SM15T10AY - 1500W TVS Diode, 10V Standoff | STMicroelectronics
MPN: SM15T10AY β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.45 | $0.45 |
| 10 | $0.38 | $3.80 |
| 100 | $0.3 | $30.00 |
| 500 | $0.25 | $125.00 |
| 1,000 | $0.2 | $200.00 |
Drop-in alternatives for SM15T10AY β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
SM15T10A
β Drop-Inπ Reference alternative (not in catalog)
SM15T10AY-AQ
β Drop-Inπ Reference alternative (not in catalog)
SMCJ10A
β Drop-Inπ Reference alternative (not in catalog)
1.5SMC10A
β Drop-Inπ Reference alternative (not in catalog)
SMDJ10A
β Drop-Inπ Reference alternative (not in catalog)
SM15T10AY Maximum Ratings & Electrical Characteristics
| Type | TVS Diode (Transient Voltage Suppressor) |
| Polarity | Unidirectional |
| Standoff Voltage (V_WM) | 10 V |
| Breakdown Voltage (V_BR) | 11.1 V to 12.3 V at 1 mA |
| Maximum Clamping Voltage (V_CL) | 18.6 V at 83 A |
| Peak Pulse Power (P_PPM) | 1500 W (10/1000 us) |
| Peak Pulse Current (I_PPM) | 83 A |
| Leakage Current (I_R) | 200 uA at 10 V |
| Capacitance | [DATA_NEEDED: Capacitance] |
| Operating Junction Temperature | -55C to +150C |
| Package | SMC (DO-214AB) |
| Mounting Type | Surface Mount |
| AEC-Q101 | Qualified |
| RoHS Status | Compliant |
| Halogen Free | Yes |
SM15T10AY Pin Configuration
| Pin 1 | Cathode β Cathode terminal, marked with polarity band |
| Pin 2 | Anode β Anode terminal |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
SM15T10AY is suitable for 6 applications: Automotive Electronic Control Units (ECUs), Industrial Power Supplies, Telecommunication Equipment, Consumer Electronics, Renewable Energy Systems, LED Lighting Systems.
Automotive Electronic Control Units (ECUs)
The SM15T10AY protects ECUs from load-dump transients and ESD. Its AEC-Q101 qualification ensures reliability in harsh automotive environments. In a typical ECU, the TVS diode is placed at the power input to clamp voltage spikes from the alternator or inductive loads. The 1500W peak pulse power handles severe transients, while the 10V standoff voltage is suitable for 12V automotive systems. The low leakage current minimizes standby power consumption, and the SMC package allows compact PCB layouts.
Recommended
Industrial Power Supplies
In industrial power supplies, the SM15T10AY protects rectifier circuits and DC-DC converters from lightning-induced surges. The 1500W peak pulse power rating ensures robust protection against high-energy transients. The device is placed at the AC/DC input stage, clamping overvoltages before they reach sensitive components. Its wide operating temperature range (-55C to +150C) suits industrial environments. The SMC package's thermal performance aids heat dissipation during surge events, ensuring long-term reliability.
Recommended
Telecommunication Equipment
The SM15T10AY is used in telecom equipment to protect communication lines from lightning and ESD. Its fast response time (less than 1ns) ensures minimal voltage overshoot. The device is placed at the line interface, clamping transients before they reach transceivers and signal processors. The 10V standoff voltage is compatible with common telecom voltage levels. The low leakage current reduces power loss in always-on equipment, and the SMC package is suitable for high-density line cards.
Recommended
Consumer Electronics
In consumer electronics, the SM15T10AY protects power inputs and data lines from ESD and surge events. Its compact SMC package is ideal for space-constrained designs. The device is used in power adapters, set-top boxes, and smart home devices. The 1500W peak pulse power provides robust protection against surges from AC mains. The RoHS and halogen-free compliance meets environmental regulations, making it suitable for global markets.
Recommended
Renewable Energy Systems
The SM15T10AY is used in solar inverters and wind turbine controllers to protect against lightning-induced surges. Its high peak pulse power (1500W) handles the high-energy transients common in outdoor installations. The device is placed at the DC input of the inverter, clamping overvoltages from solar panels. The AEC-Q101 qualification ensures reliability in outdoor environments with wide temperature fluctuations. The SMC package's thermal performance is critical for dissipating surge energy.
Recommended
LED Lighting Systems
In LED lighting systems, the SM15T10AY protects LED drivers from voltage transients caused by switching and lightning. The device is placed at the input of the LED driver, clamping overvoltages before they reach the driver IC. The 10V standoff voltage is suitable for low-voltage LED systems. The low leakage current minimizes power loss, improving energy efficiency. The SMC package is compatible with standard PCB assembly processes, making it easy to integrate into lighting fixtures.
Recommended
Recommended Products Summary
Engineering reference data for SM15T10AY β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | SM15T10A | SM15T10AY-AQ | SMCJ10A | 1.5SMC10A | SMDJ10A |
|---|---|---|---|---|---|---|
| Package | SMC (DO-214AB) | SMC (DO-214AB) - same | SMC (DO-214AB) - same | SMC (DO-214AB) - same | SMC (DO-214AB) - same | SMC (DO-214AB) - same |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | Littelfuse | Bourns | Littelfuse |
| Standoff Voltage | 10 V | 10 V | 10 V | 10 V | 10 V | 10 V |
| Breakdown Voltage | 11.1 V to 12.3 V | 11.1 V to 12.3 V | 11.1 V to 12.3 V | 11.1 V to 12.3 V | 11.1 V to 12.3 V | 11.1 V to 12.3 V |
| Maximum Clamping Voltage | 18.6 V at 83 A | 18.6 V at 83 A | 18.6 V at 83 A | 18.6 V at 83 A | 18.6 V at 83 A | 18.6 V at 83 A |
| Peak Pulse Power | 1500 W | 1500 W | 1500 W | 1500 W | 1500 W | 3000 W |
| AEC-Q101 | Qualified | Not qualified | Qualified | Not qualified | Not qualified | Not qualified |
| Leakage Current | 200 uA | 200 uA | 200 uA | 200 uA | 200 uA | 200 uA |
Key Differentiators
- AEC-Q101 qualified for automotive reliability (vs SMCJ10A)
- Same-brand variants available for design flexibility (vs SM15T10A)
- 1500W peak pulse power with 10V standoff (vs SMDJ10A)
Design Notes
Place the SM15T10AY as close as possible to the protected component or connector to minimize parasitic inductance. Use short, wide traces for the TVS diode connections to reduce voltage overshoot during transient events. Ensure adequate copper area for heat dissipation, especially for high-energy surges.
During a surge event, the SM15T10AY dissipates up to 1500W of peak pulse power. The SMC package has a thermal resistance of 15C/W (junction to lead). For repeated surges, ensure the PCB has sufficient copper area and thermal vias to conduct heat away. Derate the peak pulse power at elevated ambient temperatures according to the datasheet derating curve.
Do not exceed the maximum clamping voltage or peak pulse current ratings. Ensure the standoff voltage is higher than the maximum operating voltage of the protected line to avoid leakage current. For bidirectional protection, use two unidirectional TVS diodes in series or a bidirectional TVS. Verify the polarity orientation during assembly, as the cathode is marked with a band.
Compliance Information
AEC-Q101 qualified per STMicroelectronics datasheet. RoHS and halogen-free compliant.
