 1212.2 lm/m | G | — | — | — |
| 2700 K | — | — | — | 91.1 lm/W | 1311.6 lm/m | F | 73.9 lm/W | 1063.9 lm/m | G |
| 3000 K | — | — | — | 95.9 lm/W | 1380.7 lm/m | F | 78 lm/W | 1123 lm/m | G |
| 3500 K | — | — | — | 97.6 lm/W | 1405.1 lm/m | F | 80.3 lm/W | 1156.1 lm/m | G |
| 4000 K | — | — | — | 100 lm/W | 1439.7 lm/m | F | 82.5 lm/W | 1187.7 lm/m | G |
| 5000 K | — | — | — | 99.9 lm/W | 1438.3 lm/m | F | — | — | — |
| 6500 K | — | — | — | 95.9 lm/W | 1380.7 lm/m | F | — | — | — |
Grade DN (1st Tier) · 6W/m
| CCT (K) | Ra 80 — Luminous Efficacy (lm/W) | Ra 80 — Luminous Flux (lm/m) | Ra 80 — ErP Energy Class | Ra 90 — Luminous Efficacy (lm/W) | Ra 90 — Luminous Flux (lm/m) | Ra 90 — ErP Energy Class | Full Spectrum (Ra 95+) — Luminous Efficacy (lm/W) | Full Spectrum (Ra 95+) — Luminous Flux (lm/m) | Full Spectrum (Ra 95+) — ErP Energy Class |
|---|---|---|---|---|---|---|---|---|---|
| 1800 K | — | — | — | 94.7 lm/W | 568.2 lm/m | F | — | — | — |
| 2300 K | — | — | — | 105.7 lm/W | 634.4 lm/m | F | — | — | — |
| 2700 K | — | — | — | 114.3 lm/W | 686 lm/m | F | 92.7 lm/W | 556.2 lm/m | F |
| 3000 K | — | — | — | 120.8 lm/W | 724.8 lm/m | E | 98.2 lm/W | 589.2 lm/m | F |
| 3500 K | — | — | — | 123.4 lm/W | 740.7 lm/m | E | 101.6 lm/W | 609.6 lm/m | F |
| 4000 K | — | — | — | 124.1 lm/W | 744.5 lm/m | E | 102.4 lm/W | 614.7 lm/m | F |
| 5000 K | — | — | — | 124.9 lm/W | 749.6 lm/m | E | — | — | — |
| 6500 K | — | — | — | 119.4 lm/W | 716.5 lm/m | E | — | — | — |
Grade DN (1st Tier) · 12W/m
| CCT (K) | Ra 80 — Luminous Efficacy (lm/W) | Ra 80 — Luminous Flux (lm/m) | Ra 80 — ErP Energy Class | Ra 90 — Luminous Efficacy (lm/W) | Ra 90 — Luminous Flux (lm/m) | Ra 90 — ErP Energy Class | Full Spectrum (Ra 95+) — Luminous Efficacy (lm/W) | Full Spectrum (Ra 95+) — Luminous Flux (lm/m) | Full Spectrum (Ra 95+) — ErP Energy Class |
|---|---|---|---|---|---|---|---|---|---|
| 1800 K | — | — | — | 90.8 lm/W | 1089.6 lm/m | G | — | — | — |
| 2300 K | — | — | — | 101.4 lm/W | 1216.5 lm/m | F | — | — | — |
| 2700 K | — | — | — | 109.6 lm/W | 1315.3 lm/m | F | 88.9 lm/W | 1066.4 lm/m | G |
| 3000 K | — | — | — | 115.8 lm/W | 1389.7 lm/m | F | 94.2 lm/W | 1129.9 lm/m | F |
| 3500 K | — | — | — | 118.4 lm/W | 1420.2 lm/m | F | 97.4 lm/W | 1168.9 lm/m | F |
| 4000 K | — | — | — | 119 lm/W | 1427.6 lm/m | E | 98.2 lm/W | 1178.7 lm/m | F |
| 5000 K | — | — | — | 119.8 lm/W | 1437.3 lm/m | E | — | — | — |
| 6500 K | — | — | — | 114.5 lm/W | 1373.9 lm/m | F | — | — | — |
Grade DN (1st Tier) · 14.4W/m
| CCT (K) | Ra 80 — Luminous Efficacy (lm/W) | Ra 80 — Luminous Flux (lm/m) | Ra 80 — ErP Energy Class | Ra 90 — Luminous Efficacy (lm/W) | Ra 90 — Luminous Flux (lm/m) | Ra 90 — ErP Energy Class | Full Spectrum (Ra 95+) — Luminous Efficacy (lm/W) | Full Spectrum (Ra 95+) — Luminous Flux (lm/m) | Full Spectrum (Ra 95+) — ErP Energy Class |
|---|---|---|---|---|---|---|---|---|---|
| 1800 K | — | — | — | 89.3 lm/W | 1285.6 lm/m | G | — | — | — |
| 2300 K | — | — | — | 99.7 lm/W | 1435.4 lm/m | F | — | — | — |
| 2700 K | — | — | — | 107.8 lm/W | 1552 lm/m | F | 87.4 lm/W | 1258.3 lm/m | G |
| 3000 K | — | — | — | 113.9 lm/W | 1639.8 lm/m | F | 92.6 lm/W | 1333.2 lm/m | F |
| 3500 K | — | — | — | 116.4 lm/W | 1675.8 lm/m | F | 95.8 lm/W | 1379.2 lm/m | F |
| 4000 K | — | — | — | 117 lm/W | 1684.4 lm/m | F | 96.6 lm/W | 1390.7 lm/m | F |
| 5000 K | — | — | — | 117.8 lm/W | 1696 lm/m | F | — | — | — |
| 6500 K | — | — | — | 112.6 lm/W | 1621.1 lm/m | F | — | — | — |
Related models in this series
- SOB Flexible Linear Light (#16614)
- Green light Flexible LED Strip Light (#8215-G)
- Ultra Narrow SOB LED Strip Light (#16416)
- Ice Blue Flexible LED Strip Light (#8215-IB)
- High Efficiency SOB LED Strip Light (#16791)
- Single-Color SOB LED Strip Light (#11236)
- SOB High Density LED Strip Light (#17000)
- SOB High Density LED Strip Light (#16662)
See every model in SOB LED Strip Series or narrow to Sob Classic. Compare wattage, lumen output and run length in the ProCalc parameter library, or request OEM/ODM pricing on the custom manufacturing page.
Frequently Asked Questions
What are the key advantages of the SOB technology in this LED strip?
SOB (System-on-Board) technology offers a dot-free appearance, high LED density, and enhanced flexibility for seamless integration into various designs. It provides uniform illumination without hot spots.
Is this 5mm LED strip dimmable and what power supply is required?
Yes, the 13921 5mm SOB LED strip is fully dimmable. It requires a Constant Voltage (CV), 24V DC power supply, compatible with most standard LED dimming systems.
What certifications does this LED strip hold for B2B applications?
This LED strip has LM-80 approval, ensuring its long-term reliability and color consistency, which is crucial for professional B2B installations and projects.
Can this ultra-narrow LED strip be customized for specific project lengths?
Yes, the strip is cuttable every 7 LEDs (20mm), allowing for precise length customization to fit specific project requirements. Contact DENO for custom length inquiries.
Is this SOB strip light also called FOB, S-COB or COB Pro strip light?
Yes. Model 13921 belongs to the DENO SOB (Spot on Board) family, which the market also calls FOB strip light, S-COB strip light or COB Pro strip light. All three names describe the same dot-free chip-on-board LED strip construction, so you can quote it under whichever term your project specification uses.
Why choose this S-COB strip light over a standard COB LED strip?
Compared with conventional COB LED strip, DENO SOB / FOB strip light supports higher power up to 24W/m instead of roughly 12W/m, CRI 95 and full-spectrum options, SDCM <=3 colour consistency, and single-end power feed at 5m, 10m and 15m without visible head-to-tail brightness loss, with higher luminous efficacy and lumen output.
Classic COB LED Strip Light (SOB) — Buyer Questions
What is a classic COB LED strip used for at 12W/m?
The classic dotless LED strip 24V line covers general architectural work: cove, shelf, joinery and corridor lighting between roughly 3.6W/m and 15W/m. 256 to 544 LEDs/m on an 8 mm or 10 mm board gives uniform light with no spots at any viewing angle, which is why it is the default choice for aluminium channel and profile installs.
- Series Classic SOB dot-free strips
- Related series COB LED strip for aluminium channel
- Related series compare with the classic COB range
- Product 11236 classic dotless board
How high can the LED density go on a high density COB LED strip 24V?
DENO ships classic SOB boards at 256, 320, 384, 420, 544 and 736 LEDs/m. Above roughly 500 LEDs/m the line is fully homogeneous at 10 mm from a lens, and the 736 LEDs/m build is used where the strip sits behind a shallow reveal and the eye can see the source directly.
- Series Classic SOB dot-free strips
- Related series high density LED strip options
- Guide compare density against lumen output
- Product 16416 high density dotless board
Which reel lengths ship — 5m or 10m rolls of dotless LED strip?
Standard reels are 5 m for constant-voltage classic boards and up to 15 m for the constant-current versions. Custom cut lengths per reel are available on OEM orders so an installer can pull one continuous run per bay instead of joining offcuts.
- Series Classic SOB dot-free strips
- Guide custom reel lengths for wholesale orders
- Related series longer single-feed reels
- Product 16662 standard reel build
Is there an IP67 version of the classic dot-free strip?
Yes. The 11236-IP67, 14158-IP67 and 14159-IP67 builds keep the same dot-free surface under a moulded coating for damp bathrooms, kitchens and covered outdoor lines. The coating adds a millimetre of thickness and slightly reduces the minimum bend radius, so allow for it inside narrow profiles.
- Series Classic SOB dot-free strips
- Related series special IP-rated dot-free builds
- Guide ask DENO which IP rating your site needs
Do you sell general lighting COB LED strip wholesale?
Yes — the classic range is the volume line for distributors and fixture makers. MOQ, private-label printing on the reel, custom cut units and branded packaging are all available, with CE/RoHS documentation and a 5-year warranty on every wholesale order.
SOB is the upgraded generation of the COB LED strip
Every SOB board on this page starts from the classic COB recipe — one continuous phosphor line, zero visible dots — and rebuilds it on flip-chip dies and thick copper. The result keeps the COB look but runs to 24W/m, holds CRI 95 and stays within SDCM ≤3 over the full reel. If your project is comfortable at 4–12W/m, the classic COB range remains the economical choice; if you need double the output or a 15 m single-feed run, you are already on the right page.