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1812L110/33MR Littelfuse 1812L110/33MR is a polymeric PTC resettable fuse rated for 33V max and 1.1A hold current. It features a fast trip time of 500 ms and is packaged in a compact 1812 surface mount form.
Mfr Part #:

1812L110/33MR

Available from 7 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
Littelfuse 1812L110/33MR is a polymeric PTC resettable fuse rated for 33V max and 1.1A hold current. It features a fast trip time of 500 ms and is packaged in a compact 1812 surface mount form.
Total Stock: 43,933 pcs

1812L110/33MR Available from 7 distributors

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1812L110/33MR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Current
Halogen Free
Hold Current
Length
Max Current
Max Voltage
Mounting Type
Operating Temperature
Package / Case
Power Dissipation
Resistance
Resistance - Initial (R Min)
Resistance - Post Trip (R1 Max)
Tape & Reel
Thickness (Max)
Time to Trip
Trip Current
Type
Voltage
Width

1812L110/33MR Description

Short technical summary and product information.

The Littelfuse 1812L110/33MR is a surface mount polymeric PTC resettable fuse from the 1812L series, designed for overcurrent protection in a wide range of electronic applications. It offers a hold current of 1.1 A and a trip current of 1.95 A, with a maximum voltage rating of 33 V and a maximum interrupt current of 20 A. The device has a typical power dissipation of 0.8 W and a fast time-to-trip of 500 ms at 8 A.

 

This PTC fuse features low resistance values, with an initial minimum resistance of 60 mΩ and a maximum post-trip resistance of 200 mΩ, ensuring minimal power loss during normal operation. It is housed in a standard 1812 (4532 Metric) concave package, suitable for automated surface mount assembly. The component is RoHS compliant, lead-free, and halogen-free, meeting modern environmental standards.

 

Typical applications include plug-and-play protection for motherboards and peripherals, USB port protection, PCI cards, and game console port protection. The device operates over a temperature range of -40°C to 85°C, making it suitable for both consumer and industrial environments.

1812L110/33MR Quick Information

Product Type: PTC Resettable Fuse
Series: 1812L
Canonical Name: Littelfuse 1812L Series PTC Resettable Fuse, 33V, 1.1A Hold, 1812 Package
Subcategory: Surface Mount Polymeric PTC

1812L110/33MR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Lead Free

1812L110/33MR Features

  • 1.1 A hold current rating.
  • 1.95 A trip current threshold.
  • 33 V maximum voltage rating.
  • Fast 500 ms trip time.
  • RoHS compliant and halogen free.

1812L110/33MR Applications

  • USB peripheral overcurrent protection.
  • Motherboard plug and play circuits.
  • PCI card port protection.
  • Game console port protection.

1812L110/33MR FAQs

6 frequently asked questions generated from this part’s specifications.
What is the hold current of the 1812L110/33MR?

The hold current is 1.1 A.

What is the trip current of this PTC fuse?

The trip current is 1.95 A.

What is the maximum voltage rating?

The maximum voltage is 33 V.

What is the package size of the 1812L110/33MR?

It is a surface mount 1812 (4532 Metric) concave package.

What is the operating temperature range?

The operating temperature range is -40°C to 85°C.

Is the 1812L110/33MR RoHS compliant?

Yes, it is RoHS compliant, lead-free, and halogen-free.

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