15P 120C AC Circuit PTC 100 Ohm 25% MZ21 PTC Thermal Protection

15P 120C AC Circuit PTC 100 Ohm 25% MZ21 PTC Thermal Protection

MZ21 PTC Thermistor 15P 100 OHM 25% 120C For Welding Machine Overcurrent Protection

I Description Of The MZ21 PTC Thermistor 15P 100 OHM 25% 120C

MZ21 Type Thermistor used for overcurrent protection in telecommunication and AC circuit.


II Overall Dimension Of The MZ21 PTC Thermistor 15P 100 OHM 25% 120C

Part No	DMAX	W±1.0	TMAX	Φd±0.05
MZ21- P101RNN	15.0	5.0	7.0	0.8

III Characteristics Curve Of The MZ21 PTC Thermistor 15P 100 OHM 25% 120C



IV Electrical Performance Of The MZ21 PTC Thermistor 15P 100 OHM 25% 120C

part no	rated resistance (25℃±1℃)	switch temperature (±7℃)	break down voltage Ac	non-operating current (at 40℃)	typical trip current	Operating ambient temperature range
MZ21-P101RNN	100Ω±25%	120℃	600 V	100 mA	200 mA	-10~+45℃

V Working Principle Of The MZ21 PTC Thermistor 15P 100 OHM 25% 120C

Connect the PTC thermistor in series in the load circuit. When the circuit is in normal working condition,the current through the PTC thermistor is less than the rated current. The PTC thermistor is in the normal state and the resistance is small, which will not affect the normality of the protected circuit. jobs. When the circuit fails, the current greatly exceeds the rated current (2 times of the normal working current), and the PTC thermistor suddenly heats up, showing a high resistance state, so that the circuit is in a relatively "off" state for protection purposes. When the fault is removed, the PTC thermistor automatically returns to a low impedance state and the circuit resumes normal operation.


VI Application Of The MZ21 PTC Thermistor 15P 100 OHM 25% 120C

Inverter welding machine is more and more popular in the world since technoloy required for manufacturing, however, good protection can assured inverter welding machine functioning well for long term. We can supply
all set of components for overcurrent protection / overvoltage protection. Below is lists we supplying our customers for your ref:

Varistor	07D361K 10D471K 10D681K 14D330K 14D151K 14D221K 14D391K 20D820K 20D102K 20D121K 20D121K 20D391K 20D471K 25D431K 25D751K 25D681K 25D821K 32D431K 25D751K 32D681K 32D821K
PTC Thermistor	126A 15P 16P 16P5R0M265 08M12RM265 05M120-180 19P MZ72-18ROM MZ11-13N13-20 MZ12-16P2R1H140,MZ12-16P4R7H140,MZ11-16P5R0H265,MZ11-16P6R0H265,MZ11-16P7R0H265,MZ11-16P10RH265,MZ11-16P12RH265,MZ72-18RM
NTC Thermistor	2.5D-20 5D-20 8D-20 47D-15 2.5D-15 47D-20
Fuse	Glass fuse/Ceramic fuse 3.6x10mm/5x20mm/6.35x31.8mm/10x38mm STP/SFP/BTC/BFC/BMT/BMF/PTU/PFU Micro Fuse MTS/MFS/NTS/NFS/TMS/FMS 8x4x8mm Surface Mount Fuse 6125 2410 SET/SEF/SFE/STE/SST/SSF

VII Manufacturing Process Of The MZ21 PTC Thermistor 15P 100 OHM 25% 120C

Weighing ⇒ Ball Milling ⇒ Presintering ⇒ Granulation ⇒ Forming ⇒ Sintering ⇒ Add electrode ⇒ Resistance
sorting ⇒ Pressure line ⇒ Package insulation ⇒ Assembly ⇒ Withstand voltage detection ⇒ Resistance
Inspection ⇒ Final inspection ⇒ Packaging ⇒ Put into warehouse .


VIII Other part number Of The MZ21 PTC Thermistor 15P 100 OHM 25% 120C

MZ11-10N12RH250,MZ11-10N18RH265,MZ11-10N22RH265,MZ11-10P15RH265,MZ11-10P39RH265
SPMZB-9H25RH265,SPMZB-9Z1R0H15,SPMZB-9Z1R2H15,SPMZB-9Z1R8H15
WMZ12A-10RM180,WMZ12A-10RM220,WMZ12A-12RM090,WMZ12A-12RM170,WMZ12A-15RM070,
WMZ12A-15RM130,WMZ12A-15RM145,WMZ12A-15RM160,WMZ12A-15RM200,WMZ12A-18RM150,
WMZ12A-20RM070,MZ212A-20RM085,MZ23-20RM100,MZ25-20RM145,WMZ12A-22RM100,
WMZ12A-22RM120,WMZ12A-22RM130,WMZ12A-22RM180,MZ25-25RM055,MZ25-25RM060,
WMZ12A-25RM065,MZ25-25RM085,MZ25-25RM100,MZ25-25RM120,WMZ12A-33RM110,WMZ12A-35RM060,
MZ23-35RM090,WMZ12A-39RM085,WMZ12A-39RM100,MZ23-40RM080,WMZ12A-47RM055,WMZ12A-47RM090,
WMZ12A-50RM060,MZ23-50RM070,MZ23-50RM075,WMZ12A-55RM060-MZ23-55RM070,WMZ12A-62RM050,
WMZ12A-62RM075,WMZ12A-68RM045,WMZ12A-68RM050,WMZ12A-68RM055,WMZ12A-68RM060,
WMZ12A-75RM045,WMZ12A-82RM040,WMZ12A-68RM060,WMZ12A-101M030,WMZ12A-101M035,
WMZ12A-101M040,WMZ12A-101M045,WMZ12A-101M050,WMZ12A-101M055,WMZ12A-121M030,
WMZ12A-121M035,WMZ12A-121M050,WMZ12A-151M025,WMZ12A-151M030,WMZ12A-151M035,
WMZ12A-151M040,WMZ12A-221M020,WMZ12A-221M025,WMZ12A-471M006,WMZ12A-681M005,
WMZ12A-102M004,WMZ12A-152M003,WMZ12A-222M002