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SIOV Metal Oxide Varistors

TDK SIOV Metal Oxide Varistors feature a wide operating voltage range of 11 to 1100V_RMS.These devices offer high surge current ratings up to 8kA and no derating up to 105°C ambient temperature. The SIOV leaded varistors meet new UL 1449 3rd Edition requirements. TDK SIOV Metal Oxide Varistors applications include lighting, radio and TV equipment, and household appliances.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.	Series	Product	Mounting Style	Termination Style	Voltage Rating AC	Voltage Rating DC	Varistor Voltage	Clamping Voltage	Diameter	Max Surge Current	Surge Energy Rating	Capacitance	Minimum Operating Temperature	Maximum Operating Temperature	Qualification	Packaging
Varistors 420VAC 10% 14mm AdvanceD B72214S2421K101 TDK 1: £0.661 3,048In Stock	Mfr. Part No. B72214S2421K101 Mouser Part No 871-B72214S2421K101	TDK	Varistors 420VAC 10% 14mm AdvanceD Learn More about TDK epcosvaristors	Datasheet	3,048In Stock	£0.661 £0.423 £0.346 £0.331 View £0.32 £0.301 £0.284 £0.278	Min.: 1 Mult.: 1	Disc Varistor, AdvanceD 14mm	MOVs	PCB Mount	Radial	420 VAC	560 VDC	680 V	1.12 kV	15.5 mm	5 kA	136 J	220 pF	- 40 C	+ 105 C		Bulk
Varistors 510VAC 10% 14mm AdvanceD B72214S2511K101 TDK 1: £0.849 2,919In Stock 3,000Expected 07/12/2026	Mfr. Part No. B72214S2511K101 Mouser Part No 871-B72214S2511K101	TDK	Varistors 510VAC 10% 14mm AdvanceD Learn More about TDK epcosvaristors	Datasheet	2,919In Stock 3,000Expected 07/12/2026	£0.849 £0.55 £0.453 £0.434 View £0.396 £0.383 £0.368	Min.: 1 Mult.: 1	Disc Varistor, AdvanceD 14mm	MOVs	PCB Mount	Radial	510 VAC	670 VDC	820 V	1.355 kV	15.5 mm	5 kA	165 J	180 pF	- 40 C	+ 105 C		Bulk
Varistors 680VAC 10% 14mm AdvanceD B72214S2681K101 TDK 1: £0.849 2,170In Stock	Mfr. Part No. B72214S2681K101 Mouser Part No 871-B72214S2681K101	TDK	Varistors 680VAC 10% 14mm AdvanceD Learn More about TDK epcosvaristors	Datasheet	2,170In Stock	£0.849 £0.55 £0.453 £0.434 View £0.405 £0.383 £0.378	Min.: 1 Mult.: 1	Disc Varistor, AdvanceD 14mm	MOVs	PCB Mount	Radial	680 VAC	895 VDC	1.1 kV	1.815 kV	15.5 mm	5 kA	220 J	140 pF	- 40 C	+ 105 C		Bulk
Varistors 320VAC 10% 14mm StandarD B72214S0321K501 TDK 1: £0.39 699In Stock	Mfr. Part No. B72214S0321K501 Mouser Part No 871-B72214S321K501	TDK	Varistors 320VAC 10% 14mm StandarD Learn More about TDK epcos lumileds led solutions	Datasheet	699In Stock	£0.39 £0.244 £0.196 £0.18 View £0.169 £0.164 £0.159 £0.154	Min.: 1 Mult.: 1	Disc Varistor,StandarD 14mm	MOVs	PCB Mount	Radial	320 VAC	420 VDC	510 V	840 V	14 mm	4.5 kA	84 J	370 pF	- 40 C	+ 105 C		Bulk
Varistors 35VAC 10% 14mm StandarD B72214S0350K151 TDK 1: £0.45 1,975In Stock	Mfr. Part No. B72214S0350K151 Mouser Part No 871-B72214S350K151	TDK	Varistors 35VAC 10% 14mm StandarD Learn More about TDK epcos lumileds led solutions	Datasheet	1,975In Stock	Cut Tape £0.45 £0.284 £0.23 £0.219 Reel £0.196 View £0.207 £0.192 £0.189	Min.: 1 Mult.: 1 : 3,000	Disc Varistor,StandarD 14mm	MOVs	PCB Mount	Radial	35 VAC	45 VDC	56 V	110 V	14 mm	1 kA	10 J	4.2 nF	- 40 C	+ 105 C		Reel, Cut Tape
Varistors 385VAC 10% 14mm StandarD B72214S0381K101 TDK 1: £0.405 4,734In Stock 10,800Expected 28/10/2026	Mfr. Part No. B72214S0381K101 Mouser Part No 871-B72214S381K101	TDK	Varistors 385VAC 10% 14mm StandarD Learn More about TDK epcosvaristors	Datasheet	4,734In Stock 10,800Expected 28/10/2026	£0.405 £0.252 £0.199 £0.168 View £0.158 £0.15 £0.146 £0.136 £0.127	Min.: 1 Mult.: 1	Disc Varistor,StandarD 14mm	MOVs	PCB Mount	Radial	385 VAC	505 VDC	620 V	1.025 kV	14 mm	4.5 kA	80 J	240 pF	- 40 C	+ 105 C		Bulk
Varistors 40VAC 10% 14mm StandarD B72214S0400K551 TDK 1: £0.45 1,450In Stock	Mfr. Part No. B72214S0400K551 Mouser Part No 871-B72214S400K551	TDK	Varistors 40VAC 10% 14mm StandarD Learn More about TDK epcos lumileds led solutions	Datasheet	1,450In Stock	Cut Tape £0.45 £0.284 £0.23 £0.219 Reel £0.196 View £0.207 £0.192 £0.188 £0.185	Min.: 1 Mult.: 1 : 3,000	Disc Varistor,StandarD 14mm	MOVs	PCB Mount	Radial	40 VAC	56 VDC	68 V	135 V	14 mm	1 kA	13 J	3.55 nF	- 40 C	+ 105 C		Reel, Cut Tape
Varistors 420VAC 10% 14mm StandarD B72214S0421K101 TDK 1: £0.533 7,220In Stock	Mfr. Part No. B72214S0421K101 Mouser Part No 871-B72214S421K101	TDK	Varistors 420VAC 10% 14mm StandarD Learn More about TDK epcosvaristors	Datasheet	7,220In Stock	£0.533 £0.338 £0.276 £0.263 View £0.253 £0.231 £0.228 £0.207	Min.: 1 Mult.: 1	Disc Varistor,StandarD 14mm	MOVs	PCB Mount	Radial	420 VAC	560 VDC	680 V	1.12 kV	14 mm	4.5 kA	90 J	220 pF	- 40 C	+ 105 C		Bulk
Varistors 420VAC 10% 14mm StandarD B72214S0421K331 TDK 1: £0.578 1,278In Stock	Mfr. Part No. B72214S0421K331 Mouser Part No 871-B72214S421K331	TDK	Varistors 420VAC 10% 14mm StandarD Learn More about TDK epcos lumileds led solutions	Datasheet	1,278In Stock	Cut Tape £0.578 £0.377 £0.314 Reel £0.314 £0.311 View £0.308 £0.305	Min.: 1 Mult.: 1 : 3,000	Disc Varistor,StandarD 14mm	MOVs	PCB Mount	Radial	420 VAC	560 VDC	680 V	1.12 kV	14 mm	4.5 kA	90 J	290 pF	- 40 C	+ 105 C		Reel, Cut Tape
Varistors 60VAC 10% 14mm StandarD B72214S0600K101 TDK 1: £0.39 3,096In Stock 15,000Expected 28/10/2026	Mfr. Part No. B72214S0600K101 Mouser Part No 871-B72214S600K101	TDK	Varistors 60VAC 10% 14mm StandarD Learn More about TDK epcosvaristors	Datasheet	3,096In Stock 15,000Expected 28/10/2026	£0.39 £0.245 £0.197 £0.194 View £0.19 £0.188 £0.185 £0.18	Min.: 1 Mult.: 1	Disc Varistor,StandarD 14mm	MOVs	PCB Mount	Radial	60 VAC	85 VDC	100 V	165 V	14 mm	4.5 kA	17 J	1.65 nF	- 40 C	+ 105 C		Bulk
Varistors 95VAC 10% 14mm StandarD B72214S0950K101 TDK 1: £0.413 2,905In Stock	Mfr. Part No. B72214S0950K101 Mouser Part No 871-B72214S950K101	TDK	Varistors 95VAC 10% 14mm StandarD Learn More about TDK epcosvaristors	Datasheet	2,905In Stock	£0.413 £0.26 £0.21 £0.20 View £0.191 £0.181 £0.176 £0.164	Min.: 1 Mult.: 1	Disc Varistor,StandarD 14mm	MOVs	PCB Mount	Radial	95 VAC	125 VDC	150 V	250 V	14 mm	4.5 kA	25 J	870 pF	- 40 C	+ 105 C		Bulk
Varistors 275VAC 10% 14mm 125 DegC AdvanceD B72214U2271K501 TDK 1: £0.421 635In Stock 3,000Expected 07/12/2026	Mfr. Part No. B72214U2271K501 Mouser Part No 871-B72214U2271K501	TDK	Varistors 275VAC 10% 14mm 125 DegC AdvanceD Learn More about TDK b722 varistors	Datasheet	635In Stock 3,000Expected 07/12/2026	£0.421 £0.267 £0.217 £0.206 View £0.197 £0.187 £0.182 £0.18	Min.: 1 Mult.: 1	Disc Varistor, AdvanceD 125C, 85C/85%RH 14mm	MOVs	PCB Mount	Radial	275 VAC	350 VDC	430 V	710 V	17.5 mm	6 kA	110 J	440 pF	- 40 C	+ 125 C		Bulk
Varistors 320VAC 10% 14mm 125 DegC AdvanceD B72214U2321K501 TDK 1: £0.421 1,216In Stock	Mfr. Part No. B72214U2321K501 Mouser Part No 871-B72214U2321K501	TDK	Varistors 320VAC 10% 14mm 125 DegC AdvanceD Learn More about TDK b722 varistors	Datasheet	1,216In Stock	£0.421 £0.267 £0.217 £0.187 View £0.182 £0.18	Min.: 1 Mult.: 1	Disc Varistor, AdvanceD 125C, 85C/85%RH 14mm	MOVs	PCB Mount	Radial	320 VAC	420 VDC	510 V	840 V	17.5 mm	6 kA	136 J	370 pF	- 40 C	+ 125 C		Bulk
Varistors 460VAC 10% 20mm SuperioR MP B72220P3461K101 TDK 1: £1.26 476In Stock	Mfr. Part No. B72220P3461K101 Mouser Part No 871-B72220P3461K101	TDK	Varistors 460VAC 10% 20mm SuperioR MP Learn More about TDK epcosvaristors	Datasheet	476In Stock	£1.26 £0.841 £0.76 £0.702 View £0.676 £0.633 £0.61 £0.608 £0.575	Min.: 1 Mult.: 1	Disc Varistor, Multi-Pulse SuperioR 20mm	MOVs	PCB Mount	Radial	460 VAC	615 VDC	750 V	1.24 kV	22.5 mm	12 kA	445 J	660 pF	- 40 C	+ 105 C		Bulk
Varistors 385VAC 10% 20mm EnergetiQ B72220Q0381K101 TDK 1: £1.20 1,359In Stock	Mfr. Part No. B72220Q0381K101 Mouser Part No 871-B72220Q0381K101	TDK	Varistors 385VAC 10% 20mm EnergetiQ Learn More about TDK epcosvaristors	Datasheet	1,359In Stock	£1.20 £0.796 £0.701 £0.659 View £0.634 £0.602 £0.579 £0.576	Min.: 1 Mult.: 1	Disc Varistor, EnergetiQ 20mm	MOVs	PCB Mount	Radial	385 VAC	505 VDC	620 V	1.025 kV	22.5 mm	15 kA	315 J	780 pF	- 40 C	+ 105 C		Bulk
Varistors 175VAC 10% 20mm EnergetiQ B72220Q0171K101 TDK 1: £1.26 518In Stock	Mfr. Part No. B72220Q0171K101 Mouser Part No 871-B72220Q171K101	TDK	Varistors 175VAC 10% 20mm EnergetiQ Learn More about TDK epcosvaristors	Datasheet	518In Stock	£1.26 £0.841 £0.838 £0.821	Min.: 1 Mult.: 1	Disc Varistor, EnergetiQ 20mm	MOVs	PCB Mount	Radial	175 VAC	225 VDC	270 V	455 V	22.5 mm	15 kA	135 J	1.5 nF	- 40 C	+ 105 C		Bulk
Varistors 250VAC 10% 20mm EnergetiQ B72220Q0251K101 TDK 1: £1.20 968In Stock	Mfr. Part No. B72220Q0251K101 Mouser Part No 871-B72220Q251K101	TDK	Varistors 250VAC 10% 20mm EnergetiQ Learn More about TDK epcosvaristors	Datasheet	968In Stock	£1.20 £0.796 £0.751 £0.742 View £0.733 £0.716	Min.: 1 Mult.: 1	Disc Varistor, EnergetiQ 20mm	MOVs	PCB Mount	Radial	250 VAC	320 VDC	390 V	650 V	20 mm	8 kA	140 J	940 pF	- 40 C	+ 105 C		Bulk
Varistors 300VAC 10% 20mm EnergetiQ B72220Q0301K101 TDK 1: £1.26 1,030In Stock	Mfr. Part No. B72220Q0301K101 Mouser Part No 871-B72220Q301K101	TDK	Varistors 300VAC 10% 20mm EnergetiQ Learn More about TDK epcosvaristors	Datasheet	1,030In Stock	£1.26 £0.841 £0.743 £0.699 View £0.672 £0.651 £0.596 £0.595	Min.: 1 Mult.: 1	Disc Varistor, EnergetiQ 20mm	MOVs	PCB Mount	Radial	300 VAC	385 VDC	470 V	775 V	20 mm	15 kA	235 J	850 pF	- 40 C	+ 105 C		Bulk
Varistors 25VAC 10% 20mm StandarD B72220S0250K151 TDK 1: £0.826 256In Stock 2,000Expected 09/11/2026	Mfr. Part No. B72220S0250K151 Mouser Part No 871-B72220S0250K151	TDK	Varistors 25VAC 10% 20mm StandarD Learn More about TDK epcosvaristors	Datasheet	256In Stock 2,000Expected 09/11/2026	Cut Tape £0.826 £0.539 £0.445 £0.426 Reel £0.393 View £0.413 £0.382 £0.343	Min.: 1 Mult.: 1 : 2,000	Disc Varistor, StandarD 20mm	MOVs	PCB Mount	Radial	25 VAC	31 VDC	39 V	77 V	20 mm	2 kA	22 J	11.1 nF	- 40 C	+ 105 C		Reel, Cut Tape
Varistors 275VAC 10% 20mm StandarD B72220S0271K151 TDK 1: £0.713 1,575In Stock	Mfr. Part No. B72220S0271K151 Mouser Part No 871-B72220S0271K151	TDK	Varistors 275VAC 10% 20mm StandarD Learn More about TDK epcosvaristors	Datasheet	1,575In Stock	Cut Tape £0.713 £0.462 £0.45 Reel £0.45 £0.32 £0.299	Min.: 1 Mult.: 1 : 4,000	Disc Varistor, StandarD 20mm	MOVs	PCB Mount	Radial	275 VAC	350 VDC	430 V	710 V	20 mm	8 kA	151 J	850 pF	- 40 C	+ 105 C		Reel, Cut Tape
Varistors 300VAC 10% 20mm StandarD B72220S0301K501 TDK 1: £0.661 1,259In Stock	Mfr. Part No. B72220S0301K501 Mouser Part No 871-B72220S0301K501	TDK	Varistors 300VAC 10% 20mm StandarD Learn More about TDK epcosvaristors	Datasheet	1,259In Stock	Cut Tape £0.661 £0.427 £0.35 £0.335 Reel £0.307 View £0.317 £0.292 £0.278	Min.: 1 Mult.: 1 : 1,500	Disc Varistor, StandarD 20mm	MOVs	PCB Mount	Radial	300 VAC	385 VDC	470 V	775 V	20 mm	8 kA	173 J	780 pF	- 40 C	+ 105 C		Reel, Cut Tape
Varistors 320VAC 10% 20mm StandarD B72220S0321K551 TDK 1: £0.713 1,012In Stock	Mfr. Part No. B72220S0321K551 Mouser Part No 871-B72220S0321K551	TDK	Varistors 320VAC 10% 20mm StandarD Learn More about TDK epcosvaristors	Datasheet	1,012In Stock	Cut Tape £0.713 £0.462 £0.38 £0.363 Reel £0.324 View £0.351 £0.334 £0.32 £0.308	Min.: 1 Mult.: 1 : 4,000	Disc Varistor, StandarD 20mm	MOVs	PCB Mount	Radial	320 VAC	420 VDC	510 V	840 V	21.5 mm	8 kA	184 J	720 pF	- 40 C	+ 105 C		Reel, Cut Tape
Varistors 11VAC 10% 20mm StandarD B72220S0110K101 TDK 1: £0.766 2,058In Stock	Mfr. Part No. B72220S0110K101 Mouser Part No 871-B72220S110K101	TDK	Varistors 11VAC 10% 20mm StandarD Learn More about TDK epcosvaristors	Datasheet	2,058In Stock	£0.766 £0.498 £0.41 £0.394 View £0.373 £0.367 £0.352 £0.35	Min.: 1 Mult.: 1	Disc Varistor, StandarD 20mm	MOVs	PCB Mount	Radial	11 VAC	14 VDC	18 V	36 V	20 mm	2 kA	10 J	23 nF	- 40 C	+ 105 C		Bulk
Varistors 115VAC 10% 20mm StandarD B72220S0111K101 TDK 1: £0.766 1,685In Stock	Mfr. Part No. B72220S0111K101 Mouser Part No 871-B72220S111K101	TDK	Varistors 115VAC 10% 20mm StandarD Learn More about TDK epcosvaristors	Datasheet	1,685In Stock	£0.766 £0.498 £0.41 £0.394 View £0.373 £0.361 £0.352	Min.: 1 Mult.: 1	Disc Varistor, StandarD 20mm	MOVs	PCB Mount	Radial	125 VAC	150 VDC	180 V	300 V	20 mm	6.5 kA	60 J	1.52 nF	- 40 C	+ 105 C		Bulk
Varistors 14VAC 10% 20mm AEC-Q200 B72220S1140K102 TDK 1: £2.12 331In Stock	Mfr. Part No. B72220S1140K102 Mouser Part No 871-B72220S1140K102	TDK	Varistors 14VAC 10% 20mm AEC-Q200 Learn More about TDK automotive multilayer varistors	Datasheet	331In Stock	£2.12 £1.58 £1.45 £1.31 £1.10	Min.: 1 Mult.: 1	Disc Varistor, Auto-Grade 20mm	MOVs	PCB Mount	Radial	14 VAC	16 VDC	22 V	43 V	23 mm	2 kA	12 J	19 nF	- 40 C	+ 105 C	AEC-Q100	Bulk