LS Series - Polymer Protected Zener Diode

Series: LS
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Help improve output voltage clamping – even when input voltage is high and diode currents are large. Our PolyZen devices are polymer-enhanced, precision Zener diode micro-assemblies. The advanced feature of these devices is that the Zener diode is thermally coupled to a resistively non-linear PPTC (Polymer Positive Temperature Coefficient) layer. This PPTC layer is fully integrated into the devices and is electrically in series between VIN and the diode-clamped VOUT. These offer resettable protection against multi-watt fault events without the need for multi-watt heat sinks. Use PolyZen devices to help protect low-power DC applications from damage caused by inductive voltage spikes, voltage transients, incorrect power supplies, and reverse bias.

Multi-Watt and Time Delayed Protection

  • Overvoltage transient suppression
  • Stable VZ vs. fault current
  • Time delayed, overvoltage trip
  • Time delayed, reverse bias trip
  • Multi-Watt power handling capability
  • Integrated device construction
  • RoHS compliant


  • Stable Zener diode helps shield downstream electronics from overvoltage and reverse bias
  • Trip events shut out overvoltage and reverse bias sources
  • Analog nature of trip events helps minimize damage from upstream inductive spikes
  • Minimal power dissipation requirements
  • Single component placement


  • DC power port protection in portable electronics
  • DC power port protection for systems using barrel jacks for power input
  • Internal overvoltage and transient suppression
  • DC output voltage regulation
  • Tablet PCs and portable electronics

Access specifications, certifications, check availability and order parts below

Catalog #VZ Min (V)VZ Typ (V)VZ Max (V)IZT (A)IHold (A)RTYP
VINT Max (VDC)Test Currents (A)IFLT max (A)Test Voltage (VDC)Max Operating Temp (°C)Packaging
Package QuantityProduct
ZEN056V115A24LS5.455.65.750. & Reel3000Product SpecificationCheckOrder
ZEN056V230A16LS5.455.65.750. & Reel3000Product SpecificationCheckOrder
ZEN059V130A24LS5.85.960. & Reel3000Product SpecificationCheckOrder
ZEN065V130A24LS6.356.56.650. & Reel3000Product SpecificationCheckOrder
ZEN065V230A16LS6.356.56.650. & Reel3000Product SpecificationCheckOrder
ZEN098V130A24LS9.69.8100. & Reel3000Product SpecificationCheckOrder
ZEN098V230A16LS9.69.8100. & Reel3000Product SpecificationCheckOrder
ZEN132V075A48LS13.213.413.650.10.750.280.45483+2/-40+48/-1685Tape & Reel3000Product SpecificationCheckOrder
ZEN132V230A16LS13.213.413. & Reel3000Product SpecificationCheckOrder
ZEN164V130A24LS16.116.416. & Reel3000Product SpecificationCheckOrder
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s)
RF1972-000 ZEN056V115A24LS RoHS No 02/06/2017 PbFree No 02/06/2017 Yes
RF1491-000 ZEN056V230A16LS RoHS No 11/10/2016 PbFree No 11/10/2016 CoC_RoHS9_RF1491-000_-ZEN056V230A16LS-_02-26-2019 REACH209_Declaration_-Contain-_RF1491-000_-ZEN056V230A16LS-_08-11-2020 Yes
RF2103-000 ZEN059V130A24LS RoHS No 02/06/2017 PbFree No 02/06/2017 CoC_RoHS9_RF2103-000_-ZEN059V130A24LS-_11-17-2020 REACH209_Declaration_-Contain-_RF2103-000_-ZEN059V130A24LS-_11-17-2020 Yes
RF1493-000 ZEN065V130A24LS RoHS No 12/05/2016 PbFree No 12/05/2016 CoC_RoHS9_RF1493-000_-ZEN065V130A24LS-_10-12-2018 REACH209_Declaration_-Contain-_RF1493-000_-ZEN065V130A24LS-_08-12-2020
RF1492-000 ZEN065V230A16LS RoHS No 02/06/2017 PbFree No 02/06/2017 Yes
RF1706-000 ZEN132V075A48LS RoHS No 11/25/2016 PbFree No 11/25/2016 CoC_RoHS9_RF1706-000_-ZEN132V075A48LS-_10-28-2019 REACH211_Declaration_(Contain)_RF1706-000_(ZEN132V075A48LS)_04-26-2021 Yes
RF1496-000 ZEN132V230A16LS RoHS No 02/06/2017 PbFree No 02/06/2017 CoC_RoHS9_RF1496-000_-ZEN132V230A16LS-_3-12-2020 REACH205_Declaration_-Contain-_RF1496-000_-ZEN132V230A16LS-_3-12-2020 Yes
RF1495-000 ZEN164V130A24LS RoHS No 07/16/2007 PbFree No 07/16/2007 Yes
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