WMSIC Electronic Components

BORN SMCJ40A

ModelSMCJ40A
PackageSMC
BrandBORN
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
BORN SMCJ40A
Type
BORN
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
BORN
Electronic Component
SMCJ40A
Electronic Component
1
Package
SMC
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.352g
Electronic Component
1
Electronic Component
BM0264602968
Operating Temperature
55℃~+150℃
Voltage
64.5V
Current(Ir)
1uA
Voltage(VBR)
49.1V
Electronic Component
Electronic Component

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

SMCJ40A 产品概述

一、产品简介

SMCJ40A 为单向电压瞬态抑制二极管(TVS),由 BORN(伯恩半导体)制造,采用 SMC(DO-214AB)封装,专为电源接口过压和浪涌保护设计。器件在瞬态冲击条件下提供快速钳位,保护下游电路免受高能脉冲损害,适用于工业电源、通信电源模块及汽车电子(非车规版本需确认)等场合。

二、主要电气参数

  • 极性:单向
  • 反向工作电压 Vrwm:40 V
  • 击穿电压 VBR(典型):49.1 V
  • 钳位电压(Ipp 下):64.5 V
  • 峰值脉冲电流 Ipp(10/1000 µs):23.3 A
  • 峰值脉冲功率 Ppp(10/1000 µs):1.5 kW
  • 反向漏电流 Ir:1 µA(典型)
  • 工作温度范围:-55 ℃ 至 +150 ℃

三、关键特性与优势

  • 高能量吸收:在 10/1000 µs 波形下可承受 1.5 kW 峰值脉冲功率,适合电源类慢上升浪涌。
  • 有效钳位:在额定脉冲电流下钳位电压 64.5 V,能将瞬态电压限制在可接受范围,保护敏感器件。
  • 低漏电流:1 µA 的反向漏电确保在正常工作时对系统无明显额外功耗与误触发风险。
  • 宽温工作区间:-55 ℃ 到 +150 ℃,适应苛刻环境与长期稳定性需求。
  • SMC 封装易于波峰/回流焊接、散热和替换,适合批量生产与维修。

四、典型应用场景

  • 各类电源输入端浪涌保护(开关电源、适配器、UPS)
  • 工业控制设备与继电器驱动电路的过压抑制
  • 通信设备电源接口、基站供电防护
  • 可用于直流总线、24 V/48 V 系统中对瞬态过压的保护(需结合系统容许电压确认)

五、设计与使用建议

  • 器件应尽量靠近被保护端口放置,以缩短寄生电感路径,提高抑制效率。
  • 考虑并联或选择更高能量等级的 TVS 以应对更大或更频繁的冲击。
  • 在高温长期运行场景下,需留足热阻裕度并按厂家重力图(derating)进行功率管理。
  • 对车规或安规要求较高的系统,建议参照完整数据手册验证封装、电气参数及可靠性认证。

六、可靠性与注意事项

SMCJ40A 在正常使用条件下具备良好的抗浪涌能力和热稳定性,但应避免在超过峰值脉冲规格的冲击下长期工作;若遭受多次高能量冲击,需检测器件是否损伤并及时更换。器件焊接与储存应遵循潮湿敏感器件(MSL)和焊接温度曲线要求,保证长期可靠性。

如需更详细的特性曲线、典型波形和封装机械尺寸,请参阅 BORN 官方数据手册或联系供应商获取完整资料。

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