Metal film columnar resistors, also known as wafer resistors, columnar resistors, color ring mount resistors, pin less resistors, and lead less resistors, include: CSR series and CSRV series. There are three packaging sizes available: 010202040207. Metal film cylindrical resistors are located between patch resistors and direct insertion resistors, and are mainly suitable for high-order circuits with high current, high voltage impact resistance, and high safety requirements. Compared with direct insertion resistors, the removal of leads greatly reduces the parasitic inductance generated by the leads in high frequency. At the same time, they can solve the problem of accuracy and temperature coefficient cannot be improved in small resistance values of direct insertion resistors. Compared with sheet resistors, their larger surface area greatly improves their current and high voltage resistance performance, and they are significantly better than conventional patch resistors in terms of function, mechanical structure, electrical characteristics, or safety.
Metal film columnar resistors are superior to SMT resistors in terms of functionality, mechanical structure, electrical performance, and safety, and have lower noise compared to thick film chip resistors. Traditional resistors use spiral fine-tuning of resistance values, which can easily generate parasitic inductance, which is unacceptable in high-frequency or pulse applications. Wafer resistors do not have such problems. When designing high-frequency circuits, solving the problem of parasitic inductance is the best choice for wafer inductors. In addition, the volume of wafer resistors is very close to that of SMT resistors, maintaining their accuracy and providing higher stability, as well as a wider temperature range. Typical applications are in the fields of telecommunications equipment and industrial electronic equipment.
Application field:
Mainly used in medical instruments, measuring equipment, automotive related control boards, computer peripheral control boards, power converters, LCD control boards, mobile phones, laptops, motherboards, screens, toy charging control boards, various charger control boards, power supplies, various control boards, various electronic products, miniaturization and network impedance can significantly reduce circuit board area, electronic power equipment, UPS, electronic loads, high-frequency amplifiers, medical power supplies, electronic deceleration systems, electric vehicle fuel cells, and so on. Applied in precision instruments, wired and wireless communication network devices, and so on. Applied in LED constant current control, miniaturized modules, and hybrid circuits, among others.
Parameter range of wafer resistance:
Package size: 010202040207
Resistance accuracy range: ± 0.1% to ± 5%
Temperature coefficient range ± 10~100PPM/℃
Resistance power range: 1/8W to 1W
Resistance value range: 0.1 Ω~10M Ω
