Self-protecting power resistors
PTC thermistors in plastic case
Series/Type: B5920*
Date: June 2008
© EPCOS AG 2008. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
Self-protecting power resistors
PTC thermistors in plastic case J201, J202, J204
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
Dimensions in mm
For high pulse currents and a high number of
operating cycles
Wiring diagram
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
Switching cycles at V
max
max
(charging of capacitor) N
(failure mode) N
Thermal cooling time constant (typical) τ
Heat capacity (typical) C
Operating temperature range (V = 0) T
Operating temperature range (V = V
) T
max
> 100000 cycles
c
> 10 cycles
f
th
op
op
150 s
2.0 J/K
40/+125 °C
0/+85 °C
th
Electrical specifications and ordering codes
1)
V
max
VDC
R
R
Ω
∆R
%
R
T
ref
°C
I
pulse,max
A
p
V
BD
Ordering code
V
550 20 30 135 50 > 700 B59201J0140B010
650 56 30 135 25 > 700 B59202J0135B010
800 100 25 130 20 > 900 B59204J0130B010
1) V
: Maximum permissible DC voltage directly applied to the PTC thermistor.
max
Important notes at the end of this document.
Page 2 of 7Please read Cautions and warnings and
Self-protecting power resistors
PTC thermistors in plastic case J201, J202, J204
Characteristics
Minimum resistance of PTC thermistors
versus applied voltage
PTC resistance R
PTC temperature T
PTC
versus
PTC
(measured at low signal voltage)
Switching time tSversus switching current I
(measured at 25 °C in still air)
Important notes at the end of this document.
Residual current in high ohmic state I
S
function of applied voltage V
(measured at 25 °C in still air)
Page 3 of 7Please read Cautions and warnings and
PTC
as
res
Loading...