ASJ PTE LTD

14

CF

Carbon Film Resistors

INTRODUCTION

The  Carbon  Film  Resistors  are  highly  reliable.  These  resistors  are  pyrolytically  deposited  and

manufactured in streamlined automated assembly facilities under strict quality control procedures.

The stable performance is achieved with the technology of film deposition onto a ceramic core with

excellent thermal conductivity, mechanical strength and good electrical properties. Together with

multi layers of epoxy coatings, the Carbon Film Resistors offer stability with long term reliability.

FEATURES

• Small size with high power ratings.

• Excellent long term stability.

• Wide Resistance Range.

•  Lead Free

DIMENSIONS

Type

        DIMENSIONS

L

C

D

l

d

CF1/6 / CF1/4SS

3.00

±

0.4

3.5 Max

1.70

±

0.2

28.0

±

3.0

0.45

±

0.05

CF1/4 / CF1/2SS

6.35

±

0.5

7.1 Max

2.30

±

0.3

28.0

±

3.0

0.60

±

0.05

CF1/2

9.00

±

0.5

11.8 Max

3.20

±

0.5

28.0

±

3.0

0.60

±

0.05

CF 1

12.00

±

1.0

15.0 Max

4.50

±

0.5

35.0

±

3.0

0.80

±

0.05

CF 2

16.00

±

1.0

22.0 Max

5.00

±

0.5

35.0

±

3.0

0.80

±

0.05

(Millimeters)

ød

øD

l

L

C

RATINGS

Type

   CF 1/6          CF 1/4         CF1/4SS         CF 1/2         CF1/2SS          CF 1            CF 2

Power Rating @ 70ºC

    1/6W           1/4W             1/4W          1/2W

  1/2W             1W             2W

Operating Temp. Range

-55ºC to +155ºC

Derated to 0 Load at

       +155ºC

Maximum Working Voltage

    200V            250V             250V           350V

  350V            500V           500V

Maximum Overload Voltage

    400V            500V             500V           700V

  700V            700V          1000V

Resistance Range

2%, E-24

10

Ω

-1M

Ω

    10

Ω

-1M

Ω

     10

Ω

-1M

Ω

    10

Ω

-1M

Ω

     10

Ω

-1M

Ω

    10

Ω

-1M

Ω

   10

Ω

-1M

Ω

5%, E-24

1

Ω

-22M

Ω

    1

Ω

-22M

Ω

     1

Ω

-22M

Ω

    1

Ω

-22M

Ω

     1

Ω

-22M

Ω

    1

Ω

-22M

Ω

   1

Ω

-22M

Ω

15

ASJ PTE LTD

15

CF

Carbon Film Resistors

155ºC

DERATING CURVE

100

80

60

40

20

0

-60

-40

-20

0

20

40

60

80

100

120

140

160

180

200

-55ºC

70ºC

Ambient Temperature (ºC)

R

ated P

ower (%)

ORDERING CODE

CF  XXXXX 

-

 XXX  X 

-

 X  X

  

Resistor

 Size

    Nominal Resistance

Resistance

Packaging

Quantity

Tolerance

  Carbon

1/6

3-

E24 Series

G=

±

2%

A=Ammo (52MM)

1 = 1000 pcs

    Film

1/4SS

Resistors Digit

2.2

Ω

=2R2

J=

±

5%

S=Spool (52MM)

2 = 2000 pcs

1/4

100

Ω

=101

M=Ammo (26MM)

3 = 3000 pcs

1/2SS

R=Spool (26MM)

5 = 5000 pcs

1/2

N=Ammo (73MM)

1

Q=Spool (73MM)

2

PERFORMANCE CHARACTERISTICS

Performance Test

Test Method

Specification

DC Resistance

MIL-STD-202F, Method 303

±

2%, 

±

5% Tolerance

Resistance Temperature Coefficient

MIL-STD-202F, Method 304

0.15

≤

100

Ω

±

300ppm/ºC

>100

Ω≤

1K

Ω

-450 to +0ppm/ºC

>1K

Ω≤

100K

Ω

-750 to +0ppm/ºC

>100K

Ω≤

1M

Ω

-1000 to +0ppm/ºC

>1M

Ω≤

5.1M

Ω

-1750 to +350ppm/ºC

R>5.1M

Ω

-2200 to 350ppm/ºC

Short Time Overload

MIL-R-55342E, Sect. 4.7.5

±

(0.3% + 0.05

Ω

)

Dielectric Withstanding Voltage

MIL-STD-202F, Method 301

±

(0.5% + 0.05

Ω

) No Mechanical Damage

Insulation Resistance

MIL-STD-202F, Method 302

>10

3

M

Ω

Current Noise

MIL-STD-202F, Method 308

1K

<0.1

µ

 v/v

>1K-10K

<0.2

µ

 v/v

>10K-100K

<0.3

µ

 v/v

>100K-910K

<0.6

µ

 v/v

>1M-2.2M

<2

µ

 v/v

>2.2M-5.1M

<3

µ

 v/v

>5.1M-10M

<20

µ

 v/v

Solderability

MIL-STD-202F, Method 208

>95% coverage

Resistance to Soldering Heat

MIL-R-55342E, Sect. 4.7.7

±

(0.5% + 0.05

Ω

)

Robustness of electrode 

(Terminal Strength)

MIL-STD-202F, Method 211

±

(0.5% + 0.05

Ω

) No Mechanical Damage

Resistance to Solvents

MIL-STD-202F, Method 215

No Damage to lacquer & colour coding

Moisture Resistance

MIL-STD-202F, Method 106

±

(1.5% + 0.05

Ω

)

Temperature Cycling

MIL-STD-883F, Method 1010.7

±

(1.0% + 0.05

Ω

)

Low Temperature Operation

MIL-R-55342E, Sect. 4.7.4

±

(0.5% + 0.05

Ω

)

High Temperature Exposure

MIL-R-55342E, Sect. 4.7.6

±

(1.0% + 0.05

Ω

)

Thermal Shock

MIL-STD-202F, Method 107

±

(1.0% + 0.05

Ω

)

Loadllife

<100K

Ω

MIL-STD-202F, Method 108

±

(2.0% + 0.05

Ω

)

≥

100K

Ω

MIL-STD-202F, Method 108

±

(3.0% + 0.05

Ω

)