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Metal Film Resistor

Features

  • Selected superior quality material.
  • Automated mass scale production.
  • Superior electrical performance.
  • Flame proof epoxy coating.
  • Color band marking for easy identification.
  • Packed to customer requirement.
  • Low prices, faster deliveries.
  • RoHS complient part, lead free.

Applications

  • High voltage power supplies.
  • Television sets.
  • High frequency inverters, UPS etc.
  • Measuring instruments.
  • Capacitor discharge application.

Diagram

Derating Curve

The value of the rated voltage shall satisfy at the ambient temperature 70 °C and below. When the ambient temperature is higher than 70 °C, the load power shall be reduce according to the derating curve as shown below.

Electrical Specifications

Item Standard Test Method
Resistance Value ± 1 % JIS C 5202, 5.1
Resistance Temp.
Characteristics
(ppm/°C)
* MAX TC
10 Ω and below ± 200 ppm / °C
above 10Ω ± 50 ppm / ° C
JIS C 5202, 5.2
100 ° C + Room
Load Life In Humidity ( Damp Heat ) Temp. 40±2°C, 90~95% RH
*R MAX ± (5%+0.05Ω)
1.5 hrs ON / 0.5 hr. OFF (1000hrs )
JIS C5202 7.9
Load Life In Temperature (Endurance) Temp. 70 °C
* R MAX ± (5%+0.05Ω)
1.5 hrs ON / 0.5 hr. OFF (1000hrs )
JIS C5202 7.10
Short Time Overload ± (0.5 % + 0.05 Ω ) JIS C 5202, 5.5
root( PR * 2.5 (5 sec.) )
Solder Heat Resistance ± (0.5 % + 0.05 Ω ) JIS C 5202, 6.4
350 °C ± 10 °C 3 sec
Temp. Cycling Resistance ± (0.5 % + 0.05 Ω )
( 5 cycles )
JIS C 5202, 7.4
-55 °C / +155 °C
Dielectric Withstanding Voltage ± (0.5 % +0.05 Ω)
V – Block 60 sec.
JIS C 5202, 5.7
Solder ability  Covered with new solder by 95 % (240°C for 5 sec.) JIS C 5202, 6.5
INSULATION                                  

10000 MW  or more

V – Block , 60 sec.

JIS C5202, 5.6
Vibration Resistance                   ± (0.5 % +0.05 W) Low frequency vibration 2 hrs. In each of 3 direction JIS C-5202, 6.3              Type -A                        
HEAT RESISTANCE             ± ( 3% + 0.05 W ) 1000 hrs in the thermostatic bath       At 155°C      
COLD RESISTANCE ± ( 3% +  0.05 W ) 1000 hrs in low temperature bath At   -55°C
MOISTURE RESISTANCE (Damp Heat)   ± ( 3% + 0.05 W ) 1000 hrs in 90 ~95% thermo- Humidistat bath at40°C without load
Drop Test

Drop the resistor from 1 Meter height to a wooden board ( 3 cm thick )
10 times.

  •                                           1.)   Resistance change should be ±  (0.5 % + 0.05 W) or less.
  •  
  • There should be no defect such as cracks, scratches, etc. ( except

                         for lead wire  bending )           

 

Color Code Marking

   The nominal resistance value and allowable tolerance of resistance shall be indicated by
colors. The indication method is shown in Table 4.                                                                                                 
  Table  4 : Color Band Indication (± 1%)