| Part Number | 1SMA18AT3G | 1SMA28AT3G |
|---|---|---|
| Manufacturer | onsemi | Littelfuse Inc. |
| Category | TVS - Diodes | TVS - Diodes |
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| Product Status | Active | Obsolete |
| Type | Zener | Zener |
| Unidirectional Channels | 1 | 1 |
| Bidirectional Channels | - | - |
| Voltage - Reverse Standoff (Typ) | 18V | 28V |
| Voltage - Breakdown (Min) | 20V | 31.1V |
| Voltage - Clamping (Max) @ Ipp | 29.2V | 45.4V |
| Current - Peak Pulse (10/1000µs) | 13.7A | 8.8A |
| Power - Peak Pulse | 400W | 400W |
| Power Line Protection | No | No |
| Applications | General Purpose | General Purpose |
| Capacitance @ Frequency | 645pF @ 1MHz | 430pF @ 1MHz |
| Operating Temperature | -65°C ~ 150°C (TJ) | -65°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 6-WDFN Exposed Pad | DO-214AC, SMA |
| Supplier Device Package | 6-TDFN-EP (3x3) | SMA |