WMSIC Electronic Components

RUILON 07D681K

Model07D681K
PackageThrough-hole, P=5mm
BrandRUILON
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
RUILON 07D681K
Type
RUILON
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RUILON
Electronic Component
07D681K
Electronic Component
1
Package
Through-hole, P=5mm
Electronic Component
Varistor Resistor
Electronic Component
36J
Electronic Component
0.873g
Electronic Component
1
Varistor Voltage
612V~748V
Electronic Component
BM0258852261
Voltage
1.12kV
Static Power
250mW
Static Capacitor
65pF
Operating Voltage(AC)
420V
Operating Voltage(DC)
560V

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

07D681K 产品概述

一、产品简介

07D681K 是瑞隆源(RUILON)系列中的一种压敏电阻(MOV)类浪涌保护元件,面向高压直流与高电压交流场景的过压钳位保护。该型号具有较高的压敏电压与钳位能力,可在瞬态冲击出现时迅速导通、吸收能量并将电压限制在可接受范围,从而保护下游器件和系统。

二、主要参数与电气特性

  • 压敏电压(Varistor Voltage):612V ~ 748V(表征器件在标称电流下的起始导通区间)
  • 钳位电压(Clamping Voltage):约 1.12kV(在峰值浪涌电流条件下的保护电压)
  • 工作电压(DC):560V(推荐持续施加的直流电压)
  • 工作电压(AC):420V(推荐持续施加的交流有效值)
  • 峰值浪涌电流:1.2kA(器件可承受的瞬态冲击峰值)
  • 能量吸收:36J(通常按工业标准浪涌波形评定,用于评估一次浪涌的能量处理能力)
  • 静态电容:65pF(表征在低频/高频下对信号的影响,属较低电容量级)
  • 静态功率:250mW(在工作电压下的最大功耗/漏散能指标)

以上参数共同决定了该器件在高压母线、变频器、逆变器、电源模块及类似场合的保护能力。

三、典型应用场景

  • 工业电源与逆变器直流母线保护(如 400VAC / 560VDC 系统)
  • 光伏逆变器、风力发电变流器的直流侧浪涌抑制
  • 中低压配电系统与整流器的过压保护
  • 开关电源、功率模块入口的瞬态冲击限制
  • 需要低电容影响的保护应用(如对信号完整性敏感的电源接口)

四、选型与使用建议

  • 工作电压裕度:选择压敏电压时应确保其高于系统正常工作电压,但低于允许的绝缘/器件承受电压。07D681K 在 560VDC 的工作点下有合理裕度(压敏下限约 612V),适合 560V 级别直流母线。
  • 浪涌能力匹配:若系统可能遭受更大峰值或重复冲击,应选择峰值电流更高或能量更大的MOV或并联多个器件分担能量。
  • 热管理:静态功率 250mW 指示在持续高压下会有漏散热,长时间工作需保证散热路径,避免温升导致参数漂移或老化。
  • 容量影响:65pF 的电容对高速信号影响较小,但在高频敏感电路中仍需评估串联/并联对信号完整性的影响。
  • 公差说明:“K”通常表示压敏电压公差等级,选型时考虑实际工况允许的变动范围。

五、安装与环境注意事项

  • 机械固定:避免过度弯曲引脚或施加弯矩,确保引脚焊接良好并留有应力释放空间。
  • 位置选择:尽量靠近被保护端口或被保护器件安装,以减少寄生阻抗与回路面积。
  • 温度影响:避免在高温环境中长期运行,温度会显著影响寿命与漏电特性。若工况温度较高,应采取散热或降载策略。
  • 过压/短路保护:在可能的极端故障(持续过压或多次大冲击)条件下,应配合熔断器或热保护装置,防止器件损坏引发安全问题。

六、可靠性与维护要点

  • 寿命与退化:压敏电阻在反复浪涌后会逐步退化(压敏电压漂移、泄漏增加),建议对关键保护路径做定期检测或预防性更换。
  • 测试与验证:在样机阶段做实际浪涌测试(例如 8/20µs 波形)以验证钳位水平与能量吸收是否满足系统需求。
  • 替换策略:若发现泄漏电流显著上升、钳位失效或表面烧蚀,应及时更换并排查浪涌原因。

总结:07D681K 以其较高的压敏电压、1.2kA 峰值浪涌能力和 36J 的能量吸收能力,适合用于中高压电源和逆变器等场景的过压保护。正确的选型、合理的安装与热管理是保证其长期稳定发挥保护作用的关键。

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