1：高价收购IC各种品牌芯片：内存IC，通信IC，手机IC，BGA芯片，裸片IC，单片机IC，电脑IC，蓝牙IC，南北桥，显卡芯片，IC，摄.像头IC，家电IC，汽车IC，IC等等IC。（长期高价收购ALTER，MAXIM美信，TEXASINSTRUMENTS德州，ATMEL爱特梅尔，FREESCALE飞思卡尔，NS国半，ADI，BROADCOM博通，XILINX赛灵思，MICRON,镁光，NVIDIA，SII精工，TOSHINA东芝，RENESAS瑞萨，NXP，ST，INFINEON英飞凌，SAMSUNG三星，HNNIX现代，INBOND，SPANSION飞索，CYPRESS,REALTEK，HITTITE，MICROCHIP，SUNPLUS，LATTICE，INTERSIL，ON，FAIRCHILD，海思，展讯，昂宝，等等品牌IC芯片电子料。）威海回收内存上门收购
2：回收内存芯片长期收购内存芯片，内存颗粒，内存条，FLASH芯片，闪存，显存，CF卡，SD卡，TF卡，MP3/MP4/MP5拆机FLASH，SSD固态硬盘，等等内存物料。（高价回收SAMSUNG三星内存芯片，HNNIX现代内存芯片，TOSHIBA东芝内存芯片，MICRON镁光内存芯片，INTEL英特内存芯片，SPANSION飞索内存芯片，尔必达内存芯片，INBOND华邦内存芯片等等品牌内存。）
3：回收三极管长期收购三极管，贴片三极管，可控硅，场效应管，MOS管等等物料。(FAIRCHILD仙童，TOSHIBA东芝，ON，ST，INFINEON英飞凌，NS国半，长电，IR等等品牌三极管。)威海回收内存上门收购
4：回收IG模块长期收购IG模块（富士，三菱，INFINEON英飞凌，西门康等等品牌IG模块。回收继电器长期收购继电器（欧姆龙，宏发，，泰科等等品牌继电器。
5：回收电容、电感、电阻、磁珠、晶振、滤波器长期回收电容，电感，电阻，磁珠，钽电容，电容，贴片电容，穿心电容等等。（村田，三星，安华高科，TDK电感，三和，X钽电容，KEMET基美钽电容，黑金刚，红宝石，三洋，等等品牌物料）
长期回收以下型号：
UMK063BJ332KP-F
UMK063BJ332MP-F
UMK063BJ471KP-F
UMK063BJ471MP-F
UMK063BJ472KP-F
UMK063BJ472MP-F
UMK063BJ681KP-F
UMK063BJ681MP-F
UMK063BJ682KP-F
UMK063BJ682MP-F
UMK063CG010-F
UMK063CG010CT-F
UMK063CG010CTHF
UMK063CG020-F
UMK063CG020CT-F
UMK063CG020CTHF
UMK063CG030-F
UMK063CG030CT-F
UMK063CG030CTHF
UMK063CG040-F
UMK063CG040CT-F
UMK063CG040CTHF
UMK063CG050-F
UMK063CG050CT-F
UMK063CG050CTHF
UMK063CG060-F
UMK063CG060CT-F
UMK063CG060DT-F
UMK063CG060DTHF
UMK063CG070-F
UMK063CG070CT-F
UMK063CG070DT-F
UMK063CG070DTHF
UMK063CG080-F
UMK063CG080CT-F
UMK063CG080DT-F
UMK063CG080DTHF
UMK063CG090-F
UMK063CG090CT-F
UMK063CG090DT-F
UMK063CG090DTHF
UMK063CG0R2-F
UMK063CG0R2CT-F
UMK063CG0R2CTHF
UMK063CG0R3-F
UMK063CG0R3CT-F
UMK063CG0R3CTHF
UMK063CG0R4-F
UMK063CG0R4CT-F
UMK063CG0R4CTHF
UMK063CG0R5-F
UMK063CG0R5CT-F
UMK063CG0R5CTHF
UMK063CG0R6-F
UMK063CG0R6CT-F
UMK063CG0R6CTHF
UMK063CG0R7-F
UMK063CG0R7CT-F
UMK063CG0R7CTHF
UMK063CG0R8-F
UMK063CG0R8CT-F
UMK063CG0R8CTHF
UMK063CG0R9-F
UMK063CG0R9CT-F
UMK063CG0R9CTHF
UMK063CG100DT-F
UMK063CG100DTHF
UMK063CG101JT-F
UMK063CG101JTHF
UMK063CG110JT-F
UMK063CG110JTHF
UMK063CG111JT-F
UMK063CG120JT-F
UMK063CG120JTHF
UMK063CG121JT-F
UMK063CG130JT-F
UMK063CG130JTHF
UMK063CG131JT-F
UMK063CG150JT-F
UMK063CG150JTHF
UMK063CG151JT-F
UMK063CG160JT-F
UMK063CG160JTHF
UMK063CG180JT-F
UMK063CG180JTHF
UMK063CG181JT-F
UMK063CG1R1-F
UMK063CG1R1CT-F
UMK063CG1R1CTHF
UMK063CG1R2-F
UMK063CG1R2CT-F
UMK063CG1R2CTHF
UMK063CG1R3-F
UMK063CG1R3CT-F
UMK063CG1R3CTHF
UMK063CG1R4-F
UMK063CG1R4CT-F
UMK063CG1R4CTHF
UMK063CG1R5-F
UMK063CG1R5CT-F
UMK063CG1R5CTHF
UMK063CG1R6-F
UMK063CG1R6CT-F
UMK063CG1R6CTHF
UMK063CG1R7-F
UMK063CG1R7CT-F
UMK063CG1R7CTHF
UMK063CG1R8-F
UMK063CG1R8CT-F
UMK063CG1R8CTHF
UMK063CG1R9-F
UMK063CG1R9CT-F
UMK063CG1R9CTHF
UMK063CG200JT-F
UMK063CG200JTHF
UMK063CG201JT-F
UMK063CG220JT-F
UMK063CG220JTHF
UMK063CG221JT-F
UMK063CG240JT-F
UMK063CG240JTHF
UMK063CG270JT-F
UMK063CG270JTHF
UMK063CG2R1-F
UMK063CG2R1CT-F
UMK063CG2R1CTHF
UMK063CG2R2-F
UMK063CG2R2CT-F
UMK063CG2R2CTHF
UMK063CG2R3-F
UMK063CG2R3CT-F
UMK063CG2R3CTHF
UMK063CG2R4-F
UMK063CG2R4CT-F
UMK063CG2R4CTHF
UMK063CG2R5-F
UMK063CG2R5CT-F
UMK063CG2R5CTHF
UMK063CG2R6-F
UMK063CG2R6CT-F
UMK063CG2R6CTHF
UMK063CG2R7-F
UMK063CG2R7CT-F
UMK063CG2R7CTHF
UMK063CG2R8-F
UMK063CG2R8CT-F
UMK063CG2R8CTHF
UMK063CG2R9-F
UMK063CG2R9CT-F
UMK063CG2R9CTHF
UMK063CG300JT-F
UMK063CG300JTHF
UMK063CG330JT-F
UMK063CG330JTHF
UMK063CG360JT-F
UMK063CG360JTHF
UMK063CG390JT-F
UMK063CG390JTHF
UMK063CG3R1-F
UMK063CG3R1CT-F
UMK063CG3R1CTHF
UMK063CG3R2-F
UMK063CG3R2CT-F
UMK063CG3R2CTHF
UMK063CG3R3-F
UMK063CG3R3CT-F
UMK063CG3R3CTHF
UMK063CG3R4-F
UMK063CG3R4CT-F
UMK063CG3R4CTHF
UMK063CG3R5-F
UMK063CG3R5CT-F
UMK063CG3R5CTHF
UMK063CG3R6-F
UMK063CG3R6CT-F
UMK063CG3R6CTHF
UMK063CG3R7-F
UMK063CG3R7CT-F
UMK063CG3R7CTHF
UMK063CG3R8-F
UMK063CG3R8CT-F
UMK063CG3R8CTHF
UMK063CG3R9-F
UMK063CG3R9CT-F
UMK063CG3R9CTHF
UMK063CG430JT-F
UMK063CG430JTHF
UMK063CG470JT-F
UMK063CG470JTHF
UMK063CG4R1-F
UMK063CG4R1CT-F
UMK063CG4R1CTHF
UMK063CG4R2-F
UMK063CG4R2CT-F
UMK063CG4R2CTHF
UMK063CG4R3-F
UMK063CG4R3CT-F
传统的使用习惯上，示波器的接地方式就是那根长长的接地夹线。这种接地方式，确实是一种简单方便的接地方式，却并不是一种严谨的、准确的接地方式。接地夹线示意图由于地夹线比较长，其会形成一个寄生电感Lgnd，随着夹线的增长，这个电感也会增大，而这个回路电感会和示波器的输入电容Cin产生谐振。这就导致示波器的幅频特性变得不平坦，导致测量不准确。下图为使用接地夹时的等效电路。接地夹线等效电路图下图为用该等效电路仿真出的频谱特性曲线：频谱特性曲线图可以看出，在60MHz以上的频率，幅度已经产生了超过3dB的过冲，而到达100M左右时，过冲到幅度。