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12 Series
This 12 series is standard. The diameter is 2.5 mm.
Rated Current: 1.5A～2A (250VAC)
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22 Series
The diameter is 3.3 mm. This 22 series has the highest rated current.
Rated Current : 2.5A～5A (250VAC)
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32 Series
The diameter is 2 mm. This 32 series is slightly smaller than 12 series.
Rated Current : 0.8A～1A（250VAC）
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37 Series
This 37 series has a DC rating for second protection of protection circuit of Lithium ion rechargeable batteries. The diameter is 2 mm. The high DC current will be applicable.
Rated Current : 8A～11A（50VDC）
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44 Series
The diameter is 1.65 mm. This 44 series is even smaller than 32 series.
Rated Current : 0.5A～1A（250VAC）
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47 Series
This 47 series has a DC rating for second protection of protection circuit of Lithium ion rechargeable batteries. The diameter is 2 mm. This 47 series is smaller than 37 series.
Rated Current : 6A（50VDC）
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6 Series
The diameter is 1.4 mm. This 6 series is the one of world’s smallest thermal cutoffs. It is useful in narrow spaces.
Rated Current : 0.3A～0.5A（250VAC）
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X Series
This X series has the highest rated current in radial lead type. The case length is 8.5 mm.
Rated Current : 3A (250VAC)
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U2 Series
This U2 series is standard of radial lead type. The case length is 5.7 mm.
Rated Current : 2A～2.5A (250VAC)
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S Series
This S series is the smallest series in radial lead type. The case length is 4 mm.
Rated Current : 0.8A～1A (250VAC)
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SK Series
This SK series has higher thermal sensitivity due to ceramic case in radial lead type. The case length is 4 mm.
Rated Current : 0.8A (250VAC)
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SC Series
This SC series has higher thermal sensitivity due to ceramic case in radial lead type, and it can be assembled by flow soldering due to its higher soldering heat resistance. The case length is 4 mm.
Rated Current : 1A (250VAC)
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NC Series
The case of NC series can be fixed by screwing, and it can be assembled by flow soldering due to its higher soldering heat resistance. The case length is 11 mm.
Rated Current : 2A (250VAC)
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A5MC
This A5MC series is a thermal cutoff/ resistor assembly which has an overheat protection function. And this series was developed as a high-reliable inrush current limiting device for switching mode power supplies.
Rated Current : 1.6W
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Y5JA
This Y5JA series is a thermal cutoff/ resistor assembly which consists of two coil-winding resistors and a thermal cutoff as an inrush current limiting device for switching mode power supplies. It realizes reducing mounting space and decreasing the number of components.
Rated Current : 2.8W
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EC Series
This series is a thermoprotector with resistor. It can open the circuit in both cases of abnormal temperature and circuit breakdown in second protection circuit of Lithium ion rechargeable battery.
Rated Current：12A（32VDC）
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BZ05 Series
This BZ05 series is a fusing resistor that can accept high current and open the circuit quickly by signal current.
Rated Current：75A（60VDC）
