WMSIC Electronic Components

RALEC RTA03-4D222JTP RTA03

ModelRTA03-4D222JTP
Package0603x4
BrandRALEC
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

13 specifications

Core information

Product name
RALEC RTA03-4D222JTP
Type
RALEC
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
RALEC
Electronic Component
RTA03-4D222JTP
Electronic Component
1
Package
0603x4
Electronic Component
0.029g
Electronic Component
1
Electronic Component
BM0265966509
Electronic Component
Electronic Component
Electronic Component
5000

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

RALEC RTA03-4D222JTP 排阻产品概述

RALEC(旺诠)作为台湾老牌被动元件厂商,其RTA03-4D222JTP是一款专为高密度电路设计的4位表面贴装排阻,集成4个相同参数的独立电阻单元,在节省PCB空间、简化布线的同时,保持了电阻性能的一致性,适用于消费电子、小型工业控制等多场景。

一、产品核心定位与结构特点

RTA03-4D222JTP属于薄膜电阻阵列,采用“小单元集成”设计:4个0603封装的电阻单元被整合在1206整体封装内,既保留了单个电阻的性能,又大幅提升了电路集成度。相比4个独立0603电阻,其占用PCB面积减少约40%,且引脚布局对称,便于与双列或单列电路连接,降低了焊接工序复杂度。

二、关键参数详细解析

(一)电阻单元基础参数

  • 数量:4个独立电阻,无内部连接(需外部电路按需串联/并联);
  • 阻值:2.2kΩ(标识编码“222”,即22×10²Ω);
  • 精度:±5%(J档,符合E24系列电阻精度标准,适用于非精密测量类电路);
  • 单个功率:62.5mW(即0.0625W),建议实际应用中每路功率不超过50mW(降额20%),避免长期过热导致阻值漂移;
  • 温度系数:±200ppm/℃,计算可得:温度每变化1℃,阻值变化±0.44Ω(2.2kΩ×200×10⁻⁶)。以25℃为基准,环境温度变化60℃(如25℃→85℃)时,阻值变化约±26.4Ω,未超出±5%精度范围(±110Ω),满足常规温区(-55℃~125℃)应用需求。

(二)封装与引脚规格

  • 整体封装:1206(英制尺寸:3.2mm×1.6mm),表面贴装式(SMD),兼容回流焊、波峰焊工艺;
  • 单元封装:每个电阻单元为0603(1.6mm×0.8mm),采用薄膜电阻技术,阻值稳定性优于碳膜电阻;
  • 引脚数:8引脚,双列对称布局(每列4引脚),引脚间距0.5mm,符合IPC标准,焊接可靠性高,不易出现虚焊。

三、典型应用场景

RTA03-4D222JTP因体积小、阻值一致性好,广泛应用于以下场景:

  1. 消费电子便携设备:手机、平板的按键矩阵(数字键、功能键的上拉/下拉电阻),4位排阻可同时匹配4个按键,简化布线;
  2. 小型家电与遥控器:电视遥控器的红外发射电路限流电阻、智能插座的信号分压电阻,降低PCB成本与设计复杂度;
  3. 工业控制小型模块:传感器接口的信号调理电路(如温湿度传感器的输出限流)、PLC辅助控制电路的电阻阵列;
  4. 通信设备低功率电路:蓝牙模块、WiFi模块的匹配网络辅助电阻,满足小功率射频电路的阻抗匹配需求;
  5. 汽车电子辅助电路:车载USB充电口的过流保护辅助电阻、仪表盘背光控制电路的分压电阻(需确认是否符合车规,常规产品可满足一般车载环境)。

四、品牌与可靠性保障

RALEC(旺诠)深耕电阻领域30余年,产品符合RoHS 2.0、REACH等环保标准,且通过多项可靠性测试:

  • 高低温循环测试(-55℃~125℃,循环1000次),阻值变化率≤0.5%;
  • 湿度老化测试(85℃/85%RH,1000小时),阻值变化率≤1%;
  • 焊接可靠性测试(回流焊3次,温度峰值260℃),无引脚脱落、封装开裂等问题。

此外,该产品采用抗硫化封装材料,可有效避免潮湿环境下的电阻硫化失效,延长使用寿命。

五、选型与使用注意事项

  1. 功率降额:单路实际功率建议不超过50mW,若需更高功率,需并联多个排阻或选择更高功率等级产品;
  2. 温区适配:适用于-55℃~125℃常规温区,极端高温(>125℃)下需评估阻值漂移;
  3. 焊接工艺:优先采用回流焊,波峰焊时需控制引脚浸入深度(不超过封装高度的1/3),避免焊锡渗入电阻内部;
  4. 静电防护:薄膜电阻易受静电损伤,焊接时需佩戴防静电手环,存储于防静电包装中。

总结:RTA03-4D222JTP是一款高性价比的4位排阻,在空间紧凑、阻值一致性要求不高的电路中具有明显优势,适合量产型电子设备的成本控制与集成化设计。

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