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CJ SMAJ33CA
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- CJ SMAJ33CA
- Type
- CJ
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJ
- Electronic Component
- SMAJ33CA
- Electronic Component
- 1
- Package
- SMAG
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.109g
- Electronic Component
- 1
- Electronic Component
- BM0228678254
- Voltage
- 53.3V
- Current(Ir)
- 5uA
- Voltage(VBR)
- 40.6V
- Electronic Component
- Electronic Component
- Electronic Component
- 5000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMAJ33CA TVS 二极管（CJ 江苏长电/长晶）产品概述
一、产品简介
SMAJ33CA 是江苏长电（CJ/长晶）推出的一款双向瞬态电压抑制器（TVS 二极管），封装为 SMA（标识为 SMAG）。该器件专为浪涌与瞬态过压保护设计，适用于直流和交流电源线、数据接口及各类工业电子设备的瞬态浪涌防护。
二、主要参数（典型/额定）
- 类型：TVS，双向
- 反向截止电压 Vrwm：33 V
- 击穿电压（Vbr）：约 40.6 V
- 钳位电压（Vcl）：约 53.3 V（对应脉冲测试条件）
- 峰值脉冲功率 Ppp：400 W @ 10/1000 μs 波形
- 峰值脉冲电流 Ipp：7.5 A @ 10/1000 μs
- 反向漏电流 Ir：约 5 μA（在 Vrwm 条件下）
- 封装：SMA（SMAG）
以上参数表明该器件在 33 V 工作电压附近具有良好的导通响应与较低的泄漏，能在规定脉冲波形下吸收显著能量。
三、性能特点与优势
- 双向结构：可对正负极性瞬态事件提供对称保护，适用于交流线路或双向浪涌场景。
- 高能量吸收能力：10/1000 μs 条件下 400 W 峰值功率，能承受工业环境的中等能量浪涌。
- 低漏电流：Vrwm 条件下约 5 μA，有利于低功耗或精密电路应用。
- SMA 小型封装：便于表面贴装，适合紧凑电路布局与批量生产。
四、典型应用场景
- 24 V / 30 V 直流供电系统的输入浪涌保护
- 工业控制与自动化设备的电源与信号线保护
- 电源适配器、充电器的输入/输出防护
- 通信接口、I/O 端口及传感器线路的瞬态抑制 （注：用于具体场景前，请根据系统预期浪涌幅值与能量选择合适容量与数量的 TVS 组合。）
五、使用建议与电路布局要点
- 选型提示：若系统稳态最高电压接近或低于 33 V，可采用 SMAJ33CA；若预期冲击电流或能量超过 7.5 A / 400 W（10/1000 μs），应选用更大能量等级或并联多只器件并考虑限流元件。
- 布局建议：将 TVS 放置于信号/电源入点处，尽量靠近需要保护的接口，走线最短、回流路径低阻抗，以降低有效串联电感与电阻，提升抑制效率。
- 热管理：SMA 封装散热依赖 PCB 铜箔，建议在焊盘处增加铜厚或铺铜以利散热；长期高频浪涌或多次大能量冲击会导致温升，应评估长期可靠性。
- 安装与焊接：按照常规 SMD 工艺进行回流焊，避免超出器件允许的热循环极限；存储与防静电包装应遵循常规半导体器件规范。
- 注意事项：双向 TVS 在电路中呈两端对称导通特性，使用时无需区分极性，但设计时仍需考虑钳位电压对后端器件的剩余电压影响。
该产品以其稳定的钳位性能与较高的能量吸收能力，适合多种工业与民用电子设备的瞬态干扰防护。如需进一步的电气特性曲线、封装尺寸图或可靠性数据，可向销售/技术支持索取器件完整数据手册以便于最终设计验证。
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