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| PartNumber | SM280508-3 | SM280508-1 | SM280508-2 |
| Description | Speakers & Transducers High Temp Dynamic Speake | Speakers & Transducers Dynamic Speake | Speakers & Transducers Dynamic Speake |
| Manufacturer | DB Unlimited | DB Unlimited | DB Unlimited |
| Product Category | Speakers | Speakers | Speakers |
| Series | SM | SM | SM |
| Product | Speakers | Speakers | Speakers |
| Type | Dynamic | Dynamic | Dynamic |
| Packaging | Bulk | Bulk | Bulk |
| Termination Style | Solder Pad | - | - |
| Mounting | Flush Mount | Flush Mount | Flush Mount |
| Operating Temperature Range | - 20 C to + 80 C | - 30 C to + 60 C | - 20 C to + 60 C |
| Height | 4 mm | 5 mm | 5.6 mm |
| Frequency | 550 Hz | 500 Hz | 550 Hz |
| Impedance | 8 Ohms | 8 Ohms | 8 Ohms |
| Sound Pressure Level | 90 dBA | 97 dBA | 92 dBA |
| Shape | Round | Round | Round |
| Diameter | 28 mm | 28 mm | 28 mm |
| Power Rating | 500 mW | 500 mW | 1.5 W |
| Dimensions | 4 mm H | 5 mm H | 5.6 mm H |
| Height in | 0.157 in | 0.197 in | 0.22 in |
| Height mm | 4 mm | 5 mm | 5.6 mm |
| Cone Material | Polyethermide | Mylar | Mylar |