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Mini Radial Leaded 12 ohm PTC Thermistor , Vishay BC Components

Mini Radial Leaded 12 ohm PTC Thermistor , Vishay BC Components

صورة كبيرة :  Mini Radial Leaded 12 ohm PTC Thermistor , Vishay BC Components

تفاصيل المنتج:

Place of Origin: Dongguan,Guangdong,China
اسم العلامة التجارية: UCHI
إصدار الشهادات: UL,SGS,ROHS
Model Number: MZ11

شروط الدفع والشحن:

Minimum Order Quantity: 5000PCS
الأسعار: Negotiable
Packaging Details: Bulk
Delivery Time: 7 working days
Payment Terms: T/T,Paypal,Western Union,Money gram
Supply Ability: 600,000,000PCS Per Month
مفصلة وصف المنتج

Mini Radial Leaded 12 ohm PTC Thermistor , Vishay BC Components

 

Quick Details

 

1. Used in the frequent-switching,typical switching life can pass over 100,000 times;
2. High reliability, good performance of safety and stability;
3. Wide operating temperature range;
    -25 ~ +125℃(when V=0V)
    0~ +60℃(when V=Vmax)
4. The withstanding voltage can reach to over 420-1000VAC;
5. The resistance will not drift in normal temperature.
6. Small dimension  
7. Complete specifications
8. Stable delayed time

 

 

Description

 

 

Ceramic PTC (positive temperature coefficient) thermistors are used instead of conventional fuses to protect load, such as motors, transformers, or electronic circuit, against overcurrent for circuit protection. PTC thermistor protector not only respond to inadmissibly high currents but also if a preset temperature limit is exceeded. PTC thermistor over-current protector limits the power dissipation of the whole circuit by increasing their resistance and thus reducing the current to a harmless residual value. In contrast to conventional fuses, PTC thermistor resettable fuses do not have to be replaced after elimination of the fault but resume their protective function immediately after a short cooling-down time.

 
 
Application
 
It applies in the over-current overload and short circuit protection of transformers, battery charger, switches, switch power supply, adaptor, meter, instrumentation, apparatus, electronic coils, control panels, air conditioner, automotive electron, etc.
 
 
Specification
 
 PTC Thermistor outline and dimension (mm)
 
 
PTC Thermistor for Overload Over-current Protection 265V/250V Series Data

 

Part number

Resistance
@25C 
R25
(OHM)

Non-trip
current
Int(mA)

Trip current 
@25C 
It
(mA)

Max.
operating
voltage 
Vmax 
(V)

Max. 
current 
Imax
(A)

Reference
temperature 
Tref
(Centigrade)

Dimension
(mm)

@25C

@60C

Dmax

Tmax

Φd

MZ11-20P3R7H265

3.7 ohm

530mA

430mA

1050mA

265V

4.3A

120C

22.0

5.0

0.6

MZ11-16P6R0H265

6.0 ohm

390mA

300mA

780mA

265V

3.1A

17.5

5.0

0.6

MZ11-16P7R0H265

7.0 ohm

350mA

280mA

700mA

265V

3.1A

17.5

5.0

0.6

MZ11-13P10RH265

10 ohm

260mA

200mA

520mA

265V

1.8A

14.0

5.0

0.6

MZ11-13P12RH265

12 ohm

225mA

180mA

450mA

265V

1.8A

14.0

5.0

0.6

MZ11-12P10RH265

10 ohm

250mA

200mA

500mA

265V

1.8A

13.5

5.0

0.6

MZ11-12P101H265

100 ohm

50mA

40mA

100mA

265V

1.8A

13.5

5.0

0.6

MZ11-10P15RH265

15 ohm

180mA

140mA

350mA

265V

1.2A

11.0

5.0

0.6

MZ11-10P39RH265

39 ohm

130mA

100mA

250mA

265V

1.2A

11.0

5.0

0.6

MZ11-08P15RH250

15 ohm

150mA

120mA

300mA

250V

0.8A

9.0

5.0

0.6

MZ11-08P25RH265

25 ohm

130mA

100mA

250mA

265V

0.8A

9.0

5.0

0.6

MZ11-08P35RH265

35 ohm

115mA

90mA

225mA

265V

0.8A

9.0

5.0

0.6

MZ11-08P45RH265

45 ohm

105mA

80mA

200mA

265V

0.8A

9.0

5.0

0.6

MZ11-08P55RH265

55 ohm

90mA

70mA

180mA

265V

0.8A

9.0

5.0

0.6

MZ11-07P82RH265

82 ohm

70mA

50mA

140mA

265V

0.6A

8.0

5.0

0.6

MZ11-07P56RH265

56 ohm

90mA

60mA

175mA

265V

0.6A

8.0

5.0

0.6

MZ11-06P33RH250

33 ohm

110mA

85mA

200mA

250V

0.4A

7.0

4.5

0.6

MZ11-05P70RH265

70 ohm

65mA

50mA

130mA

265V

0.3A

6.5

5.0

0.6

MZ11-05P85RH265

85 ohm

60mA

45mA

120mA

265V

0.3A

6.5

5.0

0.6

MZ11-05P39RH250

39 ohm

80mA

65mA

160mA

250V

0.2A

6.5

5.0

0.6

MZ11-05P121H265

120 ohm

45mA

35mA

90mA

265V

0.3A

6.5

5.0

0.6

MZ11-05P181H265

180 ohm

40mA

30mA

80mA

265V

0.3A

6.5

5.0

0.6

MZ11-04P70RH250

70 ohm

50mA

40mA

100mA

250V

0.2A

5.5

5.0

0.6

MZ11-04P121H265

120 ohm

40mA

30mA

80mA

265V

0.2A

5.5

5.0

0.6

MZ11-03P151H250

150 ohm

40mA

30mA

75mA

250V

0.2A

4.5

5.0

0.5

MZ11-10N12RH250

12 ohm

170mA

130mA

340mA

250V

1.2A

100C

11.0

5.0

0.6

MZ11-10N18RH265

18 ohm

145mA

110mA

290mA

265V

1.2A

11.0

5.0

0.6

MZ11-10N22RH265

22 ohm

125mA

90mA

250mA

265V

1.2A

11.0

5.0

0.6

MZ11-07N22RH250

22 ohm

120mA

90mA

225mA

250V

0.5A

8.0

5.0

0.6

MZ11-05N151H265

150 ohm

38mA

30mA

80mA

265V

0.3A

6.5

5.0

0.6

MZ11-05N301H265

300 ohm

27mA

20mA

55mA

265V

0.3A

6.5

5.0

0.6

MZ11-05N601H265

600 ohm

20mA

15mA

40mA

265V

0.2A

6.5

5.0

0.6

MZ11-05N102H265

1000 ohm

15mA

12mA

30mA

265V

0.2A

6.5

5.0

0.6

MZ11-04N151H265

150 ohm

36mA

28mA

80mA

265V

0.3

5.5

5.0

0.6

MZ11-03N151H265

150 ohm

33mA

25mA

65mA

265V

0.2A

4.5

5.0

0.5

MZ11-03N101H250

100 ohm

40mA

30mA

80mA

250V

0.2A

4.5

5.0

0.5

MZ11-03N70RH250

70 ohm

45mA

35mA

90mA

250V

0.1A

4.5

5.0

0.5

MZ11-08M12RH250

12 ohm

120mA

70mA

220mA

250V

0.8A

80C

9.0

5.0

0.6

MZ11-08M25RH265

25 ohm

85mA

50mA

170mA

265V

0.8A

9.0

5.0

0.6

MZ11-08M35RH265

35 ohm

80mA

50mA

150mA

265V

0.8A

9.0

5.0

0.6

MZ11-08M50RH265

50 ohm

60mA

40mA

120mA

265V

1.0A

9.0

5.0

0.6

MZ11-07M101H265

100 ohm

50mA

30mA

100mA

265V

0.6A

8.0

5.0

0.6

MZ11-05M70RH250

70 ohm

50mA

30mA

100mA

250V

0.3A

6.5

5.0

0.6

MZ11-05M121H265

120 ohm

30mA

20mA

60mA

265V

0.3A

6.5

5.0

0.6

MZ11-03M101H250

100 ohm

25mA

18mA

55mA

250V

0.2A

4.5

5.0

0.5

MZ11-03M151H265

150 ohm

22mA

15mA

45mA

265V

0.2A

4.5

5.0

0.5

Note: If not specified, Resistance @25C (R25) tolerance shall be +/-25%.

 

PTC Thermistor for Overload Over-current Protection 140V Series

 

Part Number

Resistance
@ 25C
R25
(OHM)

Non-trip
current 
Int(mA)

Trip 
current
@25C
It
(mA)

Max. 
operating 
voltage
Vmax 
(V)

Max. 
current 
Imax
(A)

Reference
temperature 
Tref
(Centigrade)

Dimension
(mm)

@25C

@60C

Dmax

Tmax

Φd

MZ12-20P2R6H140

2.6 ohm

650mA

500mA

1300mA

140V

4.3A

120C

22.0

5.0

0.6

MZ12-16P4R7H140

4.7 ohm

425mA

330mA

850mA

140V

3.1A

17.5

5.0

0.6

MZ12-16P5R6H140

5.6 ohm

400mA

310mA

800mA

140V

3.1A

17.5

5.0

0.6

MZ12-13P6R8H140

6.8 ohm

325mA

250mA

650mA

140V

1.8A

14.0

5.0

0.6

MZ12-12P5R6H140

5.6 ohm

325mA

250mA

650mA

140V

1.8A

13.5

5.0

0.6

MZ12-12P6R8H140

6.8 ohm

300mA

230mA

600mA

140V

1.8A

13.5

5.0

0.6

MZ12-10P10RH140

10 ohm

225mA

170mA

450mA

140V

1.2A

11.0

5.0

0.6

MZ12-10P6R8H140

6.8 ohm

275mA

200mA

550mA

140V

1.2A

11.0

5.0

0.6

MZ12-08P22RH140

22 ohm

135mA

110mA

270mA

140V

0.8A

9.0

5.0

0.6

MZ12-06P25RH140

25 ohm

125mA

90mA

250mA

140V

0.5A

7.0

5.0

0.6

MZ12-05P33RH140

33 ohm

90mA

70mA

175mA

140V

0.3A

6.5

5.0

0.6

MZ12-16R2RIH140

2.1 ohm

710mA

570mA

1420mA

140V

3.1A

140C

17.5

5.0

0.6

MZ12-13R3R8H140

3.8 ohm

500mA

400mA

1000mA

140V

1.8A

14.0

5.0

0.6

MZ12-10R15RH140

15 ohm

210mA

170mA

420mA

140V

1.2A

11.0

5.0

0.6

MZ12-10R6R7H140

6.7 ohm

300mA

230mA

600mA

140V

1.2A

11.0

5.0

0.6

MZ12-10R10RH140

10 ohm

250mA

200mA

500mA

140V

1.2A

11.0

5.0

0.6

MZ12-08R12RH140

12 ohm

200mA

160mA

400mA

140V

0.6A

9.0

5.0

0.6

Note: If not specified, Resistance @25C (R25) tolerance shall be +/-25%.

 

PTC Thermistor for Overload Over-current Protection 60V Series

Part Number

Resistance
@ 25C 
R25
(Ω)

Non-trip 
current 
Int(mA)

Trip 
current
@25C
It
(mA)

Max. 
operating
voltage
Vmax
(V)

Max. 
current 
Imax
(A)

Reference 
temperature 
Tref 
(Centigrade)

Dimension 
(mm)

@25C

@60C

Dmax

Tmax

Φd

MZ13-16P2R3H60

2.3 ohm

550mA

450mA

1100mA

60V

8.0A

120C

17.5

4.0

0.6

MZ13-12P3R7H60

3.7 ohm

380mA

320mA

750mA

60V

5.5

13.5

4.0

0.6

MZ13-10P5R6H60

5.6 ohm

300mA

250mA

600mA

60V

4.3A

11.0

4.0

0.6

MZ13-08P9R4H60

9.4 ohm

180mA

150mA

360mA

60V

3.0A

9.0

4.0

0.6

MZ13-05P25RH60

25 ohm

100mA

85mA

200mA

60V

1.0A

6.5

4.0

0.6

MZ13-03P55RH60

55 ohm

60mA

50mA

120mA

60V

0.7A

4.5

4.0

0.5

MZ13-08M4R7H60

4.7 ohm

180mA

120mA

360mA

60V

3.0A

80C

9.0

4.0

0.6

Note: If not specified, Resistance @25C (R25) tolerance shall be +/-25%.

 

PTC Thermistor Current Limiting Devices for Transformer Over-current Overload Protection 265V, 100C 

(For application of PTC thermistor protector installation inside transformer windings coil)

Part number

Resistance
@25C
R25
(OHM)

Non-trip
current 
Int (mA)

Trip 
current
@25C 
It
(mA)

Max.
operating 
voltage
Vmax
(V)

Max.
current 
Imax
(A)

Reference
temperature 
Tref
(Centigrade)

Dimension
(mm)

@25C

@80C

Dmax

Tmax

Φd

MZ11-05N121H265

120 ohm

45mA

25mA

90mA

265V

0.4A

100C

6.5

5.0

0.6

MZ11-05N151H265

150 ohm

38mA

20mA

80mA

265V

0.4A

6.5

5.0

0.6

MZ11-07N22RH265

22 ohm

110mA

60mA

220mA

265V

0.7A

8.0

4.5

0.6

MZ11-07N32RH265

32 ohm

95mA

50mA

190mA

265V

0.7A

8.0

4.5

0.6

MZ11-07N55RH265

55 ohm

70mA

40mA

140mA

265V

0.7A

8.0

5.0

0.6

MZ11-08N30RH265

30 ohm

100mA

55mA

200mA

265V

1.0A

9.0

5.0

0.6

MZ11-08N35RH265

35 ohm

90mA

50mA

180mA

265V

1.0A

9.0

5.0

0.6

MZ11-08N40RH265

40 ohm

85mA

45mA

170mA

265V

1.0A

9.0

5.0

0.6

MZ11-08N39RH265

39 ohm

95mA

50mA

180mA

265V

1.2A

9.5

5.0

0.6

MZ11-08N25RH265

25 ohm

110mA

60mA

220mA

265V

1.2A

9.5

5.0

0.6

MZ11-10N22RH265

22 ohm

125mA

70mA

250mA

265V

1.5A

11.0

5.0

0.6

MZ11-10N18RH265

18 ohm

145mA

80mA

290mA

265V

1.5A

11.0

5.0

0.6

MZ11-10N12RH265

12 ohm

170mA

95mA

340mA

265V

1.5A

11.0

5.0

0.6

MZ11-12N18RH265

18 ohm

180mA

100mA

360mA

265V

2.0A

13.5

5.0

0.6

MZ11-12N12RH265

12 ohm

210mA

120mA

420mA

265V

2.0A

13.5

5.0

0.6

Note: If not specified, Resistance @25C (R25) tolerance shall be +/-25%.

PTC Thermistor Current Limiting Devices for Transformer Over-current Overload Protection 265V 120C

(For application of PTC thermistor protector installation outside transformer windings coil)

Part number

Resistance
@25C
R25
(OHM)

Non-trip 
current 
Int(mA)

Trip 
current
@25C
It
(mA)

Max.
operating 
voltage
Vmax
(V)

Max. 
current 
Imax
(A)

Reference 
temperature 
Tref
(Centigrade)

Dimension 
(mm)

@25C

@60C

Dmax

Tmax

Φd

MZ11-16P6R0H265

6.0 ohm

390mA

300mA

780mA

265V

3.1A

120C

17.5

5.0

0.6

MZ11-13P10RH265

10 ohm

260mA

200mA

520mA

265V

1.8A

14.0

5.0

0.6

MZ11-12P10RH265

10 ohm

250mA

200mA

500mA

265V

1.8A

13.5

5.0

0.6

MZ11-10P15RH265

15 ohm

180mA

140mA

350mA

265V

1.2A

11.0

5.0

0.6

MZ11-08P25RH265

25 ohm

130mA

100mA

250mA

265V

0.8A

9.0

5.0

0.6

MZ11-08P35RH265

35 ohm

115mA

90mA

225mA

265V

0.8A

9.0

5.0

0.6

MZ11-08P45RH265

45 ohm

105mA

80mA

200mA

265V

0.8A

9.0

5.0

0.6

MZ11-08P55RH265

55 ohm

90mA

70mA

180mA

265V

0.8A

9.0

5.0

0.6

MZ11-05P70RH265

70 ohm

65mA

50mA

130mA

265V

0.3A

6.5

5.0

0.6

MZ11-03P151H250

150 ohm

40mA

30mA

75mA

250V

0.2A

4.5

5.0

0.5

Note: If not specified, Resistance @25C (R25) tolerance shall be +/-25%.
 

PTC Thermistor current limiting devices for measuring instrumentation and meter overload and short circuit protection, Voltage 265V/420V/550V, Reference Temperature 80C, 100C, 120C

Part number

Resistance 
@25C
R25
(OHM)

Non-trip 
current 
Int(mA)

Trip current 
@25C It
(mA)

Max. operating 
voltage
Vmax
(V)

Max. current
Imax 
(A)

Reference 
temperature 
Tref
(Centigrade)

Dimension 
(mm)

@25C

@60C

Dmax

Tmax

Φd

MZ11-03M151N265

150 ohm

20mA

15mA

50mA

265V

0.2A

80C

4.5

5.0

0.5

MZ11-03M102N265

1000 ohm

10mA

7mA

20mA

265V

0.1A

4.5

5.0

0.5

MZ11-03M152N265

1500 ohm

7mA

5mA

15mA

265V

0.1A

4.5

5.0

0.5

MZ11-04M45RN265

45 ohm

40mA

30mA

80mA

265V

0.3A

5.5

5.0

0.6

MZ11-05M601N420

600 ohm

20mA

16mA

40mA

420V

0.2A

6.5

5.0

0.6

MZ11-05M232N420

2300 ohm

8mA

6mA

17mA

420V

0.1A

6.5

5.0

0.6

MZ11-05M312N420

3100 ohm

5mA

4mA

13mA

420V

0.1A

6.5

5.0

0.6

MZ11-07M251N265

250 ohm

25mA

20mA

50mA

265V

0.5A

8.0

5.0

0.6

MZ11-07M112M550

1100 ohm

15mA

10mA

30mA

550V

0.5A

8.0

7.0

0.6

MZ11-08M12RN265

12 ohm

120mA

70mA

220mA

265V

0.8A

9.0

5.0

0.6

MZ11-03N151N265

150 ohm

30mA

25mA

60mA

265V

0.2A

100C

4.5

5.0

0.5

MZ11-03N401N265

400 ohm

25mA

20mA

45mA

265V

0.2A

4.5

5.0

0.5

MZ11-05N751N420

750 ohm

25mA

20mA

45mA

420V

0.2A

6.5

5.0

0.6

MZ11-05P39RN265

39 ohm

85mA

70mA

170mA

265V

0.4A

120C

6.5

5.0

0.6

MZ11-05P65RN265

65 ohm

70mA

60mA

140mA

265V

0.4A

6.5

5.0

0.6

MZ11-05P601N420

600 ohm

20mA

16mA

39mA

420V

0.2A

6.5

5.0

0.6

MZ11-05P122N550

1200 ohm

15mA

10mA

30mA

550V

0.1A

6.5

5.0

0.6

MZ11-05P152N550

1500 ohm

12mA

9mA

24mA

550V

0.1A

6.5

5.0

0.6

MZ11A-08P70RN420

70 ohm

64mA

50mA

127mA

420V

1.4A

8.5

7.0

0.6

MZ11A-08P121N420

120 ohm

49mA

40mA

97mA

420V

1.4A

8.5

7.0

0.6

MZ11A-08P151N420

150 ohm

43mA

35mA

86mA

420V

1.4A

8.5

7.0

0.6

MZ11A-08P501N550

500 ohm

24mA

19mA

48mA

550V

1.0A

8.5

7.0

0.6

Note: If not specified, Resistance @25C (R25) tolerance shall be +/-30%.
 

PTC Thermistor Protector Reliability data

Test

Standard

Test conditions

|ΔR25/R25|

Switching test at room temperature

IEC 60738-1

Imax, Vmax, 50 cycles.

<25%

Rapid change of temperature in air

IEC600628-2-14,
Test Na

T=TLCT, T=TUCT 5 cycles, 
30minutes.

<10%

Endurance at max. operating temperature 
and max. operating voltage

IEC 60738-1

Ambient temperature: +60℃, 
Maximum Operating Voltage, 
Current limited to Imax. 
Time: 24 hours

<25%

Storage in damp heat

IEC 600628-2-3

Temperature of air: 40℃, 
Relative humidity of air: 93%, 
Duration: 56 days

<10%

Lead wire tensile

GB2423.29

Test Ua: pull strength 10N, 10 seconds, 
Test Ub: bending 90°, pull strength 5N, 
successively twice. 
Test Uc: revolving 180°, 
successively twice.

≤20%

Reference information in selecting PTC thermistor over-current protection devices for overcurrent and overload protection.


1) Maximum operating voltage


PTC Thermistor over-current protection device is connected in series in the circuit , In normal operating state, only a small portion voltage is on PTC thermistor protector. When PTC thermistor current limiting devices is in high resistance state, it must bear almost all the power voltage. Therefore in PTC thermistor protector model selection, it must have sufficient high operating voltage, and also power voltage fluctuation must be taken into consideration.

 

2) Rated current ( Non-trip current) and Switching current (Trip current)


The PTC thermistor over-current protection device should have sufficient high rated current (that current at which the PTC thermistor protector will under no circumstances turn off) within the suitable voltage class. Consider whether the overall layout of the circuit can handle the increased power for the short time until the PTC thermistor protector reduces it. Here a worst case estimate is necessary. Rated current ( Non-trip current) and Switching current (Trip current) depend on the ambient temperature. So, as the worst case for the rated current, the maximum permissible temperature for the application should be taken, and for the switching current the lowest possible ambient temperature. In order to get reliable switching function, tripping current should be at least twice of non-trip current.

 

3) Maximum current permissible in maximum operating voltage


When PTC Thermistor over-current protection device is required for protective function, it needs to check whether there is the case that the maximum permissible current, which has been listed in data sheet, has been exceeded. Overloading the PTC thermistor protector by too high a switching current must be avoided, it may lead to PTC thermistor protector destroyed, or early failure.


4)Selection of Reference temperature (also called Switch temperature or Curie temperature)


We can offer PTC thermistor for over-current protection with reference temperature 80 ℃, 100 ℃, 120 ℃, 140 ℃. The rated current (non-trip current) depends on reference temperature and ceramic body diameter. In consideration of cutting down cost, high reference temperature and small dimension PTC Thermistor current limiting devices shall be more economical, but it may leads to higher PTC thermistor surface temperature, and need to check whether it will cause undesired unfavorable effects. Generally, reference temperature should be 20--40 ℃ higher than maximum operating ambient temperature.


5) Application environmental effects


If there is any contact with chemicals or use of potting or sealing compounds, all due care should be taken. The reduction of the titanate ceramic that can be caused by chemical effects on the surface of the thermistor and the resulting formation of low-resistance conducting paths. And the altered thermal relations in the sealant can lead to local overheating of the PTC thermistor protector and thus to failure.


An example of PTC thermistor over-current protection devices part selection for overload protection of power transformer.
An transformer has primary voltage 220V, secondary voltage 16V, secondary current 1.5A , primary current 330mA in abnormal condition, it shall enter into protective state within 10 minutes. Operating ambient temperature: -10C--+40C , temperature may rise 15--20C in normal operating state. PTC Thermistor will be installed near transformer. Please select an appropriate PTC thermistor part for primary protection.


1) Determine maximum operating voltage


Operating voltage 220V, considering power fluctuation, maximum operating voltage should be
220V x (1+20% ) =264V
Maximum operating voltage shall be 265V.

 

2) Determine non-trip current


According to calculation and actual measurement, primary current is 125mA in transformer normal operation. In consideration the ambient temperature in installation position may reach to 60℃ , Non-trip current in 60℃ should be 130--140mA.


3) Determine trip current


As the ambient temperature in PTC thermistor protector installation position may reach -10 ℃ , non trip current in -10 ℃ should be 320-330mA, tripping time within 5 minutes.


4) Determine rated zero power resistance at 25 centigrade. R25


PTC thermistor is in series in the primary circuit, the voltage decreasing should be possibly small, the heating power of PTC Thermistor itself also maintain possibly small. Generally, the voltage decreasing should be less than total power voltage 1%. We can get R25 through calculation
220V X 1% ÷125mA=17.6Ω


5) Determine maximum current


Trough practical measurement, primary current can reach 500mA in transformer secondary circuit in short circuit state. If considering that larger current may pass through PTC thermistor in the state of primary coil partial short circuit. The maximum current should be more than 1A .


6) Determine reference temperature and dimension of PTC thermistor over-current protection device


Maximum ambient temperature in PTC thermistor protector installation position may reach 60 ℃ , reference temperature should be 40 ℃ higher than that, then the reference temperature can be 100 ℃ . In considering cutting down cost, also PTC thermistor is not installed in the transformer windings coil, higher surface temperature won't have unfavorable effect to transformer, therefore reference temperature can also be 120 ℃ , and then the diameter of PTC Thermistor can be smaller.


7) Determine PTC thermistor over-current protection device part number.


Based on the above technical requirement, in reference of our technical data, AMZ11-10P15RH265 shall be more appropriate.
Maximum operating voltage 265V, rated zero power resistance at 25C (R25) 15 Ω±20% , non-trip current 140mA , trip current 350 mA , maximum current 1.5A , reference temperature 120 ℃ , diameter 11mm .

 

 

Competitive Advantage:,

 

  1. Factory supply directly
  2. Completed certificates such as UL,VDE,SGS,etc and high quality available
  3.  Quick delivery
  4. Best after-sales services
  5. OEM & ODM available

 

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Dongguan Uchi Electronics Co.,Ltd.

اتصل شخص: Anna

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