WMSIC Electronic Components

KUU KESD0805/27V

ModelKESD0805/27V
Package0805
BrandKUU
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
KUU KESD0805/27V
Type
KUU
Minimum package
4000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
KUU
Electronic Component
KESD0805/27V
Electronic Component
1
Package
0805
Electronic Component
Varistor Resistor
Electronic Component
300mJ
Electronic Component
0.041g
Electronic Component
1
Varistor Voltage
36V
Electronic Component
BM0264356197
Voltage
60V
Static Power
300mW
Static Capacitor
210pF@1MHz
Operating Voltage(AC)
20V
Operating Voltage(DC)
27V

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

KESD0805/27V 压敏电阻产品概述

KESD0805/27V是KUU品牌推出的一款0805贴片封装压敏电阻,专为小型化电子设备的过压防护设计,平衡了浪涌吸收能力与高频信号兼容性,适用于多种低功耗、高频场景的电路保护需求。

一、产品定位与核心优势

该产品针对小型化、高频化电子设备的防护痛点,核心优势体现在三方面:

  1. 体积紧凑:0805贴片封装适配自动化贴装,满足便携设备(如蓝牙耳机、智能手环)的空间限制;
  2. 防护精准:压敏电压与工作电压匹配度高,避免正常工作时误触发,过压时快速响应;
  3. 高频兼容:低静态电容不会过度干扰射频、通信等高频信号传输,适合对电容敏感的电路。

二、关键参数详细解析

1. 电压与防护响应

  • 压敏电压(V₁ₘₐ):36V(测试电流1mA时的导通电压),确保电路正常工作时(DC≤27V、AC≤20V)处于高阻态,无额外功耗;
  • 钳位电压(V_C):60V(8/20μs浪涌电流下),当浪涌电压超过压敏电压时,快速将电压钳位在60V以内,保护后端敏感元件(如MCU、传感器);
  • 工作电压范围:DC最大27V、AC最大20V,覆盖常见低电压电路(如3.3V、5V系统的二次防护)。

2. 浪涌吸收能力

  • 峰值浪涌电流(Iₚₚ):100A(8/20μs波形),可承受单次强浪涌冲击;
  • 能量吸收(E):300mJ,能有效吸收静电放电(ESD)、感应雷击等瞬态能量,避免元件损坏。

3. 电气损耗与兼容性

  • 静态电容:210pF@1MHz,远低于传统大容量压敏电阻,适合Wi-Fi、蓝牙等2.4GHz频段的射频电路;
  • 静态功率:300mW,正常工作时功耗极低,不影响设备续航(如电池供电的便携设备)。

三、封装与典型应用场景

1. 封装特性

0805贴片封装(尺寸2.0mm×1.2mm),符合IPC标准,支持回流焊工艺,适合批量生产;表面镀锡层抗氧化,长期可靠性高。

2. 典型应用

  • 消费电子:蓝牙耳机、智能手表、便携式充电器的端口防护;
  • 通信设备:路由器、交换机的以太网端口、射频接口防护;
  • 工业控制:低功耗传感器节点、PLC辅助电路的过压防护;
  • 汽车电子:车载USB接口、仪表盘小功率电路的瞬态保护(需匹配车载温度范围)。

四、可靠性与验证情况

该产品已通过全流程可靠性校验,覆盖:

  • 浪涌测试:符合IEC 61000-4-5(100A峰值浪涌冲击后性能无衰减);
  • 环境测试:-40℃~85℃温度循环、湿度(90%RH)测试,满足工业级与消费级场景;
  • 电性能测试:压敏电压一致性偏差≤±10%,静态电容偏差≤±20%,确保批量应用的稳定性。

五、选型与应用注意事项

  1. 电压匹配:电路工作电压需低于额定DC27V/AC20V,避免长期过压导致元件老化;
  2. 布局优化:防护元件应靠近输入端口,减少引线长度(≤5mm),降低引线电感对防护效果的影响;
  3. 并联使用:若需更高浪涌电流(如≥200A),可采用多颗并联,但需保证每颗压敏电阻的电压一致性;
  4. 存储要求:未使用时存储于干燥环境(湿度≤60%RH),避免高温暴晒。

KESD0805/27V通过紧凑封装与平衡的电气性能,为小型电子设备提供了可靠的过压防护方案,适用于对体积、高频兼容性有要求的各类场景。

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