电阻
保险丝指外观形状类似电阻，部份产品用色环标示来区分
电流大小，所以取名为电阻保险丝，又为PICO毕高保险丝。
区分方法
其中2*6 mm同3*9mm电阻保险丝外观有用到色环标示来区分电流的大小。125V/250V。
分类
按熔断特性可分为：
快速熔断电阻保险丝、慢速熔断
电阻保险丝。产品取得认证有UL CSA ROHS等。该产品多为编带生产。
标准规格型号
251/253 Number code 62mA-10A/125V, 12/15A/23V/Facting acting D2.4x7mm UR/CSA/PSE
263 Number code 62mA-5A/125V/Facting acting D2.4x7mm UR/CSA
471 Number code 500mA-5A/125V/Facting acting D2.4x7mm UR/CSA/PSE
473 Number code 375mA-7A/125V/Facting acting D2.4x7mm UR/CSA/PSE
S3090 Number code, Grass green color 1A-5A/125V/250V, Fast-acting D3xL9xH59 ROHS/CCC/CE
S2560 Number code, Grass green color 1A-3A/125V/250V, Fast-acting D2.5xL6xH50 ROHS/CCC/CE
S2560B Number code, Grass green color 1A-3A/125V/250V, Fast-acting D2.5xL6xH80 ROHS/CCC/CE
R3090 Color code, Grey color 2A-5A/125V/250V, Fast-acting D3xL9xH59 ROHS/CCC/CE
R2560 Color code, Grey color 1A-3A/125V/250V, Fast-acting D2.5xL6xH50 ROHS/CCC/CE
R2560B Color code, Grey color 1A-3A/125V/250V, Fast-acting D2.5xL6xH80 ROHS/CCC/CE
C3090 Color code, Brown color 2A-5A/125V/250V, Fast-acting D3xL9xH59 ROHS/CCC/CE
C2560 Color code, Brown color 1A-3A/125V/250V, Fast-acting D2.5xL6xH50 ROHS/CCC/CE
C2560B Color code, Brown color 1A-3A/125V/250V, Fast-acting D2.5xL6xH80 ROHS/CCC/CE
W3090 Color code, Blue color 2.5A-5A/125V/250V, Fast-acting D3xL9xH59 ROHS/CCC/CE
W2560 Color code, Blue color 0.5A-3A/125V/250V, Fast-acting D2.5xL6xH50 ROHS/CCC/CE
W2560B Color code, Blue color 0.5A-3A/125V/250V, Fast-acting D2.5xL6xH80 ROHS/CCC/CE
2.4x7mm,F (62mA-10A/125V;12A-15A/32V;62mA-5A/250V); T 375mA-7A/125V
UL/CSA Approved