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BORN SMCJ24A
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BORN SMCJ24A
- Type
- BORN
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BORN
- Electronic Component
- SMCJ24A
- Electronic Component
- 1
- Package
- SMC(DO-214AB)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.379g
- Electronic Component
- 1
- Electronic Component
- BM0257674533
- Voltage
- 38.9V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 29.5V
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMCJ24A 产品概述
一、产品简介
SMCJ24A 是 BORN（伯恩半导体）出品的一款单向瞬态电压抑制（TVS）二极管，采用 SMC（DO-214AB）封装，专为保护直流电源线和敏感电子器件免受浪涌与瞬态过电压冲击设计。其反向截止电压（Vrwm）为 24V，适合 24V 工况下的浪涌保护应用。
二、主要电气参数
- 极性：单向（适用于直流保护，具有整流方向）
- 反向截止电压 Vrwm：24V
- 击穿电压 Vbr：29.5V（典型）
- 钳位电压 Vc（峰值钳位电压）：38.9V
- 峰值脉冲电流 Ipp：38.6A（基准波形 10/1000µs）
- 峰值脉冲功率 Ppp：1.5kW（基准波形 10/1000µs）
- 反向电流 Ir：1µA（在 Vrwm 条件下的漏电流）
这些参数表明该器件在遭遇短时大能量的冲击（例如负载断开、雷击感应、开关浪涌）时，能将线路电压限制在电路可承受范围内，同时具有较低的静态漏电。
三、封装与热机械特性
SMC（DO-214AB）为常见功率封装，便于大电流能量分散与 PCB 焊接。该封装利于散热但仍需注意布局：器件应尽量靠近受保护端口或输入端，焊盘加大并连接散热铜箔，以提高瞬态能量承受能力和可靠性。
四、典型应用场景
- 24V 工业电源与控制系统的输入端防护
- 汽车电子（C类非严苛车规场景、24V 区域保护）
- 电源适配器、逆变器和电机驱动的浪涌抑制
- 通信设备、电源管理模块和接口保护（如外部电源线、继电器驱动线）
五、使用注意事项与选型建议
- 匹配工作电压：选择 Vrwm 与系统稳态电压相符，通常 Vrwm 应略高于最大工作电压；SMCJ24A 的 24V 适用于标称 24V 系统。
- 钳位能力校验：确认钳位电压 38.9V 在被保护元件允许范围内，避免在浪涌情形下损伤下游器件。
- 脉冲能量考虑：Ppp=1.5kW、Ipp=38.6A（10/1000µs）为评估一次性冲击能力的基准，若预期更高能量或更长脉冲需选用更高能量等级或并联/级联方案。
- 单向器件适用于直流或有明确极性的线路；若需两向交流保护，应选双向 TVS。
- 布局与散热：靠近入口布置、短且宽的走线、适当散热铜箔和焊盘，有助于提高实测承受能力与可靠性。
六、总结
SMCJ24A 是一款面向 24V 直流系统的高能量单向 TVS 器件，具有低漏电、明确的击穿及钳位性能和良好的脉冲吸收能力，适合工业与车辆等需要局部浪涌保护的场合。正确的电气匹配和 PCB 设计能显著发挥其保护效果，延长系统寿命。
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