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

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

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:

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