SM30T21AY is out of stock and can be placed on backorder.
Available Substitutes:

Image shown is a representation only. Exact specifications should be obtained from the product data sheet.
SM30T21AY | |
|---|---|
DigiKey Part Number | 497-12177-2-ND - Tape & Reel (TR) 497-12177-1-ND - Cut Tape (CT) 497-12177-6-ND - Digi-Reel® |
Manufacturer | |
Manufacturer Part Number | SM30T21AY |
Description | TVS DIODE 18VWM 29.2VC SMC |
Manufacturer Standard Lead Time | 21 Weeks |
Customer Reference | |
Detailed Description | 29.2V Clamp 102.7A Ipp Tvs Diode Surface Mount SMC |
Datasheet | Datasheet |
EDA/CAD Models | SM30T21AY Models |
Product Attributes
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Category | Current - Peak Pulse (10/1000µs) 102.7A |
Mfr | Power - Peak Pulse 3000W (3kW) |
Series | Power Line Protection No |
Packaging Tape & Reel (TR) Cut Tape (CT) Digi-Reel® | Operating Temperature -55°C ~ 175°C (TJ) |
Part Status Active | Grade Automotive |
Type Zener | Qualification AEC-Q101 |
Unidirectional Channels 1 | Mounting Type Surface Mount |
Voltage - Reverse Standoff (Typ) 18V | Package / Case DO-214AB, SMC |
Voltage - Breakdown (Min) 20V | Supplier Device Package |
Voltage - Clamping (Max) @ Ipp 29.2V | Base Product Number |
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Additional Resources
Substitutes (4)
| Part Number | Manufacturer | Quantity Available | DigiKey Part Number | Unit Price | Substitute Type |
|---|---|---|---|---|---|
| SMLJ18A-R | Bourns Inc. | 0 | 118-SMLJ18A-RTR-ND | $0.41606 | Similar |
| SMDJ18AH | Eaton - Electronics Division | 2,456 | 283-SMDJ18AHTR-ND | $1.44000 | Similar |
| SMDJ17CAH | Eaton - Electronics Division | 0 | 283-SMDJ17CAHTR-ND | $0.55440 | Similar |
| SMDJ18CAH | Eaton - Electronics Division | 0 | 283-SMDJ18CAHTR-ND | $0.38625 | Similar |
In-Stock: 0
2,500 estimated in stock on 15-Mar-2027
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Quantity
All prices are in USD
Cut Tape (CT) & Digi-Reel®
| Quantity | Unit Price | Ext Price |
|---|---|---|
| 1 | $1.35000 | $1.35 |
| 10 | $1.10600 | $11.06 |
| 100 | $0.86030 | $86.03 |
| 500 | $0.72918 | $364.59 |
| 1,000 | $0.59400 | $594.00 |
Tape & Reel (TR)
| Quantity | Unit Price | Ext Price |
|---|---|---|
| 2,500 | $0.47828 | $1,195.70 |
| 5,000 | $0.44479 | $2,223.95 |
| 7,500 | $0.43136 | $3,235.20 |
Tariff Status: Tariff may apply if shipping to the United States. Estimated tariff costs will be calculated and displayed in the shopping cart to help you assess potential expenses.



