| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
25,000 pcs
|
25000 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
| Category | |
| Manufacturer Name | |
| AEC Qualified | |
| Applications | |
| Automotive Grade | |
| Current | |
| Mounting Type | |
| Operating Temperature | |
| Power | |
| Power Line Protection | |
| Supplier Device Package | |
| Tape & Reel | |
| Type | |
| Unidirectional Channels | |
| Voltage |
The SM4T18AY is a unidirectional Zener TVS diode designed for automotive applications. It provides transient voltage protection with a nominal clamping voltage of 32.5V and a peak pulse power dissipation of 400W (8/20µs waveform). The device can handle a peak pulse current of 71A under the same test condition.
This TVS diode is housed in a standard DO-214AC (SMA) surface-mount package, making it suitable for automated assembly processes. It operates over a junction temperature range of -55°C to 150°C, ensuring reliability in harsh automotive environments. The part is rated for a single unidirectional channel and does not include power line protection.
Designed specifically for automotive use, the SM4T18AY meets the rigorous reliability and performance standards required by the automotive industry. Its compact SMA footprint allows for space-efficient PCB layouts in electronic control units, sensors, and other vehicle electronics.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.91 | $0.91 |
| 10+ | $0.76 | $0.76 |
| 100+ | $0.47 | $0.47 |
| 500+ | $0.33 | $0.33 |
| 5,000+ | $0.33 | $0.33 |
| 25,000+ | $0.32 | $0.32 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The nominal clamping voltage is 32.5V.
The peak pulse power is 400W (8/20µs waveform).
It is available in a DO-214AC (SMA) surface-mount package.
Yes, it is specifically designed for automotive use.
The junction temperature range is -55°C to 150°C.