WMSIC Electronic Components

XFCN PTF-77

ModelPTF-77
PackageThrough-hole, P=22.5mm
BrandXFCN
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
XFCN PTF-77
Type
XFCN
Minimum package
500 袋装

Technical parameters

Electronic Component
Electronic Component
Electronic Component
XFCN
Electronic Component
PTF-77
Electronic Component
1
Package
Through-hole, P=22.5mm
Electronic Component
Fuse Holder
Electronic Component
2.438g
Electronic Component
5
Channel Count
1
Electronic Component
BM0265136711
Voltage
250V
Current
20A
Fuse Type
Electronic Component
Fuse
20mm
Fuse Holder Type
Electronic Component
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.

PTF-77 圆柱保险丝支座产品概述

一、产品核心定位与适用场景

PTF-77是XFCN(兴飞)品牌推出的单通道支座型圆柱保险丝座,专为适配φ5×20mm标准圆柱保险丝设计,聚焦中低功率电路的过流保护集成需求。产品兼顾安装灵活性与可靠性,适用于空间紧凑、防护等级要求适中的电子设备,是小型家电、办公设备等领域的常规保护组件。

二、关键技术参数解析

2.1 电气核心参数

  • 额定电压:AC 250V(覆盖家用及小型工业电路的常规电压等级);
  • 额定电流:20A(满足多数小型负载的过流保护阈值,需结合电路实际负载留1.2~1.5倍余量);
  • 熔断特性兼容性:支持快断/慢断圆柱保险丝(需根据电路敏感程度选择)。

2.2 机械与材料参数

  • 通道数:1(单保险丝独立配置,避免串扰);
  • 适配尺寸:仅兼容φD=5mm、长度20mm的圆柱保险丝(全球通用5×20系列);
  • 绝缘材料:阻燃V0级PA66工程塑料(抑制火焰蔓延,耐温-40℃~105℃);
  • 导电件:高导电磷铜(抗氧化、低接触电阻,减少发热损耗)。

三、适配与兼容性说明

3.1 电路匹配要求

需确保电路工作电压≤250V、最大工作电流≤20A(保险丝额定电流需与电路峰值电流匹配,避免误熔断或过载失效)。

3.2 安装方式兼容

支座式结构支持两种主流安装场景:

  • 面板开孔安装:常见开孔直径8~10mm(适配多数设备面板布局);
  • PCB焊接安装:部分型号带插脚(需确认具体型号是否带引脚),适合电路板集成。

四、结构设计与可靠性特点

4.1 紧凑布局优势

单通道设计占用空间极小(整体尺寸约φ10mm×25mm,需结合具体型号确认),适配小型化设备内部紧凑布局。

4.2 接触可靠性设计

导电件采用弹性卡接结构,保险丝插入后自动夹紧,确保接触紧密(接触电阻≤10mΩ),避免松动导致的发热或断路。

4.3 防护与耐候性

绝缘壳体全包裹导电部分,防止短路风险;宽温范围适应家电日常温度波动(如电饭煲加热时的温度变化)、办公设备长期运行环境。

五、典型应用领域

  1. 小型家电:电饭煲、电水壶、微波炉(辅助电路过流保护);
  2. 办公设备:打印机、扫描仪、投影仪(电源模块低压侧保护);
  3. 照明设备:LED驱动电源、小型灯具(线路过流防护);
  4. 小型工业控制:PLC辅助电路、传感器模块(低功率电路过载保护)。

六、选型与安装注意事项

6.1 选型要点

  • 确认保险丝规格:必须为φ5×20mm圆柱保险丝(PTF-77不兼容其他尺寸);
  • 熔断特性匹配:敏感电路选快断保险丝,感性负载(如电机)选慢断保险丝;
  • 电流余量:保险丝额定电流需≥电路峰值电流×1.2倍(避免频繁熔断)。

6.2 安装维护注意

  • 焊接安装(带引脚型):焊接温度≤260℃,单次焊接时间≤3秒(防止绝缘壳体变形);
  • 面板安装:开孔需与支座直径匹配,安装后用螺母固定(避免震动松动);
  • 更换注意:保险丝熔断后必须更换同规格产品,禁止用导线替代(失去保护作用)。

PTF-77以其适配性强、安装灵活、可靠性高的特点,成为中低功率电路过流保护的常规选择,适用于对成本与性能平衡要求较高的电子设备。

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