72R Series - 72V PolySwitch® Lead-Free Radial Leaded Resettable PPTC

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Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, 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.

The 72R Series is designed to provide overcurrent protection to 72Vdc maximum voltage with a maximum 40A short circuit rating.

  • RoHS compliant and lead-free
  • 72Vdc Max Voltage w/max 40A Short Circuit rating
  • Resettable feature
  • Ideal for a broad range of general electronics using a low voltage power supply

  • Load protection on wide range of low voltage power supplies
  • Computers
  • Computer peripherals
  • General electronics

Access specifications, certifications, check availability and order parts below

Catalog #IHold (A)ITRIP
Max Volts
Trip Time
(deg C)
72R020X0.20.472400.411.834.412.2-40¦C - + 85¦CThrough HoleCheckOrder
72R025X0.250.572400.451.2531.252.5-40¦C - + 85¦CThrough HoleCheckOrder
72R030X0.30.672400.490.882.11.53-40¦C - + 85¦CThrough HoleCheckOrder
72R040X0.40.872400.560.551.2923.8-40¦C - + 85¦CThrough HoleCheckOrder
72R050X0.5172400.770.51.172.54-40¦C - + 85¦CThrough HoleCheckOrder
72R065X0.651.372400.880.310.723.255.3-40¦C - + 85¦CThrough HoleCheckOrder
72R075X0.751.572400.920.250.63.756.3-40¦C - + 85¦CThrough HoleCheckOrder
72R090X0.91.872400.990.20.474.57.2-40¦C - + 85¦CThrough HoleCheckOrder
72R110X1.12.272401.50.150.385.58.2-40¦C - + 85¦CThrough HoleCheckOrder
72R135X1.352.772401.¦C - + 85¦CThrough HoleCheckOrder
72R160X1.63.272401.90.090.22811.4-40¦C - + 85¦CThrough HoleCheckOrder
72R185X1.853.772402.¦C - + 85¦CThrough HoleCheckOrder
72R250X2.5572402.50.050.1312.515.6-40¦C - + 85¦CThrough HoleCheckOrder
72R300X3672402.80.040.11519.8Through HoleCheckOrder
72R375X3.757.572403.20.030.0818.7524-40¦C - + 85¦CThrough HoleCheckOrder

pdf icon Resettable PTC 72R Datasheet

The 72R Series is designed to provide overcurrent protection to 72Vdc maximum voltage with a maximum 40A short circuit rating...

pdf icon Product Selection Guide

Electronics Circuit Protection Product Selection Guide - A guide to selecting Littelfuse circuit protection components for electronic applications...

pdf icon Circuit Protection Technology Application Matrix

Littelfuse is the world leader in the design and manufacturing of fuses for the automotive, industrial, handheld, computer and telecom markets...