| PartNumber | 1SMA4739HR3 | 1SMA4739HR2G | 1SMA4739HR2 |
| Description | Zener Diodes 1W, 9.1V, 5% ZENER DIODE, SMA | Zener Diodes 1W, 9.1V, 5% ZENER DIODE, SMA | Zener Diodes 1W, 9.1V, 5% ZENER DIODE, SMA |
| Manufacturer | Taiwan Semiconductor | Taiwan Semiconductor | Taiwan Semiconductor |
| Product Category | Zener Diodes | Zener Diodes | Zener Diodes |
| RoHS | Y | Y | Y |
| Voltage Tolerance | 5 % | 5 % | 5 % |
| Qualification | AEC-Q101 | AEC-Q101 | AEC-Q101 |
| Packaging | Reel | Reel | Reel |
| Series | 1SMA | 1SMA | 1SMA |
| Brand | Taiwan Semiconductor | Taiwan Semiconductor | Taiwan Semiconductor |
| Product Type | Zener Diodes | Zener Diodes | Zener Diodes |
| Factory Pack Quantity | 1800 | 7500 | 7500 |
| Subcategory | Diodes & Rectifiers | Diodes & Rectifiers | Diodes & Rectifiers |