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| PartNumber | FED-27235-I04 | FED-27304-I06 | FED-27288-I06 |
| Description | Speakers & Transducers Balanced Armature Speaker | Speakers & Transducers Balanced Armature Speaker | Speakers & Transducers Balanced Armature Speake |
| Manufacturer | Knowles | Knowles | Knowles |
| Product Category | Speakers & Transducers | Speakers & Transducers | Speakers |
| RoHS | Y | Y | - |
| Product | Receivers | - | - |
| Type | Balanced Armature | - | Receiver, Magnetic, Balanced Armature |
| IP Rating | - | - | - |
| Packaging | Bulk | - | - |
| Series | ED/FED | ED/FED | FED |
| Brand | Knowles | Knowles | - |
| Product Type | Speakers & Transducers | Speakers & Transducers | - |
| Factory Pack Quantity | 1 | 25 | - |
| Subcategory | Audio Devices | Audio Devices | - |
| Termination Style | - | - | Solder Pad |
| Height | - | - | 2.97mm |
| Length | - | - | 6.3 mm |
| Width | - | - | 4.29 mm |
| Frequency | - | - | 4 kHz |
| Impedance | - | - | 100 Ohm |
| Termination | - | - | Solder Pads |
| Sound Pressure Level | - | - | 102.5dB |
| Size Dimension | - | - | 6.30mm L x 4.29mm W |
| Frequency Range | - | - | 200Hz ~ 4kHz |
| Shape | - | - | Rectangular |
| Power Rated | - | - | - |
| Power Max | - | - | - |
| PortLocation | - | - | Side |
| Material Cone | - | - | - |
| Material Magnet | - | - | Ferrite |
| Depth | - | - | 2.97 mm |
| Dimensions | - | - | 6.3 mm L x 4.29 mm W |
| Length in | - | - | 0.248 in |
| Length mm | - | - | 6.3 mm |
| Width in | - | - | 0.169 in |
| Width mm | - | - | 4.29 mm |