雷卯推出SOD123HE封装二极管，帮工程师解决发热问题

雷卯推出SOD123HE封装二极管，帮工程师解决发热问题

为何肖特基二极管会发热？

肖特基二极管在工作时发热量不可小视，发热量大小与实际工作电流大小有关，与肖特基二极管实际压降大小有关。这是可以通过测量和计算得到，很方便。

方法是：测得二极管两端实际压降假如为0.5V，流过二极管实际电流假如为30A；

那么肖特基二极管本身消耗功率P=U*I=0.5 *30A=15W，每小时做功W=P*T=15*1=15WH=0.015KWH；

肖特基如何降低发热量？

有几种方法可以解决

一、选择更好芯片的肖特基

同等电流情况下，一是可以选择更低压降的肖特基，可以保证VF稍微低0.2-0.3V，可以保证功耗情况下，比如选择雷卯的SS34LVFA 压降为0.3V。

二、选择带散热焊盘的肖特基

国内大部分工厂目前都用的两端引脚大小相同的封装，比如SMA SOD123等，现在有SOD123HE封装，可以解决一些散热问题，帮客户在不改变封装焊盘大小情况下，设计更好的产品。以下是2种封装的对比图

同样大小的体积，SOD123-HE SOD123EP的产品热阻明显比普通封装小，散热能力大大增加。

产品列表

目前推出的SOD123HE系列的产品有FR系列快恢复二极管，US系列高效二极管，1A 2A 3A的肖特基产品。

可以替代国外品牌的型号

RS1MFP	ACDBMT160-HF
SS1H10LS	SS1H6LS RVG
SS14FP	TSSE3U45 RVG
RS1JFP	S1KFP
SS16FP	SS16LS RVG
S1MFP	RS1KFP
SS1H4LS RVG	SS16LSHRVG
S1MLS RVG	SS1H15LS RVG
TSSE3H60	SMD15HE-TP
TSSE3U60HRVG	SMD12HE-TP
S110FP	SMD13HE-TP
SS1H20LS	RS1MLS RVG
S115FP	SMD18HE-TP
SS110LS	SS115LS RVG
SS14LS	TSSE3H45 RVG
TSSE3U45H	SMD28HE-TP
SS13FP	FSV340FP
SS110LSH	SMD25HE-TP
TSSE3U60 RVG	SMD26LHE-TP
SS13LSHRVG	SS34LHE-TP
SS12FP	SMD23HE-TP
MER3DAH-AU_R1_007A1	SMD16HE-TP
MER2DAH-AU_R1_007A1	SMD210HE-TP
SBA330AH_R1_00001	SS310LHE-TP
PU2DLSH	RS1MLSHRVG
GS1006HE_R1_00001	SMD22HE-TP
GS2004HE_R1_00001	SMD115HE-TP
MER2DAH_R1_00701	SMD210LHE-TP
RS1KLS RVG	SMD22LHE-TP
S1JLS RVG	SS35HE-TP
GS1004HE_R1_00001	SS38HE-TP
SS30200HE_R1_00001	SS320HE-TP
PU1BLSH	SS36HE-TP
SS30100HE_R1_00001	SMD120HE-TP
PU2BLSH	S1MLSHRVG
SBA340AH_R1_00001	SS310HE-TP
SS10100HE_R1_00001	FSV360FP
SS3040HE_R1_00001	SMD215HE-TP
RS1JLS RVG	SMD14HE-TP
SBA240AH_R1_00001	SS36LHE-TP
S1JFP	SS12LS RVG
SS3020HE_R1_00001	SS14LSHRVG
SBA230AH_R1_00001	SMD26HE-TP
SS30150HE_R1_00001	SMD110HE-TP
SS30100HE-AU_R1_000A1	SMD24LHE-TP
SS2060LHE_R1_00001	SMD24HE-TP
SS1040HE-AU_R1_000A1	SMD220HE-TP
SS10150HE_R1_00001	SS315HE-TP
SS3060HE_R1_00001	SS34HE-TP
S1JLSHRVG	SS13LS RVG
SB1200AH_R1_00001	SS12LSHRVG
MB3H60AH-AU_R1_000A1	S1GLS
SS3060HE-AU_R1_000A1	GS1006HE-AU_R1_000A1
SS10200HE_R1_00001	S1DLS RQG
SS1040HE_R1_00001	S1GLS RVG
SS2060LHE-AU_R1_000A1	S1DLSHRQG
SS1060HE_R1_00001	S1GLSHRVG
SS1060HE-AU_R1_000A1	S1DLS RVG
SS2040HE_R1_00001	S1DLSHRVG
SS10150HE-AU_R1_000A1	GS2004HE-AU_R1_000A1
SMD36HE1-TP	RS1JLSHRVG
SMD34HE1-TP	SBA230AH-AU_R1_000A1
CURMT107-HF	RS1KLSHRVG
CURMT103-HF	SBA240AH-AU_R1_000A1
CFRMT107-HF	SSM3060VHE-AU_R1_000A1
CSFMT108-HF	SBA340AH-AU_R1_000A1
CSFMT104-HF	S1KLS RVG
CSFMT106-HF	S1KLSHRVG
CURMT104-HF	SMD36LHE1-TP
CGRMT4007-HF	SMD34LHE1-TP
CDBMT160-HF	CSFMT105-HF
CDBMT1150-HF	CSFMT101-HF
CDBMT140-HF	CURMT105-HF
ACDBMT140-HF	CSFMT107-HF
ACDBMT1200-HF	CURMT102-HF
CGRMT4004-HF	CURMT106-HF
CDBMT2100-HF	CSFMT102-HF
CDBMT1100-HF	CGRMT4002-HF
ACDBMT1100-HF	CFRMT101-HF
CDBMT260-HF	CFRMT102-HF
SS115LSH	CURMT101-HF
MER3DAH_R1_00701	CFRMT105-HF
PU1DLSH	CFRMT104-HF
GS2008HE_R1_00001	CFRMT103-HF
GS1008HE_R1_00001	CDBMT240-HF
GS2006HE_R1_00001	CDBMT220L-HF
SBA320AH_R1_00001	CDBMT150-HF
SS3030HE_R1_00001	CDBMT180-HF
GS1010HE_R1_00001	CFRMT106-HF
SBA220AH_R1_00001	CSFMT103-HF
SS10100HE-AU_R1_000A1	CGRMT4005-HF
S1DLS	CDBMT230L-HF
SS3040HE-AU_R1_000A1	CDBMT120-HF
SBA320AH-AU_R1_000A1	CGRMT4001-HF
SBA330AH-AU_R1_000A1	CGRMT4006-HF
SBA220AH-AU_R1_000A1	CDBMT280-HF
S1GLSH	CDBMT240L-HF
SB3H60AH_R1_00001	CGRMT4003-HF
SSM3060VHE_R1_00001	CDBMT250-HF
CDBMT230-HF	CDBMT130-HF
ACDBMT1150-HF	CDBMT220-HF