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| Part Number | EJ-23021-000 | EJ-26775-000 | EJ-23080-000 | EJ-23018-000 | EJ-23026-000 |
| Manufacturer | Knowles | Knowles | Knowles | Knowles | Knowles |
| Series | EJ | EJ | EJ | EJ | EJ |
| Packaging | Bulk | Bulk | Tray | Bulk | Bulk |
| Product Status | Obsolete | Active | Obsolete | Active | Active |
| Technology | Magnetic | Magnetic | Magnetic | Magnetic | Magnetic |
| Type | General Purpose | General Purpose | Receiver | Receiver | Receiver |
| Frequency Range | 200 Hz ~ 7 kHz | 200 Hz ~ 4.8 kHz | 200 Hz ~ 4.6 kHz | 200 Hz ~ 4.5 kHz | 200 Hz ~ 4.5 kHz |
| Frequency - Self Resonant | - | - | - | - | - |
| Impedance | 750 Ohms | 36 Ohms | 380 Ohms | 380 Ohms | 362 Ohms |
| Efficiency - dBA | 110.00 | - | 113.00 | 113.00 | 114.50 |
| Efficiency - Testing | - | - | - | - | - |
| Efficiency - Type | - | - | Sensitivity | Sensitivity | Sensitivity |
| Power - Rated | - | - | - | - | - |
| Power - Max | - | - | - | - | - |
| Port Location | Side | - | Top | Top | Top |
| Shape | Rectangular | Rectangular | Rectangular | Rectangular | Rectangular |
| Material - Cone | - | - | - | - | - |
| Material - Magnet | - | - | - | - | - |
| Ingress Protection | - | - | - | - | - |
| Ratings | - | - | - | - | - |
| Termination | Solder Pads | Solder Pads | Solder Pads | Solder Pads | Solder Pads |
| Size / Dimension | 0.248" L x 0.169" W (6.30mm x 4.29mm) | 0.248" L x 0.169" W (6.30mm x 4.29mm) | 0.248" L x 0.169" W (6.30mm x 4.29mm) | 0.248" L x 0.169" W (6.30mm x 4.29mm) | 0.248" L x 0.169" W (6.30mm x 4.29mm) |
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