功率型 厚膜 无感 电阻器 Power type Thick film Non inductive Resistor
l 安装在散热器，于 25℃时，额定功率达 50 瓦；在不使用散热片，25℃常温下，额定功率是 3 瓦
Installed on the radiator, with a rated power of 50 watts at 25 ℃ ; The rated power is 3 watts at room temperature of 25 ℃ without using heat sinks
l TO-220 模压塑封包装
TO-220 Molded plastic packaging
l 只用一颗 M3（3mm）螺丝，便可以安装于散热器上
Only one M3 (3mm) screw is needed to install it on the radiator
l 保护性高的模压塑胶封外盒，且易于安装
Highly protective molded plastic outer box, and easy to install
l 高绝缘度 High insulation degree
l 无感设计 Sensorless design
用于电源供应器的入口端、低能量脉冲负载、射频功率放大器之终端电阻、电压整流器、缓冲电路器、UPS Used for the inlet end of power supplies, low-energy pulse loads, terminal resistors of RF power amplifiers, voltage rectifiers, buffer circuits, UPS
©2025 V1.0
功率型 厚膜 无感 电阻器 Power type Thick film Non inductive Resistor
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氧化铝基板 |
Alumina Substrate |
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电阻层 |
Resistor Layer |
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引脚 |
Lead |
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模压封装 |
Molding |
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测试项目 |
基本要求 |
测试方法 |
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Test project |
Basic Requirements |
Test Method |
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短时间过负荷 |
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2 倍额定功率，但不超过最大耐压的 1.5 倍，连续 5 秒钟 |
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Short term overload |
△R±0.3% |
2 times the rated power, but not exceeding 1.5 times the |
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maximum withstand voltage, for 5 consecutive seconds |
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负载寿命 |
△R±1.0% |
额定功率下 2000 小时 |
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Load Life |
2000 hours at rated power |
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40±2℃、90～95%湿度下，在最大工作电压下维持 1000 小 |
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耐湿测试 |
△R±0.5% |
时（1.5 小时“开”，0.5 小时“关”） |
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Humidity test |
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Maintain 1000 hours at maximum operating voltage at 40 ±2 ℃ |
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and 90-95% humidity (1.5 hours "on", 0.5 hours "off") |
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焊接附著性 |
90%以上覆盖新锡 |
245±5℃持续 3 秒 |
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solderability |
Over 90% coverage of new tin |
245 ± 5 ℃ for 3 seconds |
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热冲击测试 |
△R±0.3% |
-65℃～﹢150℃，100 次循环 |
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Thermal Shock |
65 ℃~+150 ℃, 100 cycles |
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引线强度 |
△R±0.2% |
（拉力测试）2.4 牛顿 |
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Lead strength |
(Tensile test) 2.4 Newtons |
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高频震动 |
△R±0.2% |
20 公克震动 |
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High-frequency vibration |
20 grams of vibration |
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绝缘强度 |
△R±0.15% |
1800V AC，60 秒 |
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Dielectric Strength |
1800V AC，60 seconds |
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温度循环 |
ΔR±0.3% |
-65°C~+150°C，1000 次循环 |
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Temperature Cycling |
-65°C~+150°C, 1000 cycles |
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型号 |
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阻值范围 Resistance Range |
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温度系数 |
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Type |
±0.5% |
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±1% |
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±5% |
TCR（PPM/℃） |
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≥0.1Ω～1Ω |
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±300 |
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≥1Ω～5Ω |
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±100 |
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±200 |
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RTP50 |
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≥5Ω～10Ω |
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±300 |
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±50 |
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≥10Ω～100KΩ |
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±100 |
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±200 |
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©2025 V1.0
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功率型 厚膜 无感 电阻器 Power type Thick film |
Non inductive Resistor |
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最大工作电压 Maximum operating voltage |
450VDC |
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耐电压 Voltage endurance |
1800VAC |
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绝缘电阻 Insulation resistance |
10GΩ min |
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工作温度范围 Working temperature range |
- 55 ° C～+150 ° C |
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产品类型 |
功率 |
阻值 |
精度 |
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Product type |
Power |
Resistance |
Accuracy |
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RTP |
50 Watts |
3R9=3.9Ω |
D：±0.5% |
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10R=10Ω |
F：±1% |
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20K=20KΩ |
J：±5% |
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