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Littelfuse 0451200MRL Surface Mount Fuse

The Littelfuse Nano[2] SMF Fuse (series 451/453) is a very small, square surface mount fuse ideal for space-constrained applications. This fuse provides fast-acting overcurrent protection and is available in a surface mount holder. It is recognized under Underwriters Laboratories and certified by CSA, making it suitable for a variety of industrial and consumer electronics applications. RoHS compliant versions are available with the 'L' suffix. The fuse offers interrupting ratings ranging from 50 to 300 amperes depending on the amperage rating.

Authorized Distributors
Source:Newark
Part No:0451.200MRL
Stock:692
Inv Date:05-28-2026
Price: Unit price: $4.97
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Source:DigiKey
Part No:0451.200MRL
Stock:2627
Inv Date:05-28-2026
Price: Unit price: $5.16
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Part No:0451.200MRL
Stock:42
Inv Date:05-28-2026
Price: Unit price: $4.6
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Part No:0451.200MRL
Stock:710
Inv Date:05-28-2026
Price: Unit price: $2.18
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Part No:0451.200MRL
Stock:710
Inv Date:05-28-2026
Price: Unit price: $2.18
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Part No:0451.200MRL
Stock:0
Inv Date:05-28-2026
Price: Unit price: $0.885
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Part No:0451.200MRL
Stock:460
Inv Date:05-29-2026
Price: N/A
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Littelfuse 0451200MRL Surface Mount Fuse Specifications:

  • Operating Temperature: –55°C to 125°C
  • Shock: MIL-STD-202, Method 213, Test Condition I (100 G’s peak for 6 milliseconds)
  • Vibration: MIL-STD-202, Method 201 (10–55 Hz)
  • Salt Spray: MIL-STD-202, Method 101, Test Condition B
  • Insulation Resistance: MIL-STD-202, Method 302, Test Condition A (10,000 ohms minimum)
  • Resistance to Soldering Heat: MIL-STD-202, Method 210, Test Condition B (10 sec. at 260°C)
  • Thermal Shock: MIL-STD-202, Method 107, Test Condition B (–65 to 125°C)
  • Moisture Resistance: MIL-STD-202, Method 106, High Humidity (90-98RH), Heat (65°C)
  • Body Material: Ceramic
  • Termination Material: Tin-Lead Alloy (RoHS Compliant: Gold over Nickel Plated C, Silver Plated Caps)
  • Wave Solder Temperature: 260°C, 10 seconds maximum
  • Reflow Solder Temperature: 260°C, 30 seconds maximum
  • Solderability: MIL-STD-202, Method 208
  • Interrupting Ratings (1/16 – 8A): 50 amperes at 125 VAC/VDC
  • Interrupting Ratings (10A): 35 amperes at 125 VAC/50 amperes at 125 VDC
  • Interrupting Ratings (12A – 15A): 50 amperes at 65 VAC/VDC

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Frequently Asked Questions

Where can I buy Littelfuse 0451200MRL?

You can click on the BUY or RFQ button to purchase 0451200MRL from an authorized Littelfuse distributor.

How do I troubleshoot issues or seek technical support for part 0451200MRL?

You can download the 0451200MRL datasheet or visit the Littelfuse website for support.

Who is the manufacturer of 0451200MRL?

Littelfuse

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