SMD1812 Series PPTC Resettable Fuse | High-Current SMD Polyfuse for Power, Battery, and Automotive Protection
The SMD1812 Series PPTC fuse features a 1812 (4532 metric) SMD footprint and is designed for high hold current (up to 3.5A) and high voltage (up to 60V) protection applications. The fuse transitions to a high-resistance state during overcurrent events to protect downstream circuitry, then resets automatically once the fault is cleared. These fuses are ideal for lithium battery packs, power tools, power supply modules, PoE systems, electric mobility devices, and automotive control units. The series offers excellent thermal stability and endurance.
| JRPart Number | Hold Current |
Trip Current |
Rated Voltage |
Max Current |
Typical Power |
Maximum Time To Trip | Resistance | Size | ||
| I hold (A) | I trip (A) | V max (Vdc) | I max (A) | P dtyp. (W) | Current (A) | Time (Sec.) | R min (Ω) | R 1max (Ω) | ||
| JR010-1812RB | 0.1 | 0.3 | 60 | 100 | 0.8 | 0.5 | 1.5 | 0.75 | 15 | 1812 |
| JR014-1812RB | 0.14 | 0.34 | 60 | 100 | 0.8 | 1.5 | 0.15 | 0.65 | 6 | 1812 |
| JR020-1812RB | 0.2 | 0.4 | 30 | 100 | 0.8 | 8 | 0.02 | 0.35 | 5 | 1812 |
| JR030-1812RB | 0.3 | 0.6 | 30 | 100 | 0.8 | 8 | 0.1 | 0.25 | 3 | 1812 |
| JR035-1812RB | 0.35 | 0.7 | 16 | 100 | 0.8 | 8 | 0.1 | 0.2 | 2.5 | 1812 |
| JR035-30-1812RB | 0.35 | 0.7 | 30 | 100 | 0.8 | 8 | 0.1 | 0.2 | 2.5 | 1812 |
| JR050-1812RB | 0.5 | 1 | 15 | 100 | 0.8 | 8 | 0.15 | 0.15 | 1 | 1812 |
| JR050-24-1812RB | 0.5 | 1 | 24 | 100 | 0.8 | 8 | 0.15 | 0.15 | 1 | 1812 |
| JR050-30-1812RB | 0.5 | 1 | 30 | 100 | 0.8 | 8 | 0.15 | 0.15 | 1 | 1812 |
| JR050--60-1812RB | 0.5 | 1 | 60 | 40 | 0.8 | 8 | 0.15 | 0.15 | 1.4 | 1812 |
| JR075-1812RB | 0.75 | 1.5 | 13.2 | 100 | 0.8 | 8 | 0.2 | 0.09 | 0.45 | 1812 |
| JR075-24-1812RB | 0.75 | 1.5 | 24 | 100 | 0.8 | 8 | 0.2 | 0.09 | 0.45 | 1812 |
| JR075-33-1812RB | 0.75 | 1.5 | 33 | 100 | 0.8 | 8 | 0.2 | 0.09 | 0.45 | 1812 |
| JR110-1812RB | 1.1 | 2.2 | 8 | 100 | 0.8 | 8 | 0.3 | 0.05 | 0.25 | 1812 |
| JR110-16-1812RB | 1.1 | 2.2 | 16 | 100 | 0.8 | 8 | 0.3 | 0.05 | 0.25 | 1812 |
| JR110-24-1812RB | 1.1 | 2.2 | 24 | 100 | 0.8 | 8 | 0.3 | 0.05 | 0.25 | 1812 |
| JR110-33-1812RB | 1.1 | 2.2 | 33 | 100 | 0.8 | 8 | 0.3 | 0.05 | 0.25 | 1812 |
| JR125-1812RB | 1.25 | 2.5 | 8 | 100 | 0.8 | 8 | 0.4 | 0.05 | 0.2 | 1812 |
| JR125-16-1812RB | 1.25 | 2.5 | 16 | 100 | 0.8 | 8 | 0.4 | 0.05 | 0.2 | 1812 |
| JR150-1812RB | 1.5 | 3 | 8 | 100 | 0.8 | 8 | 0.5 | 0.04 | 0.16 | 1812 |
| JR150-16-1812RB | 1.5 | 3 | 16 | 100 | 0.8 | 8 | 0.5 | 0.04 | 0.16 | 1812 |
| JR150-24-1812RB | 1.5 | 3 | 24 | 100 | 0.8 | 8 | 0.5 | 0.04 | 0.16 | 1812 |
| JR160-1812RB | 1.6 | 2.8 | 8 | 100 | 0.8 | 8 | 1 | 0.03 | 0.13 | 1812 |
| JR160-16-1812RB | 1.6 | 2.8 | 16 | 40 | 1 | 8 | 1 | 0.03 | 0.13 | 1812 |
| JR200-1812RB | 2 | 4 | 8 | 100 | 0.8 | 8 | 2 | 0.02 | 0.1 | 1812 |
| JR200-12-1812RB | 2 | 4 | 12 | 100 | 0.8 | 8 | 2 | 0.02 | 0.1 | 1812 |
| JR200-16-1812RB | 2 | 4 | 16 | 100 | 0.8 | 8 | 2 | 0.02 | 0.1 | 1812 |
| JR260-1812RB | 2.6 | 5 | 8 | 100 | 1 | 8 | 2.5 | 0.015 | 0.05 | 1812 |
| JR260-12-1812RB | 2.6 | 5 | 12 | 100 | 1 | 8 | 2.5 | 0.015 | 0.06 | 1812 |
| JR260-16-1812RB | 2.6 | 5 | 16 | 100 | 1 | 8 | 2.5 | 0.015 | 0.06 | 1812 |
| JR300-1812RB | 3 | 5 | 6 | 100 | 1 | 8 | 4 | 0.012 | 0.04 | 1812 |
| JR350-1812RB | 3.5 | 6 | 6 | 100 | 1 | 10 | 5 | 0.008 | 0.035 | 1812 |
| JRPart Number | Hold Current |
Trip Current |
Rated Voltage |
Max Current |
Typical Power |
Maximum Time To Trip | Resistance | Size | ||
| I hold (A) | I trip (A) | V max (Vdc) | I max (A) | P dtyp. (W) | Current (A) | Time (Sec.) | R min (Ω) | R 1max (Ω) | ||
| JR190-1812RZB | 1.9 | 3.8 | 6 | 50 | 1.5 | 8 | 5 | 0.003 | 0.025 | 1812 |
| JR190-12-1812RZB | 1.9 | 3.8 | 12 | 50 | 1.5 | 8 | 5 | 0.003 | 0.025 | 1812 |
| JR260-1812RZB | 2.6 | 5.2 | 6 | 50 | 1.5 | 8 | 5 | 0.003 | 0.024 | 1812 |
| JR260-12-1812RZB | 2.6 | 5.2 | 12 | 50 | 1.5 | 8 | 5 | 0.003 | 0.024 | 1812 |
| JR300-1812RZB | 3 | 6 | 6 | 50 | 1.5 | 15 | 2 | 0.003 | 0.022 | 1812 |
| JR300-12-1812RZB | 3 | 6 | 12 | 50 | 1.5 | 15 | 2 | 0.003 | 0.022 | 1812 |
| JR350-1812RZB | 3.5 | 7 | 6 | 50 | 1.5 | 17.5 | 2 | 0.003 | 0.02 | 1812 |
| JR350-12-1812RZB | 3.5 | 7 | 12 | 50 | 1.5 | 17.5 | 2 | 0.003 | 0.02 | 1812 |
| JR400-1812RZB | 4 | 8 | 6 | 50 | 1.8 | 20 | 2 | 0.003 | 0.018 | 1812 |
| JR400-12-1812RZB | 4 | 8 | 12 | 50 | 1.8 | 20 | 2 | 0.003 | 0.018 | 1812 |
| JR450-1812RZB | 4.5 | 9 | 6 | 50 | 1.8 | 22.5 | 2 | 0.003 | 0.016 | 1812 |
| JR450-12-1812RZB | 4.5 | 9 | 12 | 50 | 1.8 | 22.5 | 2 | 0.003 | 0.016 | 1812 |
| JR500-1812RZB | 5 | 10 | 6 | 50 | 1.8 | 25 | 2 | 0.003 | 0.014 | 1812 |
| JR500-12-1812RZB | 5 | 10 | 12 | 50 | 1.8 | 25 | 2 | 0.003 | 0.014 | 1812 |
| JR550-1812RZB | 5.5 | 11 | 6 | 50 | 1.8 | 27.5 | 2 | 0.002 | 0.012 | 1812 |
| JR550-12-1812RZB | 5.5 | 11 | 12 | 50 | 1.8 | 27.5 | 2 | 0.002 | 0.012 | 1812 |
| JR600-1812RZB | 6 | 12 | 6 | 50 | 1.8 | 30 | 2 | 0.002 | 0.01 | 1812 |
| JR600-12-1812RZB | 6 | 12 | 12 | 50 | 1.8 | 30 | 2 | 0.002 | 0.01 | 1812 |
| JR650-1812RZB | 6.5 | 13 | 6 | 50 | 1.8 | 32.5 | 2 | 0.002 | 0.008 | 1812 |
| JR650-12-1812RZB | 6.5 | 13 | 12 | 50 | 1.8 | 32.5 | 2 | 0.002 | 0.008 | 1812 |
| JR700-1812RZB | 7 | 14 | 6 | 50 | 2 | 35 | 2 | 0.001 | 0.007 | 1812 |
| JR700-12-1812RZB | 7 | 14 | 12 | 50 | 2 | 35 | 2 | 0.001 | 0.007 | 1812 |
| JR750-1812RZB | 7.5 | 15 | 6 | 50 | 2 | 37.5 | 2 | 0.001 | 0.006 | 1812 |
| JR750-12-1812RZB | 7.5 | 15 | 12 | 50 | 2 | 37.5 | 2 | 0.001 | 0.006 | 1812 |
| JR800-1812RZB | 8 | 16 | 6 | 50 | 2 | 40 | 2 | 0.0008 | 0.005 | 1812 |
| JR800-12-1812RZB | 8 | 16 | 12 | 50 | 2 | 40 | 2 | 0.0008 | 0.005 | 1812 |
| JR850-1812RZB | 8.5 | 17 | 6 | 50 | 2.2 | 42.5 | 2 | 0.0008 | 0.004 | 1812 |
| JR850-12-1812RZB | 8.5 | 17 | 12 | 50 | 2.2 | 42.5 | 2 | 0.0008 | 0.004 | 1812 |
| JR900-1812RZB | 9 | 18 | 6 | 50 | 2.2 | 45 | 2 | 0.0005 | 0.005 | 1812 |
| JR900-12-1812RZB | 9 | 18 | 12 | 50 | 2.2 | 45 | 2 | 0.0005 | 0.005 | 1812 |
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