压敏电阻（英语：Varistor 或 Voltage Dependent Resistor，缩写VDR），又名变阻器、变阻体或突波吸收器，是一种具有显著非欧姆导体性质的电子元件，电阻值会随外部电压而改变，因此它的电流——电压特性曲线具有显著的非线性。压敏电阻广泛的被应用在电子线路中，来防护因为电力供应系统的暂态电压突波所可能对电路之伤害。当高压来到时，压敏电阻的电阻降低而将电流予以分流，因而保护了敏感的电子元件。
| 型号 | 制造商 | 封装 | Max. Allowable Ac rms/V | V1mA/V | Max. Clamping VC/V | IP/A | IPP/A | 10/1000μs/J | 1KHz(JJM)1MHz(SPS)/pF | Max. Allowable DC/V |
|---|---|---|---|---|---|---|---|---|---|---|
| VESD3R3DG | SPSEMI | 0805 | 3.3 | 4.0-6.0 | 14 | 1 | 40 | 0.1 | 2000 | 2 |
| VESD5R6DG | SPSEMI | 0805 | 5.6 | 6.4-10.1 | 19 | 1 | 40 | 0.1 | 1100 | 4 |
| VESD090DG | SPSEMI | 0805 | 9 | 10.8-16.2 | 25 | 1 | 40 | 0.1 | 900 | 6 |
| VESD140DG | SPSEMI | 0805 | 14 | 16.8-25.2 | 40 | 1 | 40 | 0.1 | 620 | 11 |
| VESD180DG | SPSEMI | 0805 | 18 | 21.5-30.0 | 54 | 1 | 40 | 0.1 | 550 | 14 |
| VESD220DG | SPSEMI | 0805 | 22 | 26.4-33.0 | 65 | 1 | 40 | 0.1 | 500 | 17 |
| VESD300DG | SPSEMI | 0805 | 30 | 36.0-48.0 | 85 | 1 | 40 | 0.1 | 300 | 24 |
| VESD3R3EG | SPSEMI | 1206 | 3.3 | 4.0-6.0 | 14 | 1 | 100 | 0.4 | 4000 | 2 |
| VESD5R6EG | SPSEMI | 1206 | 5.6 | 6.4-10.1 | 19 | 1 | 100 | 0.4 | 3100 | 4 |
| VESD090EG | SPSEMI | 1206 | 9 | 10.8-16.2 | 25 | 1 | 100 | 0.4 | 2000 | 6 |
| VESD140EG | SPSEMI | 1206 | 14 | 16.8-25.2 | 40 | 1 | 100 | 0.4 | 1600 | 11 |
| VESD180EG | SPSEMI | 1206 | 18 | 21.5-30.0 | 54 | 1 | 100 | 0.4 | 1100 | 14 |
| VESD240EG | SPSEMI | 1206 | 24 | 27.4-37.0 | 67 | 1 | 100 | 0.4 | 1000 | 18 |
| VESD300EG | SPSEMI | 1206 | 30 | 36.0-48.0 | 85 | 1 | 100 | 0.4 | 800 | 24 |
| VESD380EG | SPSEMI | 1206 | 38 | 43.6-57.0 | 105 | 1 | 100 | 0.4 | 600 | 30 |
| VESD140FG | SPSEMI | 1210 | 14 | 16.8-25.2 | 40 | 2.5 | 250 | 1.5 | 1800 | 11 |
| VESD180FG | SPSEMI | 1210 | 18 | 21.5-30.0 | 51 | 2.5 | 250 | 1.5 | 900 | 14 |
| VESD270FG | SPSEMI | 1210 | 27 | 32.4-40.5 | 75 | 2.5 | 250 | 1.5 | 800 | 20 |
| VESD300FG | SPSEMI | 1210 | 30 | 36.0-48.0 | 85 | 2.5 | 250 | 1.5 | 700 | 24 |
| VESD380FG | SPSEMI | 1210 | 38 | 43.6-57.0 | 105 | 2.5 | 250 | 1.5 | 600 | 30 |