MF72

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NTC & PTC Thermistors

Power NTC Thermistor

The MF72 series Power NTC Thermistors provide inrush current suppression for sensitive electronics. Connecting a MF72 in series with the power source will limit the current surges typically created at turn on. Once the circuit is energized the resistance of the MF72 will decrease rapidly to a very low value, power consumption can be ignored and there will be no effect on normal operating current. Using the MF72 Power NTC Thermistor is a most cost-effective way to curb surge current and protect sensitive electronics from damage.

MF72

Applications

Can be installed into the power circuits of:
• Power supplies and inverters
• Uninterruptible Power Supplies
• Energy saving lamps
• Electronic Ballasts
• Filament Protection of various types of lamps
• Some types of heaters

Characteristics

• Small Size and fast response
• High Power handling capability
• Fast response to surge current
• High material constant (B value)
• Low residual resistance
• Wide operating temperature range -55 to +200C
• R25 allowable tolerance is ±20%
• Long-term Stability and Reliability
• UL 1434 File# E241319
• CQC File# 04001010556

Specification

Dimensions

Part No./Dim (mm)/SymDmaxTmaxd
+/- 0.05Fig. I/II
F1
+/-1Fig. I/II
F2
+/-1.5Fig. II/III
Straight Lead WireCurved Lead Wire
L1min.L1minL2+/-2
MF72- D5750.6/0.455/2.5325 *17/55
MF72- D7950.6532517/55
MF72- D9115.50.8/0.67.5/55/32517/58
MF72- D11135.50.87.5/55/32517/58
MF72- D1315.560.87.552517/55
MF72- D1517.560.810/7.552517/55
MF72- D2022.571.010/7.5/25 *//
MF72- D2527.581.010/25 *//
RemarkL1min., 17/5   17 indicates the long bent lead wire, 5 indicates the short bent lead wire (Fig. III)

Illustration: In general, the long bent lead wire is used, see figure II

Add suffix “L” + Fig. # to specify optional leads.

* Straight Leads Are Standard

Main Techno Parameter

Part NO.R25
(Ω)
Max.
Steady State Current
(A)
Approx.R of Max.Cur
(Ω)
Dissi,Coef.
(mW/ƒC)
Thermal time Constant
(S)
Max. Load
Capacitance
in uF
UL RecognizedOperating Temp.
(ƒC)
120 VAC240 VAC
MF72-005D5510.35362018847-55 to +200
MF72-010D5100.70.77162018847
MF72-060D5600.31.87861818847
MF72-200D52000.118.706188822
MF72-005D7520.283103022456
MF72-008D7810.53992822456
MF72-010D71010.61692722456
MF72-012D71210.81692722456
MF72-016D7160.71.00392722456
MF72-022D7220.61.10892722456
MF72-033D7330.51.485102818847
MF72-200D72000.211.65112818847
MF72-003D9340.120113527268
MF72-004D9430.190113527268
MF72-005D9530.210113427268
MF72-006D9620.315113427268
MF72-008D9820.4001132400100
MF72-010D91020.4581132400100
MF72-012D91210.6521132400100
MF72-016D91610.8021131400100
MF72-020D92010.8641130600150
MF72-022D92210.9501130600150
MF72-030D93011.0221130600150
MF72-033D93311.1241130600150
MF72-050D95011.2521130600150
MF72-060D9600.81.5021130600150
MF72-080D9800.82.010113027268
MF72-120D91200.83.015113027268
MF72-200D92000.55.007113218847
MF72-400D94000.230.30113218847
MF72-002.5D112.550.0951343600150
MF72-003D11350.1001343600150
MF72-004D11440.1501344600150
MF72-005D11540.1561345600150
MF72-006D11630.2401345800220
MF72-008D11830.2551447800220
MF72-010D111030.2751447800220
MF72-012D111220.4621448800220
MF72-016D111620.4701450800220
MF72-020D112020.5121552800220
MF72-022D112220.5631552800220
MF72-030D11301.50.6671552800220 √
MF72-033D11331.50.7341552800220
MF72-050D11501.51.0211552800220
MF72-060D11601.51.2151552800220
MF72-080D11801.21.6561552600150
MF72-001.3D131.370.0621360880220
MF72-001.5D131.570.0731360880220
MF72-002.5D132.560.0881360880220
MF72-003D13360.0921460880220
MF72-004D13450.1201567880220
MF72-005D13550.1251568880220
MF72-006D13640.1701565880220
MF72-007D13740.18815651320330
MF72-008D13840.19415601320330
MF72-010D131040.20615651320330
MF72-012D131230.31616651320330
MF72-015D131530.33516601320330
MF72-016D131630.33816601320330
MF72-020D132030.37216651320330
MF72-030D13302.50.51716651320330
MF72-047D134720.8101765880220
MF72-120D131201.22.1241665880220
MF72-001.3D151.380.04818681320330
MF72-001.5D151.580.05219691320330
MF72-003D15370.07518761320330
MF72-005D15560.11220761880470
MF72-006D15650.15520801880470
MF72-007D15750.17320801880470
MF72-008D15850.17820801880470
MF72-010D151050.18020751880470
MF72-012D151240.25020751880470
MF72-015D151540.26821851880470
MF72-016D151640.27621701880470
MF72-020D152040.28817861880470
MF72-030D15303.50.43818751320330
MF72-047D154730.68021861320330
MF72-120D151201.81.65222871320330
MF72-000.7D200.7110.01825891880470
MF72-001.3D201.390.03724881880470
MF72-003D20380.05524881880470
MF72-005D20570.08723872240560
MF72-006D20660.113251032240560
MF72-008D20860.142251052240560
MF72-010D201060.162241022240560
MF72-012D201250.195241002720680
MF72-016D201650.212251002720680
MF72-00.7D250.7120.014301202240560
MF72-001.5D251.5100.027301212240560
MF72-003D25390.044321242240560
MF72-005D25580.070321252720680
MF72-008D25870.114331252720680
MF72-010D251070.130321252720680
MF72-012D251260.156321263280820
MF72-016D251660.160351263280820

Note: Unless otherwise specified, the allowable tolerance of R25 is +/- 20%
Specifications may change without notice.