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RALEC(旺诠)推出的RTA03-4D470JTP是一款集成4个独立电阻的表面贴装排阻,专为高密度电路设计优化,兼具小型化与可靠性,广泛适配消费电子、工业控制等多领域应用。
RTA03-4D470JTP属于无公共端四电阻排阻,集成4个0603封装的独立电阻于单一1206封装内,引脚数为8(每个电阻对应2个独立引脚),可灵活实现电阻的并联、串联或单独使用,避免共端排阻的电路限制。产品采用表面贴装工艺,兼容常规SMT生产线,适合大规模量产。
标称阻值为47Ω(对应代码“470”,行业三位代码规则:前两位为有效数字,第三位为10的幂次),精度等级为±5%(代码“J”),满足一般电路的阻值误差要求,无需额外校准即可适配多数信号调理、分压电路。
单个电阻的额定功率为62.5mW(0.0625W),实际最大允许电流约为36.5mA(计算方式:(I=\sqrt{\frac{P}{R}}=\sqrt{\frac{0.0625}{47}}\approx0.0365A))。需注意:排阻无整体额定功率,需单独评估每个电阻的功率负载,避免单电阻过功率损坏。
温度系数为±200ppm/℃,表示温度每变化1℃,阻值变化±200×10⁻⁶。以47Ω为例,温度变化100℃时,阻值变化约±0.94Ω,可覆盖常规环境温度(-40℃~+85℃)下的稳定性要求,满足工业、消费电子的温区需求。
整体采用1206封装(3.2mm×1.6mm),单个集成电阻为0603封装(1.6mm×0.8mm),集成后虽总面积与4个独立0603电阻相当,但通过紧凑布局减少了PCB布线复杂度与焊接点数量,提升生产效率。
8引脚设计为“每个电阻独立两端”,无公共端,引脚顺序通常为:1-2(电阻1)、3-4(电阻2)、5-6(电阻3)、7-8(电阻4),便于电路中灵活调用单个或多个电阻,适配不同电路拓扑。
引脚采用镀锡工艺,抗氧化性能良好,焊接后接触电阻低(≤10mΩ),通过回流焊、波峰焊工艺后,引脚与PCB的结合强度符合IPC-610标准,长期使用无虚焊风险。
手机、平板、智能穿戴设备的信号分压网络、上拉/下拉电阻,利用其小型化特点适配设备内部紧凑空间;同时4个独立电阻可满足多通道信号调理需求。
PLC、传感器接口的滤波网络、电阻匹配电路,±200ppm/℃的TCR可稳定应对工业环境的温度波动(-40℃~+85℃),保证信号传输精度。
路由器、交换机的接口电阻网络,高密度集成减少PCB层数,降低布线干扰,提升设备稳定性。
车载显示屏、中控的信号调理电路(非安全关键场景),旺诠的品质管控可满足汽车级的可靠性要求(部分批次符合AEC-Q200标准)。
RALEC(旺诠)是台湾资深被动元件制造商,拥有30余年电阻生产经验,产品通过ISO9001、ISO14001认证,部分产品获得AEC-Q200(汽车级)、RoHS(环保)认证。RTA03-4D470JTP经过以下可靠性测试:
以上概述覆盖了RTA03-4D470JTP的核心特性与应用,可作为选型、设计的参考依据。
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