WMSIC Electronic Components

RUILON 14D470K

Model14D470K
PackageThrough-hole, P=7.5mm
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 14D470K
Type
RUILON
Minimum package
250 袋装

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RUILON
Electronic Component
14D470K
Electronic Component
1
Package
Through-hole, P=7.5mm
Electronic Component
Varistor Resistor
Electronic Component
15J
Electronic Component
1.872g
Electronic Component
1
Varistor Voltage
43V~53V
Electronic Component
BM0227625279
Voltage
93V
Static Power
100mW
Static Capacitor
6.5nF@1kHz
Operating Voltage(AC)
30V
Operating Voltage(DC)
38V

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

14D470K 产品概述

一、产品简介

14D470K 是 RUILON(瑞隆源)品牌的一款插件式压敏电阻,封装为 D17×8mm,针距 P=7.5mm,适用于低电压直流/交流系统的浪涌抑制。该器件标称压敏电压范围为 43V~53V,在规定浪涌条件下的钳位电压约为 93V,能够在瞬态冲击时吸收较大能量,保护下游电路免受过电压损害。

二、主要参数

  • 压敏电压(标称):43V ~ 53V
  • 钳位电压(典型):93V
  • 能量吸收能力:15J
  • 峰值浪涌电流:1kA(单次脉冲条件下)
  • Ip(参考):10A(参考稳态/短时间允许电流)
  • 工作电压:DC 38V;AC 30V
  • 静态电容:6.5nF @ 1kHz
  • 静态功率(持续耗散功率):100mW
  • 封装形式:插件(D17×8mm),引脚间距7.5mm
  • 典型应用品牌型号:RUILON VAR_D17X8MM_TM 系列

三、产品特点

  • 高能量吸收:15J 的能量等级使其能在单次浪涌事件中吸收较多能量,适合配合限流元件对瞬态进行衰减。
  • 高峰值冲击承受力:峰值浪涌电流可达 1kA,能应对雷击感应或开关突变产生的短时大电流脉冲。
  • 低工作电压兼容性:DC 38V / AC 30V 的工作电压范围,适用于 24V/36V 等常见低压系统。
  • 较小静态电容:6.5nF 在高频电路设计中需考虑其对信号带宽的影响,但对多数电源线抑制应用是可以接受的。
  • 插件封装:便于手工焊接和维修替换,适合样机验证、小批量和维修场景。

四、典型应用场景

  • 工业自动化与控制系统的24V/36V电源防护。
  • 开关电源(SMPS)、适配器输入端的浪涌保护。
  • LED 驱动电源的输入过压吸收与浪涌抑制。
  • 消费电子设备、仪器仪表的输入端防雷浪涌吸收(须确认能量与电流匹配)。
  • 可用于直流匝间突发电压或开关瞬态保护场合。

五、使用与安装注意事项

  • 安装位置:建议靠近被保护的输入端或器件布局中最接近外部接口的位置,以最小化导线或走线的串联电感。
  • 引线和走线:保持引线尽量短且粗,以降低寄生电感,提高能量释放效率。插件封装在机械固定时应避免引脚承受过大弯折应力。
  • 配合元件:对于大能量或可重复冲击场合,建议与熔断器、限流电阻或气体放电管等组合使用以分担能量并防止压敏电阻反复承受高能量导致过早失效。
  • 热管理:静态功率 100mW 表明常态下漏电耗散有限,但在高频或持续应力下可能升温,应预留散热空间并避免与热源靠近。
  • 焊接工艺:插件元器件常用波峰/手工焊接,注意不宜长时间高温加热焊点,防止内部结构受损。具体焊接温度与时间应遵循厂方推荐。

六、可靠性与储存建议

  • 储存环境:建议在干燥、常温、无腐蚀性气体环境中保存,避免潮湿和强光直射。
  • 使用寿命:压敏电阻在频繁承受高能脉冲或高温环境下寿命会下降,重要系统中应设计冗余或定期检测替换。
  • 检测方法:可通过测量静态电阻/泄漏电流和外观检查判断是否发生损坏;出现明显碳化、裂纹或漏电增加应立即更换。

七、选型与替代建议

选择时应关注:最大脉冲电流与能量是否满足最恶劣工况;工作电压需高于系统正常电压;静态电容对信号/控制线影响是否可接受。若需更高能量或更低钳位电压,可选能量等级更高或压敏电压更低的型号;若希望更小体积或更低电容,可考虑表贴型或小尺寸器件,同时注意额定电流与能量匹配。

总结:14D470K(RUILON)以其 15J 的能量吸收、1kA 的瞬态承受能力和插件式 D17×8mm 封装,适合用于低压电源与输入端的浪涌防护。在设计中应结合具体工作电压、冲击能量与安装条件合理选型与布局,以达到稳定可靠的防护效果。

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