PTC thermistors for overcurrent protection Leaded disks, uncoated, 380 to 1000 V Series/Type: B597** Date: September 2012 © EPCOS AG 2012. Reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without EPCOS' prior express consent is prohibited.
Overcurrent protection Leaded disks, uncoated, 380 V to 1000 V B750 ...
Overcurrent protection Leaded disks, uncoated, 380 V to 1000 V B750 ... B774 Electrical specifications and ordering codes Type IR IS mA mA ISmax tS (V = Vmax) (Vmax, ISmax) A s Ir RR (typ.) (V = Vmax) mA Ω Rmin Ω Vmax = 440 V, VR = 380 V, Tref = 120 °C, ∆RR = ±25 % B750 123 245 4.0 <6 4.0 25 13 B751 87 173 4.0 <4 3.5 50 26 B752 69 137 4.0 <4 3.5 80 42 B753 56 112 4.0 <3 3.0 120 63 B754 50 100 4.0 <3 3.0 150 68 B770 64 127 2.8 <4 3.5 70 45 B771 49 97 2.8 <3 2.5 120 76 B772 43 86 2.8 <3 2.
Overcurrent protection Leaded disks, uncoated, 380 V to 1000 V B750 ... B774 Reliability data Test Electrical endurance, cycling Electrical endurance, constant Damp heat Standard IEC 60738-1 Rapid change of temperature IEC 60738-1 Vibration IEC 60738-1 Shock IEC 60738-1 Climatic sequence IEC 60738-1 IEC 60738-1 IEC 60738-1 Please read Cautions and warnings and Important notes at the end of this document.
Overcurrent protection Leaded disks, uncoated, 380 V to 1000 V B750 ... B774 Characteristics (typical) PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage) PTC current IPTC versus PTC voltage VPTC (measured at 25 °C in still air) Switching time tS versus switching current IS (measured at 25 °C in still air) Rated current IR versus ambient temperature TA (measured in still air) Please read Cautions and warnings and Important notes at the end of this document.
Overcurrent protection Leaded disks, uncoated, 380 V to 1000 V B750 ... B774 Characteristics (typical) PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage) PTC current IPTC versus PTC voltage VPTC (measured at 25 °C in still air) Switching time tS versus switching current IS (measured at 25 °C in still air) Rated current IR versus ambient temperature TA (measured in still air) Please read Cautions and warnings and Important notes at the end of this document.
Overcurrent protection Leaded disks, uncoated, 380 V to 1000 V B750 ... B774 Characteristics (typical) PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage) PTC current IPTC versus PTC voltage VPTC (measured at 25 °C in still air) Switching time tS versus switching current IS (measured at 25 °C in still air) Rated current IR versus ambient temperature TA (measured in still air) Please read Cautions and warnings and Important notes at the end of this document.
Overcurrent protection Leaded disks, uncoated, 380 V to 1000 V B750 ... B774 Characteristics (typical) PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage) PTC current IPTC versus PTC voltage VPTC (measured at 25 °C in still air) Switching time tS versus switching current IS (measured at 25 °C in still air) Rated current IR versus ambient temperature TA (measured in still air) Please read Cautions and warnings and Important notes at the end of this document.
Overcurrent protection Leaded disks, uncoated, 380 V to 1000 V B750 ... B774 Cautions and warnings General EPCOS thermistors are designed for specific applications and should not be used for purposes not identified in our specifications, application notes and data books unless otherwise agreed with EPCOS during the design-in-phase. Ensure suitability of thermistor through reliability testing during the design-in phase. The thermistors should be evaluated taking into consideration worst-case conditions.
Overcurrent protection Leaded disks, uncoated, 380 V to 1000 V B750 ... B774 Mounting Electrode must not be scratched before/during/after the mounting process. Contacts and housing used for assembly with thermistor have to be clean before mounting. Especially grease or oil must be removed. When PTC thermistors are encapsulated with sealing material, the precautions given in chapter "Mounting instructions", "Sealing and potting" must be observed.
Overcurrent protection Leaded disks, uncoated, 380 V to 1000 V B750 ...
Overcurrent protection Leaded disks, uncoated, 380 V to 1000 V TC tE TR Tsense Top TPTC tR Tref TRmin tS Tsurf UCT V or Vel Vc(max) VF,max VRMS VBD Vins Vlink,max Vmax Vmax,dyn Vmeas Vmeas,max VR VPTC α ∆ δth τth λ B750 ...
Important notes The following applies to all products named in this publication: 1. Some parts of this publication contain statements about the suitability of our products for certain areas of application. These statements are based on our knowledge of typical requirements that are often placed on our products in the areas of application concerned.
