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CN34JTN330是大毅科技推出的一款0603×4封装表面贴装排阻,属于4通道网络电阻器,专为高密度、小型化电子电路设计,兼顾性能稳定性与集成度优势,广泛适用于消费电子、工业控制、通信设备等领域。
该排阻由4个独立的33Ω电阻集成在同一封装内,引脚总数为8(每通道2个引脚),符合表面贴装工艺要求,可通过回流焊、波峰焊等常规工艺焊接。产品采用成熟的薄膜电阻工艺制造,确保阻值一致性与长期可靠性,是离散电阻的高效替代方案。
标称阻值为33Ω,精度等级为**±5%**,满足多数电子电路的阻值匹配需求(如分压、限流、信号衰减等)。在25℃标准温度下,阻值偏差控制在31.35Ω~34.65Ω范围内,可覆盖常规设计的误差裕量,无需额外校准即可满足多数应用场景。
单个电阻的额定功率为62.5mW,4通道总功率为250mW。需注意:工作时每通道的实际功耗不得超过62.5mW(即最大工作电流约13.7mA,计算方式:(I=\sqrt{P/R}=\sqrt{62.5mW/33Ω}≈13.7mA)),避免因过热导致阻值漂移或元件损坏。
温度系数为**±200ppm/℃**,表示环境温度每变化1℃,阻值变化量为±200×10⁻⁶×33Ω≈±6.6mΩ。在常规工作温度范围(-55℃~125℃)内,最大阻值漂移约±0.13Ω(180℃温差×6.6mΩ/℃),满足一般工业与民用场景的温度稳定性要求,无需额外温控措施即可稳定工作。
采用0603×4封装(英制:0.06英寸×0.03英寸×4通道;公制:1.6mm×0.8mm×4通道),封装尺寸紧凑,相比离散的4个0603电阻,可节省约40%的PCB布局空间,显著提升电路密度,适配穿戴设备、小型通信模块等对体积敏感的设计。
CN34JTN330的8个引脚采用常规表面贴装引脚布局,每通道2个引脚呈线性排列,便于PCB布线(建议焊盘尺寸匹配0603封装标准,宽度0.4mm0.5mm,长度1.2mm1.4mm)。焊接时需遵循大毅科技推荐的回流焊温度曲线(峰值温度245℃±5℃,时间≤30秒),确保每个引脚焊接牢固,避免虚焊或冷焊。
综上,CN34JTN330排阻凭借紧凑的封装、稳定的性能与高集成度,成为小型化电子设备中替代离散电阻的理想选择,适用于多种需要多路电阻网络的应用场景,是大毅科技针对高密度设计推出的高性价比产品。
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