- ONLYLED
- CHINA
- 1000pcs /month
- 1000pcs
H-PH1.25-COB-A 1.25mm Chip-on-Board COB LED cabinet: 600337.5mm 16:9, 640,000 px/m², front service, 120–220VAC. Factory-direct ultra-fine pitch indoor LED video wall from ONLY LED.
Product details
P1.25 COB Cabinet
H-PH1.25-COB-A
A 600 × 337.5 mm (16:9) die-cast aluminium Chip-on-Board (COB) LED display panel engineered for seamless ultra-fine pitch indoor LED video walls — 1.25 mm pixel pitch, 640,000 pixels per m², 4H surface hardness and true front service.
Engineered for image quality and uptime
Chip-on-Board construction moves beyond conventional SMD — stronger, cooler and clearer at fine pitch. A factory-built choice for demanding indoor LED video wall projects.
Flip-chip COB process
Inverted flip-chip packaging mounts the die directly on the board — tighter pitch, better heat path and a uniformly dark, seamless face.
4H surface hardness
Epoxy-resin encapsulation shields every pixel against scratches, dust and impact — built for spaces where a panel has to take contact.
Three-in-one board
Power supply, receiving card and adapter board integrated into one module — fewer failure points, simpler cable routing and faster assembly.
Full front service
Every module is replaceable from the front with no tools — maintenance from the display side, ideal for flush and wall-mounted builds.
160° viewing angle
Consistent brightness and colour from nearly any seat — wide 160° horizontal and vertical viewing keeps content legible in any room.
Universal power input
Built-in 120–220 VAC switch-mode supply accepts a wide input range — one SKU works across North American and global installs.
Why Chip-on-Board beats SMD at fine pitch
COB (Chip-on-Board) LED display technology mounts LED chips directly onto the PCB with flip-chip encapsulation — the modern choice for ultra-fine pitch indoor LED walls versus traditional SMD LED display panels.
| Feature | ONLY LED P1.25 COB Series | Standard SMD Display |
|---|---|---|
| Encapsulation | Flip-chip COB — chips bonded directly to the boardWin | SMD — bracket & wire packaging |
| Surface protection | 4H resin-encapsulated surface, anti-scratch and impact resistantWin | Fragile exposed LED beads |
| Pixel pitch range | Fine pitch: 1.25 mm (0.049 in) | Typically coarser spacing |
| Viewing angle | 160° horizontal / verticalWin | 140° – 160° |
| Contrast ratio | 10,000 : 1 deep blacksWin | 3,000 : 1 – 5,000 : 1 |
| Heat dissipation | Direct chip-to-board heat pathWin | Heat passes through bracket and wire |
| Seam appearance | Uniform dark matte face, nearly invisible seamsWin | Visible pixel dots at close range |
| Maintenance | Full front service, tool-free module replacement | Front or rear service per design |
Built close-up
Die-cast aluminium structure, machined mounting points and clean cabling — the details that keep a video wall square for years.
Full specification sheet
Metric and imperial values listed side by side for easy reference on North American projects.
| Model Number | H-PH1.25-COB-A |
| Product Series | H Series Indoor COB LED Display Cabinet (600 × 337.5 mm, 16:9 aspect ratio) |
| LED Type | Chip-on-Board (COB) LED — inverted / flip-chip process, resin-encapsulated |
| Cabinet Size (W × H × D) | 600 × 337.5 × 39.5 mm (23.6 × 13.3 × 1.6 in) |
| Module Size (W × H) | 150 × 168.75 mm (5.9 × 6.6 in) |
| Cabinet Weight | 4 kg / panel (8.8 lb) |
| Cabinet Material | Die-cast aluminium cabinet |
| Surface Hardness | 4H — COB epoxy resin encapsulation |
| Cabinet Resolution | 480 × 270 pixels |
| Module Resolution | 120 × 135 pixels |
| Pixel Pitch | 1.25 mm (0.049 in) |
| Pixel Density | 640,000 pixels/m² (59,458 pixels/ft²) |
| LED Surface Colour | Matte frosted |
| Brightness | ≥ 600 cd/m² — adjustable |
| Viewing Angle (H / V) | 160° / 160° |
| Contrast Ratio | 10,000 : 1 |
| Gray Scale Level | 16–22 bit |
| Refresh Rate | ≥ 3,840 Hz |
| Frame Rate | 50–60 Hz |
| Brightness Adjustment | Manual RGB, 256 levels per colour; automatic 8-grade adjustment |
| Flash Correction | Yes |
| Pixel Correction | Module calibration storage + receiving card calibration storage |
| Operating Voltage | 120–220 VAC — universal input |
| Average Power | 120 W/m² — ≈ 24 W/cabinet |
| Maximum Power | 320 W/m² — ≈ 65 W/cabinet |
| Power Backup | Dual power backup (optional) |
| Signal Backup | Dual signal backup (optional) |
| IP Rating | IP54 — module surface protection |
| Working Environment | Indoor |
| Operating Temperature | −10 °C to +40 °C (14 °F to 104 °F) |
| Operating Humidity | 10% RH – 90% RH |
| Screen Temperature Rise | ≤ 20 °C (68 °F) |
| Effective Viewing Distance | ≤ 0.5 m (1.6 ft) |
| LED Lifetime | ≥ 100,000 hrs |
| MTBF | ≥ 10,000 hrs |
| Malfunction Rate | < 0.0001 |
| Cooling Method | Independent cooling + COB craft cooling |
| Control System | Colorlight & NovaStar (synchronous) |
| Control Method | Synchronous / asynchronous control |
| Control Distance | CAT5 twisted-pair cable; fibre-optic transmission required above 70 m |
| Installation Method | Wall mounting / bracket mounting / embedded installation |
| Maintenance Method | Full front maintenance — tool-free module replacement |
One cabinet, many builds
The 600 × 337.5 mm 16:9 ultra-fine pitch COB LED display format mixes vertically and horizontally, so a control room, boardroom, retail wall or broadcast studio can be sized to the millimetre.
Control & command
High pixel density puts dashboards, maps and live feeds in crisp focus at close viewing distances.
Boardroom & huddle
Seamless, near-flush walls that feel like a single surface — no visible seams at close range.
Lobby & retail
Brand content with depth — 10,000:1 contrast and a dark matte face give premium imagery presence.
Broadcast & studio
3,840 Hz refresh and 16–22 bit grayscale keep cameras free of banding and flicker on air.
A factory partner, not just a supplier
Two decades of LED display manufacturing from our Shenzhen facility.
Private label, custom firmware and build-to-spec programs for integrators.
Compliant to EU and North American electrical and EMC standards.
Structural warranty on the cabinet, backed by direct factory support.
P1.25 COB LED video wall — FAQs
COB (Chip-on-Board) is a LED display technology where LED chips are mounted directly onto the PCB and encapsulated with epoxy resin, rather than packaged individually like SMD. It delivers tighter pixel pitch, a harder protective surface, better heat dissipation and a seamless dark display face — ideal for ultra-fine pitch indoor LED video walls.
The H-PH1.25-COB-A uses a 1.25mm (0.049in) pixel pitch with 640,000 pixels per square metre (59,458 pixels per square foot), making it a fine pitch indoor LED display suitable for close viewing distances.
Yes. The cabinet supports full front maintenance with tool-free module replacement, so modules can be serviced from the display side — ideal for flush and wall-mounted video wall installations.
The panel features a universal 120–220VAC switch-mode power supply, so a single SKU works across North American (120V) and international installations.
Yes. The 600×337.5mm cabinets mix vertically and horizontally, enabling 4K and 8K ultra-clear video walls with flexible sizing that reduces installation cost while accommodating diverse dimensions.
Yes. As a factory established in 2006, ONLY LED offers OEM/ODM and private label programs for integrators and LED display suppliers, with CE, FCC and RoHS compliance and a 5-year warranty.
Ready to spec your indoor LED video wall?
Tell us your wall size and pixel requirement — our engineers will respond within one business day with a quote and layout drawing for your COB LED display project.
