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Littelfuse 1812L11033MR Resettable PTC Device

The Littelfuse 1812L Series PTC is a resettable overcurrent protection device designed for surface mount applications. It provides a convenient and reliable solution for protecting sensitive circuits from damage caused by overcurrent conditions. The device is halogen-free and features a wide operating temperature range, making it suitable for a variety of industrial and consumer applications. It is commonly used in motherboards and peripheral protection circuits.

Authorized Distributors
Source:DigiKey
Part No:1812L110/33MR
Stock:2622
Inv Date:05-28-2026
Price: Unit price: $0.74
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Part No:1812L110/33MR
Stock:30877
Inv Date:05-29-2026
Price: Unit price: $0.62
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Part No:1812L110/33MR
Stock:125
Inv Date:05-28-2026
Price: Unit price: $0.53
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Part No:1812L110/33MR
Stock:0
Inv Date:05-28-2026
Price: Unit price: $0.2586
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Part No:1812L110/33MR
Stock:0
Inv Date:05-28-2026
Price: Unit price: $0.2586
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Part No:1812L110/33MR
Stock:35000
Inv Date:05-28-2026
Price: Unit price: $0.305
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Source:Arrow EU
Part No:1812L110/33MR
Stock:134000
Inv Date:05-29-2026
Price: N/A
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Part No:1812L110/33MR
Stock:9
Inv Date:05-29-2026
Price: N/A
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Littelfuse 1812L11033MR Resettable PTC Device Specifications:

  • Hold Current: Varies with temperature, see datasheet
  • Trip Current: Varies with temperature, see datasheet
  • Maximum Voltage: 30 Vdc
  • Maximum Fault Current: 100 A
  • Typical Power Dissipation: 0.8 W
  • Minimum Resistance: 1.50 Ω
  • Maximum Resistance: 1.60 Ω
  • Time to Trip: 33 seconds
  • Resistance Typ: 0.20 Ω
  • Resistance Max: 5.000 Ω
  • Operating Temperature Range: -40°C to +85°C
  • Maximum Device Surface Temperature: 125°C
  • Passive Aging: +85°C, 1000 hours, -/+5% typical resistance change
  • Humidity Aging: +85°C, 85% RH, 1000 hours, -/+5% typical resistance change
  • Thermal Shock: MIL–STD–202, Method 107G, +85°C/-40°C 20 times, -30% typical resistance change
  • Solvent Resistance: MIL–STD–202, Method 215, No change
  • Vibration: MIL–STD–883C, Method 2007.1, Condition A, No change
  • Moisture Sensitivity Level: Level 1, J–STD–020C

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Frequently Asked Questions

Where can I buy Littelfuse 1812L11033MR?

You can click on the BUY or RFQ button to purchase 1812L11033MR from an authorized Littelfuse distributor.

How do I troubleshoot issues or seek technical support for part 1812L11033MR?

You can download the 1812L11033MR datasheet or visit the Littelfuse website for support.

Who is the manufacturer of 1812L11033MR?

Littelfuse

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