PTC thermistors as
inrush current limiters
PTC thermistors in phenolic resin plastic case
Series/Type: B5910*
Date: August 2012
EPCOS AG 2015. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
EPCOS AG is a TDK Group Company.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, type designation and
date code YYWW 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 > 100 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.