MF51E

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NTC Thermistors

NTC & PTC Thermistors

High Precision NTC Thermistors for Extremely Accurate Temperature Measurement The MF51E NTC Thermistors were specially designed for use in electronic thermometers which require better than average accuracy. The extremely small size allows the thermistor to respond very quickly to tiny changes in temperature. The MF51E can be supplied un-calibrated with standard tolerances or calibrated and grouped according to R at 37°C±0.01% for extreme interchangeability so as to eliminate the need for other calibrations.

MF51E

Applications

• Electronic Thermometers
• Medical Equipment and Patient Monitoring

Characteristics

• Small Size and fast response and light weight
• Available tolerances: ±0.5%, ±1%, ±2%, ±3% and ±5%
• B Value tolerances: ±0.5%, ±1.0% and ±2.0%
• Resistance calibration available at 37°C ±0.01% (see table for details of grouping)
• Long-term Stability and Reliability
• Excellent Tolerance and Interchangeability
• Available in all popular resistance values
• Dissipation Constant ≥0.7mW/°C
• Time Constant of ≤3.2 seconds
• Rated Power: 3.5mW
• Operating Temperature Range -40°C to 100°C

Dimensions

DimensionD maxL 1 maxL 1
+/- 3
L 2
+/- 1
d
+/- 0.05
Normal size1.64.010030.2
1.6
Special sizeCustomer SpecifiedCustomer SpecifiedCustomer SpecifiedCustomer SpecifiedCustomer Specified

Main Techno Parameter

Part No.Nominal resistance
R 25ƒC
B Value
(R25/50ƒC)
Rated power
(mw)
Dissipation
(mW/ƒC)
Thermal time constant
(S)
Operating
temp.
(ƒC)
Range
(KΩ)
Tolerance
(%)
Nominal value
(K)
Tolerance
(%)
MF51E3270
MF51E3380
MF51E3470
MF51E3600
MF51E3950
MF51E4000
MF51E4050
MF51E4150
MF51E4300
MF51E4500
0.2-20
0.5-50
0.5-50
1-100
5-100
5-100
5-200
10-250
20-1000
20-1000
E+/-0.5

F+/-1

G+/-2

H+/-3

J+/-5

3270
3380
3470
3600
3950
4000
4050
4150
4300
4500
E+/-0.5

F+/-1

G+/-2

3.5≥ 0.7≤ 3.2-40ƒ – +100

Specification

Resistance Calibration at 37†C +/- 0.01†C of MF51E503F3950

GroupResistanceGroupResistanceGroupResistance
minmidmaxminmidmaxminmidmax
129.08529.11129.1371229.66829.69529.7212330.26430.29130.318
229.13829.16429.1891329.72229.74929.7752430.31930.34630.373
329.19029.21629.2421429.77629.80229.8282530.37430.40130.428
429.24329.26929.2941529.82929.85629.8832630.42930.45630.483
529.29529.32229.3481629.88429.91029.9362730.48430.51130.538
629.34929.37529.4001729.93729.96429.9912830.53930.56630.593
729.40129.42829.4541829.99230.01930.0452930.59430.62230.649
829.45529.48129.5071930.04630.07330.1003030.65030.67730.703
929.50829.53529.5612030.10130.12830.1543130.70430.73130.758
1029.56229.58829.6142130.15530.18230.2093230.75930.78530.811
1129.61529.64129.6672230.21030.23730.263