METAL OXIDE FILM FIXED RESISTORS (MO ; RSF ; RSN ; RSS)

 
Features
 
  • Formed by a Sn-Sb base metal oxide smoked onto highly Al2O3 concentrated ceramic rods.

  • Excellent heat resistance due to its special non-flammable coating.

  • Will not ignite during overload.

  • Able to make large watts.

”@
 
Characteristic Performance
 

Item

Performance

Operating Temp. Range -55¢J ~ +155¢J
Temperature Coefficient

”Õ470K£[”G±350PPM/¢J
”Ł470K£[”G±1300PPM/¢J

Short Time Overload

Normal”Gwithin ±(1%+0.05£[) ; Small”Gwithin ±(2%+0.1£[)
No evidence of mechanical damage.

Insulation Resistance

103M£[ or more

Dielectric Withstanding Voltage

No evidence of flashover mechanical damage, arcing or insulation breakdown.

Pulse Overload

MO normal”Gwithin ±(2%+0.1£[) ; MO small”Gwithin ±(5%+0.1£[)

Terminal Strength

No evidence of mechanical damage.

Resistance to Soldering Heat

Within ±(1%+0.05£[), no evidence of mechanical damage.

Solderability

Covered with new solder by 95% at least.

Resistance to Solvent

No deterioration of protective coating and markings.

Temperature Cycle

Within ±(1%+0.05£[), no evidence of mechanical damage.

Load Life in Humidity

Within ±(5%+0.1£[)

Load Life

Within ±(5%+0.1£[)

Flammability

No evidence of flame.

 
Derating Curve
 

 
Structure & Materials
 

 

No.

Item Material

1

Lead Wire

Soldered or tinned annealed copper wire.

2

Connection

The lead wire, which is plated with solder, shall be mounted to the caps by welding process.

3

Terminal

Tinned iron cap.

4

Ceramic Core

High alumina ceramic is used.

5

Resistance Element

The resistor element consists of heat resistant wire of nickel alloy.

6

Insulation Coating

The resistor element shall consist of metal oxide film, but use metal film when the resistance is less than 2.2£[ and use carbon film when it is over standard resistance range.

7

Indication

Color code.

 
Dimensions
 

 
Style Dimensions (mm) Max.
Working V.
Max.
Overload V.
Resistance Range
L D d H
MO 1/4W 6.50 ± 0.50 2.30 ± 0.30 0.50 ± 0.05 28.00 ± 3.00 200V 350V 10 ~ 22K£[
MO 1/2WS 6.50 ± 0.50 2.30 ± 0.30 0.50 ± 0.05 28.00 ± 3.00 250V 400V 10 ~ 22K£[
MO 1/2W 9.00 ± 1.00 3.20 ± 0.50 0.60 ± 0.10 28.00 ± 3.00 250V 400V 10 ~ 75K£[
MO 1WS 9.00 ± 1.00 3.20 ± 0.50 0.60 ± 0.10 28.00 ± 3.00 350V 600V 10 ~ 68K£[
MO 1W 12.00 ± 1.00 4.50 ± 0.50 0.65 ± 0.10 32.00 ± 3.00 350V 600V 10 ~ 100K£[
MO 2WS 12.00 ± 1.00 4.50 ± 0.50 0.65 ± 0.10 32.00 ± 3.00 350V 600V 10 ~ 68K£[
MO 2W 15.50 ± 1.00 5.00 ± 1.00 0.70 ± 0.10 35.00 ± 3.00 350V 600V 10 ~ 120K£[
MO 3WS 15.50 ± 1.00 5.00 ± 1.00 0.70 ± 0.10 35.00 ± 3.00 350V 600V 10 ~ 100K£[
MO 3W 17.50 ± 1.00 6.50 ± 1.00 0.70 ± 0.10 35.00 ± 3.00 500V 800V 10 ~ 150K£[
MO 5WS 17.50 ± 1.00 6.50 ± 1.00 0.70 ± 0.10 35.00 ± 3.00 500V 800V 10 ~ 100K£[
MO 5W 24.50 ± 1.00 9.00 ± 1.00 0.70 ± 0.10 32.00 ± 3.00 750V 1000V 10 ~ 180K£[

Note: Special resistance range min. 0.1£[, max. 10M£[ (±1%, min. 0.22£[, max. 220K£[), but character is not guaranteed.

  
How to Order

  

Ex.: MO1/2W-T52-10KRJ

  

MO 1/2W

”V

T52

”V

10KR J
   
Product Style (Type) Rated Power (Watts)   Form Type   Resistance Value Resistance Tolerance

  Normal

Samll

MO

RSF

RSS

RSN

  

 

  

 

  

 

  

 

Normal

Small

1/8W

1/4WS

1/4W

1/2WS

1/2W

1WS

1W

2WS

2W

3WS

3W

5WS

5W

 

 

B :

 Bulk

Txx :

 Taping XXmm

PU :

 Horizontal

PF :

 Vertical

  

 

  

 

  

 

  

 

 

(R = £[)

E-12 Series

E-24 Series

E-48 Series

E-96 Series

  

  

  

K :

  ±10%

J :

  ±5%

G :

  ±2%

F :

  ±1%

  (Special)

  

  

  

 

 


[ BACK ] [ RESISTOR COLOR CODE ] [ RESISTOR FORMING TYPE & DIMENSIONS ]
”@

 
 

Copyright (c) 2016~2026 Queen Mao Electronic Co., Ltd.. All rights reserved.
service@queenmao.com.tw