METAL FILM FIXED RESISTORS (MF ; RN ; SN)
 
Features
 
  • Formed by spattering Ni-Cr alloy onto highly Al2O3 concentrated ceramic rods.

  • Makes an excellent precise resistor due to its low temperature coefficient.

  • Long term reliability and moisture proof resin for protective coating.

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Characteristic Performance
 

Item

Performance

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

10[G±100PPM/J
10[G±200PPM/J

Short Time Overload

Within ±(0.5%+0.05[), no evidence of mechanical damage.

Insulation Resistance

104M[ or more

Dielectric Withstanding Voltage

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

Pulse Overload

Within ±(0.5%+0.05[)

Terminal Strength

No evidence of mechanical damage.

Resistance to Soldering Heat

Within ±(0.5%+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 ±(1%+0.05[)

Load Life

Within ±(2%+0.05[)

 
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 shall consists of metal film.

6

Insulation Coating

Epoxy resin is used.

7

Indication

Color code.

Dimensions
 

 
Style Dimensions (mm) Max.
Working V.
Max.
Overload V.
Resistance Range
L D d H

MF 1/8W (1/6W)

3.20 ± 0.20 1.80 ± 0.20 0.40 ± 0.05

28.00 ± 3.00

200V 400V

10[ ~ 1M[

MF 1/4WS

3.20 ± 0.20 1.80 ± 0.20 0.40 ± 0.05

28.00 ± 3.00

200V 400V

10[ ~ 1M[

MF 1/4W

6.50 ± 0.50 2.30 ± 0.30 0.50 ± 0.05

28.00 ± 3.00

250V 500V

10[ ~ 2M[

MF 1/2WS

6.50 ± 0.50 2.30 ± 0.30 0.50 ± 0.05

28.00 ± 3.00

250V 500V

10[ ~ 2M[

MF 1/2W

9.00 ± 1.00 3.20 ± 0.50 0.60 ± 0.10

28.00 ± 3.00

350V 700V

10[ ~ 2M[

MF 1WS

9.00 ± 1.00 3.20 ± 0.50 0.60 ± 0.10

28.00 ± 3.00

350V 700V

10[ ~ 2M[

MF 1W

12.00 ± 1.00 4.50 ± 0.50 0.65 ± 0.10

32.00 ± 3.00

500V 1000V

10[ ~ 2M[

MF 2WS

12.00 ± 1.00 4.50 ± 0.50 0.65 ± 0.10

32.00 ± 3.00

500V 1000V

10[ ~ 2M[

MF 2W

15.50 ± 1.00 5.00 ± 1.00 0.70 ± 0.10

35.00 ± 3.00

500V 1000V

10[ ~ 2M[

MF 3WS

15.50 ± 1.00 5.00 ± 1.00 0.70 ± 0.10

35.00 ± 3.00

500V 1000V

10[ ~ 2M[

MF 3W

17.50 ± 1.00 6.50 ± 1.00 0.70 ± 0.10

35.00 ± 3.00

500V 1000V

10[ ~ 2M[

Note: Special resistance range min. 0.1[, max. 5.1M[, expect the resistance value is less than 0.22[ and tolerance is ≤1% , but character is not guaranteed.

 
How to Order
 

Ex.: MF1/4W-T52-10KRF

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MF 1/4W

V

T52

V

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

MF

or

RN

or

SN

  

 

  

 

Normal

Small

1/8W

1/4WS

1/4W

1/2WS

1/2W

1WS

1W

2WS

2W

3WS

3W

  

 

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%

D :

  ±0.5%

C :

  ±0.25%

B :

  ±0.1%

 

 


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