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04M2001SPB3

更新时间： 2022-12-14 14:24:38

品牌	Logo	应用领域
威世 - VISHAY		/
页数	文件大小	规格书
4页	96K
描述
NTC Thermistors,Coated

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04M2001SPB3 数据手册

M, C, T

NTC Thermistors, Coated

Vishay Dale

POINT MATCH TOLERANCE

The standard leaded thermistors are calibrated and tested at 25°C to a tolerance of ± 5% or ± 10%; however, tighter tolerance,

point matched thermistors are readily available as are special point match temperatures to fit your application.

Since these thermistors have only one controlled point of reference ( the point match temperature ), the resistance at other

temperatures is given by the "Resistance VS Temperature Conversion Tables" for the appropriate material curve. The resistance

value at any temperature is the ratio factor times the resistance at 25°C.

Example: 1M1002-5, +70°C resistance = (Resistance factor for curve 1 at 70°C is .1990) X (10000 ohm resistance at 25°C)

= 1990 ohms.

The tolerance of the resistance at any temperature is described by Figure 2.

FIGURE 2

POINT MATCH TOLERANCES VS. TEMPERATURE

Point match resistance tolerances at temperatures other than

MAX. R VS. T

25ºC are not the same as the calibration temperature. This

difference is presented in Figure 2.

MIN. R VS. T

The tolerance at any given temperature is the point match

NOMINAL R VS. T

tolerance + the MT ±% (Manufacturing Tolerance).

The MT ±% may be obtained from the R vs. T Conversion

tables and is added to the point match temperature, i.e., ±

1% Tol. at 25ºC + ± 2.6% at -30ºC for Curve 1 equals a total

tolerance of ± 3.6% at -30ºC.

PIVOT POINT

(CALIBRATION TEMPERATURE)

25°C

TEMPERATURE

COMPUTER AIDS FOR THERMISTOR SELECTION

A spreadsheet is available for the Vishay Thermistor Materials that calculates Beta, Steinhart-Hart Equation Constants A, B,

and C, the resistance at any temperature based upon the Steinhart constants or Beta, the temperature equivalent of the

resistance reading, and resistance temperature coefficients.

This spread sheet will also calculate the total resistance tolerance of any point matched thermistor for temperatures in 10ºC

increments, and the resistance tolerance at any temperature within the calibrated range of curve tracking thermistors. Please

contact factory if interested in this Excel™ spreadsheet.

Document Number: 33003

Revision 22-Sep-04

www.vishay.com

For technical questions, contact thermistor1@vishay.com

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