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NTC Thermistors

NTC & PTC Thermistors

Pearl-Shaped Precision NTC Thermistor for Temperature Measurement The MF52 series of Pearl-Shaped NTC Thermistors is ethoxyline resin coated. The small size is made possible by new materials and manufacturing methods which provide the benefit of close tolerances and fast response. MF52 thermistors are available with 5 lead styles in standard or custom lengths.

MF52

Applications

Heating, Ventilation & Air Conditioning
• Temperature Regulation and Measurement
• Electronic Thermometers
• Liquid Level Sensing
• Automotive Electronics
• Medical Equipment and Apparatus
• Battery Packs and Portable Electronics

Characteristics

• Small Size and fast response
• Available tolerances: ±1%, ±2%, ±3%, ±5% and ±10%
• Long-term Stability and Reliability
• Excellent Tolerance and Interchangeability
• Available in all popular resistance values
• Dissipation Constant ≥2.0mW/°C
• Time Constant of ≤7 seconds in still air
• Available in custom probes
• UL Listed E24099, CQC 07001019009

Dimensions (mm)

A: Tin. Ag. nickel plated cu wire

Code D
max
L1
max
L2
min
d
+/- 0.05
F
+/- 0.5
A1 2.5 4.0 25 0.3 1.7
A2 3 4.5 25 0.45 2.2

B: Enamelled cu wire

Code D
max
L1
max
L2
min
L3
+/- 1
d
+/- 0.05
B1 2 3.5 Customer
Specified
3 0.2
B2 3 4 Customer
Specified
3 0.3

C: High temp fluorin-plastic wire

Code D
max
L1
max
L2
min
L3+/-
1
d
+/- 0.05
C1 3 7.5 Customer
Specified
5 0.26
C2 4 7.5 Customer
Specified
5 0.32

D: PVC wire

Code D
max
L1
max
L2
min
L3+/-1 d
+/- 0.05
D1 3 7.5 Customer
Specified
5 0.26
D2 4 7.5 Customer
Specified
5 0.32

E: Lead and head according to specification

Code D
max
L1
max
L2
min
L3+/-
1
d
+/- 0.05
E1 Customer
Specified
Customer
Specified
Customer
Specified
5 Customer
Specified
E2 Customer
Specified
Customer
Specified
Customer
Specified
5 Customer
Specified

F: Tinned Lead-Frame Style

Code D
max
L1
max
L2
+/- 1.5
d

max

F
+/-
0.5
Tmax
F 3.8 9.5 17 0.5 2.5 3.5

Specification

Main Techno-Parameter

Part
No.
Rated
Resistance
R25
(KΩ)
B
Value
(25/50ƒC)
(K)
Rated
Power(mw)
Dissi.
Coef.
(mW/ƒC)
Thermal
time Constant(S)
Operating
Temp.(ƒC)
MF523100
MF523270
MF523380
MF523470
MF523600
MF523950
MF524000
MF524050
MF524150
MF524300
MF524500
0.1-20
0.2-20
0.5-50
0.5-50
1-100
5-100
5-100
5-200
10-250
20-1000
20-1000
3100
3270
3380
3470
3600
3950
4000
4050
4150
4300
4500

50

2.0

In Still Air


7

In Still Air

-55ƒ
– +125ƒC

Remark:
* B Value (25/50C) error is ±1% for components with rated resistance tolerance of ±1% and ±2% for all others.
Notice:
* The two ends of the lead wire cannot endure too big pull because of the small size and soldered spot in series of MF52.
* Solder at least 5mm from the bottom of wire.