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| Part Number | PHF-23854-000 | PHF-23851-000 | PHF-23852-000 | PHF-23853-000 | PHF-23858-000 |
| Manufacturer | Knowles | Knowles | Knowles | Knowles | Knowles |
| Series | PHF | PHF | PHF | PHF | PHF |
| Packaging | Tray | Tray | Tray | Tray | Tray |
| Product Status | Active | Active | Active | Active | Active |
| Technology | Magnetic | Magnetic | Magnetic | Magnetic | - |
| Type | Receiver, Balanced Armature | General Purpose | Receiver, Balanced Armature | Receiver, Balanced Armature | General Purpose |
| Frequency Range | 200 Hz ~ 6 kHz | 200 Hz ~ 6 kHz | 200 Hz ~ 6 kHz | 200 Hz ~ 6 kHz | - |
| Frequency - Self Resonant | - | - | - | - | - |
| Impedance | 155 Ohms | 56 Ohms | 77 Ohms | 95 Ohms | - |
| Efficiency - dBA | 110.00 | 110.00 | 110.00 | 110.00 | - |
| Efficiency - Testing | - | - | - | - | - |
| Efficiency - Type | Sound Pressure Level (SPL) | Sound Pressure Level (SPL) | Sound Pressure Level (SPL) | Sound Pressure Level (SPL) | - |
| Power - Rated | - | - | - | - | - |
| Power - Max | - | - | - | - | - |
| Port Location | Top | Top | Top | Top | - |
| Shape | Rectangular | Rectangular | Rectangular | Rectangular | - |
| Material - Cone | - | - | - | - | - |
| Material - Magnet | - | - | - | - | - |
| Ingress Protection | - | - | - | - | - |
| Ratings | - | - | - | - | - |
| Termination | Solder Pads | Solder Pads | Solder Pads | Solder Pads | - |
| Size / Dimension | 0.310" L x 0.220" W (7.87mm x 5.59mm) | 0.310" L x 0.220" W (7.87mm x 5.59mm) | 0.310" L x 0.220" W (7.87mm x 5.59mm) | 0.310" L x 0.220" W (7.87mm x 5.59mm) | - |
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