供应尚誉电子精密电阻

主要技术指标 MAIN SPECIFICATION

型号

Type 工作电压 WORKING 负荷电压 MAX OVERLOAD 额定功率RatedPowerat70℃ 电阻范围RESISTANCE VALUE RANGE MF 1/6W / 1/8W. 200V 400V 1/6W 0.1Ω－10MΩ MF1/4W / I/4WS 250V 500V 1/4W 0.1Ω－10MΩ MF1/2W / 1/2WS 350V 700V 1/2W 0.1Ω－10MΩ MF1W / 1WS 500V 1000V 1W 0.1Ω－10MΩ MF2W / 2WS 500V 1000V 2W 0.1Ω－10MΩ MF3W / 3WS 500V 1000V 3W 0.1Ω－10MΩ MF5W/ 5WS 500V 1000V 5W 0.1Ω－10MΩ 1.额定功率POWER RATING 额定功率的定义为在环境温度70℃输出功率。当环境温度超过70℃。 Power rating is defined as maximum power rating continuously applied under ambient temperature at 70℃.when the ambient temperature exceeds 70℃。 额定电压为交流或直流电压（频率为50Hz或60Hz）额定电压计算方式为： Rated voltage is defined as the DC or AC (effective Value at commercial frequency example 50 C/S,60 C/S)，Voltage when rated power is applied and can be calculated By the following： V = √ P×R V = RATED VOLTAGE P = RATED POWER (WATTS) R = NOMINAL RESISTANCE VALUE (OHM) When the calculated rated voltage exceeds the Maximum usable voltage flue shown in CHART,the Maximum usable voltage is defined as the voltage According to the power-decreasing curve shown in CHART. 3.产品性能 PERFORMANCE 项目 ITEM 性能及验收标准

PERFORMANCE AND QUALIITY ACCEPTANCE 测试方法

TEST METHOD

温度系数

Resistance to temperature

coefficient

1. 10Ω＜Rx ＜ 100KΩ PPM/℃ ＜ 50PPM 2. Rx＜10Ω PPM/℃ ＞ 50PPM

3. 100KΩ＞ Rx ＜10MΩ

PPM/℃ ＜ 100PPM/℃

R – RO 106

PPM/℃ = *

RO T- T0

R = Measured resistance（Ω）at T T ℃ 电阻实测值（Ω） Ro = Measured resistance （Ω）at To To ℃ 电阻实测值（Ω）

T = Measured test temperature(℃)

测试温度的实测值 To = Measured base temperature( ℃) 基准温度的实测值

短时负荷

Short time overload

±(0.5%R + 0.05ohm)

Shall be no mechanical breakage

无破损（外观正常）

2.5倍额定电压（交流或直流），5秒。

AC or DC voltage 2.5times the rated

Voltage for 5 seconds .

耐电压

Voltage endurance

No breakdown or flashover

无击穿或飞弧

将电阻放于“V”形槽内，加1.42倍额定电压，保持一分钟.

Lay the resistor on the 90° angle metal “V” peak is 1.42 times as much as insulate voltage .

端子强度

Terminal strength

内外部无损伤

Shall be no mechanical breakage

施加3.5KG 30S的拉力

Pull test apply 3.5KG force to the lead in the direction of lead axis for 30±5 seconds.

耐焊性

Heat resistively

against soldering

±(0.5%R + 0.05ohm)

Shall be no mechanical breakage

无破损（外观正常）

将电阻引出端浸入350℃ ± 10℃的锡中，深度离电阻体3±0.05mm，时间3.5±0.5秒。放置一小时再测试。

Dip the lead in to a solder bath having a temperature of350℃ ± 10℃up to 3±0.05mm from the body of the resistor and hold it for 3.5±0.5seconds leave the resistor ,at room temperature 1 hours after ,then Measure. 项目 ITEM 性能及验收标准

PERFORMANCE AND QUALIITY ACCEPTANCE 测试方法

TEST METHOD

寿命试验

Load life test

±(1%R + 0.5ohm)

Shall be no mechanical breakage

无破损（外观正常）

在70℃的环境中施加额定电压，1小时通，0.5小时断1000小时。

In the constant temperature chamber 70℃ ,apply rated voltage for 1 hour and shut voltage for 0.5 hour and repeat this cycle for 1000 hours,

上锡效果

Solder ability

≥95%

浸入260℃±5℃的锡槽中，

时间5± 0.5秒。

Dip the lead in to a solder bath having a temperature of 260℃±5℃.

Time:5± 0.5seconds。

湿度负荷试验

Humidity load test

≤± (2% R+ 0.1ohm)

Shall be no mechanical breakage

无破损（外观正常）

温度在40℃± 2℃，相对湿度90 - 95％室内，用额定电压1.5小时开和关闭电压0.5小时，重复这个周期1000小时，离开1小时后在室温下测试。

In temperature chamber 40℃±2℃，relative humidity 90 – 95%,Apply rated voltage 1.5hour and shut voltage 0.5 hour repeat this cycle for 1000 hours, leave in room temperature for 1 hour after test,

耐振性

Vibration

Shall be no mechanical breakage

无破损（外观正常）

设置振动频率在10HZ - 55HZ 10HZ/秒 1.5mm的幅度,在1分钟更换频率的。振动三个方向，在3小时内完成。

set a resistor at the vibration table and vibrate 10HZ—55HZ 10HZ/s. with 1.5mm amplitude in 1 min. when the change of frequency shall be completed uniformly. the vibration shall apply to 3 directions,vertical and horizontal to the axis of resistor each for 3h.

上限类别温度耐久性

Endurance at upper-limit temperature

≤±(2%R+0.1Ω)

在125℃温度下，持续时间1000H

At 125 ℃ temperature, duration of 1000h 中山市尚誉电子有限公司供应高品质精密电阻,质量稳定,性价比高,欢迎新老客咨询洽谈,