东磁磁性材料目录

目录第一部分铁粉心磁心设计Coredesign……….………………1基本术语及定义Conceptionanddefinition………………2铁粉心材料特性表Ironpowdercorematerialcharacteristiclist………….5铁粉心材料特性曲线Ironpowdercorematerialcharacteristiccurves…….6环形铁粉心ToroidalCore………………..12E形铁粉心Ecore……………………….28棒形铁粉心PodCore………………..……32SMD铁粉心SMDIronPowderCore……………………33第二部分合金磁粉心(铁镍钼、铁镍及铁硅铝磁粉心)材料介绍MaterialIntroduction……………38材料特性曲线Alloycorecharacteristiccurves……………42合金磁粉心AlloyPowdercore……………..48合金SMD系列磁粉心SMDSeriesProductofAlloyPowderCore………56简介铁粉心是一种软磁材料。是由铁粉和绝缘剂共同构成，铁粉经绝缘解决后，以压制，热解决等工序后制成，铁粉心内部存在着均匀分布的气隙，均匀分布的气隙是铁粉心的重要特点。铁粉心优点以下：1高饱和磁感应强度，普通能够达成10000高斯以上。2规格齐全，磁导率能够从6达成100，能够满足不同的使用规定。3使用频率范畴宽，能够从几千赫兹到上百兆赫兹。4优秀的直流叠加特性。5产品形状的多样性，涉及环形，E型，U形，棒形，SMD形等复杂形状的磁心。6铁粉心能够在-55~125℃的范畴内正常工作。基于以上的特点，铁粉心被广泛地用于开关电源输出电感，在线噪声滤波器，PFC电感，扰流圈，EMI/RFI用途。铁粉心作为一种软磁材料被广泛地应用于通信，电子，仪器仪表，家电等领域。环形铁心以环氧树脂包覆，涂层在工频下最小介电质强度为600V。IntroductionIronPowdercorehasbeenwidelyusedinvariousfields.Thedistributedairgappropertiesinironpowdercoresmakethemextremelywellsuitedforavarietyorenergystorageinductorapplications.ItisapreferredchoiceforRFCIRCUITS,DCPOWERSUPPLYCHOKE,MOTORS,DIMMERCONTROLFILTERSandotherEMI/RFICIRCUITS.Ironpowderiswell-suitoperationfrom-55℃to125℃.IronpowderhasahighcurietemperatureandwillfunctiontoseveralhundreddegreesCelsius.However,continuedoperationabove125℃mayresultinapermanentdecreaseininductanceandanincreaseincoreloss.ThetoroidalcoresarecoatedwithEpoxycoating.Thecoatinghasadielectricstrengthof600voltagesminimum.基本计算公式：1初始磁导率（Initialpermeability）i：初始磁导率0：真空磁导率（410-7H/m）2环型磁心的磁导率Toroidalpermeability在环形磁心上测得的磁导率称为环磁导率。当磁心上绕组均匀分布，其杂散磁场能够忽视不计时，环磁导率近似于材料的磁导率。计算办法以下：＝L：电感（H）：磁心的磁导率N：匝数Ae：有效截面积(cm2)le：有效磁路长度(cm)InductancePermeabilityNumberofTurnsEffectiveAcrossSectionAreaEffectiveMagneticPathLength3电感系数（AL）Inductancefactor线圈的电感量L与线圈匝数N的平方之比，称为磁心的电感系数。它与磁心的形状、尺寸、磁导率、线圈绕法及线圈与磁心的相对位置等因素有关。即：AL=AL：电感系数(nH/N2)InductanceFactorL：绕N匝线时磁心的电感(nH)InductanceN：匝数NumberofTurns4磁场强度(Magnetizingforce)安培定律给出了磁场强度与电流、线圈匝数及磁路长度的关系。H=H：磁场强度（Oe）Magnetizingforce(Oe)N：匝数NumberofTurnsI：电流（A）Peakmagnetizingpathlength(amperes)le：有效磁路长度（cm）EffectiveMagneticPathLength5磁通密度峰值PeakACfluxdensityBmax=B：磁通密度峰值（Gauss）PeakACfluxdensityF：频率（Hz）frequencyAe：有效截面积（cm2）EffectiveAcrossSectionAreaErms：均方根电压值（V）RMSACvoltage6环形磁心有效磁路长度leEffectiveMagneticPathle=OD：磁环外径（cm）OuterdiameterID：磁环内径(cm)Innerdiameterle：有效磁路长度(cm)EffectiveMagneticPathLength7有效截面积AeEffectiveAcrossSectionArea对于环形磁心有效面积近似等于磁环的横截面积。8例子：8.1电感的计算已知条件以下：磁心：DS229125电感系数：AL=90nH/N2规定电感量：44H10%计算过程以下：考虑到电感系数公差10%，AL值应当在81~99nH/N2，因此在选择线圈的匝数时，应当考虑到这一点，相似的电感使用不同的磁心绕制时应选择不同的匝数。能够通过下列方式计算出线圈匝数的上下限。AL=81nH/N2时，此时绕制的匝数最多：N===23.3(匝)23(匝)AL=99nH/N2时，此时绕制的匝数最少：N===21.1(匝)21(匝)从上面的计算可知，为了得到44H的电感，绕制的匝数可心选择21~23匝之间，具体的匝数能够根据磁心的实际的电感系数而定。8.2滤波电感器设计根据下列条件，拟定应选磁环及绕绕制的匝数。条件以下：IDC=8（A）L8A=23.5H计算过程以下：8.2.1公式转换H=NI=8.2.2初步拟定磁场强度在电流10A下，电感量下降后不不大于50%。从磁场强度与初始磁导率变化率图能够得到，磁导率下降50%时对应的磁场强度H=40（Oe）。8.2.3初步选择磁心DS229125DS229125的有效磁路长度le=5.67cm8.2.4计算安匝数及匝数NI==405.67/0.4/3.14=180.5N=180.5÷8＝22.56≈23匝8.2.5核算L8A电感与否满足规定L0A=ALN2=90232=47.61I=8A时，电感量下降为50%L0A，L8A=47.6150%=23.81(H)在对电感加上8A的电流后电感量基本上能够满足规定。在实际的使用中选用磁心时，如果初次选定的磁心无法一次满足规定，能够根据上述办法，通过调节磁心尺寸及磁导率的方式来使L0A电感及加电流后的电感满足规定。材料特性表GeneralMaterialperformanceDMEGCMIXNO.ReferencePermeability(μe)TemperatureStability(ppm/℃)ToroidalColorCode-120280Lightgreen-21095Red-335370Hoarwhtie-68.535Darkpeagreen-7930Ironoxidered-835255Brightgreen-106150Grassgreen-1525190White-1855385Green-2675825Yellow-2822415Skyblue-3333635Gray-3433565Darkblue-3533665Lightgray-3885955Black-4060950Green-5275650Blue-11835560Black尺寸公差DimensionalTolerance(Includescoating)ToroidsOD(mm)ID(mm)HT(mm)DT14~DT72±0.50±0.50±0.50DT80~DT141±0.50±0.50±0.50DT150~DT225±0.64±0.64±0.76DT249~DT400±0.76±0.76±0.76DT520~DT650±1.27±1.27±1.27ECoreA(mm)B(mm)C(mm)D(mm)F(mm)G(mm)DE49~DE118±0.25±0.25±0.13±0.18±0.13±0.18DE125~DE162±0.38±0.38±0.18±0.25±0.18±0.25DE168~DE225±0.38±0.38±0.25±0.50±0.38±0.50DE305~DE450±0.76±0.76±0.38±0.50±0.38±0.50电感公差Inductancetolerance材质-2、-6、-7、-10、-17-1、-3、-8、--15、-18、-26、-28、-33、-34、-35、-38、-40、-45、-52公差±5%±10%DT14-26A12.53.431.701.520.8100.0120.0098DT14-45A16.5DT14-52A11.5DT16-14.44.061.981.520.9300.0150.014DT16-22.2DT16-36.1DT16-61.9DT16-72.0DT16-86.0DT16-101.3DT16-155.5DT16-170.8DT16-189.5DT16-2614.5DT16-4012.5DT16-4517.0DT16-5213.5DT20-15.25.082.241.781.150.0230.026DT20-22.5DT20-37.6DT20-62.2DT20-72.3DT20-87.8DT20-101.6DT20-156.5DT20-171.0DT20-1813.0DT20-2618.5DT20-4016.0DT20-4522.5DT20-5217.5DT25-17.06.483.052.441.500.0370.055DT25-23.4DT25-310.0DT25-62.76.483.052.441.500.0370.055DT25-72.9DT25-810.0DT25-101.9DT25-158.5DT25-171.2DT25-1817.0DT25-2624.5DT25-4020.5DT25-4531.0DT25-5223.0DT25-26B34.06.483.053.251.500.0490.074DT25-52C16.76.483.051.791.500.0270.041DT25-52F33.06.483.053.171.500.0480.073DT26-824.06.732.674.831.470.0900.133DT26-1841.5DT26-2657.0DT26-4577.0DT26-5256.0DT26-8A19.06.732.673.901.470.0730.107DT26-18A33.5DT26-26A45.0DT27-23.37.113.843.251.710.0470.080DT27-62.7DT27-72.8DT27-811.5DT27-102.2DT27-171.3DT27-1818.0DT27-2627.5DT27-5225.5DT30-18.57.803.843.251.840.0600.110DT30-24.3DT30-314.0DT30-63.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0DE450-8H140.011492.417.557.234.979.322.96.10140DE450-18H200.0DE450-52H270.0DP1632-140 材质 其它特性代码 长度英寸值的32倍 直径英寸值的64倍 DMEGC棒形磁心指标型号ALnH/N2OD(mm)L(mm)DP825-1407.63.4519.7DP1224-14012.54.8319.1DP1624-14016.06.3519.1DP1632-14016.06.3525.4DP1640-14015.06.4831.8DP2032-24020.07.9525.4DP2040-24020.07.9531.8DP2432-24025.59.5325.4DP2440-24026.59.5331.8DP2448-24025.09.5338.1DP2456-24022.59.5344.5DP3240-14034.512.731.8DP3248-14033.012.738.1DP3256-14032.012.744.5DP3264-14031.012.750.8DP4040-14037.515.931.8DP4048-14041.515.938.1DP4876-14049.519.160.3DP6464-14080.025.450.8材料特性特性Characteristics单位Unit参数Parameter参考磁导率ReferencePermeability--35饱和磁通密度BsSaturationMagneticFluxDensity（mT）800~10000居里温度CurieTemperature（℃）>400温度系数（-50℃~125℃）TemperatureCoefficient10-6/℃≈350密度Density（g/cm3）6.5使用温度范畴TemperatureRange℃-50~125功率损耗CoreLossmw/cm3450＠50kHz,50mT材料特点：小的安装体积。高的储能能力。优良的频率特性，工作频率能够达成到100kHz以上。优良的叠加特性，高饱和电流。产品重要用途：用于笔记本电脑及掌上电脑。用于电源系统中的DC/DC变换器。高频电感器，扼流圈。其它有关电子线路。

材料特性曲线以上曲线提供了材料的典型值，供客户参考。以上曲线提供了材料的典型值，供客户参考。

图1图2图3图4图5图6SMD系列产品型号图片A(mm)B(mm)Ｃ(mm)Ｄ(mm)Ｅ(mm)F(mm)G(mm)AL(nH/N2)DQ6.8系列16.86.81.8~3.00.82.453.25.330~6026.86.80.91.63.2DQ10.0系列110.010.02.0~5.51.0~1.23.8/4.0/4.24.0/4.28.240~80210.010.01.0~1.22.53.5~4.5DQC10系列310.07.02.0~3.50.8~1.14.26.08.040~80410.07.00.8~1.2DQ12.7系列112.712.72.5~7.51.0~1.54.8/5.2/5.54.2/4.810.4/10.840~80212.712.71.0~1.53.34.2DQY12.7系列512.712.73.0~5.01.0~1.55.510.53.040~80612.712.71.0~1.53.03.07.53.2备注：产品的总高与壁高都能够在较大范畴内调节。DQ6.8系列外形尺寸的典型公差为±0.15mm；DQ10及DQC10系列外形尺寸的典型公差为±0.20mm；DQ12.7及DQY12.7系列外形尺寸的典型公差为±0.25mm，具体参见产品图纸。电感的公差普通为±15%。详情请与进行咨询。简介合金金属磁粉心重要涉及铁硅铝、铁镍钼、铁镍、MF合金四种材质。重要用于高频大功率储能电感器、功率因数纠正电感、滤波器、扼流圈、大功率高频电源开关电源变压器等。每种材料都有其独特的优点，铁镍钼磁粉心功率损耗最低，稳定性最佳，但是价格最贵，因此铁镍钼产品普通多用于高精密电路中；铁镍磁粉心含有最优的直流叠加特性，特别合用于直流成分较高的电路中。铁硅铝磁粉心是三种材料中价格最低的，直流叠加特性略差于铁镍钼与铁镍磁粉心，功率损耗介于铁镍钼与铁镍磁粉心之间。MF铁基合金材料，直流叠加特性与铁镍磁粉心相近，功率损耗略高于铁镍磁粉心；直流叠加特性优于铁硅铝磁粉心，功率损耗高于铁硅铝磁粉心；直流叠加特性与铁粉心相称，功率损耗明显优于普通的铁粉心。合金材料名称GeneralmaterialType材料牌号材料名称参考磁导率颜色S026铁硅铝26黑色S060铁硅铝60黑色S075铁硅铝75黑色S090铁硅铝90黑色S125铁硅铝125黑色WH35MF材料35黑色WH55MF材料55黑色WH75MF材料75黑色M060铁镍钼60灰色M125铁镍钼125灰色H060铁镍60蓝色H125铁镍125蓝色备注：外径12.7mm以上产品的电感公差为±10%，外径12.7mm下列产品的电感公差为±15%铁硅铝材料特点1．磁心内有均匀分布的气隙。2．饱和磁通密度能够达成10000Gs。3．良好的直流叠加特性。4．低的功率损耗，低于铁镍磁粉心与铁粉心。5．能够在200℃高温下下使用不存在失效问题。6．在25℃以上工作时，电感含有负的温度系数。7．磁导率从26到125多个规格。1．PFC电路中。2．在线噪声滤波器。3．开关电源（SMPS）中电感器。4．脉冲变压器及单端反激变压器。铁硅铝材料特性特性Characteristics单位Unit参数Parameter初始磁导率InitialPermeability--26~125饱和磁通密度BsSaturationMagneticFluxDensity（Gs）10000居里温度CurieTemperature（℃）>400温度系数（-40℃~125℃）TemperatureCoefficient10-6/℃300密度Density（g/cm3）5.7温度范畴TemperatureRange℃-55~200功率损耗CoreLossmW/cm3850@100kHz,100mT铁基合金MF材料特性特性Characteristics单位Unit参数Parameter初始磁导率InitialPermeability--35~90饱和磁通密度BsSaturationMagneticFluxDensity（Gs）>10000居里温度CurieTemperature（℃）>400温度系数（-40℃~125℃）TemperatureCoefficient10-6/℃400密度Density（g/cm3）5.60温度范畴TemperatureRange℃-55~200功率损耗CoreLossmW/cm32900@100kHz,100mTMF材料特点1．磁心内有均匀分布的气隙。2．饱和磁通密度不不大于10000Gs。3．优良的直流叠加特性。4．功率损耗低于铁粉心。5．能够在200℃高温下下使用不存在失效问题。6．成本低，在诸多领域能够替代铁粉心/铁硅铝/铁镍磁粉心。7．磁导率涉及从35到90的多个规格。MF材重要用途(Ma-FluxPowderCoreApplication)1．PFC电路中。2．在线噪声滤波器。3．开关电源（SMPS）中电感器。4．脉冲变压器及单端反激变压器。铁镍钼材料特性特性Characteristics单位Unit参数Parameter初始磁导率InitialPermeability--60~125饱和磁通密度BsSaturationMagneticFluxDensity（Gs）7000~8000居里温度CurieTemperature（℃）>400温度系数（-40℃~125℃）TemperatureCoefficient10-6/℃250密度Density（g/cm3）7.8温度范畴TemperatureRange℃-55~200功率损耗CoreLossmW/cm3600@100kHz,100mT铁镍钼材料特点1．磁心内有均匀分布的气隙。2．饱和磁通密度能够达成7000Gs以上，低于铁硅铝的10000Gs与铁镍的13000Gs。3．最低的功率损耗，铁镍钼的功率损耗是四种合金材料中最低的。4．优秀的直流叠加特性5．较高的储能能力。6．良好的温度稳定性。7．良好的环境稳定性(潮热、振动及冲击等)。8．能够在高温下使用不存在失效问题。铁镍钼材料重要用途(MPPCoreApplication)1．开关电源（SMPS）中输出电感器。2．高Q滤波器。3．谐振电感。4．单端反激变压器。5．精密电路中铁镍材料特性特性Characteristics单位Unit参数Parameter初始磁导率InitialPermeability--26~125饱和磁通密度BsSaturationMagneticFluxDensity（Gs）13000居里温度CurieTemperature（℃）>400温度系数（-40℃~125℃）TemperatureCoefficient10-6/℃300密度Density（g/cm3）7.4温度范畴TemperatureRange℃-55~200功率损耗CoreLossmW/cm31200@100kHz，100mT铁镍材料特点1．磁心内有均匀分布的气隙。2．高饱和磁通密度，不易饱和。3．功率损耗高于铁硅铝及铁镍钼材料，但是低于铁粉心。4．优秀的直流叠加特性。5．高的储能能力。6．能够在高温下持续使用，不存在失效问题。1．PFC电路中。2．在线噪声滤波器。3．开关电源（SMPS）中电感器。4．脉冲变压器及单端反激变压器。PermeabilityvsFrequencyMPPCoreLossvsDensityMPP125(M125)CoreLossvsDensityMPP60(M060)

PermeabilityvsFrequencySendustCoreLossvsDensitySendustCoreLossvsDensityMa-Flux55(WH55)PermeabilityvsDCBiasMa-Flux55(WH55)PermeabilityvsDCBiasHi-Flux60(H060)PermeabilityvsDCBiasHi-Flux125(H125)产品型号喷涂前Beforecoating喷涂后Aftercoating截面积A(cm2)磁路长l(cm)体积V(cm3)ODmmIDmmHTmmODmaxmmIDminmmHTmaxmmD□063□□□6.352.792.796.992.793.430.04701.3610.0640D□068□□□6.863.965.087.503.465.720.04881.650.1196D□068□□□A6.863.963.427.503.464.060.07251.650.0805D□078□□□7.873.923.188.513.433.820.06151.7870.1099D□097□□□9.654.783.1810.294.273.810.07522.180.1639D□102□□□10.205.083.9610.804.574.570.1002.380.238D□103□□□10.305.645.6610.975.186.300.1232.430.301D□112□□□11.206.353.9611.895.894.570.09062.690.244D□127□□□12.707.624.7513.507.005.450.11403.120.356D□127□□□B12.707.626.3513.507.007.150.15243.120.475D□146□□□14.608.505.5015.08.105.90.15873.540.562D□166□□□16.6010.206.3517.409.507.100.19204.110.789D□173□□□17.309.656.3518.009.004.050.2324.140.960D□203□□□20.3012.706.3521.1012.107.100.2265.091.15D□229□□□22.914.07.6223.6013.408.370.3315.671.88D□236□□□23.614.48.8924.3013.709.700.3885.882.28D□270□□□26.914.711.2027.6014.1011.900.6546.354.15D□270□□□A26.914.77.9227.6014.108.620.4626.352.94D□330□□□33.019.910.733.8019.3010.700.6728.155.48D□358□□□35.822.410.536.7121.5011.260.6788.986.09D□384□□□38.421.58.2639.4020.869.020.6579.386.16D□400□□□39.924.114.540.7023.3015.381.0729.8410.5D□467□□□46.724.118.047.6423.3218.921.99010.7421.37D□468□□□46.728.715.247.6427.9216.121.34011.6315.58D□508□□□50.831.813.351.8030.8014.401.25112.7315.93D□571□□□57.226.415.258.0025.6016.002.2912.528.62D□572□□□57.235.614.058.034.7414.861.44414.3020.65

磁导率Perm.铁镍钼(MPP)铁镍(Hi-Flux)铁硅铝(Sendust)ALnH/N2ODmmIDmmHTmm60DM063060DH063060DS063060246.352.792.7975DS0630753090DS06309036125DM063125DH063125DS06312550147DM06314759160DM0631606460DS068060DS068060DS068060336.863.965.0875DS0680754290DS06809050125DM068125DH068125DS06812570147DS06812581160DS0681258960DS068060ADS068060ADS068060A226.863.963.4275DS068075A2890DS068090A34125DM068125ADH068125ADS068125A47147DS068147A54160DS068160A6060DM078060DH078060DS078060257.873.963.1875DS0780753190DS07809037125DM078125DH078125DS07812552147DM07814762160DM07816066磁导率Perm.铁镍钼(MPP)铁镍(Hi-Flux)铁硅铝(Sendust)ALnH/N2ODmmIDmmHTmm60DM097060DH090060DS097060259.654.783.1875DS0970753290DS09709038125DM097125DH097125DS09712553147DM09714763160DM0971606860DM097060BDH090060BDS097060B329.654.783.9675DS097075B4090DS097090B48125DM097125BDH097125BDS097125B66147DM097147B78160DM097160B8460DM102060DH112060DS1020603210.25.083.9675DS1020754090DS10209048125DM102125DH102125DS10212566147DM10214778160DM1021608460DM112060DH112060DS1120602611.26.353.9675DS1120753290DS11209038125DM112125DH112125DS11212553147DM11214763160DM1121606860DM127060DH127060DS1270602712.77.624.7575DS1270753490DS12709040125DM127125DH127125DS12712556147DM12714767160DM12716072磁导率Perm.铁镍钼(MPP)铁镍(Hi-Flux)铁硅铝(Sendust)ALnH/N2ODmmIDmmHTmm60DM127060BDH127060BDS127060B3612.77.626.3575DS127075B4590DS127090B53125DM127125BDH127125BDS127125B76147DM127147B87160DM127160B9560DM166060DS166060DS1660603516.610.26.3575DS1660754390DS16609052125DS166125DS166125DS16612572147DS16614788160DS1661609260DM173060DH173060DS1730604317.39.656.3575DS1730755390DS173125DS173125DS173147105160DM203060DM203060DS2030603220.312.76.3575DS2030754190DS20309049125DM203125DH203125DS20312568147DM20314781160DM20316087磁导率Perm.铁镍钼(MPP)铁镍(Hi-Flux)铁硅铝(Sendust)ALnH/N2ODmmIDmmHTmm26DS2290261922.914.07.6260DM229060DH229060DS2290604375DS2290755490DS22909065125DM229125DH229125DS22912590147DM229147106160DM22916011526DS2360602223.614.48.8960DM236060DH236060DS2360605175DS2360756390DS23609076125DM236125DH236125DS236125105147DM236147124160DM23616013526DS2700263226.914.711.260DM270060DH270060DS2700607575DS27007594125DM270125DH270125DS27012515790DS270090113147DM270147185160DM27016020126DS3300262833.019.910.760DM330060DH330060DS3300606175DS3300757690DS33009091125DM330125DH330125DS330125127147DM330125150160DM330125163磁导率Perm.铁镍钼(MPP)铁镍(Hi-Flux)铁硅铝(Sendust)ALnH/N2ODmmIDmmHTmm26DS3580262435.822.410.560DM358060DH358060DS3580605675DS3580757090DS35809084125DM358125DH358125DS358125117147DM358147138160DM35816015026DS3840262338.421.58.2860DM384060DH384060DS3840605375DS3840756690DS38409079125DM384125DH384125DS384125110147DM384147129160DM38416014026DS4000263539.924.114.560DM400060DH400060DS4000608175DS40007510190DS400090121125DM400125DH400125DS400125168147DM400147198160DM40016021526DS4670265946.724.118.060DM467060DH467060DS46706013575DS46707516990DS467090202125DM467125DH467125DS467125281147DM467147660160DM467160360磁导率Perm.铁镍钼(MPP)铁镍(Hi-Flux)铁硅铝(Sendust)ALnH/N2ODmmIDmmHTmm26DS4680263746.728.715.260DM468060DH468060DS4680608675DS46807510790DS468090128125DM468125DH468125DS468125178147DM468147210160DM46816022826DS5080263250.831.813.560DM508060DH508060DS5080607375DS5080759190DS508080109125DM508125DH508125DS508125152147DM508147179160DM50816019560DM571060DH571060DS57106013875DS57107517290DS571090207125DS571125DS571125DS571125287147DS571147306160DS57116033326DS5720263357.235.614.060DM572060DH572060DS5720607575DS5720759490DS572090112125DS572125DS572125DS572125156147DS572147185160DS57216020026DS6400268463.531.825.460DM640060DM640060DS64006019475DS64007524290DS640090290125DM640125DH640125DS640125403DMEGC型号AL值nH/N2OD(mm)ID(mm)HT(mm)l(cm)Ae(cm2)Ve(cm3)DT25-WH5517.0