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| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
170,000 pcs
|
170000 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
| Category | |
| Manufacturer Name | |
| AEC Qualified | |
| Applications | |
| Automotive Grade | |
| Bidirectional Channels | |
| Current | |
| Mounting Type | |
| Operating Temperature | |
| Power | |
| Power Line Protection | |
| Supplier Device Package | |
| Tape & Reel | |
| Type | |
| Voltage | |
| Voltage - Breakdown (Min) | |
| Voltage - Reverse Standoff (Typ) |
The SM4T33CAY is a bidirectional Zener TVS diode from STMicroelectronics designed for automotive applications. It provides transient voltage protection with a reverse standoff voltage of 28V and a maximum clamping voltage of 59V at a peak pulse current of 39A (8/20µs waveform). The device can handle 400W of peak pulse power.
This TVS diode is housed in a compact DO-214AC (SMA) surface-mount package, making it suitable for space-constrained automotive electronic modules. It operates over a wide temperature range of -55°C to 150°C (junction). The part is RoHS3 compliant and REACH unaffected, though these compliance claims are unverified.
Typical applications include protecting sensitive automotive electronics from voltage transients induced by load dump, inductive load switching, and electrostatic discharge (ESD). The bidirectional configuration allows protection of signal lines that swing both positive and negative relative to ground.
| Qty | Low | High |
|---|---|---|
| 1+ | $1.53 | $1.53 |
| 10+ | $0.96 | $0.96 |
| 100+ | $0.64 | $0.64 |
| 500+ | $0.54 | $0.54 |
| 1,000+ | $0.45 | $0.45 |
| 2,500+ | $0.45 | $0.45 |
| 5,000+ | $0.37 | $0.37 |
| 10,000+ | $0.36 | $0.36 |
| 25,000+ | $0.35 | $0.35 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The reverse standoff voltage (typical) is 28V.
The maximum clamping voltage is 59V at a peak pulse current of 39A (8/20µs).
It is available in a DO-214AC (SMA) surface-mount package.
The peak pulse power rating is 400W.
Yes, it is specifically designed for automotive applications.
The operating junction temperature range is -55°C to 150°C.