67WR灰色多圈预调电位器 67WR20KLF BI多圈电位器电阻B20K

67系列电位器技术参数
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%)
Zui大输入电压(input voltage, maximum)..........................200 vdc or rms not to exceed power rating
Zui大滑动器电流（slider current, maximum）.....................100ma or within rated power, whichever is less
额定功率(power rating, watts).................................0.5 at 85°c, derating to 0 at 125°c
Zui大零位阻值(end resistance, maximum)..........................2 ohms
表面实际电气机械行程(actual electrical travel, nominal)...........20
绝缘强度(dielectric strength).................................900vrms
Zui小绝缘电阻(insulation resistance, minimum)....................1,000 megohms
分辨率(resolution)...............................................本质上无限(essentially infinite)
Zui大接触电阻变化(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(<100 ohms = ±250ppm/°c)
工作温度范围(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)
Zui高温度(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)..............................clutch action, both ends
开动后Zui大扭转力（torque, starting maximum).............5 oz.-in. (0.035 n-m)
名义重量(weight, nominal) 。。。。。。。。。。。。。  .04 oz. (1.13 grams)

尺寸:3/8"(9.53mm)

本产品的加工定制是是，品牌是BI，型号是67WR20KLF，种类是多圈，用途是微调，材料是玻璃釉膜，性能是微调，阻值调节方式是旋转式，阻值变化方式是D式（指数式），标称阻值是20k欧，额定功率是0.25（W），阻值允许偏差是±10（%），滑动噪声是0（V），分辨率是100（%），零位电阻是1（Ω），接触电阻是1（Ω），绝缘电阻是1（MΩ），符合度是100，温度系数是±100ppm/°C