FUSIBLE METAL FILM RESISTORS (FRN)
 
Features
 
  • Flame proof painting.

  • Low temperature coefficient.

  • Uniform in fusing time.

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Characteristic Performance
  

Item

Performance

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

Within ±200PPM/J

Short Time Overload

Within ±(2%+0.05[), 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

Within ±(1%+0.05[)

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%+0.05[)

Load Life

Within ±(5%+0.05[)

Flammability

No evidence of flame.

Fusing Characteristic

Resistance Range

Magnification of Power Rating

Fusing Time
(Maximum Time)

Nonmal

Small Size

Under 0.22[

Rated Power X 40

Rated Power X 16

Fusing Time is within 60 seconds.

0.22[ ~ 1[

Rated Power X 32

1.1[ ~ 2[

Rated Power X 25

2.1[ ~ 10[

Rated Power X 16

10.1[ ~ 10K[

Rated Power X 12

Over 10K[

  

  
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 consist of metal film.

6

Insulation Coating

Silicone resin is used. Accord with UL94 V-0 nonflammable specification.

7

Indication

Color code.

  
Dimensions
  

 
Style Power Rating Dimensions (mm) Dielectric Withstanding Voltage Maximum Open Circuit Voltage Resistance Range
L D d H
FRN 1/4W 0.25W 6.50 ± 0.50 2.30 ± 0.30 0.50 ± 0.50 28.00 ± 3.00 300V 200V

0.1[ ~ 10K[

FRN 1/2WS 0.5W 6.50 ± 0.50 2.30 ± 0.30 0.50 ± 0.50 28.00 ± 3.00 300V 200V

0.1[ ~ 10K[

FRN 1/2W 0.5W 9.00 ± 1.00 3.20 ± 0.50 0.60 ± 0.10 28.00 ± 3.00 500V 250V

0.1[ ~ 10K[

FRN 1WS 1W 9.00 ± 1.00 3.20 ± 0.50 0.60 ± 0.10 28.00 ± 3.00 500V 250V

0.1[ ~ 10K[

FRN 1W 1W 12.00 ± 1.00 4.50 ± 0.50 0.65 ± 0.10 32.00 ± 3.00 500V 250V

0.1[ ~ 10K[

FRN 2WS 2W 12.00 ± 1.00 4.50 ± 0.50 0.65 ± 0.10 32.00 ± 3.00 500V 250V

0.1[ ~ 10K[

FRN 2W 2W 15.50 ± 1.00 5.00 ± 0.50 0.70 ± 0.10 35.00 ± 3.00 500V 250V

0.1[ ~ 10K[

FRN 3WS 3W 15.50 ± 1.00 5.00 ± 0.50 0.70 ± 0.10 35.00 ± 3.00 500V 250V

0.1[ ~ 10K[

 
How to Order
 

Ex.: FRN1/2W-T52-10RJ

 
FRN 1/2W

V

T52

V

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

FRN

  

 

  

 

  

 

  

 

Normal

Small

1/4W

1/2WS

1/2W

1WS

1W

2WS

2W

3WS

 

B :

 Bulk

Txx :

 Taping XXmm

M :

 M-Form

  

 

  

 

 

(R = [)

E-12 Series

E-24 Series

  

  

K :

  ±10%

J :

  ±5%

  

  

  

 

 


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