美隆電子有限公司

Mayloon Electronic Company Limited

  • Increase font size
  • Default font size
  • Decrease font size
Home

Ultra Metal Film Resistor

E-mail 列印

Resistor 超小型金屬膜電阻

PDF File  Data Spec Ultra Miniature Metal Film Resistor - UMR Series

Resistor INTRODUCTION
The UMR Series flame-proof type miniature Metal Film Resistors are manufactured by vacuum depose it metal film on
high thermal conductivity and specific gravity Rosenthal ceramic or same grade Japans rods. The both ends of
ceramic are coated with precision mixed metals which help to prevent against noise, and to provide low TCR
and low Tol precision resistors the can meet MIL and JIS requirement.
Utilizing a 95~98% of AI ceramic cores and combined a special cutting technology inside, this resulting superior
resistors give excellent heat dissipation, stable performance and significantly up-grade the power rating.
This specially designed resistors are widely used by the industries of communication devices, meters,
high-class, audio equipments and precision military defending facilities as well.
Resistor EXTERNAL DIMENSIONS SINLOON®
STYLE DIMENSION (mm)
L ΦD H Φd
UMR-01 3.3±0.4 1.8±0.3 28±2 0.5±0.05
UMR-02 6.3±0.5 2.3±0.3 28±2 0.6±0.05
UMR-03 6.3±0.5 2.3±0.3 28±2 0.6±0.05
UMR-10 6.3±0.5 2.3±0.3 28±2 0.6±0.05
UMR-20 9.0±0.5 3.2±0.5 26±2 0.6±0.05
UMR-30 15.5±1.0 5.0±0.5 32±2 0.6±0.05
The type designation shall be in the following form and as specified.
Resistor RATED POWER
Type Power Maximum Voltage Dielectric withstanding Resistance
Working Overload Voltage (AC) Range
UMR-01 0.4W 200V 400V 300V 1R~10MΩ
UMR-02 0.5W 250V 500V 500V 1R~10MΩ
UMR-03 0.6W 250V 500V 500V 1R~10MΩ
UMR-10 1W 250V 500V 500V 1R~10MΩ
UMR-20 1.8W 350V 700V 700V 1R~10MΩ
UMR-30 3W 500V 1KV 1KV 1R~10MΩ
Temp. Coefficient (by Type) ±50ppm, ±100ppm
Resistor FEATURES
Resistance Tolerance: ±1%, ±2%, ±5%.
Excellent long-term stability.
High power-to-size ratio for significant space saving.
Variety of packing: bulk, strip pack, 26mm and 52mm tape and reel, cut and foramen.

 

 
No images
歡迎您瀏覽本網站 WELCOME TO MAYLOON
Mayloon Electronic Company Limited Mayloon Lighting Company Limited

Connection


Who's Online

現在有 442 訪客 在線上

Mayloon on-line chat now

即時業務接洽
WhatsApp:91808452
QQ:1247069489
E-mail: peter@mayloon.com
TEL:852-2408 9788 M: 9180 8452

Newsflash

電阻器的主要特性

按圖放大   電阻器的主要特性

 RS 電阻器的主要特性:

控制某一部份電路的電壓和電流比例。如果該段電路的電壓是固定的,電阻器能製造固定電流;如該段電路的電流是固定的,則電阻器能製造固定的電壓。電子工程師會因應不同的要求,選擇不同功率和阻抗值達到電路電性的要求。

分配電路不同有不同的電壓比例。限制流經某一段電路的電流。外型不同釋放熱能的功效亦不同。發熱線便是根據電阻器的這個特性而產生出來的。本公司所生產的電力型功率電阻所能承受的電壓及電流要比一般電阻都大,能做到的最大功率是3KW,相應的體積就會越大。成形如上圖所示。

在一個理想的電阻器裏,電阻值不會隨電壓或電流而改變,亦不會因電流的突然變動而改變。在現今優質材料及高技術的支援下,改變制程工藝及內部設計使電阻器在極端的電壓或電流,以至在環境溫度變化下能表現出比較理想的電阻。

每一個電阻器均有其承受的電壓或電流的上限(主要取決於電阻器的體積)。如果電壓或電流超出了這個範圍,首先電阻器的電阻值會改變(在一些電阻器中可以有劇烈的變動),繼而令電阻器因過熱等情況而損毀。大部份電阻器會標示額定的電功率,另外一些則會提供額定的電流或電壓。電阻器本身除電阻外,亦擁有微量的電感或電容,使其表現與理想的電阻器有所差異。