WMSIC Electronic Components

Walsin WR04X1212FTL

ModelWR04X1212FTL
Package0402
Brand(Walsin)
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

20 specifications

Core information

Product name
(Walsin) WR04X1212FTL
Type
WALSIN
Unit
Electronic Component
Minimum package
10000 圆盘

Technical parameters

Power
62.5mW
Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
(WALSIN)
Electronic Component
WR04X1212FTL
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.014g
Electronic Component
12.1kΩ
Electronic Component
50
Electronic Component
BM0265429560
Operating Temperature
55℃~+155℃
Operating Voltage
50V
Electronic Component
±100ppm/℃

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

WR04X1212FTL厚膜电阻产品概述

一、产品基本属性与核心参数

WR04X1212FTL是华新科(Walsin) 推出的0402封装厚膜电阻,属于WR04X系列(针对小功率精密应用的厚膜电阻线),核心参数明确且适配常规电子设计需求:

核心属性 具体参数 关键说明 阻值/精度 12.1kΩ ±1% 符合E96精密阻值系列,满足信号调理精度需求 额定功率 1/16W(62.5mW) 适用于小功率信号/辅助电源电路 额定工作电压 50V 需结合功率降额(实际电压需≤27.7V) 温度系数(TCR) ±100ppm/℃ 温度每变1℃,阻值漂移≤0.0121Ω 工作温度范围 -55℃~+155℃ 覆盖工业级、消费电子宽温场景 封装尺寸 0402(英制,对应公制1005) 1.0mm×0.5mm,适配高密度PCB设计

二、设计与工艺特点

华新科采用厚膜丝网印刷烧结工艺,平衡了成本与性能,核心设计优势包括:

  1. 小型化高密度适配:0402封装体积仅为0.5mm×1.0mm,可在1cm² PCB上布局超1000个电阻,适合可穿戴设备、智能手机等小型终端;
  2. 阻值一致性控制:通过精密印刷与高温烧结(850℃左右),批次间阻值偏差≤0.5%,避免电路批量生产时的性能波动;
  3. 端电极可靠性:采用镍-锡双层镀层,兼容回流焊(峰值245℃)、波峰焊(峰值260℃)等常规工艺,焊接后拉脱力≥5N(符合IPC-J-STD-001标准);
  4. 功率降额设计:额定功率针对连续工作场景,实际应用建议70%降额(≤43.75mW),可将长期漂移控制在±0.1%以内。

三、典型应用场景

WR04X1212FTL的参数特性使其适配多类电子领域,核心应用方向包括:

  1. 消费电子:
    • 智能手机/平板:电源管理模块的分压电阻、音频 codec 的偏置电阻;
    • 可穿戴设备(智能手表/手环):心率传感器的信号放大滤波电阻、电池充电电路的限流电阻;
  2. 工业控制:
    • PLC模拟量输入通道:信号衰减电阻(将传感器0-5V信号降至0-1V);
    • 工业传感器(温度/压力):电桥平衡电阻(如PT100温度传感器的桥臂电阻);
  3. 通信设备:
    • 路由器/交换机:电源滤波RC网络的电阻、以太网接口的信号匹配电阻;
    • 小型基站:射频前端的偏置电路电阻;
  4. 汽车电子(非safety级):
    • 车载中控的小功率控制电路、车身传感器(如雨量传感器)的信号处理电阻。

四、可靠性与环境适应性

本产品通过多项可靠性测试,满足长期使用需求:

  1. 宽温稳定性:在-55℃~+155℃范围内,阻值漂移≤±0.5%(典型值),可适应沙漠(高温)、寒带(低温)等极端环境;
  2. 抗浪涌能力:厚膜电阻的浪涌耐受能力优于薄膜电阻,可承受≤100V/10μs的瞬态浪涌(符合IEC 61000-4-5标准);
  3. 长期可靠性:
    • 1000小时高温负载测试(125℃,70%额定功率):阻值漂移≤±0.1%;
    • 85℃/85%RH湿热测试(1000小时):阻值变化≤±0.2%;
  4. ESD防护:支持≤2kV(人体模型)静电冲击,避免生产/使用中的静电损坏。

五、选型与使用注意事项

  1. 替代选型:
    • 同品牌:华新科WR04X1202FTL(12kΩ±1%)、WR04X1222FTL(12.2kΩ±1%);
    • 跨品牌:国巨RC0402FR-0712K1L、三星CL05K121JANF(需确认封装/精度匹配);
  2. 焊接注意:
    • 回流焊:峰值温度≤245℃,回流时间≤10秒;
    • 波峰焊:避免二次焊接(防止镀层氧化);
  3. 降额使用:
    • 功率:连续工作≤43.75mW;
    • 电压:实际工作≤27.7V(对应电流≈2.29mA);
  4. 存储条件:常温干燥(0-40℃,湿度≤60%),避免长期暴露于高湿环境。

WR04X1212FTL以平衡的成本、可靠的性能与小型化设计,成为消费电子、工业控制等领域的常用精密厚膜电阻选择,适配绝大多数小功率精密电路的需求。

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