SM15T10AY - 1500W TVS Diode, 10V Standoff | STMicroelectronics
料号： SM15T10AY ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 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 |
SM15T10AY 概述
A TVS diode is a clamping device that, when exposed to a transient voltage exceeding its breakdown voltage, conducts high current to clamp the voltage to a safe level, thereby protecting downstream components. TVS diodes are essential in power supply inputs, communication lines, and automotive electronics where transient surges are common. They are part of the broader category of circuit protection devices, which also includes varistors, gas discharge tubes, and ESD suppressors.
Key features of the SM15T10AY include a peak pulse power dissipation of 1500W (10/1000us waveform), a maximum clamping voltage of 18.6V at 83A peak pulse current, and a low leakage current of 200uA at the standoff voltage. The device operates over a junction temperature range of -55C to +150C, making it suitable for harsh environments. It is RoHS compliant and halogen-free, meeting modern environmental standards.
The SM15T10AY utilizes a silicon avalanche diode structure, providing fast response times (typically less than 1ns) and high surge capability. The SMC package offers excellent thermal performance, with a thermal resistance of 15C/W (junction to lead), enabling efficient heat dissipation during surge events. The device is AEC-Q101 qualified, making it suitable for automotive applications where reliability under extreme conditions is critical.
Typical applications include automotive electronic control units (ECUs), industrial power supplies, telecom equipment, and consumer electronics. In automotive systems, the SM15T10AY protects sensitive microcontrollers and sensors from load-dump transients and ESD. In industrial power supplies, it safeguards rectifier circuits and DC-DC converters from lightning-induced surges.
When designing with the SM15T10AY, ensure adequate PCB copper area for heat dissipation during surge events. The device should be placed as close as possible to the protected component or connector to minimize parasitic inductance. For high-reliability designs, consider derating the peak pulse power at elevated ambient temperatures.
直接替换替代料： SM15T10AY ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
SM15T10A
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
SM15T10AY-AQ
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
SMCJ10A
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
1.5SMC10A
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
SMDJ10A
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
SM15T10AY 最大额定值与电气特性
| 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 |
| 工作结温 | -55C to +150C |
| 封装 | SMC (DO-214AB) |
| 安装类型 | Surface Mount |
| AEC-Q101 | Qualified |
| RoHS 状态 | Compliant |
| 无卤 | Yes |
SM15T10AY 引脚配置
| 引脚 1 | Cathode — Cathode terminal, marked with polarity band |
| 引脚 2 | Anode — Anode terminal |
典型应用
SM15T10AY 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： SM15T10AY ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- AEC-Q101 qualified for automotive reliability （对比 SMCJ10A)
- Same-brand variants available for design flexibility （对比 SM15T10A)
- 1500W peak pulse power with 10V standoff （对比 SMDJ10A)
设计说明
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.
合规信息
AEC-Q101 qualified per STMicroelectronics datasheet. RoHS and halogen-free compliant.
