Zenamic Z25M / Z33M

Zenamic is Semitec’s registered trademark for metal oxide varistors which are transient voltage surge absorbers. Zenamic features large surge current and transient overvoltage handling capabilities. It is produced by sintering a ZnO based metal oxide mix at temperatures ranging from 1200 to 1400℃.
SEMITEC’S Zenamic products are fully compliant with RoHS DIRECTIVE2011/65/EU.

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Applications

・Semiconductor device protection: Diodes, transistors, thyristors, IC etc.
・Home electronics protection: TVs, air conditioners, refrigerators, microwave ovens, etc.
・Office automation equipment protection: PPC copiers, fax machines, PCs, etc.
・Industrial equipment protection: Robots, water heaters, machining equipment, etc.
・Inrush surge protection: Electromagnetic clutches/brakes, relay control devices, circuit breakers etc.
・Others: Automotive electronics circuits, vending machines, communication/broadcasting equipment, etc.

Rating

Z25M221S～102S

Part No.	Varistor voltage V1mA	Maximum allowable voltage		Clamping voltage (max.) V150A	Rated power	Maximum energy (2ms)	Maximum peak current (8/20μs)	Capacitance (TYP) (1kHz)
	Varistor voltage V1mA	AC	DC	Clamping voltage (max.) V150A	Rated power	Maximum energy (2ms)	Maximum peak current (8/20μs)	Capacitance (TYP) (1kHz)
	V	Vrms	V	V	W	J	A	pF
Z25M221S	187.0～253.0	120	165	380	1.0	125	10,000	3,300
Z25M271S	229.5～310.5	150	210	465		155		2,200
Z25M331S	280.5～379.5	175	245	570		185		1,900
Z25M391S	331.5～448.5	210	295	675		215		1,700
Z25M441S	374.0～506.0	240	335	760		225		1,500
Z25M471S	399.5～540.5	250	350	810		235		1,500
Z25M561S	476.0～644.0	300	420	970		260		1,400
Z25M681S	578.0～782.0	365	510	1,175		280		1,250
Z25M821S	697.0～943.0	440	615	1,415		330		800
Z25M102S	850.0～1,150.0	520	730	1,725		375		500

Z33M221S～102S

Part No.	Varistor voltage V1mA	Maximum allowable voltage		Clamping voltage (max.) V200A	Rated power	Maximum energy (2ms)	Maximum peak current (8/20μs)	Capacitance (TYP) (1kHz)
	Varistor voltage V1mA	AC	DC	Clamping voltage (max.) V200A	Rated power	Maximum energy (2ms)	Maximum peak current (8/20μs)	Capacitance (TYP) (1kHz)
	V	Vrms	V	V	W	J	A	pF
Z33M221S	187.0～253.0	120	165	380	1.2	200	20,000	5,500
Z33M271S	229.5～310.5	150	210	465		255		4,200
Z33M331S	280.5～379.5	175	245	570		310		3,700
Z33M391S	331.5～448.5	210	295	675		360		3,200
Z33M441S	374.0～506.0	240	335	760		370		2,800
Z33M471S	399.5～540.5	250	350	810		385		2,600
Z33M561S	476.0～644.0	300	420	970		425		2,200
Z33M681S	578.0～782.0	365	510	1,175		460		1,800
Z33M821S	697.0～943.0	440	615	1,415		580		1,500
Z33M102S	850.0～1,150.0	520	730	1,725		620		1,000

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