BCcomponents
Product specification
PTC thermistors for
overload protection
FEATURES
APPLICATIONS
30 to 60 V, 145 V and
265 V (T
s
= 140
°C)
DESCRIPTION
These directly heated thermistors have
a positive temperature coefficient and
are primarily intended for overload
protection. They consist of a naked
disc or with two tinned brass or copper
clad steel leads and coated.
•
Different voltages to be chosen in
function of the application
•
Available in three mechanical
versions:F
– 2322 66. 4.... naked discs
– 2322 66. 5.... leaded and coated
– 2322 66. 6.... taped, on reel
(to diameter 12.5 mm)
•
Telecommunications
•
Automotive systems
•
Industrial electronics
•
Consumer electronics
•
Electronic data processing.
QUICK REFERENCE DATA
PARAMETER
Switch temperature; note 1
Maximum voltage; note 2:
2322 66. 4/5/6...1
2322 66. 4/5/6...2
2322 66. 4/5/6...3
Temperature range:
2322 66. 4/5/6...1
2322 66. 4/5/6...2
2322 66. 4/5/6...3
Climatic category:
66. 4/5/6...1
66. 4/5/6...2/3
Notes
•
Wide range of trip and non-trip
currents: from 17 mA up to 3 A for
the trip current
•
Wide range of resistance: from
0.3
Ω
up to 3 k
Ω
•
Small ratio between trip and
non-trip currents
(I
t
/I
nt
= 1.5 at 25
°
C)
•
High maximum inrush current
•
Excellent long term behaviour, also
in humidity
•
Leaded parts withstand mechanical
stresses and vibration
•
UL approved PTCs are guaranteed to
withstand severe test programmes
including:
– long-life cycle tests
(over 5000 trip cycles)
– long-life storage tests
(3000 hours at 250
°
C)
– electrical cycle tests at low
ambient temperatures (
−
40
°
C or
0
°
C)
– damp-heat and water immersion
tests
– overvoltage tests at up to 200% of
rated voltage.
VALUE
140
30 to 60
145
265
UNIT
°
C
V (DC)
V (RMS)
V (RMS)
−
40 to +85
0 to 70
0 to 70
40/125/56
25/125/56
°
C
°
C
°
C
1. 2322 660 4/5/6 ...3 types, have a 120
°
C switch temperature.
2. Rated voltages are respectively:
24 to 48 V (AC or DC)
120 V (AC or DC)
230 V (AC or DC).
•
UL file E148885 according to
XGPU2 standard UL1434.
MARKING
•
Clear marking: the grey lacquered
thermistors with a diameter of 8.5 to
20 mm are marked with BC,
R
25
value (example 4R6) on one side
and I
nt
, V
max
on the other.
2002 Sep 04
2
ELECTRICAL DATA AND ORDERING INFORMATION
2002 Sep 04
5
BCcomponents
PTC thermistors for
overload protection
Table 3
Electrical data and ordering information for
2322 66. 4/5/6...1;
max. voltage = 30 to 60 V (AC or DC); see note 1.
Preferred types in shaded cells.
I
t
(2)
MIN.
at 25
°
C
(mA)
145
195
270
405
480
615
705
810
915
1050
1245
1380
1755
2085
2655
3075
R
25
±
20%
(
Ω
)
50
25
13
6
5
3
2.5
1.9
1.7
1.3
1.1
0.9
0.7
0.5
0.4
0.3
V
MAX.
(V)
60
60
30
30
30
30
30
30
30
30
30
30
30
30
30
30
I
(4)
MAX.
at 25
°
C
(mA)
800
1200
1700
2500
3500
4500
5000
6000
7000
8000
10000
11000
13500
16000
20000
23000
I
res
MAX.
at V
max
and 25
°
C
(mA)
22
25
45
60
62
65
70
75
80
90
100
105
140
170
200
220
CATALOGUE NUMBERS
(3)
DISSIP.
FACTOR
(mW/K)
6.9
6.9
6.9
6.9
7.8
7.8
8.8
8.8
9.9
9.9
11.5
11.5
14.5
14.5
18.7
18.7
TYPICAL
∅
D
(mm)
4.5
4.5
4.5
4.5
6.5
6.5
8.0
8.0
10
10
12
12
16
16
20
20
BULK
2322 660 59491
2322 660 51311
2322 660 51811
2322 660 52711
2322 661 53211
2322 661 54111
2322 661 54711
2322 661 55411
2322 662 56111
2322 662 57011
2322 662 58311
2322 662 59211
2322 663 51121
2322 663 51321
2322 664 51721
2322 664 52021
TAPE ON REEL
2322 660 69491
2322 660 61311
2322 660 61811
2322 660 62711
2322 661 63211
2322 661 64111
2322 661 64711
2322 661 65411
2322 662 66111
2322 662 67011
2322 662 68311
2322 662 69211
I
nt
(2)
MAX.
at 25
°
C
(mA)
94
130
180
270
320
410
470
540
610
700
830
920
1 170
1390
1770
2050
Notes
−
−
−
−
30 to 60 V (T
s
= 140
°
C)
1. The thermistors are clamped at the seating plane.
2. For leadless types the values given for I
nt
and I
t
are only valid for thermistors mounted in accordance with
“IEC 60738”.
Thermistor dissipation depends
on mounting and can slightly affect the typical values.
3. For leadless types replace the 8
th
digit in the catalogue numbers by 4.
4. I
max
is the maximum overload current that may flow through the PTC when it passes from the low ohmic to the high ohmic state; see Figs 2 and 3.
Product specification