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Part: 232266093034

Category:

Description: PTC Thermistors, Overload Protection For Instrumentation

Company: Vishay Intertechnology

Datasheet: Download 232266093034 datasheet     File size : 233 kB

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Datasheet text preview:
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) 10 10 Note 1. These PTCs can handle maximum voltage without series resistance. TRIP CURRENT (RMS VALUE) at 25 °C (mA) 20 50 NOMINAL RESISTANCE at 25 °C () 1 600 ±300 400 ±100 MAXIMUM(1) VOLTAGE (V) 600 600 INSULATION VOLTAGE (V) - >1000 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. 5 10 4.5 6.5 F d MASS SPQ (g) 0.47 1.82 500 500 PQ CATALOG NUMBER

30 ±3

20 ±3

5.08 8.12

0.6 0.8

10 000 2322 660 93034 10 000 2322 661 93113

15.5 ±1.5 3.1 ±0.5

H L

F

d
CCB832

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
TYPICAL CONNECTION OF THE PTC THERMISTOR FOR DIGITAL MULTIMETER PROTECTION.

Vishay BCcomponents

TYPICAL CURRENT/VOLTAGE CHARACTERISTIC for 2322 660 93034.
10 2
MLD319

PTC thermistor input V A INSTRUMENT

I RMS (mA)

10

1

MSB392

1

10

10 2

V RMS (V)

10 3

TYPICAL RESISTANCE/TEMPERATURE CHARACTERISTIC for 2322 660 93034.
109 R () 1.5 V (DC) max. 550 Vpulse
CCB915

TYPICAL RESISTANCE/TEMPERATURE CHARACTERISTIC for 2322 661 93113.
109 R () 1.5 V (DC) max. 375 Vpulse
CCB916

108

108

107

107

106

106

105

105

104

104

103

103

102 0 50 100 150 200 T (°C) 250

102 0 50 100 150 T (°C) 200

Document Number: 29072 Revision: 10-Oct-03

For technical questions contact: nlr.europe@vishay.com

www.vishay.com 171




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