232266093034 Datasheet, PDF (1/2 Pages) Vishay Siliconix – PTC Thermistors, Overload Protection For Instrumentation

2322 66. 93034_93113
Vishay BCcomponents
PTC Thermistors, Overload Protection
For Instrumentation
FEATURES AND BENEFITS
• Fast response time for rapid protection
• Automatic resetting once overload is removed
• No contacts to burn out
• No thermal runaway
• Operates on DC or AC voltage
• Small size and rugged construction; see Component
Outline drawing.
DESCRIPTION
Test and measuring instruments, such as oscilloscopes and
digital multimeters, can be easily damaged
if excessive voltages are applied across their input terminals.
Simple and effective overload protection can be provided by
connecting a high-voltage PTC thermistor in series with the
instrument; see Typical connection of the PTC thermistor for
digital multimeter protection drawing. Under normal
conditions, the resistance of the PTC thermistor is low, so the
test voltage will be measured by the instrument. Under an
overload condition, the PTC thermistor will switch to its
high-resistance state, absorbing the overload current and
protecting the instrument. When the overload is removed,
the PTC thermistor will return to its low-resistance state,
ready to resume its protective function.
ELECTRICAL DATA AND ORDERING INFORMATION
NON-TRIP
CURRENT
(RMS VALUE)
at 25 °C
(mA)
TRIP
CURRENT
(RMS VALUE)
at 25 °C
(mA)
NOMINAL
RESISTANCE
at 25 °C
(Ω)
MAXIMUM⁽¹⁾
VOLTAGE
(V)
10
20
1600 ±300
600
10
50
400 ±100
600
Note
1. These PTCs can handle maximum voltage without series resistance.
INSULATION
VOLTAGE
(V)
−
>1 000
CATALOG
NUMBER
2322 660 93034
2322 661 93113
MECHANICAL DATA in millimeters
Component outline.
D
T
PHYSICAL DIMENSIONS in millimeters
H
L
D
T
MAX. MAX.
F
d
MASS
(g)
SPQ
PQ
CATALOG
NUMBER
30 ±3 20 ±3 5
15.5 ±1.5 3.1 ±0.5 10
4.5 5.08 0.6 ≈0.47 500 10000 2322 660 93034
6.5 8.12 0.8 ≈1.82 500 10000 2322 661 93113
H
F
L
∅d
CCB832
For dimensions, see Physical dimensions table.
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170
For technical questions contact: [e-mail]
Document Number: 29072
Revision: 10-Oct-03