Linear Positive Temperature Coefficient PTC NTC Thermistor 650R 80C For Overcurrent Overheat Protection

Linear Positive Temperature Coefficient PTC NTC Thermistor 650R 80C For Overcurrent Overheat Protection

Product Details:

Place of Origin: DONGGUAN,GUANGDONG,CHINA
Brand Name: AMPFORT
Certification: ROHS
Model Number: WMZ12A-75S651RH

Payment & Shipping Terms:

Minimum Order Quantity: 20000PCS
Price: 0.04~0.06 USD/PC
Packaging Details: Bulk or tape
Delivery Time: 10 workdays
Payment Terms: T/T IN ADVANCE
Supply Ability: 5000KKPCS Per month
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Detail Information

Name: PTC Thermistor Thickness: 5.0mm Max
Coating: Silicone Green Marking: MZ3
R25: 650 Ohm±25% Non-operating Current: 6mA
Operating Current: 35mA Withstand Voltage: 650VAC
Curie Temp: 80C Recovery Time: <60 Sec
High Light:

80C PTC NTC Thermistor

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650R PTC NTC Thermistor

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Positive Temperature PTC Thermistor

Product Description

 

Linear Positive Temperature Coefficient PTC NTC Thermistor 650R 80C For Overcurrent Overheat Protection

 

Application Range Of The NTC Thermistor 650R


The overcurrent protection type PTC thermistor is mainly used for overcurrent and thermal protection of [transformer (adapter)/primary coil/charger/digital multimeter/smart watt-hour meter/micromotor/transistor], etc., and is directly connected in series in the load circuit. When there is an abnormal situation in the line, it can automatically limit the overcurrent or block the current, and return to the original state after the fault is eliminated, commonly known as "ten thousand times fuse".

 

 

Features Of The NTC Thermistor 650R

 

·Contactless circuit and component protection ·Automatic limitation of overcurrent
·Automatic recovery after troubleshooting ·No noise and no sparks when working
·Reliable and easy to use

 

 

Application principle Of The NTC Thermistor 650R


The overcurrent protection type PTC thermistor is connected in series in 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 will not affect the electronic ballast (energy saving). Lights, transformers, multimeters) and other protected circuits work normally. When the circuit current greatly exceeds the rated current, the PTC heats up suddenly, and the resistance value suddenly increases to a high resistance state, thereby limiting or blocking the current and protecting the circuit from damage. After the current returns to normal, the PTC also automatically returns to a low resistance state, and the circuit resumes normal operation.
Overcurrent protection type PTC thermistor is used in electronic ballasts (energy-saving lamps, transformers, multimeters) and other overcurrent protection applications. With its scientific research and technological advantages, AMPFORT is the first to introduce high withstand voltage (V≥ 300V AC) featuring the WMZ12 type product.

When using PTC as an overcurrent protection element, generally the appropriate specifications for the maximum non-operating current and maximum working voltage should be selected, and factors such as the overall size of the element, rated zero-power resistance, and operating temperature range should also be considered. Usually, 1.2 to 1.5 times the maximum working current of the circuit during normal operation is taken as the maximum non-operating current of the PTC; the voltage that may be applied to the PTC under the normal or abnormal state of the circuit should not be greater than its maximum working voltage.

 

 

Dimension Of The NTC Thermistor 650R (mm)

 

Linear Positive Temperature Coefficient PTC NTC Thermistor 650R 80C For Overcurrent Overheat Protection 0

Dmax Tmax d F Hmax Lmin
4.5 5.0 0.5±0.05 5.0±1.0 9.0 20

1-2 Encapsulation material: silicone resin
1-3 Package Color: Green
1-4 Lead Specifications: Inward Bend
1-5 lead material: tinned wire
1-6 Product logo: MZ3

 

 

Electrical characteristics Of The NTC Thermistor 650R

 

Item Test Conditions Standard Unit
Rated zero power resistor R25 At=25±2 ℃, test voltage≤1.5VDC; 650±25% Ohm
Inactive current Int At=25±2℃, the power supply voltage is 220Vrms, the current value of on-off action, the duration is 1H, the PTC thermistor does not enter the high resistance state 6
│ΔR/Rn│≤50%
mA
Operating current It At=25±2 ℃, power supply voltage 220Vrms, initial current 35mA, PTC thermistor enters high resistance state within 300S 35 mA
Withstand voltage Vs At =25±2℃, 220Vrms/0.2A duration 10S, conversion 650Vrms duration 15S 650 Vac
Curie temperature TC The temperature corresponding to 2 times the resistance of zero power resistance is TC 80±10
Recovery Time The power supply voltage is 220Vrms, the initial current is 0.2A, and the power is turned off after 30S of power on, and the time required for the resistance value to recover to twice the initial resistance value. <60 sec

 

 

Series Specification Of The NTC Thermistor 650R

 

Mainly used for overcurrent protection of chargers, adapters (primary coils), electric energy meters, digital multimeters, etc. Withstand power frequency voltage Vmax=265Vac

P/N MAX Non Operating Current at 25℃ In (mA) Trip Current at 25℃It (mA) R 25 (Ω) I max (A) (mm)
Dmax Tmax d±0.05 F±1
WMZ12A-70LB15RM080 80mA at 40℃±2℃ 160mA at 25℃±2℃ 15±20% 1.0 8 5 0.6 5
WMZ12A-70LB12RM090 90mA at 40℃±2℃ 180mA at 25℃±2℃ 12±20%
WMZ12A-70LB10RM100 100mA at 40℃±2℃ 200mA at 25℃±2℃ 10±20%
WMZ12A-75S222RM002 2mA at 60℃±2℃ 10mA at 25℃±2℃ 2200±20% 0.2

4

4.5 0.5 5
WMZ12A-75S152RM003 3mA at 60℃±2℃ 12mA at 25℃±2℃ 1500±20%
WMZ12A-75S102RM004 4mA at 60℃±2℃ 16mA at 25℃±2℃ 1000±20%
WMZ12A-75S681RM005 5mA at 60℃±2℃ 20mA at 25℃±2℃ 680±20%
WMZ12A-75S471RM006 6mA at 60℃±2℃ 24mA at 25℃±2℃ 470±20% 0.3
WMZ12A-75S331RM007 7mA at 60℃±2℃ 30mA at 25℃±2℃ 330±20%
WMZ12A-75S221RM009 9mA at 60℃±2℃ 36mA at 25℃±2℃ 220±20%
WMZ12A-75S151RM010 10mA at 60℃±2℃ 40mA at 25℃±2℃ 150±20% 0.4
WMZ12A-75S101RM012 12mA at 60℃±2℃ 50mA at 25℃±2℃ 100±20%
WMZ12A-75A471RM007 7mA at 60℃±2℃ 28mA at 25℃±2℃ 470±20% 0.4 6.5 4.5 0.6 5
WMZ12A-75A331RM008 8mA at 60℃±2℃ 34mA at 25℃±2℃ 330±20%
WMZ12A-75A221RM010 10mA at 60℃±2℃ 40mA at 25℃±2℃ 220±20% 0.5
WMZ12A-75A151RM012 12mA at 60℃±2℃ 48mA at 25℃±2℃ 150±20%
WMZ12A-75A121RM013 13mA at 60℃±2℃ 52mA at 25℃±2℃ 121 ±20%
WMZ12A-75A101RM014 14mA at 60℃±2℃ 56mA at 25℃±2℃ 100±20% 0.6
WMZ12A-75A68RM016 16mA at 60℃±2℃ 64mA at 25℃±2℃ 68±20%
WMZ12A-75A47RM020 20mA at 60℃±2℃ 80mA at 25℃±2℃ 47±20%
WMZ12A-75B331RM010 10mA at 60℃±2℃ 40mA at 25℃±2℃ 330±20% 0.8 8 4.5 0.6 5
WMZ12A-75B221RM012 12mA at 60℃±2℃ 50mA at 25℃±2℃ 220±20%
WMZ12A-75B151RM015 15mA at 60℃±2℃ 60mA at 25℃±2℃ 150±20%
WMZ12A-75B101RM018 18mA at 60℃±2℃ 70mA at 25℃±2℃ 100±20% 1.0
WMZ12A-75B82RM020 20mA at 60℃±2℃ 80mA at 25℃±2℃ 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%
WMZ12A-75LB22RM060 60mA at 60℃±2℃ 150mA at 25℃±2℃ 22±20% 1.5
WMZ12A-75LB15RM070 70mA at 60℃±2℃ 175mA at 25℃±2℃ 15±20%
WMZ12A-75LB10RM080 80mA at 60℃±2℃ 200mA at 25℃±2℃ 10±20%
WMZ12A-80S681RM005* 5mA at 60℃±2℃ 20mA at 25℃±2℃ 680±20% 0.2 4.5 5.0 0.6 5
WMZ12A-80S471RM006* 6mA at 60℃±2℃ 24mA at 25℃±2℃ 470±20%
WMZ12A-80LB50RM060* 45mA at 60℃±2℃ 120mA at 25℃±2℃ 50±20% 1.2 9 5 0.6 5
WMZ12A-85A102RM0045* 4.5mA at 60℃±2℃ 19mA at 25℃±2℃ 1000±20% 0.4 6.5 5.0 0.6 5
WMZ12A-85A681RM007* 7mA at 60℃±2℃ 30mA at 25℃±2℃ 680±20%
WMZ12A-85A50RM030* 30mA at 60℃±2℃ 60mA at 25℃±2℃ 50±20% 0.8
WMZ12A-85A70RM025* 25mA at 60℃±2℃ 90mA at 25℃±2℃ 70±20%
WMZ12A-85B151RM025 25mA at 60℃±2℃ 100mA at 25℃±2℃

150±20%

0.8 8 4.5 0.6 5
WMZ12A-85B121RM030 30mA at 60℃±2℃ 120mA at 25℃±2℃

120±20%

WMZ12A-85B101RM035 35mA at 60℃±2℃ 140mA at 25℃±2℃

100±20%

0.9
WMZ12A-85B82RM040 40mA at 60℃±2℃ 160mA at 25℃±2℃

82±20%

WMZ12A-85B68RM045* 45mA at 60℃±2℃ 180mA at 25℃±2℃ 68±20% 1.2
WMZ12A-85B47RM050 50mA at 60℃±2℃ 200mA at 25℃±2℃ 47±20%
WMZ12A-85B25RM065* 65mA at 60℃±2℃ 260mA at 25℃±2℃ 25±20%
WMZ12A-85LB68RM060 37mA at 60℃±2℃ 110mA at 25℃±2℃ 68±20% 1.2 9 4.5 0.6 5
WMZ12A-85LB47RM065 40mA at 60℃±2℃ 120mA at 25℃±2℃ 47±20%
WMZ12A-85LB39RM070 50mA at 60℃±2℃ 150mA at 25℃±2℃ 39±20%
WMZ12A-85LB33RM075 75 150 33±20%
WMZ12A-85LB25RM080 80 160 25±20% 1.5
WMZ12A-85LB22RM085 85 170 22±20%
WMZ12A-85LB18RM090 90 180 18±20%
WMZ12A-85LB15RM098 98 196 15±20%
WMZ12A-85LB12RM105 105 210 12±20%
WMZ12A-85LB10RM115 115 230 10±20%
WMZ12A-95LB22RM100 100 200 22±20%
WMZ12A-100B131RM045* 45mA at 60℃±2℃ 130mA at 25℃±2℃ 130±20% 1.2 8.5 5.0 0.6 5
WMZ12A-100B70RM050* 50mA at 60℃±2℃ 145mA at 25℃±2℃ 70±20%
WMZ12A-100B60RM055* 55mA at 60℃±2℃ 160mA at 25℃±2℃ 60±20% 2.0
WMZ12A-100B50RM060* 60mA at 60℃±2℃ 180mA at 25℃±2℃ 50±20%
WMZ12A-100B22RM090* 90mA at 60℃±2℃ 260mA at 25℃±2℃ 22±20%
WMZ12A-105S102RM010 10mA at 60℃±2℃ 25mA at 25℃±2℃ 1000±20% 0.25 4.5 4.5 0.5 5
WMZ12A-105S221RM020 20mA at 60℃±2℃ 50mA at 25℃±2℃ 220±20%
WMZ12A-105S151RM025 25mA at 60℃±2℃ 65mA at 25℃±2℃ 150±20%
WMZ12A-105S101RM030 30mA at 60℃±2℃ 75mA at 25℃±2℃ 100±20%
WMZ12A-105L221RM025 25mA at 60℃±2℃ 65mA at 25℃±2℃ 220±20% 0.3 5.5 4.5 0.5 5
WMZ12A-105L151RM030 30mA at 60℃±2℃ 75mA at 25℃±2℃ 150±20%
WMZ12A-105L121RM35 35mA at 60℃±2℃ 88mA at 25℃±2℃ 120±20%
WMZ12A-105L101RM40 40mA at 60℃±2℃ 100mA at 25℃±2℃ 100±20%
WMZ12A-105L75RM45 45mA at 60℃±2℃ 100mA at 25℃±2℃ 75±20%
WMZ12A-105L68RM50 50mA at 60℃±2℃ 125mA at 25℃±2℃ 68±20%
WMZ12A-105L47RM55 55mA at 60℃±2℃ 138mA at 25℃±2℃ 47±20%
WMZ12A-105A151RM035 35mA at 60℃±2℃ 88mA at 25℃±2℃ 150±20% 0.4 5.5 4.5 0.5 5
WMZ12A-105A101RM45 45mA at 60℃±2℃ 115mA at 25℃±2℃ 100±20%
WMZ12A-105A68RM50 55mA at 60℃±2℃ 138mA at 25℃±2℃ 68±20%
WMZ12A-105B151M045 45mA at 60℃±2℃ 113mA at 25℃±2℃ 150±20% 0.8 8 4.5 0.6 5
WMZ12A-105B121M050 50mA at 60℃±2℃ 125mA at 25℃±2℃ 120±20%
WMZ12A-105B101M055 55mA at 60℃±2℃ 138mA at 25℃±2℃ 100±20%
WMZ12A-105B82RM060 60mA at 60℃±2℃ 150mA at 25℃±2℃ 82±20% 0.9
WMZ12A-105B62RM075 75mA at 60℃±2℃ 188mA at 25℃±2℃ 62±20%
WMZ12A-105LB39RM085 85mA at 60℃±2℃ 213mA at 25℃±2℃ 39±20% 1.2 9 4.5 0.6 5
WMZ12A-105LB22RM100 100mA at 60℃±2℃ 250mA at 25℃±2℃ 22±20%
WMZ12A-105LB15RM110 110mA at 60℃±2℃ 275mA at 25℃±2℃ 15±20%
WMZ12A-105LB10RM120 120mA at 60℃±2℃ 300mA at 25℃±2℃ 22±20%
WMZ12A-105M22RM120 120mA at 60℃±2℃ 300mA at 25℃±2℃ 22±20% 1.6 12 4.5 0.6 5
WMZ12A-105M15RM130 130mA at 60℃±2℃ 325mA at 25℃±2℃ 15±20%
WMZ12A-105M10RM140 140mA at 60℃±2℃ 350mA at 25℃±2℃ 10±20%
WMZ12A-105M8R2M150 150mA at 60℃±2℃ 375mA at 25℃±2℃ 8.2±20%
WMZ12A-105SL18RM150 150mA at 60℃±2℃ 375mA at 25℃±2℃ 18±20% 2.5 15 5 0.8 7.5
WMZ12A-105SL15RM160 160mA at 60℃±2℃ 400mA at 25℃±2℃ 15±20%
WMZ12A-105SL12RM170 170mA at 60℃±2℃ 425mA at 25℃±2℃ 12±20%
WMZ12A-105SL10RM180 180mA at 60℃±2℃ 450mA at 25℃±2℃ 10±20%
WMZ12A-105SL8R2M190 190mA at 60℃±2℃ 480mA at 25℃±2℃ 8.2±20%
WMZ12A-105SL6R8M200 200mA at 60℃±2℃ 500mA at 25℃±2℃ 6.8±20%
WMZ12A-120L101RM040 40mA at 60℃±2℃ 80mA at 25℃±2℃ 100±20% 0.3 5.5 4.5 0.6 5
WMZ12A-120L75RM045 45mA at 60℃±2℃ 90mA at 25℃±2℃ 75±20%
WMZ12A-120L62RM050 50mA at 60℃±2℃ 100mA at 25℃±2℃ 62±20%
WMZ12A-120A102RM015 15mA at 60℃±2℃ 40mA at 25℃±2℃ 1000±20% 0.4 6.5 5 0.6 5
WMZ12A-120A301RM020 20mA at 60℃±2℃ 50mA at 25℃±2℃ 300±20%
WMZ12A-120A151RM040 40mA at 60℃±2℃ 80mA at 60℃±2℃ 151±20%
WMZ12A-120A101RM050 50mA at 60℃±2℃ 100mA at 60℃±2℃ 100±20%
WMZ12A-120A68RM060 60mA at 60℃±2℃ 120mA at 25℃±2℃ 68±20%
WMZ12A-120A47RM065 65mA at 60℃±2℃ 130mA at 25℃±2℃ 47±20%
WMZ12A-120B251RM030 30mA at 60℃±2℃ 75mA at 25℃±2℃ 250±20% 0.9 8 5 0.6 5
WMZ12A-120B121RM045 45mA at 60℃±2℃ 110mA at 25℃±2℃ 121±20%
WMZ12A-120B101RM050 50mA at 60℃±2℃ 125mA at 25℃±2℃ 100±20%
WMZ12A-120B68RM070 70mA at 60℃±2℃ 180mA at 25℃±2℃ 68±20%
WMZ12A-120B56RM080 80mA at 60℃±2℃ 205mA at 25℃±2℃ 56±20%
WMZ12A-120LB25RM110 110mA at 60℃±2℃ 270mA at 25℃±2℃ 25±20% 1.2 9 5 0.6 5
WMZ12A-120LB39RM100 100mA at 60℃±2℃ 240mA at 25℃±2℃ 39±20% 1.2 9 5 0.6 5
WMZ12A-120LB68RM075 75mA at 60℃±2℃ 180mA at 25℃±2℃ 68±20% 1.2 9 5 0.6 5
WMZ12A-120LB82RM060 60mA at 60℃±2℃ 145mA at 25℃±2℃ 82±20% 1.2 9 5 0.6 5
WMZ12A-120LB101RM055 55mA at 60℃±2℃ 130mA at 25℃±2℃ 100±20% 1.2 9 5 0.6 5
WMZ12A-120M181RM040 40mA at 60℃±2℃ 80mA at 25℃±2℃ 180±20% 1.6 12 5 0.6 5
WMZ12A-120M101RM060 60mA at 60℃±2℃ 120mA at 25℃±2℃ 100±20%
WMZ12A-120M82RM065 65mA at 60℃±2℃ 130mA at 25℃±2℃ 82±20%
WMZ12A-120M60RM070 70mA at 60℃±2℃ 140mA at 25℃±2℃ 60±20%
WMZ12A-120M55RM080 80mA at 60℃±2℃ 160mA at 25℃±2℃ 55±20%
WMZ12A-120M47RM090 90mA at 60℃±2℃ 180mA at 25℃±2℃ 47±20%
WMZ12A-120M39RM100 100mA at 60℃±2℃ 200mA at 25℃±2℃ 39±20%
WMZ12A-120M33RM110 110mA at 60℃±2℃ 220mA at 25℃±2℃ 33±20%
WMZ12A-120M22RM130 130mA at 60℃±2℃ 260mA at 25℃±2℃ 22±20%
WMZ12A-120M15RM150 145mA at 60℃±2℃ 290mA at 25℃±2℃ 15±20%
WMZ12A-120M10RM170 160mA at 60℃±2℃ 320mA at 25℃±2℃ 10±20%
WMZ12A-120M8R2M170 170mA at 60℃±2℃ 340mA at 25℃±2℃ 8.2±20%
WMZ12A-120SL45RM120 120mA at 60℃±2℃ 300mA at 25℃±2℃ 45±20% 2.5 15 5 0.6 5
WMZ12A-120SL22RM180 180mA at 60℃±2℃ 360mA at 25℃±2℃ 22±20%
WMZ12A-120SL15RM200 200mA at 60℃±2℃ 400mA at 25℃±2℃ 15±20%
WMZ12A-120SL12RM210 210mA at 60℃±2℃ 420mA at 25℃±2℃ 12±20%
WMZ12A-120SL10RM220 220mA at 60℃±2℃ 440mA at 25℃±2℃ 10±20%
WMZ12A-120SL8R2M240 240mA at 60℃±2℃ 480mA at 25℃±2℃ 8.2±20%
WMZ12A-120SL6R8M260 260mA at 60℃±2℃ 520mA at 25℃±2℃ 6.8±20%
WMZ12A-120GL6R0M300 300mA at 60℃±2℃ 780mA at 25℃±2℃ 6.0±20% 3.1 17.5 5 0.6 5
WMZ12A-120GL7R0M280 280mA at 60℃±2℃ 700mA at 25℃±2℃ 7.0±20%
WMZ12A-120LL12RM300 300 600 12±20% 3.5 24 5 0.8 7.5
WMZ12A-120LL10RM330 330 660 10±20%
WMZ12A-120LL8R2M360 360 720 8.2±20% 4.0
WMZ12A-120LL6R8M400 400 800 6.8±20%
WMZ12A-120LL4R7M450 450 900 4.7±20% 4.5
WMZ12A-120LL3R3M500 500 1000 3.3±20%
WMZ12A-120LL2R2M550 550 1100 2.2±20% 5.0
WMZ12A-120LL1R5M600 600 1200 1.5±20%

Used for 485, 232 and other interface circuit protection

Automatic meter reading technology is becoming more and more popular in electric meter applications. This technology provides a communication port for electric meters to read data remotely. RS-485 is a simple, cheap and reliable communication specification, and PTC thermistors can be used for RS-485 electric meters. The circuit can provide over-voltage and over-current protection, such as when the RS-485 bus is short-circuited with the power line (for example, 220/380V). A kind of PTC. When the line is in a normal state, the PTC is in a normal state, and the resistance value is small, which will not affect the normal operation of the protected circuit. When the circuit fails, the current increases, and the PTC is in a high-impedance state, making the circuit in a relatively "Disconnected" state, so as to protect the RS-485 interface from damage, when the fault is removed, the PTC will automatically return to the low-impedance state.

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