38 × 38 × 20 mm DC Axial Fan
| Series | BDC3820P |
| Product Type | DC Axial Fan |
| Dimensions | 38 × 38 × 20 mm (1.5 × 1.5 × 0.8 in) |
| Rated Voltage | 12 / 24 VDC |
| Voltage Range | 7~13.2 / 14~26.4 VDC |
| Motor Type | Brushless DC motor, option(auto cutoff/auto restart) |
| Burnout Protection | Electronically protected, polarity protected |
| IP Protection | IP55 / IP67 |
| Frame Material | Glass fiber reinforced thermoplastic, rated UL94V-0 |
| Impeller | Glass fiber reinforced plastic, rated UL94V-0 |
| Bearing | Ball bearing |
| Rotation | CCW when viewed from rotor |
| Connection | Lead wires or Terminals |
| Weight | 44g (0.097Lbs) |
| Dielectric Strength | 500VAC/min. Max leakage 0.5mA |
| Speed Control | Option : PWM, SC & SV... |
| Signal Output | Option : FG, RD... |
| Operating Temp. | –20°C to +65°C |
| Storage Temp. | –20°C to +75°C (at 65%RH) |
| Life Expectancy | L10 (B:70K hours at 40°C / Y:50K hours at 40°C) |

Dimensions in mm (inches). Tolerances as marked.

Static pressure vs. airflow per speed variant. Manufacturer test data, tolerance ±10%.
| Model Number | Rated Voltage | Voltage Range | Input Power (W) | Current (A) | Speed (RPM) | Air Volume (m³/min) | Air Volume (CFM) | Max SP (mm H₂O) | Max SP (in H₂O) | Noise (dBA) | PQ Curve | UL |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BDC3820P-12SHH** | 12 VDC | 7~13.2 | 4.2 | 0.35 | 13000 | 0.4 | 14 | 19.05 | 0.75 | 52 | 1 | ✓ |
| BDC3820P-12SH** | 12 VDC | 7~13.2 | 3.12 | 0.26 | 10000 | 0.3 | 10.6 | 14.73 | 0.58 | 43 | 2 | ✓ |
| BDC3820P-12HHH** | 12 VDC | 7~13.2 | 2.16 | 0.18 | 9300 | 0.3 | 9 | 10.67 | 0.42 | 42 | 3 | ✓ |
| BDC3820P-12HH** | 12 VDC | 7~13.2 | 1.92 | 0.16 | 8900 | 0.2 | 8.6 | 9.91 | 0.39 | 42 | 4 | ✓ |
| BDC3820P-12H** | 12 VDC | 7~13.2 | 1.56 | 0.13 | 8000 | 0.2 | 7.4 | 8.64 | 0.34 | 40 | 5 | ✓ |
| BDC3820P-12M** | 12 VDC | 7~13.2 | 1.2 | 0.1 | 6700 | 0.2 | 6.5 | 5.59 | 0.22 | 36 | 6 | ✓ |
| BDC3820P-12L** | 12 VDC | 7~13.2 | 0.84 | 0.07 | 5500 | 0.2 | 5.4 | 4.57 | 0.18 | 32 | 7 | ✓ |
| BDC3820P-24SHH** | 24 VDC | 14~26.4 | 4.32 | 0.18 | 13000 | 0.4 | 14 | 19.05 | 0.75 | 52 | 1 | – |
| BDC3820P-24SH** | 24 VDC | 14~26.4 | 3.12 | 0.13 | 10000 | 0.3 | 10.6 | 14.73 | 0.58 | 43 | 2 | – |
| BDC3820P-24HHH** | 24 VDC | 14~26.4 | 2.16 | 0.09 | 9300 | 0.3 | 9 | 10.67 | 0.42 | 42 | 3 | – |
| BDC3820P-24HH** | 24 VDC | 14~26.4 | 1.92 | 0.08 | 8900 | 0.2 | 8.6 | 9.91 | 0.39 | 42 | 4 | – |
| BDC3820P-24H** | 24 VDC | 14~26.4 | 1.68 | 0.07 | 8000 | 0.2 | 7.4 | 8.64 | 0.34 | 40 | 5 | – |
| BDC3820P-24M** | 24 VDC | 14~26.4 | 1.2 | 0.05 | 6700 | 0.2 | 6.5 | 5.59 | 0.22 | 36 | 6 | – |
** = "WB" for wire lead type Ball bearing, or "TB" for terminal type Ball bearing Speed RPM tolerance +-20% Berring Industrial reserves the right to change data and improve electrical & mechanical design without notice, data tolerance +-10%