PTC thermistors as
inrush current limiters
PTC thermistors in phenolic resin plastic case
Series/Type: B5910*
Date: July 2011
EPCOS AG 2011. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.Inrush current limiters
PTC thermistors in phenolic resin plastic case
Applications Dimensional drawing
Inrush current limiter (charging resistor) for
smoothing and DC link capacitors
To replace high-power fixed resistors for
capacitor charging
Features
Self-protecting in case of malfunction of
short-circuit relay or internal short circuit of
capacitor
Encased thermistor disk with clamp contacts
for high reliability
For high pulse currents and a high number of
operating cycles
Inrush current limiters are not damaged
when directly connected to V even without
max
Dimensions in mm
additional current limitation
Flame-retardant plastic case
Case material UL-listed
Sn-plated lead-free solder pins
Manufacturer's logo and type designation
stamped on in white
RoHS-compatible
Delivery mode
Packed in carton box
General technical data
Operating cycles at V (charging of capacitor) N > 100000 cycles
max c
Switching cycles at V (failure mode) N > 10 cycles
max f
Thermal cooling time constant (typical) 150 s
th
Heat capacity (typical) C 2.3 J/K
th
Operating temperature range (V = 0) T 40/+125 C
op
Operating temperature range (V = V ) T 20/+85 C
max op
Electrical specifications and ordering codes
V V R R T
Type max link,max R R ref Ordering code
(typ.)
V AC V DC % C
J105 260 360 22 25 130 B59105J0130A020
J107 440 620 56 25 130 B59107J0130A020
J109 560 800 100 25 130 B59109J0130A020
Please read Cautions and warnings and Page 2 of 10
Important notes at the end of this document.