Dual Function Varistors

KEMET offers seven series of single-ended/radial and surface-mount, conductive polymer, aluminum, solid electrolytic capacitors

Image of KEMET Dual Function VaristorsKEMET's SMD and through-hole dual function varistors protect circuits from high energy discharges. The dual-function VM and VK series, which integrate a capacitor to suppress interference from devices such as DC electric motors, are ideal for protecting sensitive automotive electronics against electric-motor noise as well as potentially damaging, high-energy transients. The surface-mount VA series is also targeted at automotive applications. The plastic-encapsulated VP series have superior humidity resistance for use in medical instruments and equipment such as outdoor, mobile-communications infrastructures and professional or consumer white goods. The VC and high-temperature (up to 150°C) VE series are ideal for the suppression of inductive switching and other transient events.

The VG series has a capacitance of less than 400 pF and is ideal for protecting high-speed I/O lines. The through-hole, dual-function VM and VK series, and the surface-mount VA, VC, VE, and VG varistors are AEC-Q200 qualified.

VA Series Surface-Mount Varistors

KEMET's VA series of varistors are transient suppressors with temperature-independent suppression characteristics, enabling protection from -55 °C to +25 °C. VA varistors offer excellent transient energy distribution and require significantly less space and pad area than silicon TVS diodes, offering greater circuit-board layout flexibility for the designer.

Benefits
  • Surface mount form factor
  • Operating ambient temperature of -55°C to 125°C
  • Supply voltage 12 V, 24, and 42 V
  • Operating voltage range of 16 to 56 VDC
  • Available case sizes: 0805, 1206, 1210, 1812, 2220
  • Near zero inductance for the fastest speed of response to transient surges
  • Broad range of current and energy handling capabilities
  • Low clamping voltage – Uc
  • Non-plastic coating guarantees improved flammability rating
  • Non-sensitive to mildly activated fluxes
  • Barrier type end terminations solderable with Pb-free solders according to JEDEC J-STD-020C and IEC 60068-2-58
  • RoHS 2 2011/65/EC, REACH compliant
  • AEC-Q200 qualified Grade 1
Image of Kemet SMT Varistors

VC Series Surface-Mount Varistors

KEMET's VC series of low-voltage varistors are designed to protect sensitive electronic devices against high-voltage surges in the low-voltage region. VC varistors offer excellent transient energy absorption due to improved energy volume distribution and power dissipation.

Benefits
  • Surface mount form factor
  • Operating ambient temperature of -55°C to 125°C
  • Operating voltage range of 3 to 170 VDC
  • Available case sizes: 0603, 0805, 1206, 1210, 1812, 2220
  • Short response time
  • Broad range of current and energy handling capabilities
  • Low clamping voltage – Uc
  • Non-sensitive to mildly activated fluxes
  • Barrier type and terminations solderable with Pb-free solders according to JEDEC J-STD-020C and IEC 60068-2-58
  • UL 1499, 3rd edition & CSA C22.2 File E326499 Section 8
  • RoHS 2 2011/65/EC, REACH compliant
  • AEC-Q200 qualified Grade 1

VE Series Surface-Mount Varistors

KEMET's VE series of high-temperature, low-voltage varistors are designed to protect sensitive electronic devices against high-voltage surges in the low-voltage region. In addition to superior operating performance at rated 150°C (AEC-Q200 compliance), they offer excellent transient energy absorption due to improved energy volume distribution and power dissipation.

Benefits
  • Surface mount form factor
  • Operating ambient temperature of -55°C to 150°C
  • Superior operating performance rated at 150°C (AEC-Q200 compliance)
  • Operating voltage range of 3 V to 170 V
  • AC voltage range (VRMS) of 2 V to 130 V
  • High resistance to cyclic temperature stress
  • Low leakage currents after 1,000 hours rated at 150°C
  • High energy absorption capability
  • Available case sizes: 0603, 0805, 1206, 1210, 1812, 2220
  • Short response time
  • Broad range of current and energy handling capabilities
  • Low clamping voltage – Uc
  • Non-sensitive to mildly activated fluxes
  • Barrier type end terminations solderable with Pb-free solders according to JEDEC J-STD-020C and IEC 60068-2-58
  • UL 1499, 3rd edition & CSA C22.2 File E326499 Section 8
  • RoHS 2 2011/65/EC, REACH compliant
  • AEC-Q200 qualified Grade 1

VG Series Surface-Mount Varistors

KEMET's VG series of varistors are designed to suppress ESD events, including those specified in IEC 1000-4-2 or other standards used for electromagnetic compliance testing. VG varistors are typically applied to protect integrated circuits and other components at the circuit-board level, operating at 18 VDC or less. The manufacturing method, design, and materials of these devices result in capacitance characteristics suitable for high-frequency attenuation/low-pass filter circuit functions, providing suppression and filtering in a single device.

Benefits
  • Surface mount form factor
  • Operating ambient temperature of -55°C to 125°C
  • Operating voltage range of up to 18 VDC
  • Available cases sizes: 0603, 0805, 1206, 1210
  • Short response time
  • Characterized for inductance and capacitance
  • Dimensional and weight savings on the board
  • Non-sensitive to mildly activated fluxes
  • Barrier type end terminations solderable with Pb-free solders according to JEDEC J-STD-020C and IEC60068-2-58
  • Non-plastic coating guarantees improved flammability rating
  • Available in tape and reel for automatic pick and place
  • UL 1499, 3rd edition & CSA C22.2 File E326499 Section 8
  • RoHS 2 2011/65/EC, REACH compliant
  • AEC-Q200 qualified Grade 1

VP Series Surface-Mount Varistors

KEMET's VP series of low- and medium-voltage, plastic-encapsulated varistors are designed to protect electronic equipment against high-voltage surges in the low- and medium-voltage region. They offer direct, surface-mount equivalents to leaded disc varistors of 5 and 7 mm sizes. The thermoplastic encapsulation is non-flammable according to the standard UL 94 V-0. Contacts are made of a tinned copper sheet. These transient voltage suppressors cover an operating voltage VRMS from 11 V to 300 V, featuring maximum surge currents from 100 A to 1,200 A.

Benefits
  • Surface mount form factor
  • Operating ambient temperature of -40°C to 85°C
  • Operating voltage range of 14 to 385 VDC
  • Operating voltage (VRMS) of 11 V to 300 V
  • Available case sizes: 3255 and 4032
  • Dimensional and weight savings on the board
  • Non-flammable thermoplastic encapsulation according to the standard UL 94 V-0
  • UL 1449, 3rd edition & CSA C22.2. File E326499 Section 3
  • RoHS 2 2011/65/EC, REACH compliant
Image of Kemet VP Series Varistors

VK Series Leaded Varistors

KEMET's VK series of dual-function, protective devices protect against voltage surges in a low-voltage region and against high-frequency noise, replacing two components: a low-voltage varistor and a capacitor. KEMET's VK series incorporates a varistor function in the DC voltage range from 3 to 125 V (up to 170 V upon request) and function as high-frequency, by-pass capacitors operating in the capacitance range from 10 nF to 1 µF. Lower capacitance values are also available. They are intended for protection of all sensitive electronic devices experiencing both voltage transients and high-frequency noise produced by electromechanical devices such as buzzers, relays, and other devices.

Benefits
  • Through-hole form factor
  • Operating ambient temperature of -40°C to 125°C
  • Operating voltage range of 3 to 125 VDC
  • Operating voltage range (VRMS) 2 V to 95 V
  • Capacitance range at 1 kHz of 10 nF to 1 μF
  • Capacitor temperature characteristics X7R
  • Dimensional and weight savings on the board
  • One standard model size available, 6 x 9 mm
  • RoHS 2 2011/65/EC, REACH compliant
  • AEC-Q200 qualified Grade 1
Image of Kemet VK Series Varistors

VM Series Leaded Varistors

KEMET's VM series of dual-function protective devices protect against voltage surges in an automotive voltage region and against radio frequency noise. This component replaces two components: a low-voltage varistor and a capacitor. KEMET's VM series incorporates a varistor function in automotive applications in a voltage region of 12 V, 24 V, and 42 V and a function of a radio-frequency filtering capacitor in a high capacitance range from 0.47 to 1.5 µF, making them ideal for protection in automobile electronic applications.

Benefits
  • Through-hole form factor
  • Operating ambient temperature of -40°C to 125°C
  • Supply voltage of 12 V, 24 V, and 42 V
  • Operating voltage of 16 to 56 VDC
  • Capacitance range at 1 kHz of 0.47 to 1.5 μF
  • X7R capacitor temperature characteristics
  • Dimensional and weight savings on the board
  • RoHS 2 2011/65/EC, REACH compliant
  • AEC-Q200 qualified Grade 1
Image of Kemet VM Series Varistors

Dual Function Varistors

ImageManufacturer Part NumberDescriptionMaximum AC VoltsMaximum DC VoltsVaristor Voltage (Min)Available QuantityView Details
VC0603M300R002 datasheet linkVARISTOR 4V 30A 0603VC0603M300R002VARISTOR 4V 30A 06032V3V3.2V8175 - Immediate
VC0603M300R002 product page link
VC0603K300R017 datasheet linkVARISTOR 27V 30A 0603VC0603K300R017VARISTOR 27V 30A 060317V22V24.3V10784 - Immediate
VC0603K300R017 product page link
VC0603K300R011 datasheet linkVARISTOR 18V 30A 0603VC0603K300R011VARISTOR 18V 30A 060311V14V16.2V5475 - Immediate
VC0603K300R011 product page link
VC0603K300R014 datasheet linkVARISTOR 22V 30A 0603VC0603K300R014VARISTOR 22V 30A 060314V18V19.8V6630 - Immediate
VC0603K300R014 product page link
VC0805K121R014 datasheet linkVARISTOR 22V 120A 0805VC0805K121R014VARISTOR 22V 120A 080514V18V19.8V31723 - Immediate
VC0805K121R014 product page link
VC0805K121R025 datasheet linkVARISTOR 39V 120A 0805VC0805K121R025VARISTOR 39V 120A 080525V31V35.1V10005 - Immediate
VC0805K121R025 product page link
VC0805K121R020 datasheet linkVARISTOR 33V 120A 0805VC0805K121R020VARISTOR 33V 120A 080520V26V29.7V6882 - Immediate
VC0805K121R020 product page link
VA1206K201R030 datasheet linkVARISTOR 47V 200A 1206VA1206K201R030VARISTOR 47V 200A 120630V34V42.3V18186 - Immediate
VA1206K201R030 product page link
VC1206K121R050 datasheet linkVARISTOR 82V 120A 1206VC1206K121R050VARISTOR 82V 120A 120650V65V73.8V9924 - Immediate
VC1206K121R050 product page link
VC1206K201R030 datasheet linkVARISTOR 47V 200A 1206VC1206K201R030VARISTOR 47V 200A 120630V38V42.3V11320 - Immediate
VC1206K201R030 product page link
VC1206K201R017 datasheet linkVARISTOR 27V 200A 1206VC1206K201R017VARISTOR 27V 200A 120617V22V24.3V7500 - Immediate
VC1206K201R017 product page link
VC1206K201R025 datasheet linkVARISTOR 39V 200A 1206VC1206K201R025VARISTOR 39V 200A 120625V31V35.1V7795 - Immediate
VC1206K201R025 product page link
VC1206K121R035 datasheet linkVARISTOR 56V 120A 1206VC1206K121R035VARISTOR 56V 120A 120635V45V50.4V4505 - Immediate
VC1206K121R035 product page link
VC1206M151R006 datasheet linkVARISTOR 11V 150A 1206VC1206M151R006VARISTOR 11V 150A 12066V8V9.9V13395 - Immediate
VC1206M151R006 product page link
VA1812K801R030 datasheet linkVARISTOR 47V 800A 1812VA1812K801R030VARISTOR 47V 800A 181230V34V42.3V4477 - Immediate
VA1812K801R030 product page link
VC1210K301R030 datasheet linkVARISTOR 47V 300A 1210VC1210K301R030VARISTOR 47V 300A 121030V38V42.3V351 - Immediate
VC1210K301R030 product page link
VC1206K201R014 datasheet linkVARISTOR 27V 200A 1206VC1206K201R014VARISTOR 27V 200A 120614V18V19.8V3600 - Immediate
VC1206K201R014 product page link
VC1210K251R035 datasheet linkVARISTOR 56V 250A 1210VC1210K251R035VARISTOR 56V 250A 121035V45V50.4V524 - Immediate
VC1210K251R035 product page link
VA1210K401R014 datasheet linkVARISTOR 24V 400A 1210VA1210K401R014VARISTOR 24V 400A 121014V16V21.6V36 - Immediate
VA1210K401R014 product page link
VC0603K300R030 datasheet linkVARISTOR 47V 30A 0603VC0603K300R030VARISTOR 47V 30A 060330V38V42.3V0VC0603K300R030 product page link
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Published: 2017-01-17