SMD1812Low 系列
|
特征 ▶超低电阻 ▶符合RoHS标准且无铅 ▶无卤素 ▶对故障电流的快速响应 ▶对称设计 |
应用 ▶USB端口保护-USB 2.0、3.0和OTG ▶锂离子/锂聚合物电池组 ▶PDA/数码相机 ▶计算机外设 ▶PC主板即插即用保护 |
产品规格书
电气特性（25℃）：
| Model | I-hold | I-trip | Vmax | Imax | Pd typ | Max. Time to trip | R0 min | R1max | |
| Current | Time | ||||||||
| (A) | (A) | (Vdc) | (A) | (W) | (A) | (Sec.) | (Ohm) | (Ohm) | |
| D-1812-190L | 1.90 | 3.80 | 9.0 | 50.0 | 1.50 | 8.00 | 5.00 | 0.004 | 0.024 |
| D-1812-190/12L | 1.90 | 3.80 | 12.0 | 50.0 | 1.50 | 8.00 | 5.00 | 0.004 | 0.024 |
| D-1812-260L | 2.60 | 5.20 | 9.0 | 50.0 | 1.50 | 8.00 | 5.00 | 0.004 | 0.020 |
| D-1812-260/12L | 2.60 | 5.20 | 12.0 | 50.0 | 1.50 | 8.00 | 5.00 | 0.004 | 0.020 |
| D-1812-300L | 3.00 | 6.00 | 9.0 | 50.0 | 1.50 | 15.00 | 2.00 | 0.004 | 0.018 |
| D -1812-300/12L | 3.00 | 6.00 | 12.0 | 50.0 | 1.50 | 15.00 | 2.00 | 0.004 | 0.018 |
| D -1812-350L | 3.50 | 7.00 | 9.0 | 50.0 | 1.50 | 17.50 | 2.00 | 0.003 | 0.015 |
| D -1812-350/12L | 3.50 | 7.00 | 12.0 | 50.0 | 1.50 | 17.50 | 2.00 | 0.003 | 0.015 |
| D -1812-400L | 4.00 | 8.00 | 9.0 | 50.0 | 1.50 | 20.00 | 2.00 | 0.003 | 0.014 |
| D -1812-400/12L | 4.00 | 8.00 | 12.0 | 50.0 | 1.50 | 17.50 | 2.00 | 0.003 | 0.014 |
| D -1812-450L | 4.50 | 9.00 | 9.0 | 50.0 | 1.20 | 22.50 | 5.0 | 0.002 | 0.012 |
| D -1812-450/12L | 4.50 | 9.00 | 12.0 | 50.0 | 1.20 | 22.50 | 5.0 | 0.002 | 0.012 |
| D -1812-450/18L | 4.50 | 9.00 | 18.0 | 20.0 | 1.20 | 22.50 | 5.0 | 0.002 | 0.012 |
| D -1812-500L | 5.00 | 10.0 | 9.0 | 50.0 | 1.20 | 25.00 | 5.0 | 0.002 | 0.011 |
| D -1812-500/12L | 5.00 | 10.0 | 12.0 | 50.0 | 1.20 | 25.00 | 5.0 | 0.002 | 0.011 |
| D -1812-550L | 5.50 | 11.0 | 9.0 | 50.0 | 1.20 | 27.50 | 5.0 | 0.002 | 0.010 |
| D -1812-550/12L | 5.50 | 11.0 | 12.0 | 50.0 | 1.20 | 27.50 | 5.0 | 0.002 | 0.010 |
| D -1812-600L | 6.00 | 12.0 | 9.0 | 50.0 | 1.20 | 30.0 | 5.0 | 0.001 | 0.009 |
| D -1812-600/12L | 6.00 | 12.0 | 12.0 | 50.0 | 1.20 | 30.0 | 5.0 | 0.001 | 0.009 |
| D -1812-650L | 6.50 | 13.0 | 9.0 | 50.0 | 1.20 | 32.5 | 5.0 | 0.001 | 0.008 |
| D -1812-650/12L | 6.50 | 13.0 | 12.0 | 50.0 | 1.20 | 32.5 | 5.0 | 0.001 | 0.008 |
| D -1812-700L | 7.00 | 14.0 | 9.0 | 50.0 | 1.20 | 35.0 | 5.0 | 0.001 | 0.007 |
| D -1812-700/12L | 7.00 | 14.0 | 12.0 | 50.0 | 1.20 | 35.0 | 5.0 | 0.001 | 0.007 |
| D -1812-750L | 7.50 | 15.0 | 9.0 | 50.0 | 1.20 | 37.5 | 5.0 | 0.001 | 0.006 |
| D -1812-750/12L | 7.50 | 15.0 | 12.0 | 50.0 | 1.20 | 37.5 | 5.0 | 0.001 | 0.006 |
| D -1812-800L | 8.00 | 16.0 | 9.0 | 50.0 | 1.20 | 40.0 | 5.0 | 0.0005 | 0.005 |
| D -1812-800/12L | 8.00 | 16.0 | 12.0 | 50.0 | 1.20 | 40.0 | 5.0 | 0.0005 | 0.005 |
| D -1812-850L | 8.50 | 17.0 | 9.0 | 50.0 | 1.20 | 42.5 | 5.0 | 0.0005 | 0.0045 |
| D -1812-850/12L | 8.50 | 17.0 | 12.0 | 50.0 | 1.20 | 42.5 | 5.0 | 0.0005 | 0.0045 |
| D 1812-900L | 9.00 | 18.0 | 9.0 | 50.0 | 1.20 | 45.0 | 5.0 | 0.0005 | 0.0040 |
| D 1812-900/12L | 9.00 | 18.0 | 12.0 | 50.0 | 1.20 | 45.0 | 5.0 | 0.0005 |
0.0040 |
I-hold：保持电流：设备在25℃静止空气中不会跳闸的最大电流。
I-trip：跳闸电流：设备在25℃静止空气中跳闸时的最小电流。
Vmax：设备在额定电流（Imax）下能够承受的最大电压，且不会造成损坏。
I max：在额定电压（Vmax）下，设备能够承受的最大故障电流而不会损坏。
Pd typ：在25℃静止空气中处于跳闸状态时，设备消耗的典型功率。
R0 min：设备在初始（未焊接）状态下的最小电阻。
R1 max：设备在25℃下的最大电阻，在260℃的跳闸或回流焊20秒后一小时测量。
产品尺寸（mm）和标记
| Model | A | B | C | D | E | Marking | ||||
| Min | Max | Min | Max | Min | Max | Min | Max | Min | ||
| D -1812-190L | 4.37 | 4.73 | 3.07 | 3.41 | 0.35 | 0.75 | 0.30 | 1.20 | 0.20 | D190 |
| D -1812-190/12L | 4.37 | 4.73 | 3.07 | 3.41 | 0.35 | 0.75 | 0.30 | 1.20 | 0.20 | D190 |
| D -1812-260L | 4.37 | 4.73 | 3.07 | 3.41 | 0.35 | 0.75 | 0.30 | 1.20 | 0.20 | D260 |
| D -1812-260/12L | 4.37 | 4.73 | 3.07 | 3.41 | 0.35 | 0.75 | 0.30 | 1.20 | 0.20 | D260 |
| D -1812-300L | 4.37 | 4.73 | 3.07 | 3.41 | 0.35 | 0.75 | 0.30 | 1.20 | 0.20 | D300 |
| D -1812-300/12L | 4.37 | 4.73 | 3.07 | 3.41 | 0.35 | 0.75 | 0.30 | 1.20 | 0.20 | D300 |
| D -1812-350L | 4.37 | 4.73 | 3.07 | 3.41 | 0.35 | 0.75 | 0.30 | 1.20 | 0.20 | D350 |
| D -1812-350/12L | 4.37 | 4.73 | 3.07 | 3.41 | 0.35 | 0.75 | 0.30 | 1.20 | 0.20 | D350 |
| D -1812-400L | 4.37 | 4.73 | 3.07 | 3.41 | 0.35 | 0.75 | 0.30 | 1.20 | 0.20 | D400 |
| D -1812-400/12L | 4.37 | 4.73 | 3.07 | 3.41 | 0.35 | 0.75 | 0.30 | 1.20 | 0.20 | D400 |
| D -1812-450L | 4.37 | 4.73 | 3.07 | 3.41 | 0.35 | 0.75 | 0.30 | 1.20 | 0.20 | D450 |
| D -1812-450/12L | 4.37 | 4.73 | 3.07 | 3.41 | 0.35 | 0.75 | 0.30 | 1.20 | 0.20 | D450 |
| D -1812-450/18L | 4.37 | 4.73 | 3.07 | 3.41 | 0.35 | 0.75 | 0.30 | 1.20 | 0.20 | D450 |
| D -1812-500L | 4.37 | 4.73 | 3.07 | 3.41 | 0.35 | 0.75 | 0.30 | 1.20 | 0.20 | D500 |
| D -1812-500/12L | 4.37 | 4.73 | 3.07 | 3.41 | 0.35 | 0.75 | 0.30 | 1.20 | 0.20 | D500 |
| D -1812-550L | 4.37 | 4.73 | 3.07 | 3.41 | 0.35 | 0.75 | 0.30 | 1.20 | 0.20 | D550 |
| D -1812-550/12L | 4.37 | 4.73 | 3.07 | 3.41 | 0.35 | 0.75 | 0.30 | 1.20 | 0.20 | D550 |
| D -1812-600L | 4.37 | 4.73 | 3.07 | 3.41 | 0.60 | 1.00 | 0.30 | 1.20 | 0.20 | D600 |
| D -1812-600/12L | 4.37 | 4.73 | 3.07 | 3.41 | 0.60 | 1.00 | 0.30 | 1.20 | 0.20 | D600 |
| D -1812-650L | 4.37 | 4.73 | 3.07 | 3.41 | 0.60 | 1.00 | 0.30 | 1.20 | 0.20 | D650 |
| D -1812-650/12L | 4.37 | 4.73 | 3.07 | 3.41 | 0.60 | 1.00 | 0.30 | 1.20 | 0.20 | D650 |
| D -1812-700L | 4.37 | 4.73 | 3.07 | 3.41 | 0.60 | 1.00 | 0.30 | 1.20 | 0.20 | D700 |
| D -1812-700/12L | 4.37 | 4.73 | 3.07 | 3.41 | 0.60 | 1.00 | 0.30 | 1.20 | 0.20 | D700 |
| D -1812-750L | 4.37 | 4.73 | 3.07 | 3.41 | 0.60 | 1.00 | 0.30 | 1.20 | 0.20 | D750 |
| D -1812-750/12L | 4.37 | 4.73 | 3.07 | 3.41 | 0.60 | 1.00 | 0.30 | 1.20 | 0.20 | D750 |
| D -1812-800L | 4.37 | 4.73 | 3.07 | 3.41 | 0.90 | 1.30 | 0.30 | 1.20 | 0.20 | D800 |
| D -1812-800/12L | 4.37 | 4.73 | 3.07 | 3.41 | 0.90 | 1.30 | 0.30 | 1.20 | 0.20 | D800 |
| D -1812-850L | 4.37 | 4.73 | 3.07 | 3.41 | 0.90 | 1.30 | 0.30 | 1.20 | 0.20 | D850 |
| D -1812-850/12L | 4.37 | 4.73 | 3.07 | 3.41 | 0.90 | 1.30 | 0.30 | 1.20 | 0.20 | D850 |
| D -1812-900L | 4.37 | 4.73 | 3.07 | 3.41 | 0.90 | 1.30 | 0.30 | 1.20 | 0.20 | D900 |
| D -1812-900/12L | 4.37 | 4.73 | 3.07 | 3.41 | 0.90 | 1.30 | 0.30 | 1.20 | 0.20 | D900 |
温度折减表【环境温度下（℃）的工作电流（A）】
| Model | Ambient Operating Temperature | ||||||||
| -40℃ | -20℃ | 0℃ | 25℃ | 40℃ | 50℃ | 60℃ | 70℃ | 85℃ | |
| D -1812-190L | 2.76 | 2.47 | 2.22 | 1.90 | 1.63 | 1.46 | 1.31 | 1.18 | 0.95 |
| D -1812-190/12L | 2.76 | 2.47 | 2.22 | 1.90 | 1.63 | 1.46 | 1.31 | 1.18 | 0.95 |
| D -1812-260L | 3.78 | 3.38 | 3.04 | 2.60 | 2.23 | 2.00 | 1.79 | 1.61 | 1.30 |
| D -1812-260/12L | 3.78 | 3.38 | 3.04 | 2.60 | 2.23 | 2.00 | 1.79 | 1.61 | 1.30 |
| D -1812-300L | 4.35 | 3.90 | 3.51 | 3.00 | 2.58 | 2.31 | 2.07 | 1.86 | 1.50 |
| D -1812-300/12L | 4.35 | 3.90 | 3.51 | 3.00 | 2.58 | 2.31 | 2.07 | 1.86 | 1.50 |
| D -1812-350L | 5.08 | 4.55 | 4.10 | 3.50 | 3.01 | 2.70 | 2.42 | 2.17 | 1.75 |
| D -1812-350/12L | 5.08 | 4.55 | 4.10 | 3.50 | 3.01 | 2.70 | 2.42 | 2.17 | 1.75 |
| D -1812-400L | 5.80 | 5.20 | 4.68 | 4.00 | 3.44 | 3.08 | 2.76 | 2.48 | 2.00 |
| D -1812-400/12L | 5.80 | 5.20 | 4.68 | 4.00 | 3.44 | 3.08 | 2.76 | 2.48 | 2.00 |
| D -1812-450L | 6.57 | 5.94 | 5.15 | 4.50 | 3.93 | 3.46 | 3.14 | 2.72 | 2.14 |
| D -1812-450/12L | 6.57 | 5.94 | 5.15 | 4.50 | 3.93 | 3.46 | 3.14 | 2.72 | 2.14 |
| D -1812-450/18L | 6.57 | 5.94 | 5.15 | 4.50 | 3.93 | 3.46 | 3.14 | 2.72 | 2.14 |
| D -1812-500L | 7.30 | 6.61 | 5.72 | 5.00 | 4.37 | 3.84 | 3.49 | 3.03 | 2.38 |
| D -1812-500/12L | 7.30 | 6.61 | 5.72 | 5.00 | 4.37 | 3.84 | 3.49 | 3.03 | 2.38 |
| D -1812-550L | 8.03 | 7.27 | 6.30 | 5.50 | 4.81 | 4.23 | 3.84 | 3.33 | 2.62 |
| D -1812-550/12L | 8.03 | 7.27 | 6.30 | 5.50 | 4.81 | 4.23 | 3.84 | 3.33 | 2.62 |
| D -1812-600L | 8.76 | 7.93 | 6.87 | 6.00 | 5.24 | 4.61 | 4.18 | 3.63 | 2.86 |
| D -1812-600/12L | 8.76 | 7.93 | 6.87 | 6.00 | 5.24 | 4.61 | 4.18 | 3.63 | 2.86 |
| D -1812-650L | 9.49 | 8.59 | 7.44 | 6.50 | 5.68 | 4.99 | 4.53 | 3.93 | 3.10 |
| D -1812-650/12L | 9.49 | 8.59 | 7.44 | 6.50 | 5.68 | 4.99 | 4.53 | 3.93 | 3.10 |
| D -1812-700L | 10.22 | 9.25 | 8.01 | 7.00 | 6.12 | 5.38 | 4.88 | 4.24 | 3.33 |
| D -1812-700/12L | 10.22 | 9.25 | 8.01 | 7.00 | 6.12 | 5.38 | 4.88 | 4.24 | 3.33 |
| D -1812-750L | 10.95 | 9.91 | 8.59 | 7.50 | 6.55 | 5.76 | 5.23 | 4.54 | 3.57 |
| D -1812-750/12L | 10.95 | 9.91 | 8.59 | 7.50 | 6.55 | 5.76 | 5.23 | 4.54 | 3.57 |
| D -1812-800L | 11.68 | 10.57 | 9.16 | 8.00 | 6.99 | 6.15 | 5.58 | 4.84 | 3.81 |
| D -1812-800/12L | 11.68 | 10.57 | 9.16 | 8.00 | 6.99 | 6.15 | 5.58 | 4.84 | 3.81 |
| D -1812-850L | 12.41 | 11.23 | 9.73 | 8.50 | 7.43 | 6.53 | 5.93 | 5.14 | 4.05 |
| D -1812-850/12L | 12.41 | 11.23 | 9.73 | 8.50 | 7.43 | 6.53 | 5.93 | 5.14 | 4.05 |
| D -1812-900L | 13.14 | 11.89 | 10.30 | 9.00 | 7.86 | 6.92 | 6.28 | 5.45 | 4.29 |
| D -1812-900/12L | 13.14 | 11.89 | 10.30 | 9.00 | 7.86 | 6.92 | 6.28 | 5.45 | 4.29 |