WMSIC Electronic Components

RUILON RL0805A180K

ModelRL0805A180K
Package0805
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
RUILON RL0805A180K
Type
RUILON
Minimum package
4000 编带

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RUILON
Electronic Component
RL0805A180K
Electronic Component
1
Package
0805
Electronic Component
Varistor Resistor
Electronic Component
200mJ
Electronic Component
0.045g
Electronic Component
1
Varistor Voltage
16.8V~21V
Electronic Component
BM0257675632
Voltage
46V
Operating Voltage(AC)
11V
Operating Voltage(DC)
14V
Surge Current
50A
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.

RL0805A180K 产品概述

一、产品简介

RL0805A180K 是 RUILON(瑞隆源)推出的一款 0805 封装瞬态抑制元件,适用于 12V 级别电源与信号线的浪涌/过压保护。器件体积小、响应快,可在有限的 PCB 面积内提供有效的瞬态抑制能力,常用于消费电子、电源管理、车载辅助电路和工业控制端口的过电压防护。

二、主要参数

  • 压敏电压(Varistor Voltage, Vb):16.8V ~ 21V
  • 钳位电压(Clamping Voltage, Vc):46V(对应峰值浪涌条件)
  • 工作电压(DC,最大持续):14V
  • 工作电压(AC,有效值):11V
  • 峰值浪涌电流(Ipk):50A
  • 能量吸收能力:200 mJ(短脉冲能量)
  • 封装:0805(约 2.0 × 1.25 mm)

三、关键性能解析

  • 压敏电压 16.8–21V 表明器件在超过该区间时开始导通并钳位,适合保护 12V 系统(汽车蓄电/点火瞬态考虑了 14V DC 工作电压的余量)。
  • 46V 的钳位电压是在峰值浪涌下对被保护电路的最高限制参考,能有效限制大幅瞬态电压对下游器件的损害。
  • 50A 峰值浪涌电流与 200 mJ 的短时能量能力说明该元件能承受短时大电流冲击(如电源瞬态、继电器开关尖峰或线路雷击剩余脉冲),但并不意味着可长期替代更大功率的浪涌保护器件。
  • 0805 小封装便于自动贴装与高密度 PCB 布局,但同时对热量与能量分散能力有限,须在设计上考虑热与电流路径。

四、典型应用场景

  • 汽车电子:12V 辅助电源、车载通信接口、车灯控制模块的瞬态抑制(需满足车辆电磁兼容与温度范围要求时请注意选型)。
  • 消费电子:电源输入端、充电器、适配器的输入保护。
  • 工业控制:传感器线路、I/O 接口的浪涌/过压保护。
  • 通信设备:数据线与电源线的瞬态电压钳位。

五、使用与选型建议

  • 工作电压对比:确保系统最大工作电压(包括纹波与运行过压)低于器件标称工作电压(DC 14V / AC 11V)。
  • 钳位评估:选择时以最大允许钳位电压判断是否会损伤后端器件,必要时增加下游保护或采用低钳位器件。
  • 浪涌裕度:若系统可能遭受高能量浪涌(如雷击或长电缆感应),考虑并联多个同型号元件或采用更高能量等级的保护器件。
  • 温度与老化:高温会降低器件的浪涌能力与寿命,长时间在高压、高温条件下工作需进行适当降额。
  • 客户场景验证:在最终产品中进行脉冲浪涌、重复浪涌及工作温度下的验证,确认长期可靠性。

六、封装与安装要点

  • 0805 小尺寸利于高密度布局,建议将 RL0805A180K 放置于被保护端口或电源入口的最靠近处,尽量缩短导线/铜走线长度以降低串联感抗。
  • 焊接工艺兼容常见回流焊流程,但应避免过热或长时间过熔,遵循元件供应商的回流温度曲线以免性能退化。
  • PCB 布局上尽量使用对称焊盘与充足的散热铜箔,避免在器件周围放置热源或通过孔直接穿过以免影响热耗散能力。

七、包装与可靠性说明

  • 封装为标准 0805,适配自动贴片与回流焊装配线,便于大批量生产。
  • 对于关键或严苛环境(如汽车高温/高振动),建议与供应商确认具体的环境测试报告(寿命、高温储存、热冲击与机械冲击测试结果),并在设计中预留替换或更高等级保护方案。

总结:RL0805A180K 以其小型化封装与针对 12V 级系统的压敏电压与钳位能力,适合空间受限且需短时浪涌抑制的应用场合。在应用时应综合考虑工作电压裕度、钳位电压对后端器件的影响以及器件的能量/电流承受能力,必要时通过电路设计和并联/级联保护手段提升系统整体抗冲击能力。

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