所謂貼片壓敏電阻，是一種過靜電保護的ESD保護元器件，響應時間ns級，比TVS二極管慢，比陶瓷氣體放電管快，主要應用于主板上的I/O端口（RS232，USB，PS2，VGA，音頻）、筆記本電腦、機頂盒、MP3播放器、DVD播放器、以及對接系統(tǒng)等。貼片壓敏電阻種類繁多，型號齊全，型號命名一般都用封裝來表示。貼片壓敏電阻的封裝可以用兩種尺寸代碼來表示，一種英制代碼，另一種是米制代碼，都是由4位數(shù)字表示的。

東沃電子自主研發(fā)、生產、銷售的貼片壓敏電阻，其封裝采用的就是英制代碼來表示的。目前市場上應用比較多的貼片壓敏電阻封裝有：0603、0805、1206、1210、1812、2220、3220等，具體型號有：

1）貼片壓敏電阻0603：MVR0603-3R0G、MVR0603-5R0G、MVR0603-8R0G、MVR0603-120G、MVR0603-180G、MVR0603-240G、MVR0603-270G、MVR0603-330G、MVR0603-390G、MVR0603-470G、MVR0603-560G、MVR0603-680G、MVR0603-820G、MVR0603-101G、MVR0603-121G、MVR0603-151G、MVR0603-181G、MVR0603-201G、MVR0603-221G、MVR0603-241G、MVR0603-271G、MVR0603-361G、MVR0603-391G、MVR0603-431G、MVR0603-471G。

2）貼片壓敏電阻0805：MVR0805-3R0G、MVR0805-5R0G、MVR0805-8R0G、MVR0805-120G、MVR0805-180G、MVR0805-240G、MVR0805-270G、MVR0805-330G、MVR0805-390G、MVR0805-470G、MVR0805-560G、MVR0805-680G、MVR0805-820G、MVR0805-101G、MVR0805-121G、MVR0805-151G、MVR0805-181G、MVR0805-201G、MVR0805-221G、MVR0805-241G、MVR0805-271G、MVR0805-361G、MVR0805-391G、MVR0805-431G、MVR0805-471G。

3）貼片壓敏電阻1206：MVR1206-3R0G、MVR1206-5R0G、MVR1206-8R0G、MVR1206-120G、MVR1206-180G、MVR1206-240G、MVR1206-270G、MVR1206-330G、MVR1206-390G、MVR1206-470G、MVR1206-560G、MVR1206-680G、MVR1206-820G、MVR1206-101G、MVR1206-121G、MVR1206-151G、MVR1206-181G、MVR1206-201G、MVR1206-221G、MVR1206-241G、MVR1206-271G、MVR1206-361G、MVR1206-391G、MVR1206-431G、MVR1206-471G。

4）貼片壓敏電阻1210：MVR1210-3R0G、MVR1210-5R0G、MVR1210-8R0G、MVR1210-120G、MVR1210-180G、MVR1210-240G、MVR1210-270G、MVR1210-330G、MVR1210-390G、MVR1210-470G、MVR1210-560G、MVR1210-680G、MVR1210-820G、MVR1210-101G、MVR1210-121G、MVR1210-151G、MVR1210-181G、MVR1210-201G、MVR1210-221G、MVR1210-241G、MVR1210-271G、MVR1210-361G、MVR1210-391G、MVR1210-431G、MVR1210-471G。

5）貼片壓敏電阻1812：MVR1812-3R0G、MVR1812-5R0G、MVR1812-8R0G、MVR1812-120G、MVR1812-180G、MVR1812-240G、MVR1812-270G、MVR1812-330G、MVR1812-390G、MVR1812-470G、MVR1812-560G、MVR1812-680G、MVR1812-820G、MVR1812-101G、MVR1812-121G、MVR1812-151G、MVR1812-181G、MVR1812-201G、MVR1812-221G、MVR1812-241G、MVR1812-271G、MVR1812-361G、MVR1812-391G、MVR1812-431G、MVR1812-471G。

6）貼片壓敏電阻2220：MVR2220-3R0G、MVR2220-5R0G、MVR2220-8R0G、MVR2220-120G、MVR2220-180G、MVR2220-240G、MVR2220-270G、MVR2220-330G、MVR2220-390G、MVR2220-470G、MVR2220-560G、MVR2220-680G、MVR2220-820G、MVR2220-101G、MVR2220-121G、MVR2220-151G、MVR2220-181G、MVR2220-201G、MVR2220-221G、MVR2220-241G、MVR2220-271G、MVR2220-361G、MVR2220-391G、MVR2220-431G、MVR2220-471G。

7）貼片壓敏電阻3220：MVR3220-3R0G、MVR3220-5R0G、MVR3220-8R0G、MVR3220-120G、MVR3220-180G、MVR3220-240G、MVR3220-270G、MVR3220-330G、MVR3220-390G、MVR3220-470G、MVR3220-560G、MVR3220-680G、MVR3220-820G、MVR3220-101G、MVR3220-121G、MVR3220-151G、MVR3220-181G、MVR3220-201G、MVR3220-221G、MVR3220-241G、MVR3220-271G、MVR3220-361G、MVR3220-391G、MVR3220-431G、MVR3220-471G。

更多有關貼片壓敏電阻選型和應用知識，您身邊的保護器件廠家東沃電子，為您的電路安全保駕護航！