Model & package intelligence
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Brightking SMDJ28A/TR13 SMDJ28A
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Brightking SMDJ28A / TR13
- Type
- BRIGHTKING
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Brightking
- Electronic Component
- SMDJ28A/TR13
- Electronic Component
- 1
- Package
- SMC(DO-214AB)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.34g
- Electronic Component
- 1
- Electronic Component
- BM0263668559
- Voltage
- 45.4V
- Current(Ir)
- 2uA
- Voltage(VBR)
- 31.1V
- 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.
SMDJ28A/TR13 产品概述
SMDJ28A/TR13 是 Brightking（台湾君耀）推出的一款单向表面贴装型瞬态电压抑制器（TVS），封装为工业常用的 SMC（DO-214AB）。该元件针对电源线和信号线的浪涌、浪涌脉冲及雷击/开关瞬态提供快速、可靠的钳位保护，适合空间受限但要求高能量吸收能力的应用场景。
一、主要参数
- 类型：单向 TVS
- 反向截止电压 Vrwm：28 V（稳压工作电压）
- 击穿电压 VBR：31.1 V
- 钳位电压 Vcl：45.4 V
- 峰值脉冲电流 Ipp：66.1 A
- 峰值脉冲功率 Ppp：3 kW（厂家测试条件）
- 反向静态电流 Ir：2 μA
- 封装：SMC（DO-214AB）
- 品牌：Brightking（台湾君耀）
二、产品特性
- 低轮廓表面贴装封装，便于自动化贴装并节省电路板空间。
- 玻璃钝化结（glass passivated junction），提高结面稳定性和长期可靠性。
- 内置应力消除结构，提升在长时间温度循环与机械应力下的寿命。
- 低电感设计，有利于高速信号或瞬态响应速度的保持。
- 出色的钳位能力，在受脉冲能量冲击时能将过电压限制在安全范围内，保护下游器件。
三、典型应用场景
- 工业 24 V 电源轨保护（Vrwm=28 V 适配常见 24 V 系统的保护余量）。
- AC/DC 电源输入端防雷击和浪涌保护。
- I/O 接口保护，例如以太网端口、串口、U/I 总线等外部接口。
- 电机驱动、继电器驱动电路的电压尖峰抑制。
四、布局与安装建议
- 将 SMDJ28A 放置在靠近电源入口或被保护器件的近端，缩短导线/走铜长度以减少寄生电感。
- 为了更好的热散逸与脉冲能量承受能力，建议在封装下方或附近布置适当的散热铜箔与过孔。
- 使用与 SMC 封装相匹配的焊盘和回流焊工艺，遵循厂家推荐的回流温度曲线以保证焊点可靠性。
- 在多通道保护设计中，保持各通道独立的回流路径，避免共模干扰通过地回流影响其他电路。
五、可靠性与选型提示
- 选择单向器件用于直流偏置较明显的系统；如需在交流或双向瞬态下保护，请选用双向 TVS 器件。
- 当系统可能遭受高能雷击或长时间脉冲时，除了单个 TVS，建议配合慢熔断器、共模电感或气体放电管以实现分级保护。
- 注意与系统工作电压的匹配：Vrwm（28 V）应大于正常工作电压但留有合理的裕量，避免在常态下触发泄放。
- 参考厂家钳位曲线和测试条件（脉冲波形、能量等级），在实际应用中留有安全裕度并进行现场或样机测试验证。
总结：SMDJ28A/TR13 以其高能量吸收能力、低电感和可靠的封装工艺，适合工业电源与 I/O 接口的浪涌保护需求。合理的 PCB 布局和配套保护元件能显著提升整机的抗浪涌能力与长期可靠性。
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