BC Components
Product specification
Varistors
FEATURES
•
Zinc oxide disc, epoxy coated
•
Straight leads
•
Straight leads with flange
(2322 592 and 593 series only)
•
Kinked leads.
APPLICATION
•
Suppression of transients.
DESCRIPTION
The varistors consist of a disc of low-β
ceramic material with two tinned solid
copper leads. They are coated with a
layer of ochre coloured epoxy, which
provides electrical, mechanical and
climatic protection. The
encapsulation is resistant to all
cleaning solvents in accordance with
“IEC 60068-2-45”.
MARKING
The varistors are marked with the
following information:
•
Maximum continuous RMS voltage
•
Series number (592, 593, 594 or
595)
•
Manufacturers logo
•
Date of manufacture.
ORDERING INFORMATION
The varistors are available in a
number of packaging options:
•
Bulk
•
On tape on reel
•
On tape in ammopack.
The basic ordering code for each
option is given in Tables 3, 4 and 5.
To complete the catalogue number
and to determine the required
operating parameters, see Table 7.
2322 592 to 2322 595
MOUNTING
The varistors are suitable for
processing on automatic insertion
and cutting and bending equipment.
Varistors with flanged leads provide
better positioning on printed-circuit
boards (PCB) and more accurate
control over component height. This
is important for hand mounting and
automatic insertion techniques;
see Fig.4.
Soldering
≤240 °C;
duration
≤5
s.
Resistance to heat
≤260 °C;
duration
≤5
s.
INFLAMMABILITY
The varistors are non-flammable.
QUICK REFERENCE DATA
PARAMETER
Maximum continuous voltage:
RMS
DC
Maximum non-repetitive transient current I
nrp
(8
×
20
µs)
Robustness of terminations
Drop test:
Height of fall
Detailed specification
Climatic category
1
based on CECC 42000
40/085/56
m
14 to 550
18 to 745
100 to 4500
10
V
V
A
N
VALUE
UNIT
1999 May 17
306
BC Components
Product specification
Varistors
MECHANICAL DATA
2322 592 to 2322 595
D
T
D
T
A
A
0
F
F
∅d
CCB175
L
L
∅d
CCB176
For dimensions, see Table 1.
For dimensions, see Table 1.
Fig.2
Fig.1 Outline of component with straight leads.
Outline of component with straight leads
and flange.
D
T
A
0
1 min.
F
0.3
L
∅d
MBD256
CCB177
1.4 to 1.6
For dimensions, see Table 1.
Dimensions in mm.
Fig.3 Outline of component with kinked leads.
Fig.4 Outlines of flanged leads.
1999 May 17
307
Power technology
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