• 120 DEG 24MM PTC Overcurrent Protection WMZ12A 80mA PTC 100 Thermistor
  • 120 DEG 24MM PTC Overcurrent Protection WMZ12A 80mA PTC 100 Thermistor
  • 120 DEG 24MM PTC Overcurrent Protection WMZ12A 80mA PTC 100 Thermistor
  • 120 DEG 24MM PTC Overcurrent Protection WMZ12A 80mA PTC 100 Thermistor
120 DEG 24MM PTC Overcurrent Protection WMZ12A 80mA PTC 100 Thermistor

120 DEG 24MM PTC Overcurrent Protection WMZ12A 80mA PTC 100 Thermistor

Product Details:

Place of Origin: Dongguan,Guangdong,China
Brand Name: AMPFORT
Certification: ROHS,UL
Model Number: WMZ12A

Payment & Shipping Terms:

Minimum Order Quantity: 10000 Pieces
Price: TBA
Packaging Details: Bulk
Delivery Time: 2 Weeks
Payment Terms: T/T,Paypal
Supply Ability: 9,000,000 Pieces Per Month
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Detail Information

Product Name: MZ11A Filament Preheating PTC Thermistor WMZ12A R25(Ω): 100~1500 OHM
Swtich Temp Range: 50~120C Dmax: 4.5~24mm
High Light:

120 DEG ptc overcurrent protection

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24MM ptc overcurrent protection

,

WMZ12A 80mA ptc 100 thermistor

Product Description

 
MZ11A Filament Preheating PTC Thermistor WMZ12A For Telecom Over Current Protection
 
I General Of The MZ11A Filament Preheating PTC Thermistor WMZ12A 
 
WMZ12A(Ⅰ/Ⅱ)Series is the new generation of components for over current protection. Its safety characteristics passed the
testing and meet the requirements of UL1434. It can do protection and recovery automatically and repetitively without contacting
spot, noise and spark. WMZ12A(Ⅰ/Ⅱ)Series PTC Thermistor is designed specially for over current protection of the Ballast / CFL /
Adaptor / Charger / Watt-hour Meter / Multimeter / Telecom / Micromotor etc, as show as the example of application. When the
circuit protected is at normal state, current through the PTC thermistor will be lower than its Max. Non-operating Current (IN).
At this time Rt is at low-resistance state, and it won’t affect the normal work of the circuit protected. While abnormal things (such
as over current ) happen, the current will be much higher than its Trip Current (IT), and then Rt will change into high-resistance state
very quickly. So the circuit protected will be at open state and non-damaged. After the abnormal things disappear and the
temperature & the current recover to normal state, Rt will return to low-resistance state automatically and the circuit protected will
recover to normal operating state.
120 DEG 24MM PTC Overcurrent Protection WMZ12A 80mA PTC 100 Thermistor 0
Rt’s current characteristics is the most important thing to be considered when make a choice of WMZ12A(Ⅰ/Ⅱ)series. Its Max.
Non-operating Current shall be reasonably higher than rated operating current through the circuit protected and the criterion is
that Rt can respond in time and won’t trip by mistake. Furthermore, another thing must be especially noticed is: Rt’s Max. Operating /
Non-operating characteristics is closely correlative with the ambient temperature. IT & IN will decrease while the ambient temperature
increases, as show as Figure II.
 
 
II Features Of The MZ11A Filament Preheating PTC Thermistor WMZ12A
 

• Non-contact circuit and component protection
• Automatically limit overcurrent
• Automatic recovery after troubleshooting
• No noise and no sparks when working
• Reliable and easy to use
 
 

III EXAMPLE OF APPLICATION Of The MZ11A Filament Preheating PTC Thermistor WMZ12A

 
120 DEG 24MM PTC Overcurrent Protection WMZ12A 80mA PTC 100 Thermistor 1 

120 DEG 24MM PTC Overcurrent Protection WMZ12A 80mA PTC 100 Thermistor 2

 
 
IV Application principle Of The MZ11A Filament Preheating PTC Thermistor WMZ12A


Connect the WMZ12A PTC thermistor in series with the power circuit. When the circuit is in a normal state, the current flowing through the PTC is less than the rated current, the PTC is in a normal state, and the resistance is small, which does not affect the normal operation of the protected circuit such as the electronic ballast (energy-saving lamp, transformer, multimeter). When the circuit current greatly exceeds the rated current, the PTC suddenly heats up and the resistance suddenly increases to a high impedance state, thereby limiting or blocking the current and protecting the circuit from damage. After the current and current return to normal, the PTC also automatically returns to the low resistance state, and the circuit resumes normal operation.
WMZ12A PTC thermistor in the field of overcurrent protection applications such as electronic ballasts (energy-saving lamps, transformers, multimeters), Yaxun is the first to introduce the WMZ12 model featuring high withstand voltage (V ≥ 300V AC). 

 
 
V Main technical parameters Of The MZ11A Filament Preheating PTC Thermistor WMZ12A
 

WMZ12A (I) is mainly used for overcurrent protection such as charger, adapter (primary coil), electric
energy meter, digital multimeter, etc.

model MAX Non OperaTIng Current at 25℃ In (mA) Trip Current at 25℃ It (mA) Rated zero power resistance value R 25 (Ω) Maximum operating current I max (A) Dimensions(mm)
Dmax Tmax d±0.05 F±1
WMZ12A-70LB15RM080 80mA at 40℃±2℃ 160 15±20% 1.0 8 5 0.6 5
WMZ12A-70LB12RM090 90mA at 40℃±2℃ 180 12±20%
WMZ12A-70LB10RM100 100mA at 40℃±2℃ 200 10±20%
WMZ12A-75S222RM005 5 10 2200±20% 0.2 4 4.5 0.5 5
WMZ12A-75S152RM006 6 12 1500±20%
WMZ12A-75S102RM008 8 16 1000±20%
WMZ12A-75S681RM010 10 20 680±20%
WMZ12A-75S471RM012 12 24 470±20% 0.3
WMZ12A-75S331RM015 15 30 330±20%
WMZ12A-75S221RM018 18 36 220±20%
WMZ12A-75S151RM020 20 40 150±20% 0.4
WMZ12A-75S101RM025 25 50 100±20%
WMZ12A-75A471RM014 14 28 470±20% 0.4 6.5 4.5 0.6 5
WMZ12A-75A331RM017 17 34 330±20%
WMZ12A-75A221RM020 20 40 220±20% 0.5
WMZ12A-75A151RM024 24 48 150±20%
WMZ12A-75A121RM026 26 52 121 ±20%
WMZ12A-75A101RM028 28 56 100±20% 0.6
WMZ12A-75A68RM032 32 64 68±20%
WMZ12A-75A47RM040 40 80 47±20%
WMZ12A-75B331RM020 20 40 330±20% 0.8 8 4.5 0.6 5
WMZ12A-75B221RM025 25 50 220±20%
WMZ12A-75B151RM030 30 60 150±20%
WMZ12A-75B101RM035 35 70 100±20% 1.0
WMZ12A-75B82RM040 40 80 82±20%
WMZ12A-75LB82RM035 35mA at 60℃±2℃ 90mA at 25℃±2℃ 82±20% 1.0 9 4.5 0.6 5
WMZ12A-75LB68RM040 40mA at 60℃±2℃ 100mA at 25℃±2℃ 68±20% 1.2
WMZ12A-75LB47RM045 45mA at 60℃±2℃ 110mA at 25℃±2℃ 47±20%
WMZ12A-75LB33RM050 50mA at 60℃±2℃ 125mA at 25℃±2℃ 33±20%

The WMZ12A PTC thermistor is mainly used for overcurrent protection of [transformer (adapter) / primary coil / charger / digital multimeter / smart meter / micro motor / transistor]. Directly connected in series in the load circuit, when the line is in an abnormal situation, it can automatically limit the over current or block the current, and then return to the original state after the fault is removed, commonly known as "10,000 times fuse" 

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