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Littelfuse SZP6SMB30AT3G
Configuration
1 options
Configuration
Electronic Component
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Littelfuse SZP6SMB30AT3G
- Type
- LITTELFUSE
- Minimum package
- 2500
Technical parameters
- Electronic Component
- LITTELFUSE
- Electronic Component
- SZP6SMB30AT3G
- Electronic Component
- 1
- Package
- SMB
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.21g
- Electronic Component
- 1
- Cj- Capacitor
- 635pF
- Electronic Component
- BM0265620325
- Voltage
- 41.4V
- Current(Ir)
- 5uA
- Voltage(VBR)
- 30V
- Electronic Component
- 2500
- Power(Ppp)
- 600W
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SZP6SMB30AT3G 产品概述
一、产品简介
SZP6SMB30AT3G 是 Littelfuse（美国力特）SZP6SMB 系列中单向 TVS 瞬态抑制二极管的一款型号，封装为 SMB。该器件专为抑制电源线或信号线上的瞬态过压而设计，能够在短时间内吸收高能量脉冲，保护下游电路免受雷击、浪涌和开关干扰等瞬变影响。
二、关键电气参数与含义
- 反向截止电压 Vrwm：25.6 V（器件在正常工作时允许的最大反向电压）
- 击穿电压 Vbr：30 V（开始进入击穿导通区的电压区间）
- 钳位电压 Vc：41.4 V（在指定峰值脉冲电流下的最大钳位电压）
- 峰值脉冲电流 Ipp：14.4 A（对应钳位电压时的瞬态电流能力）
- 峰值脉冲功率 Ppp：600 W @ 1 ms（在 1 ms 脉宽下的吸收能量能力）
- 反向电流 Ir：5 μA（在 Vrwm 下的漏电流，表明漏泄小）
- 结电容 Cj：635 pF（较高的结电容，适合电源或低速信号线）
三、典型应用场景
- 工业电源和直流母线防护（如 12V/24V 系统）
- 电源接口、适配器输入与电池管理系统的浪涌防护
- 汽车电子（非高速总线）中的浪涌与 ESD 保护（需根据整车规范评估）
- 低速信号线或开关电源旁路点的瞬态抑制
四、设计与布局建议
- 连接方式（单向）：通常将器件的阴极连到被保护线，阳极接地（在电源正向过压时通过击穿导通将能量导入地）。
- 尽量靠近受保护端口或连接器放置，缩短走线、减小寄生电感，以提高抑制效果。
- 为 SMB 封装开设足够的焊盘和热流散通道，必要时使用过孔导热至大面积接地层以提升能量吸收能力。
- 结电容 635 pF 较大，若用于高速数据线会影响信号完整性，推荐用于电源或低速控制线。
- 关注脉冲参数（600 W @ 1 ms），若遭受更宽脉宽或更高重复频率的冲击，应评估热耗散与寿命，并考虑并联或更大器件。
五、可靠性与选型要点
- 选型时应确保工作电压低于 Vrwm（25.6 V），同时允许在预期的最大瞬态电压下器件钳位到可接受的电平（41.4 V）。
- 若系统可能出现更高幅值或更长脉宽的冲击，需要参考厂商完整数据手册，确认功率、能量及重复脉冲能力。
- 小漏电流（5 μA）适合对静态功耗敏感的设计，但仍需在系统待机条件下评估总体漏电。
- 对于汽车或要求法规认证的应用，应结合整机规范和试验标准进行验证。
六、总结
SZP6SMB30AT3G 以其 600 W（1 ms）瞬态吸收能力、较低的漏电流和 SMB 封装，适合用于电源与低速信号线的浪涌保护。合理的 PCB 布局和工作电压匹配能发挥其最佳防护效果。详细的极限和测试条件请参考 Littelfuse 官方数据手册以完成最终设计验证。
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