232266093034 [VISHAY]
PTC Thermistors, Overload Protection For Instrumentation; PTC热敏电阻，过载保护仪表
| 型号： | 232266093034 |
| 厂家： | 
VISHAY |
| 描述： | PTC Thermistors, Overload Protection For Instrumentation |
| 文件： | 总2页 (文件大小：53K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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)
TRIP
CURRENT
(RMS VALUE)
NOMINAL
RESISTANCE
MAXIMUM(1)
VOLTAGE
(V)
INSULATION
VOLTAGE
(V)
CATALOG
NUMBER
°
at 25 C
°
°
at 25 C
at 25 C
Ω
( )
(mA)
(mA)
10
20
1600 ±300
400 ±100
600
600
−
2322 660 93034
2322 661 93113
10
50
>1000
Note
1. These PTCs can handle maximum voltage without series resistance.
MECHANICAL DATA in millimeters
PHYSICAL DIMENSIONS in millimeters
D
T
Component outline.
H
L
F
d
MASS
(g)
CATALOG
NUMBER
MAX. MAX.
SPQ
PQ
D
T
30 ±3
20 ±3
5
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
15.5 ±1.5 3.1 ±0.5
10
H
F
L
∅d
For dimensions, see Physical dimensions table.
www.vishay.com
170
For technical questions contact: nlr.europe@vishay.com
Document Number: 29072
Revision: 10-Oct-03
2322 66. 93034_93113
PTC Thermistors, Overload Protection
For Instrumentation
Vishay BCcomponents
TYPICAL CONNECTION OF THE PTC
THERMISTOR FOR DIGITAL
MULTIMETER PROTECTION.
TYPICAL CURRENT/VOLTAGE
CHARACTERISTIC for 2322 660 93034.
2
10
I
RMS
PTC
thermistor
(mA)
Ω
input
10
V
A
INSTRUMENT
1
2
3
10
1
10
10
V
(V)
RMS
TYPICAL RESISTANCE/TEMPERATURE
CHARACTERISTIC for 2322 661 93113.
TYPICAL RESISTANCE/TEMPERATURE
CHARACTERISTIC for 2322 660 93034.
9
9
10
10
1.5 V (DC) max.
1.5 V (DC) max.
R
(Ω)
375 V
pulse
R
(Ω)
550 V
pulse
8
8
10
10
10
10
10
10
10
10
10
10
7
6
5
4
7
6
5
4
3
2
3
2
10
10
10
10
0
50
100
150
200
0
50
100
150
200
250
T (°C)
T (°C)
Document Number: 29072
Revision: 10-Oct-03
For technical questions contact: nlr.europe@vishay.com
www.vishay.com
171
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