WMZ7 degaussed PTC thermistor

WMZ71/72/73 series PTC thermistors are mainly used in color TV/color display picture tube degaussing circuits. They have the advantages of low residual current and high reliability. Its typical application circuit is shown in the figure below. It is particularly worth mentioning that, WMZ71 welded encapsulated products fundamentally eliminate the inherent defects of electrode oxidation, reed aging and other inherent defects of WMZ72/73 series shelled products. Such products have many special requirements in terms of technology, process, materials, etc., only A few high-end manufacturers such as Japan's Murata, Nichicon and the United States' WECC have the ability to produce. Huaju has successfully launched this series of high-end products by leveraging its advantages in cooperation with foreign investors. Its product performance and quality have been recognized by famous European color TV manufacturers. Our products have first-class competitiveness in terms of cost and delivery, and we have the opportunity to become the preferred brand for major color TV and monitor manufacturers to replace imported products.

Commodity name： WMZ7 degaussed PTC thermistor

Classification:

PTC thermistor

Service Support:

产品描述
产品规格及参数

　　Product name: Degaussed PTC thermistor

　　1:Application circuit diagram

3. Model naming:

model	Nominal resistance	switching temperature	Rated voltage	maximum voltage	Current characteristics			Coil resistance	size
model	R25(Ω)	Tb(℃)	U(V)	Umax(A)	Starting current (A)	After 3 seconds (mA)	After 180 seconds (mA)	(Ω)	D(mm)	T(mm)
WMZ71-5R0M140	5	60±10	110	140	≥35	≤300	≤60	3.5	20	7
WMZ71-7R0M140	7		110	140	≥28	≤300	≤60	3.5	20	7
WMZ71-8R0M140	8		110	140	≥22	≤300	≤60	5	20	7
WMZ71-9R0M140	9		110	140	≥21	≤300	≤60	5	20	7
WMZ71-12RM140	12		110	140	≥17	≤300	≤60	5	20	7
WMZ71-7R0M270	7		220	270	≥22	≤300	≤45	20	20	7
WMZ71-9R0M270	9		220	270	≥20	≤300	≤45	20	20	7
WMZ71-12RM270	12		220	270	≥22	≤300	≤45	15	20	7
WMZ71-14RM270	14		220	270	≥20	≤300	≤45	15	20	7
WMZ71-18RM270	18		220	270	≥19	≤300	≤45	12	20	7
WMZ71-27RM270	27		220	270	≥15	≤300	≤30	10	12	7

MZ72 series

model	Nominal resistance	switching temperature	Rated voltage	maximum voltage	Current characteristics			Coil resistance	Minimum coil resistance
model	R25(Ω)	Tb(℃)	U(V)	Umax(A)	Starting current (A)	After 3 seconds (mA)	After 180 seconds (mA)	(Ω)	(Ω)
WMZ72-3ROM140V	3	60±10	110	140	≥22	≤300	≤60	10	5
WMZ72-4R5M140V	4.5		110	140	≥30	≤300	≤60	5	4
WMZ72-5R0M140V	5		110	140	≥35	≤300	≤60	3.5	1
WMZ72-7R0M140V	7		110	140	≥24	≤300	≤60	5	4
WMZ72-8ROM140V	8		110	140	≥22	≤300	≤60	5	3.5
WMZ72-9R0M140V	9		110	140	≥20	≤250	≤50	5	3
WMZ72-12RM140V	12		110	140	≥17	≤250	≤50	5	3
WMZ72-14RM140V	14		110	140	≥15	≤250	≤50	5	3
WMZ72-4R5M270V	4.5		220	270	≥30	≤200	≤50	15	12
WMZ72-7ROM270V	7		220	270	≥27	≤200	≤50	15	12
WMZ72-9R0M270V	9		220	270	≥24	≤200	≤40	15	10
WMZ72-12RM270V	12		220	270	≥24	≤200	≤40	12	8
WMZ72-14RM270V	14		220	270	≥24	≤200	≤40	10	8
WMZ72-18RM270V	18		220	270	≥22	≤200	≤40	8	8
WMZ72-27RM270V	27		220	270	≥17	≤200	≤40	6	5
WMZ72-14RM270V	14		220	270	≥24	≤300	≤60	10	8
WMZ72-18RM270V	18	80±10	220	270	≥20	≤300	≤60	10	8

MZ73 series

model	Nominal resistance	Secondary chip resistor	switching temperature	Rated voltage	maximum voltage	Current characteristics			Coil resistance
model	R25(Ω)	R25(Ω)	Tb(℃)	U(V)	Umax(A)	Starting current (A)	After 3 seconds (mA)	After 180 seconds (mA)	(Ω)
WMZ73-3R0M140V	3	100-1000	60±10	110	140	≥28	≤300	≤15	5.5
WMZ73-4R5M140V	4.5			110	140	≥23	≤300	≤15	8
WMZ73-5R0M140V	5			110	140	≥35	≤300	≤15	3.5
WMZ73-7R0M140V	7			110	140	≥24	≤300	≤15	5
WMZ73-8R0M140V	8			110	140	≥22	≤300	≤15	5
WMZ73-9R0M140V	9			110	140	≥17	≤300	≤15	8
WMZ73-12RM140V	12			110	140	≥14	≤300	≤15	8
WMZ73-14RM140V	14			110	140	≥12	≤300	≤15	10
WMZ73-4R5M270V	4.5			220	270	≥30	≤300	≤12	15
WMZ73-7R0M270V	7			220	270	≥26	≤300	≤10	15
WMZ73-9R0M270V	9			220	270	≥24	≤300	≤10	15
WMZ73-12RM270V	12			220	270	≥24	≤300	≤10	12
WMZ73-14RM270V	14			220	270	≥24	≤300	≤10	10
WMZ73-18RM270V	18			220	270	≥22	≤300	≤10	8
WMZ73-27RM270V	27			220	270	≥14.5	≤300	≤6	12
WMZ73-36RM270V	36			220	270	≥12.5	≤300	≤6	10

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WMZ7 degaussed PTC thermistor

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WMZ7 degaussed PTC thermistor