深圳市广辉电子有限公司

78PR电位器,78PR20K-302E,BI长条电位器 旧年份的货，5个起购

78P技术参数

电器特性(ELECTRICAL)
标称阻值范围(Standard Resistance Range, Ohms)..................10 to 2Meg
标准电阻误差(Standard Resistance Tolerance)...................±10%(<100 Ohms = ±20%)
输入电压(Input Voltage, Maximum).........................300 Vdc or rms not to exceed power rating
滑动器电流（Slider Current, Maximum）.....................100mA or within rated power, whichever is less
额定功率(Power Rating, Watts)..................................1 at 70°C, derating to 0 at 125°C
零位阻值(End Resistance, Maximum).............................2 Ohms
表面实际电气机械行程(Actual Electrical Travel, Turns,Nominal)...........22
绝缘强度(Dielectric Strength).....................................500Vrms
绝缘电阻(InsulatiON Resistance, Minimum)...................1,000 Megohms
分辨率(Resolution).............................................本质上无限(Essentially infinite)
接触电阻变化(Contact Resistance Variation, Maximum)..........1% or 1 Ohms, whichever is greater

环境特性:(ENVIRONMENTAL)
Seal ..........................................................85°C Fluorinert (No Leaks)
电阻温度系数(Temperature Coefficient, Maximum) ...............±100ppm/°C
工作温度范围(Operating Temperature Range) .................–55°C to +125°C
热冲击(Thermal Shock ).....................................5 cycles, –55°C to +125°C (1% ΔRT, 1% ΔVR)
抗潮性(Moisture Resistance) ..............................Ten 24 hour cycles (1% ΔRT, IR 1，000 Megohms Min.)
冲击测量(Shock, 6ms Sawtooth) .............................100G’s (1% ΔRT, 1% ΔVR)
振动测量(Vibration) ....................................20G’s, 10 to 2,000 Hz (1% ΔRT, 1% ΔVR)
温度(High Temperature Exposure) ..................250 hours at 125°C (2% ΔRT, 2% ΔVR)
旋转寿命(Rotational Life) ............................200 cycles (3% ΔRT)
负荷寿命(Load Life at 0.5 Watts) ....................1,000 hours at 70°C (2% ΔRT)
承受焊接高温(Resistance to Solder Heat) .....................260°C for 10 sec. (1% ΔRT)

机械原理:(MECHANICAL)
机械制动(Mechanical Stop)................................实心密封形(Solid)
开动后扭转力（Torque, Starting Maximum).............50 oz.-in. (0.035 N-m)
名义重量(Weight, Nominal) .。。。。。。。。。。。。。  .09 oz. (2.6 grams)

尺寸:31.75*8.13