GTCS25 Series - Low to Medium Surge GDT, 2 Terminal, 5 mm, Surface Mount

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Disclaimer Notice

Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

Helping to protect telecom equipment. Our GDTs offer surge protection over a broad voltage range, and low capacitance and many form factors including new surface-mount devices that make them suitable for many different applications and surge protection on power lines. Their low capacitance also reduces signal distortion.

High Accuracy, Low Insertion Loss

  • Low capacitance and insertion loss
  • Crowbar device with low arc voltage
  • High accuracy spark-over voltages for high precision designs
  • Optional fail-short mechanisms
  • RoHS Compliant, Halogen free

Overvoltage Fault Protection

  • Provides overvoltage fault protection against damage caused by high energy surges
  • Suitable for use in sensitive equipment due to impulse sparkover response
  • Suitable for high-frequency applications
  • New surface-mount devices for automated manufacturing

Telecommunications, Industrial, and Consumer Electronics

  • MDF modules
  • xDSL equipment
  • RF systems
  • Antennas
  • Base stations
Industrial and Consumer Electronics
  • Power supplies
  • Surge protectors
  • Alarm systems
  • Irrigation systems

Access specifications, certifications, check availability and order parts below

Catalog #DC Sparkover Voltage Tolerance (%)VNom Spark
@ 100V/μs
@ 1kV/μs
Capacitance (Co) (pF)Impulse Discharge Current @8/20μs (kA)ElectrodesFailsafeOperating Temp (Deg C)Packaging
Partner ECAD ModelsStockSamplesCompare
GTCS25-301M-R02-2±20%300<=800<=900<12.52Without-40 – 90Tape & ReelProduct SpecificationGTCS25-301M-R02-2CheckOrder
GTCS25-351M-R02±20%350<=900<=1000<12.52Without-40 – 90Tray|Tray/BoxProduct SpecificationGTCS25-351M-R02CheckOrder
GTCS25-351M-R05±20%350<=900<=1000<152Without-40 – 90Tray|Tray/BoxProduct SpecificationGTCS25-351M-R05CheckOrder
GTCS25-471L-R05±15%470<=1050<=1150<152Without-40 – 90Tray|Tray/BoxProduct SpecificationGTCS25-471L-R05CheckOrder
GTCS25-471M-R02-2±20%470<=1050<=1150<12.52Without-40 – 90Tape & ReelProduct SpecificationGTCS25-471M-R02-2CheckOrder
GTCS25-551M-R02-2±20%550<=1300<=1400<12.52Without-40 – 90Tape & ReelProduct SpecificationGTCS25-551M-R02-2CheckOrder
GTCS25-750M-R02±20%75<=450<=550<12.52Without-40 – 90Tray/Box|TrayProduct SpecificationGTCS25-750M-R02CheckOrder
GTCS25-900M-R02±20%90<=450<=550<12.52Without-40 – 90Tray|Tray/BoxProduct SpecificationGTCS25-900M-R02CheckOrder
GTCS25-900M-R02-2±20%90<=450<=550<12.52Without-40 – 90Tape & ReelProduct SpecificationGTCS25-900M-R02-2CheckOrder
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s)
RF4068-000 GTCS25-301M-R02-2 RoHS No 02/18/2019 PbFree No 02/18/2019 No
RF0842-000 GTCS25-351M-R02 RoHS No 02/18/2019 PbFree No 02/18/2019 No
RF4435-000 GTCS25-351M-R05 RoHS No 11/12/2018 PbFree No 11/12/2018 CoC_RoHS10_RF4435-000_-GTCS25-351M-R05-_11-16-2018 REACH191_Declaration_RF4435-000_-GTCS25-351M-R05-_11-16-2018 No
Does not Contain
RF3827-000 GTCS25-471L-R05 RoHS No 02/18/2019 PbFree No 02/18/2019 No
RF4249-000 GTCS25-471M-R02-2 RoHS No 02/18/2019 PbFree No 02/18/2019 No
RF2163-000 GTCS25-551M-R02-2 RoHS No 02/18/2019 PbFree No 02/18/2019 No
RF4310-000 GTCS25-750M-R02 RoHS No 12/19/2018 PbFree No 12/19/2018 CoC_RoHS10_RF4310-000_-GTCS25-750M-R02-_02-27-2019 REACH197_Declaration_RF4310-000_-GTCS25-750M-R02-_02-27-2019 Yes
Does not Contain
RF1319-000 GTCS25-900M-R02 RoHS No 02/18/2019 PbFree No 02/18/2019 REACH201_Declaration_RF1319-000_-GTCS25-900M-R02-_08-16-2019 No
Does not Contain
RF2027-000 GTCS25-900M-R02-2 RoHS No 10/26/2016 PbFree No 10/26/2016 CoC_RoHS10_RF2027-000_-GTCS25-900M-R02-2-_07-03-2020 REACH209_Declaration_RF2027-000_-GTCS25-900M-R02-2-_07-03-2020 Yes
Does not Contain
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