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Glass-encapsulated sensors, standard type

Series / Type: Date:

NTC thermistors for temperature measurement
Glass-encapsulated sensors, standard type
Series / Type: Date:
B57540 March 2006
Temperature measurement Glass-encapsulated sensors
B57540 G540
Applications Automotive electronics Industrial electronics Home appliances Features Glass-encapsulated, heat-resistive and highly stable For temperature measurement up to 250 °C Fast response Small dimensions Leads: dumet wires (copper-clad FeNi) Options Leads: nickel-plated dumet wires. Alternative dimensions available on request. Delivery mode Bulk General technical data Climatic category Max. power Resistance tolerance Rated temperature Dissipation factor Thermal cooling time constant Heat capacity (IEC 60068-1) (at 25 °C)
Dimensional drawing
Dimensions in mm
(in air) (in air)
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Temperature measurement Glass-encapsulated sensors
B57540 G540
B25 / 100 K 3497 3497 4006 4006 4006 4085 4264 4581
Ordering code B57540G0502+00 B57540G0103+00 B57540G0203+00 B57540G0303+00 B57540G0503+00 B57540G0104+00 B57540G0234+00 B57540G0145+00
Storage in damp heat, steady state Rapid temperature cycling
No visible damage No visible damage
1) B100 / 200 2) B200 / 300
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Temperature measurement Glass-encapsulated sensors
B57540 G540
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Temperature measurement Glass-encapsulated sensors
B57540 G540
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B57540 G540
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B57540 G540
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B57540 G540
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B57540 G540
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B57540 G540
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B57540 G540
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B57540 G540
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B57540 G540
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B57540 G540
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Operation Use thermistors only within the specified operating temperature range. Use thermistors only within the specified voltage and current ranges (ICLs). Environmental conditions must not harm the thermistors. Use thermistors only in normal atmospheric conditions. Contact of NTC thermistors with any liquids and solvents should be prevented. It must be ensured that no water enters the NTC thermistor (e.g. through plug terminals). For measurement purposes (checking the specified resistance vs. temperature), the component must not be immersed in water but in suitable liquids (e.g. Galden). Avoid dewing and condensation. Be sure to provide an appropriate fail-safe function to prevent secondary product damage caused by malfunction (e.g. use VDR for limitation of overvoltage condition).
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Important notes
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