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| Part Number | SMTB-0927-TW-R | SMTB-1240-S-R | SMTB-0940-T-3V-R | SMTB-0827-TW-R |
| Manufacturer | PUI Audio, Inc. | PUI Audio, Inc. | PUI Audio, Inc. | PUI Audio, Inc. |
| Series | SMTB | SMTB | SMTB | SMTB |
| Packaging | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) |
| Product Status | Active | Active | Active | Active |
| Driver Circuitry | Transducer, Externally Driven | Transducer, Externally Driven | Transducer, Externally Driven | Transducer, Externally Driven |
| Input Type | Zero-Peak Signal | Peak-Peak Signal | Peak-Peak Signal | Zero-Peak Signal |
| Voltage - Rated | 3 V | 3 V | 3 V | 3.5 V |
| Voltage Range | 2 ~ 5V | 1 ~ 25V | 1 ~ 25V | 2.5 ~ 4.5V |
| Frequency | 2.7kHz | 4kHz | 4kHz | 2.7kHz |
| Technology | Electromechanical/Magnetic | Piezo | Piezo | Electromechanical/Magnetic |
| Operating Mode | - | - | - | - |
| Duration | - | - | - | - |
| Sound Pressure Level (SPL) | 95dB @ 3V, 10cm | 75dB @ 3V, 10cm | 65dB @ 3V, 10cm | 85dB @ 3.5V, 10cm |
| Current - Supply | 80mA | 3mA | 3mA | 100mA |
| Port Location | Top | Side | Top | Top |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 105°C |
| Approval Agency | - | - | - | - |
| Ratings | Washable | - | - | Washable |
| Ingress Protection | - | - | - | - |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Termination | Solder Pads | Solder Pads | Solder Pads | Solder Pads |
| Size / Dimension | 0.362" Dia (9.20mm) | 0.472" L x 0.472" W (12.00mm x 12.00mm) | 0.354" L x 0.354" W (9.00mm x 9.00mm) | 0.335" L x 0.335" W (8.50mm x 8.50mm) |
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