PTC Fuses for AC/DC Power Supplies

A Positive Thermal Coefficient fuse, or PTC thermistor, is a thermally sensitive semiconductor resistor that increases in resistance as temperature increases to limit current to a load. When the voltage input for a power supply is too far above or below what is specified, the excess current can damage components. Besides shutting down the power supply altogether, one can effectively limit the current by using the predictable resistive response of a PTC.

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选择 图像 零件编号 制造商 描述 数据表 供货情况 单价(含13%增值税) 根据您的数量,按照单价筛选表格中的结果。 数量 RoHS ECAD模型 系列 安装风格 端接类型 保持电流 最大电压 跳闸电流 额定电流—最大值 电阻 封装 / 箱体 最小工作温度 最大工作温度 引线间隔 资格 封装
Littelfuse 自恢复保险丝—PPTC 0.10A 30V 1210 33,007库存量
剪切带
¥4.633
¥4.2262
¥3.503
¥3.2318
卷轴
¥1.9888
最低: 1
倍数: 1
: 3,000
1210L PCB Mount SMD/SMT 100 mA 30 VDC 300 mA 10 A 15 Ohms 1210 (3225 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse 自恢复保险丝—PPTC 1812 15V .5A 7,867库存量
10,000预期 2027/1/7
剪切带
¥4.7121
¥4.3053
¥3.5595
¥3.2996
卷轴
¥1.9888
最低: 1
倍数: 1
: 2,000
1812L SMD/SMT SMD/SMT 500 mA 15 VDC 1 A 100 A 1 Ohms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse 自恢复保险丝—PPTC 15V 2016 1.50A SURF MOUNT 7,439库存量
剪切带
¥6.78
¥6.1246
¥5.1528
¥4.7573
卷轴
¥3.0397
最低: 1
倍数: 1
: 1,500
2016L SMD/SMT SMD/SMT 1.5 A 15 VDC 3 A 40 A 180 mOhms 2016 (5041 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse 自恢复保险丝—PPTC 0.30A 60V 2920 18,293库存量
剪切带
¥7.0286
¥5.7291
¥4.9833
¥3.7516
卷轴
¥2.9154
最低: 1
倍数: 1
: 1,500
2920L SMD/SMT SMD/SMT 300 mA 60 VDC 600 mA 10 A 4.8 Ohms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse 自恢复保险丝—PPTC PTC 15V 2920 3A 17,442库存量
剪切带
¥7.9439
¥7.0173
¥5.6048
¥5.2771
卷轴
¥3.4804
最低: 1
倍数: 1
: 1,500
2920L SMD/SMT SMD/SMT 3 A 15 VDC 5 A 40 A 48 mOhms 2920 (7450 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse 自恢复保险丝—PPTC 1.35A 60V RADIAL 6,980库存量
¥8.4411
¥7.7405
¥6.2715
¥5.4805
最低: 1
倍数: 1
60R PCB Mount Radial 1.35 A 60 VDC 2.7 A 40 A 300 mOhms - 40 C + 85 C 5.1 mm Bulk
Littelfuse 自恢复保险丝—PPTC 10A 32V High Temp AEC-Q200 3,641库存量
¥16.1251
¥14.6448
¥12.3283
¥11.413
最低: 1
倍数: 1
AHEF PCB Mount Radial 10 A 32 VDC 20 A 100 A 16 mOhms - 40 C + 85 C 10.9 mm AEC-Q100 Bulk
Littelfuse 自恢复保险丝—PPTC .16A 240VAC 20/2A Imax 10,156库存量
¥5.6274
¥5.1415
¥4.2714
¥3.9437
最低: 1
倍数: 1
LVR PCB Mount Radial 160 mA 120 VAC/VDC 370 mA 20 A 7.8 Ohms - 40 C + 85 C 5.8 mm Bulk
Littelfuse 自恢复保险丝—PPTC .33A 240VAC 20/4.5A Imax 3,617库存量
4,000预期 2026/11/30
¥6.3732
¥5.8421
¥4.8477
¥4.4748
最低: 1
倍数: 1
LVR PCB Mount Radial 330 mA 120 VAC/VDC 740 mA 20 A 2.6 Ohms - 40 C + 85 C 5.8 mm Bulk
Littelfuse 自恢复保险丝—PPTC .1A 30V Micro SMD AEC-Q200 12,922库存量
剪切带
¥5.3788
¥4.9268
¥4.0906
¥3.6725
卷轴
¥2.2035
最低: 1
倍数: 1
: 4,000
microASMD SMD/SMT SMD/SMT 100 mA 30 VDC 250 mA 10 A 15 Ohms 1210 (3225 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse 自恢复保险丝—PPTC .1A 60V Mini SMD AEC-Q200 9,911库存量
剪切带
¥5.3788
¥4.9155
¥4.0906
¥3.7403
卷轴
¥2.2826
最低: 1
倍数: 1
: 2,000
miniASMD SMD/SMT SMD/SMT 100 mA 60 VDC 300 mA 40 A 12.7 Ohms 1812 (4532 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse 自恢复保险丝—PPTC 1.10A 16V 100A Imax 12,416库存量
剪切带
¥4.8025
¥4.1245
¥3.6386
¥3.3561
卷轴
¥2.0679
最低: 1
倍数: 1
: 2,000
miniSMD PCB Mount SMD/SMT 1812 (4532 metric) + 85 C Reel, Cut Tape, MouseReel
Littelfuse 自恢复保险丝—PPTC 24V 750MA-HD 40A MAX 9,096库存量
剪切带
¥5.6274
¥5.1415
¥4.2714
¥3.9211
卷轴
¥2.4747
最低: 1
倍数: 1
: 1,500
miniSMD SMD/SMT SMD/SMT 750 mA 24 VDC 1.5 A 40 A 290 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse 自恢复保险丝—PPTC 24V 1.1A-HD 40A MAX 40,304库存量
剪切带
¥5.3788
¥4.8929
¥4.0793
¥3.6951
卷轴
¥2.3504
最低: 1
倍数: 1
: 1,500
miniSMD SMD/SMT SMD/SMT 1.1 A 24 VDC 2.2 A 20 A 180 mOhms 1812 (4532 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse 自恢复保险丝—PPTC .2A 24V Nano SMD AEC-Q200 6,216库存量
剪切带
¥4.4635
¥3.9437
¥3.4126
¥2.9493
卷轴
¥1.808
最低: 1
倍数: 1
: 3,000
nanoASMDC SMD/SMT SMD/SMT 200 mA 24 VDC 420 mA 100 A 3.1 Ohms 1206 (3216 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse 自恢复保险丝—PPTC .35A 16V Nano SMD AEC-Q200 8,385库存量
剪切带
¥5.0511
¥4.6443
¥3.8646
¥3.1414
卷轴
¥2.2035
最低: 1
倍数: 1
: 3,000
nanoASMDC SMD/SMT SMD/SMT 350 mA 16 VDC 750 mA 20 A 1.35 Ohms 1206 (3216 metric) - 40 C + 85 C AEC-Q100 Reel, Cut Tape, MouseReel
Littelfuse 自恢复保险丝—PPTC .35A RESETTABLE SMD FUSE 46,820库存量
剪切带
¥4.4635
¥4.0228
¥3.39
¥3.1075
卷轴
¥1.7967
最低: 1
倍数: 1
: 3,000
nanoSMD SMD/SMT SMD/SMT 350 mA 16 VDC 750 mA 20 A 1.35 Ohms 1206 (3216 metric) - 40 C + 85 C Reel, Cut Tape, MouseReel
Littelfuse 自恢复保险丝—PPTC RGEF900 6,000库存量
¥6.8704
¥6.3054
¥5.2319
¥4.8251
最低: 1
倍数: 1
RGEF PCB Mount Radial 9 A 16 VDC 15.3 A 100 A 13.5 mOhms - 40 C + 85 C 5.8 mm Bulk
Littelfuse 自恢复保险丝—PPTC 1.6A 30V 100A Imax 14,619库存量
¥3.8081
¥3.503
¥2.9154
¥2.5764
最低: 1
倍数: 1
RUEF PCB Mount Radial 1.6 A 30 VDC 3.2 A 100 A 110 mOhms - 40 C + 85 C 5.8 mm Bulk
Littelfuse 自恢复保险丝—PPTC 3A 30V 100A Imax 28,568库存量
¥5.1302
¥4.0567
¥3.4691
¥2.7911
最低: 1
倍数: 1
RUEF PCB Mount Radial 3 A 30 VDC 6 A 100 A 80 mOhms - 40 C + 85 C 5.8 mm Bulk
Littelfuse 自恢复保险丝—PPTC 3A 30V 100A Imax 5,722库存量
7,500预期 2027/1/11
剪切带
¥5.2884
¥4.8703
¥4.0454
¥3.729
卷轴
¥2.3278
最低: 1
倍数: 1
: 2,500
RUEF PCB Mount Radial 3 A 30 VDC 6 A 100 A 80 mOhms - 40 C + 85 C 5.8 mm Reel, Cut Tape
Littelfuse 自恢复保险丝—PPTC 4A 30V 100A Imax 17,918库存量
¥5.0511
¥4.633
¥3.842
¥3.4804
最低: 1
倍数: 1
RUEF PCB Mount Radial 4 A 30 VDC 8 A 100 A 50 mOhms - 40 C + 85 C 5.8 mm Bulk
Littelfuse 自恢复保险丝—PPTC 9A 30V 100A Imax 17,412库存量
¥9.5146
¥8.7688
¥7.1529
¥6.6444
最低: 1
倍数: 1
RUEF PCB Mount Radial 9 A 30 VDC 18 A 100 A 20 mOhms - 40 C + 85 C 10.9 mm Bulk
Littelfuse 自恢复保险丝—PPTC Radial Lead .3A 72V 40A Imax
56,640库存量
¥3.39
¥3.1075
¥2.5764
¥2.3843
最低: 1
倍数: 1
RXEF PCB Mount Radial 300 mA 72 VDC 600 mA 40 A 2.1 Ohms - 40 C + 85 C 5.8 mm Bulk
Littelfuse 自恢复保险丝—PPTC Radial Lead .5A 72V 40A Imax
33,535库存量
44,000预期 2027/1/4
¥3.6386
¥3.1301
¥2.5538
¥2.3504
最低: 1
倍数: 1
RXEF PCB Mount Radial 500 mA 72 VDC 1 A 40 A 1.17 Ohms - 40 C + 85 C 5.8 mm Bulk