Circuit Protection: ZNR Transient/Surge Absorbers

ZNR Transient/Surge Absorbers design engineers Panasonic
ZNR Transient Surge Absorbers Varistor Zener Diodes

ZNR stands for Zinc–oxide Non-linear Resistor. Panasonic invented the ZNR Surge Absorber in 1968 and was a pioneer in the use of Zinc Oxide as a Surge Absorber. Panasonic ZNR Surge Absorbers are the top brand of Surge Absorbers and have been for over 40 years.

ZNR devices are used to protect electronic equipment against voltage surges. The equivalent electrical circuit of the ZNR would be back-to back zener diodes and a parallel connected capacitor, that’s three components doing the job of one ZNR. ZNR Surge Absorbers can save board space and cost.

Line Up

Series/TypeData SheetImageFeaturesVaristor Voltage (v)Maximum Peak Current (A)RoHS (Compliance Certificate)REACH (Report of Confirmation)
         
Varistor Type: D Series: E*Large withstanding surge current capability in compact sizes
*Large Energy Handling Capability absorbing transient overvoltages in compact sizes
*Wide range of varistor voltages
200 to 1100V600 to 10000CertificateReport of Confirmation
Varistor Type: D Series:V*Standard type with radial leads for general surge protect applications
*For Surge Pulse
18 to 1800V125 to 10000CertificateReport of Confirmation
Varistor SMD type Series HF*Suitable for requirements of Automotive
*Meet for Load Damp Surge
*Meet for Load Dump Surge Test (JASO D 001-94)
20 to 23.2, 272n/aCertificateReport of Confirmation
Varistor SMD type Series VF*Large withstanding surge current capability, in compact size
*Low clamping voltage
22 to 470125 to 600 (at 8/20us)CertificateReport of Confirmation
Varistor Type: SC*Very large surge withstanding capability with a compact size
*Fast response to steep impulse voltage
200 to 950ln 20kA lmax. 40kA(at 8/20us)CertificateReport of Confirmation
Varistor Type: E*Very large surge withstanding capability with a compact size
*Direct mounting on boards like a power distribution board available
*Fast response to steep impulse voltage
200 to 11005000 to 20000CertificateReport of Confirmation
Varistor UL and CSA Recoqnized with Tab, Type:CK*UL and CSA recognized components
*High energy handling capability (210 to 750 joules),Large withstanding peak current(25 to 30kA)
*Common terminals for electrical connection and mounting
200 to 110020 to 25CertificateReport of Confirmation
Varistor Type:JStack-type for heavy surge energy application(High power induced load and so on)560 to 1250n/aCertificateReport of Confirmation
Varistor Type:P*Plug-in type with deterioration indicator
*For application to industrial equipment
250 to 10005000 (at 8/20us)N/AN/A
Varistor Type:GFor protection to switching surge of high voltage(3.3,6.6kV)equipment5 to 17kV21kA to 5000N/AN/A
Varistor For Thyristor ProtectionThristor protection against swithing surge transformer510 to 2500n/aN/AN/A
Varistor UnitSurge absorber with connected ZNRs and circuit breaker in box22 to 10005000 to 50000N/AN/A

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