70 Siemens Matsushita Components
265 V, 135 °C
Applications
●Overcurrent and short-circuit protection
●For enhanced rated current requirements
Features
●Coated thermistor disk
●Surge-proof
●Manufacturer’s logo and type designation
stamped on in white
●VDE approval (exception: C811)
Options
●Leadless disks and leaded disks without
coating available upon request
●Thermistors with diameter
b
≤ 11,0 mm
are also available on tape
Max. operating voltage (
T
A = 60 °C)
V
max
Rated voltage
V
N
Switching cycles (typ.)
N
Reference temperature (typ.)
T
Ref
Resistance tolerance ∆
R
N
Operating temperature range (
V
= 0)
T
op
(
V
=
V
max)
T
op
265
230
100
135
± 25 %
– 40/+ 125
0/60
V
V
°C
°C
°C
Type
I
N
mA
I
S
mA
I
Smax
(
V
=
V
max)
A
t
S
(V
max,
I
Smax)
s
I
r (typ.)
(
V
=
V
max)
mA
R
N
Ω
R
min
Ω
Ordering code
C 811 730 1450 10,0 < 10 25 2,6 1,8 B59811-C135-A70
C 831 470 970 7,0 < 8 20 3,7 2,6 B59831-C135-A70
C 841 350 700 4,1 < 8 15 6 4,3 B59841-C135-A70
C 851 215 445 2,2 < 8 13 10 7,1 B59851-C135-A70
C 861 150 320 1,5 < 8 10 15 10,6 B59861-C135-A70
C 871 108 225 1,0 < 8 9 25 17,8 B59871-C135-A70
C 881 60 120 0,4 < 8 6 70 49,8 B59881-C135-A70
C 891 30 65 0,2 < 8 5 150 107 B59891-C135-A70
Dimensions (mm)
Type
b
max ∅
dh
max
C 811 26,0 0,8 29,5
C 831 22,0 0,6 25,5
C 841 17,5 0,6 21,0
C 851 13,5 0,6 17,0
C 861 11,0 0,6 14,5
C 871 9,0 0,6 12,5
C 881 6,5 0,6 10,0
C 891 4,0 0,5 7,5
TPT0648-4
b
5 max.
35 min.
h
5ø
d
Overload Protection
Disks B598*1
C 811 … C 891
Siemens Matsushita Components 71
Characteristics (typical)
PTC resistance
R
PTC versus
PTC temperature
T
PTC
(measured at low signal voltage)
PTC current
I
PTC versus PTC voltage
V
PTC
(measured at 25 °C in still air)
Switching time
t
S versus switching current
I
S
(measured at 25 °C in still air) Rated current
I
Nversus ambient temperature
T
A
(measured in still air)
B598*1
C 811 … C 891
72 Siemens Matsushita Components
Characteristics (typical)
PTC resistance
R
PTC versus
PTC temperature
T
PTC
(measured at low signal voltage)
PTC current
I
PTC versus PTC voltage
V
PTC
(measured at 25 °C in still air)
Switching time
t
S versus switching current
I
S
(measured at 25 °C in still air) Rated current
I
Nversus ambient temperature
T
A
(measured in still air)
B598*1
C 811 … C 891
