WMSIC Electronic Components

RUILON RL3220A390K

ModelRL3220A390K
PackageSMD,8.2x5.1mm
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 RL3220A390K
Type
RUILON
Minimum package
500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RUILON
Electronic Component
RL3220A390K
Electronic Component
1
Package
SMD,8.2x5.1mm
Electronic Component
Varistor Resistor
Electronic Component
3.6J
Electronic Component
1g
Electronic Component
1
Varistor Voltage
45V
Electronic Component
BM0259279389
Voltage
99V
Operating Voltage(AC)
25V
Operating Voltage(DC)
30V
Surge Current
1.5kA
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.

RL3220A390K 产品概述

一、产品简介

RL3220A390K 是瑞隆源(RUILON)系列面向中小功率瞬态浪涌抑制的表面贴装压敏器件(SMD Varistor/TVS类保护元件)。该器件设计用于在直流与交流低电压系统中对瞬态过压和雷击、电感性负载开关产生的浪涌进行吸收与钳位,保护下游电路器件免受过压损害。器件封装为 SMD,外形尺寸约 8.2 × 5.1 mm,方便自动贴装与回流焊工艺集成。

关键参数(摘要)

  • 压敏电压: 45 V
  • 钳位电压: 99 V
  • 工作电压(DC): 30 V
  • 工作电压(AC): 25 V
  • 峰值浪涌电流: 1.5 kA
  • 能量吸收能力: 3.6 J
  • 封装: SMD,8.2 × 5.1 mm
  • 品牌: RUILON(瑞隆源)

二、主要特性与优势

  • 高浪涌吸收能力:峰值浪涌电流可达 1.5 kA,能量吸收 3.6 J,适合抑制短时高能脉冲。
  • 明确的压敏与钳位特性:压敏电压 45 V、钳位电压 99 V,可在过压发生时迅速导通并将电压限制在安全区间。
  • 低工作电压设计:DC 工作电压 30 V、AC 工作电压 25 V,尤其适配 24 V 级别的工业、通信及控制电源系统。
  • SMD 封装:8.2 × 5.1 mm 的表面贴装封装,便于自动化装配和体积优化的电路设计。
  • 成本与可靠性平衡:适合需要成本可控而可靠的浪涌保护场合。

三、典型应用场景

  • 工业控制与自动化:24 V 控制回路、传感器供电线、现场总线接口的浪涌保护。
  • 通信设备:交换机、路由器、基站设备中电源输入端的瞬态抑制。
  • 电源模块与电池管理:直流母线、输入端保护和逆变器/驱动器的过压保护。
  • 消费与办公设备:打印机、监控设备等需要对开关浪涌进行抑制的电源输入端。
  • 其他低压系统:任何 DC 30 V 及以下或 AC 25 V 及以下需抗浪涌保护的场合。

四、典型电气含义与选型建议

  • 压敏电压(45 V):表示器件在规定测试电流下开始显著导通的电压。选型时应保证正常工作电压远低于压敏电压以避免误动作。
  • 钳位电压(99 V):在峰值浪涌电流下的最大电压值。若被保护器件耐压低于此值,应考虑并联或并用其他保护措施。
  • 工作电压(DC 30 V / AC 25 V):长期额定电压,不宜常态超过该值,推荐在其 70–80% 范围内选择以提高可靠性。
  • 峰值浪涌与能量:1.5 kA 与 3.6 J 表明能承受短时大电流冲击;对于反复或长时间高能量冲击,需关注器件的老化与热累积。

选型要点:

  • 若系统存在反复高能脉冲或需更高钳位能力,应选择更高能量或并联多只器件。
  • 对于敏感逻辑器件(低耐压),建议在输入端先使用低压 TVS/抑制器件,再配合 RL3220A390K 做二级防护。

五、封装与安装建议

  • 封装尺寸 8.2×5.1 mm,SMD 形式适合回流焊。推荐按厂方提供的焊盘布局与焊膏涂布进行 PCB 设计,以保证良好焊接与热散逸。
  • 回流焊注意事项:遵循元件厂家或 IPC/JEDEC 的回流曲线推荐,避免过高峰值温度和过长热暴露时间。若无厂方数据,遵循常规 SMD 无铅回流峰值 245–260°C 的工艺规范,并进行工艺验证。
  • 机械应力:贴片后避免在器件上施加过大机械应力或弯曲 PCB,以免引起内部裂纹导致性能退化。

六、使用与可靠性注意事项

  • 环境与热管理:工作环境温度与散热条件会影响器件的能量吸收能力与寿命,设计时预留足够热裕量,避免频繁高能量冲击下温升过高。
  • 老化与退化:压敏器件在多次大能量浪涌后会有老化现象,建议关键保护点进行定期检查或在设计中留置替换策略。
  • 并联/串联使用:并联器件时需注意分流均匀问题,推荐使用相同型号、相同批次并留有匹配元件;串联使用会改变钳位与工作特性,不常用且需谨慎验证。

七、储存与安全搬运

  • 储存环境:避免潮湿、高温与强光照射,建议常温干燥环境下储存,必要时使用防潮袋和干燥剂。
  • ESD 防护:尽管为过压保护器件,但在装配与搬运中仍应采取静电防护措施(佩戴防静电手环、使用防静电工作台)。
  • 规范处置:废弃元件应依据当地环保法规处置,避免随意丢弃。

总结:RL3220A390K 以其 45 V 的压敏触发、99 V 的钳位能力和 1.5 kA 的峰值浪涌承受能力,适合用于 24 V 等低压系统的浪涌保护场景。合理的 PCB 布局、焊接工艺与热管理可充分发挥其保护性能并延长使用寿命。使用前建议参阅瑞隆源详细数据手册以获取完整电气特性、回流曲线和推荐焊盘信息。

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