WMSIC Electronic Components

JJW SMCJ48CA

ModelSMCJ48CA
PackageSMC(DO-214AB)
BrandJJW
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
JJW SMCJ48CA
Type
JJW
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
JJW
Electronic Component
SMCJ48CA
Electronic Component
1
Package
SMC(DO-214AB)
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.218g
Electronic Component
1
Electronic Component
BM0263673021
Voltage
77.4V
Current(Ir)
1uA
Voltage(VBR)
53.3V
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.

SMCJ48CA 瞬态抑制二极管(TVS)产品概述

一、产品简介

SMCJ48CA 是捷捷微(JJW)推出的双向瞬态电压抑制器(TVS),封装为 SMC (DO-214AB)。该器件专为抑制瞬态浪涌和雷击/开关瞬变而设计,适用于工业、通信、电源及汽车电子等领域的电压保护需求。器件为双向结构,便于在交流或对称脉冲环境中使用。

二、主要性能特点

  • 极性:双向(适合双向浪涌/交流保护)
  • 反向截止电压 Vrwm:48 V(建议工作电压上限参考值)
  • 钳位电压:77.4 V(在峰值脉冲条件下的最大钳位)
  • 峰值脉冲电流 Ipp:19.4 A(对应10/1000 μs脉冲)
  • 峰值脉冲功率 Ppp:1.5 kW(标准 10/1000 μs 浪涌波形)
  • 击穿电压 VBR:53.3 V(启动导通/击穿点)
  • 反向电流 Ir:1 μA(在 Vrwm 条件下的泄漏小)
  • 类型:TVS,封装 SMC (DO-214AB)

三、电气参数说明(关键点)

  • Vrwm(48 V)为推荐最大持续工作电压,器件在该电压下漏电仅约 1 μA。
  • VBR(53.3 V)为击穿起始电压,超过此电压器件进入雪崩导通以限制电压上升。
  • 钳位电压 77.4 V 表示在规定脉冲条件下被限制到的峰值电压,设计中应以此保护后级器件。
  • Ppp 1.5 kW@10/1000 μs 与 Ipp 19.4 A 表明该器件能吸收较长时间宽度的高能量浪涌,适合雷击和工频转瞬变试验。

四、典型应用

  • 直流/交流电源总线保护(如48 V 工业电源)
  • 通信接口与数据线防护(差分/对称信号)
  • 逆变器、变频器及驱动电路的输入侧浪涌防护
  • UPS、充电桩及配电柜的浪涌保护模块

五、选型与使用建议

  • 工作电压选择:Vrwm 应高于系统正常工作电压,建议留有 10%~30% 余量以降低误动作风险。
  • 能量管理:连续或频繁的大能量脉冲会产生热量,应评估散热与重复脉冲能力并做适当降额处理。
  • 双向接法:用于交流或双向脉冲时直接跨接保护线对;用于单极直流場合可考虑单向型 TVS。
  • 漏电考量:系统对微电流敏感时,应核实 Ir(1 μA)是否满足要求。

六、封装与安装注意

  • SMC (DO-214AB) 封装适合波峰/回流焊工艺,焊盘与散热垫需按厂家推荐封装图设计。
  • 焊接温度和时间应符合焊接规范,以免影响 TVS 特性及长期可靠性。
  • 安装位置靠近被保护端口,走线尽量短且宽,降低寄生电感,提高抑制效果。

七、可靠性与测试建议

  • 在实际设计中,建议按 10/1000 μs 浪涌波形对样片做一次吸收能力验证。
  • 做热循环、振动和多次浪涌测试以评估长期稳定性。
  • 出货前可做基本的静态参数抽测(Vrwm、VBR、Ir、钳位电压)。

产品型号:SMCJ48CA;品牌:JJW(捷捷微);封装:SMC (DO-214AB)。该器件以其较高的吸能能力、较低的泄漏和明确的钳位特性,适用于要求可靠浪涌防护的各类电力与电子系统。若需更详细的封装尺寸、温度范围或典型曲线,建议索取厂家完整数据手册以便最终设计验证。

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