Ceramic transient voltage suppressors
SMD disk varistors standard series
Series/Type:
Date:
August 2011
© EPCOS AG 2011. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
SMD disk varistors (CU varistors)
Standard series
EPCOS type designation system for SMD disk varistor standard series
CU
Construction:
CU Encapsulated chip
Case sizes:
3225 32 x 25
4032 40 x 32
Varistor voltage tolerance:
K
±10%
4032
K
275
G2
Maximum RMS operating voltage (V
RMS
):
275 275 V
Taping mode:
G2 Taped, 330-mm reel
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 2 of 35
SMD disk varistors (CU varistors)
Standard series
Features
Electrical equivalents to leaded types SIOV-S05/S07
Operating voltage up to 300 V
RMS
SMD plastic package
RoHS-compatible
Suitable for lead-free soldering
UL approved
CSA approved (types with voltages higher than 130 V
RMS
)
PSpice models available
Applications
Overvoltage protection and transient suppression in control electronics, detectors and
sensors, touch screens, plug-in cards, remote controls
Design
Cylindrical varistor element, encapsulated.
Encapsulation: thermoplastic, flame-retardant to UL 94 V-0.
Termination: tinned copper alloy, suitable for lead-free wave and reflow soldering, and
compatible with tin/lead solder.
V/I characteristics and derating curves
V/I and derating curves are attached to the data sheet. The curves are sorted by V
RMS
and
then by case size, which is included in the type designation.
General technical data
Maximum RMS operating voltage
Maximum DC operating voltage
Maximum surge current
Maximum energy absorption
Maximum power dissipation
Maximum clamping voltage
Operating temperature
Storage temperature
Temperature derating
Climatic category:
40/+85
°C
V
RMS,max
V
DC,max
I
surge,max
W
max
P
diss,max
V
clamp,max
T
op
LCT/UCT
11 ... 300
14 ... 385
100 ... 1200
300 ... 23000
10 ... 250
36 ... 775
40/+85
40/+125
V
V
A
mJ
mW
V
°C
°C
(8/20 µs)
(2 ms)
(8/20 µs)
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Page 3 of 35
Microcontroller MCU
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