STMicroelectronics SM4T18AY TVS Diodes
18.5V Unidirectional TVS Diode, 400W, SMA, DO-214AC
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
SM4T18AY
Category
Base Model
Detailed Description
18.5V Unidirectional TVS Diode, 400W, SMA, DO-214AC
Package
DO-214AC, SMA
Lifecycle Status
Active
Datasheet
SM4T18AY Datasheet
Quick Jump:
Technical Specifications
STMicroelectronics SM4T18AY TVS Diodes technical specifications.
General
Series
SM4TY, TRANSIL™
Package / Case
DO-214AC, SMA
Mounting Type
Surface Mount
Operating Temperature
-55°C ~ 150°C (TJ)
Lifecycle Status
Active
Current Peak Pulse 10 1000 S
71A (8/20µs)
Power Peak Pulse
400W
Power Line Protection
No
Grade
Automotive
Type
Zener
Alternate Parts Comparison (SM4T18AY vs SM4T18CAY vs SM6T7V5CA vs SM15T39CA)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Series | SM4TY, TRANSIL™ | SM4TY, TRANSIL™ | SM6T, TRANSIL™ | SM15T, TRANSIL™ |
| Package / Case | DO-214AC, SMA | DO-214AC, SMA | DO-214AA, SMB | DO-214AB, SMC |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) |
| Lifecycle Status | Active | Active | Production | Active |
| Current Peak Pulse 10 1000 S | 71A (8/20µs) | 71A (8/20µs) | 53A | 143A (8/20µs) |
| Power Line Protection | No | No | No | No |
| Type | Zener | Zener | Zener | Zener |
| Voltage Clamping Max Ipp | 32.5V | 32.5V | 11.3V | 69.7V |
| Voltage Reverse Standoff Typ | 15V | 15V | 6.4V | 33.3V |
| Power Peak Pulse | 400W | 400W | -- | 1500W (1.5kW) |
| Voltage Breakdown Min | 16.7V | 16.7V | -- | 37.1V |
| Action |
More Parts in TVS Diodes
Browse additional parts from the same category, grouped by series, package type, and manufacturer. These are catalog suggestions — not verified pin-compatible alternates.