二极管数据表中的常用性能参数和中英文说明
二极管是最简单的半导体器件,也是大多数电子产品BOM清单中的基础元器件之一。虽然购买二极管之前,用户已经知道这些二极管的具体用法,阅读厂商提供的二极管数据表,可以了解更多的二极管参数和应用信息,让自己的设计方案更完美。
但是,目前市场上的半导体器件,无论是集成电路芯片,还是二极管、三极管、MOS管,厂家所提供的数据表(datasheet)全部是英文。以下列出了一些常见的二极管参数,依次为参数、英文说明、中文说明:
αVF:Temperature?coefficient?of?forward?voltage,正向压降的温度系数?? ?
Cj:Junction?Capacitance,结电容??
ηV:Rectification?Efficiency,整流效率
dv/dt:critical?rate?of?rise?of?off-state?voltage,断态电压临界上升率?
di/dt:critical?rate?of?rise?of?on-state?current,通态电流临界上升率?
I(AV):Average?Forward?Rectified?Current,正向平均整流电流????
ID:Stand-off?Reverse?Leakage?Current,关态反向漏电流??
IFSM:Peak?Forward?Surge?Current,正向浪涌峰值电流??
IF(AV):foreard?current,正向平均电流(整流管)
If:DC?Forward?Current,正向直流电流?
IGT:gate?trigger?current,门极触发电流?
ITSM:Non?Repetitive?Surge?Peak?on-state?Current,不重复浪涌峰值开态电流?
IDM:Maximum?Reverse?Leakage,最大反向漏电流??
IDRM:repetitive?peak?of-state?current,断态重复峰值电流
IFM:peak?forward?current?(of?diode),正向峰值电流(整流管)??
IFRM:Repetitive?Peak?Forward?Current,正向重复峰值电流??
IH:Holding?Current,维持电流??
IO:Mean?Forward?Current,正向平均电流??
IR:Reverse?Leakage?Current,反向漏电流??
Irr:Reverse?Recovery?Current,反向恢复电流??
IPPM:Maximum?peak?lmpulse?Current,最大脉冲峰值电流??
IRM:Maximum?peak?Reverse?Current,最大峰值反向电流??
IRM(REC):Maximum?peak?Reverse?recovery?Current,最大峰值反向恢复电流?
IRMS:R.M.S.?on-state?current,通态方均根电流? ?
IRRM:repetitive?peak?reverse?current,反向重复峰值电流?
IRSM:Maximum?Non-repetitive?recovery?Peak?Current,最大峰值反向恢复电流?
IT:On-state?Test?Current,导通测试电流?
IT(AV):on-state?current,通态平均电流??
ITM:peak?on-state?current,通态峰值电流?
ITSM:surge?on-state?current,通态浪涌电流?
PD:Power Dissipation,功功率损耗
PM(AV):Maximum?Steady?State?Power?Dissipation,最大稳态功耗??
PPM:Peak?Pulse?Power?Dissipation,峰值脉冲功耗??
Ptot:Total?Power?Dissipation,总功耗?
Qrr:reverse?recovery?charge,反向恢复电荷??
Rjc:junction-case?thermal?resistance,结壳热阻?
ROJA:Thermal?Resistance?(Junction?to?Ambient),热阻(结到环境)??
ROJC:Thermal?Resistance(Junction?to?Case?),热阻(结到管壳)??
ROJL:Thermal?Resistance(Junction?to?Lead?),热阻(结到引线)?
TA:Ambient?Temperature,环境温度??
TC:Case?Temperature,管壳温度??
td:Time?Duration,持续时间??
tf:Fall?Time,下降时间??
tfr:Forward?Recovery?Time,正向恢复时间??
tgt:gate?controlled?turn-on?time,门极控制开通时间?
Tj:Junction?Temperature,结温?
Tjm:maximum?virtual?junction?temperature,最高等效结温?
TL:Lead?Temperature,引线温度
ton:turn?on?time,开通时间
tq:cricuit?commutated?turn-off?time,电路换向关断时间?? ? ?
tr:Rise?Time,上升时间??
trr:reverse?recovery?time?(of?diode)?,(二极管的)反向恢复时间?
ts:storage?time,存储时间???
TSTG:?Storage?Temperature,存储温度?
VBO:Breakover?Voltage,转折电压??
V(BR):Reverse?Breakdown?Voltage,反向击穿电压??
VDC,VR?DC?Reverse?Voltage,反向直流电流
VDSM:non-repetitive?peak?off-state?voltage,断态不重复峰值电压?
VDRM:repetitive?peak?off-state?voltage,断态重复峰值电压?
VF:Instantaneous?Forward?Voltage,正向瞬态电压??
VFM:peak?forward?voltage?(of?diode),正向峰值电压(整流管)?
VFR:Forward?Recovery?Voltage,正向恢复电压?
VGT:gate?trigger?voltage,门极触发电压?
VRM:Maximum?Reverse?Paek?Reverse?Voltage,最大重复峰值反向电压?
VRMS:RMS?Input?Voltage,均方根输入电压??
VRRM:Peak?Repetitive?Reverse?Voltage,反向重复峰值电压??
VRSM:non-repetitive?peak?reverse?voltage,反向不重复峰值电压
VTM:peak?on-state?voltage,通态峰值电压?
VWM:Working?Peak?Reverse?Voltage,反向工作峰值电压??
VC:Clamping?Voltage,箝位电压??
VWM:Working?Stand-off?Voltage,关态工作电压??
VZ:Zener?Voltage,齐纳电压??
ZZ:Dynamia?Zener?Impedance,动态齐纳阻抗??
BZT52C18稳压二极管为例,该通用的中等电流贴片二极管采用SOD-123封装,最大功耗(PD)为350mW,导通电压(VF@IF=10mA)为0.9V,热阻(ROJA)为357°C/W,结温(TJ)为150°C,存储温度(TSTG)为-55~+150°C,其他参数用户可以从数据表中的图表及特性曲线查找。
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