【正文】 duction Multilayer ceramic chip capacitor is a kind of ceramic dielectric capacitor with small size, high capacitance per volume, high accuracy, suited surface mounted technology (SMT). It is widely used in electronic circuitry, mounted printed circuit board, and hybrid IC. These different functions require specific capacitor properties.▉ MLCC的分類：根據(jù)所采用陶瓷介質(zhì)材料的類型，MLCC可劃分為兩大類：1類陶瓷介質(zhì)MLCC具有極高的穩(wěn)定性，其電容量幾乎不隨時(shí)間、交流信號、外加直流偏壓的變化而改變，同時(shí)具有極低介質(zhì)損耗，即高Q值。Manufacture process of MLCC Ceramic powders, which formulation and crystal phase fitted the demand of designing, are carefully mixed with solvent and binder, and then finely milled as slurry. The very thin green sheets can be obtained by casting or spraying the slurry. After this, electrode is printed on the sheets which then be stacked, pressed and cut into chips. The green chip is cofired at temperatures between 1000 and 1400℃ to bee a monolithic block.The final product can be formed by metalizing the termination of the pact ceramic chip. █ MLCC的結(jié)構(gòu)MLCC的電容量與內(nèi)電極交疊面積A、介質(zhì)層數(shù)n和陶瓷介質(zhì)材料的相對介電常數(shù)εr呈正比，與單層介質(zhì)厚度T呈反比關(guān)系。0603（1608）177。60ppm/℃ 55℃ ~ +125℃X7R： 177。20% D：177。H177。10K50KC177。Tape and reel packaging is currently the most promising system forhighspeed production, A typical 180mm(7inch)diameter reel contains 2,000 to 15,000 capacitors,330mm(13inch)diameter reel contains 10,000 to 50,000 capacitors, Tape and reel packaging prises paper tapes and plastic tapes.█ 紙帶標(biāo)準(zhǔn) Paper tape specifications 單位：mm177。177。177。177。D50Tape Width（mm）G（mm）T（max）（mm）D（mm）81808330Full RadiusG█ 紙帶規(guī)格： Taping Figure:膠帶規(guī)格： Plastic Figure: Trailer Worker Unseal Leader Feeding DirectionPacking包裝Minimum length of Empty partments預(yù)留空格的最短長度TapeTrailerUnsealLeaderPaperorPlastic160 mm160mm160 mm█ 紙帶性能 Performance of Taping ● 紙帶和上蓋帶的剝離強(qiáng)度.Strength of Carrier Tape and Top Cover Tape● 紙帶 Carrier Tape。注：電容器所施加的直流電壓和交流峰值電壓之和應(yīng)不超過額定電壓，交流電壓峰值不應(yīng)超過允許無功功率所額定的值。12耐焊接熱外觀無明顯缺陷150℃、1小時(shí)專門預(yù)處理（Y5V）后放置24小時(shí)；將測試電容在120150℃預(yù)熱1分鐘，浸入260177。電容量變化Y5V： 177。2℃相對濕度：RH90%～95%持續(xù)時(shí)間：21天，恢復(fù)24177。30%損耗角正切值Y5V：tgδ≤1000104 （UR≥25V）tgδ≤1600104 （UR≤16V）絕緣電阻Y5V：Ri≥2000MΩ或RiC≥5 MΩμF取較小者Specifications and Test MethodsNoItem SpecificationTest MethodClass21Category temperature rangeY5V: 30℃ ~ +85℃2Rated Voltage (UR)See the previousThe rated voltage is defined as the maximum voltage which may be applied continuously to the capacitor at the rated temperature. (The sum of the DC voltage and the AC voltage applied to the capacitor should not exceed the rated voltage. The peak of the AC voltage should not exceed the value defined as the reactive power.3Visual ExaminationNo defects or abnormalitiesVisual Inspection4Dimensions Within the specified dimension.Using calipers 5Voltage ProofUR, 1min, No breakdown or flashoverNo failure shall be observed when 250% of the rated voltage is applied between the terminations for 1 minute6Insulation Resistances (Ri)C ≤ , Ri ≥ 4000MΩC , RiC ≥ 100 MΩμFThe insulati