F20J10KE Ohmite, F20J10KE Datasheet

F20J10KE

Manufacturer Part Number

F20J10KE

Description

20W 10000 OHMS VIT 5%

Manufacturer

Ohmite

Series

250r

Datasheet

1.F30J15RE.pdf (1 pages)

Specifications of F20J10KE

Resistance

10 KOhms

Tolerance

5 %

Power Rating

20 Watts

Temperature Coefficient

+/- 260 PPM / C

Operating Temperature Range

+ 25 C to + 350 C

Dimensions

9.525 mm W x 50.8 mm L

Product

Power Resistors Wire Wound Vitreous Enamel

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

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When limited space is a con-

sideration, choose Ohmite’s

“thin” stackable 250 Type

resistors. These oval-shaped

ceramic-core resistors feature

a low profile to permit instal-

lation in spaces with height

restrictions. They are also

equipped with integral mount-

ing brackets so they can be

fastened to a chassis and

stacked in locations with lim-

ited surface area.

the mounting brackets add

a heat sinking benefit result-

ing in a smaller size per watt.

Durable 250 Type resistors are

fully welded and coated with

lead free vitreous enamel.

F E A T u r E S

• Small size-to-power ratio.

• Stackable

• Integral mounting bracket con-

• Low profile for use in equipment

Ohmite Mfg. Co.

Coating

Blank = Vitreous

ducts heat to mounting surface.

where space is limited.

See web-

core info

Series

Vitreous enamel:

25 = 250 Fixed

26 = 260 Adjustable

Silicone ceramic:

45 = 450 Fixed

46 = 460 Adjustable

1.5 –––1R5E

7.5 –––7R5E 

custom

site for

When properly fastened,

C = Centohm

S = Silicone

Part No.

Prefix 

Suffix

–––1R0E     

–––2R0E     

–––3R0E

–––4R0E

–––5R0E     

–––10RE  

–––15RE   

–––20RE 

–––25RE     

–––30RE 

–––40RE

� � � � � � � �

Series

o r d e r i n g i n f o

Wattage

See “Resistor Terminals for Tubular Cores”

� � � � � � � � � � � � � � �

Wattage &

Core Code

See “Core and

Terminal Selection”

1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com

Tolerance

F = 1%

H = 3%

J = 5%

K = 10%

Wattage

m a d e - t o - o r d e r p a r t S

  

RoHS Compliant

 

Ohms

1R0 = 1 Ω

250 = 250 Ω

1K0 = 1,000 Ω

25K = 25,000 Ω

25K5 = 25,500 Ω



Terminal Type

Mounting Brackets

(user supplies bracket for core TB)

B = Stacking box

S = Stacking stud, std. height

H = Stacking stud high

U = Unit type

1,000

1,250

• All-welded construction.

• RoHS compliant product avail-

S P E c i F i c A T i O N S

Material

Coating: Lead free vitreous

Core: Ceramic.

Terminals: Tinned lug with hole.

Derating: Linearly from 100% @

Electrical

Tolerance: ±5% (J)

Power rating: Based on mount-

Overload: 10x rated wattage for

Temperature coefficient:

100

150

200

250

300

400

500

750

800

able. Add “E” suffix to part num-

ber to specify.

enamel.

RoHS solder composition is 96%

Sn, 3.5% Ag, 0.5% Cu

+25°C to 0% @ +350°C.

ing a single resistor on a metal

surface measuring 10” (254mm)

square by 0.04” (1.016mm)

thick. Reduce rating by 15%

when mounting on non-metallic

surface.

5 seconds if max. voltage is not

exceeded.

–––50RE 

–––75RE

–––100E

–––150E

–––200E

–––250E

–––300E

–––400E

–––500E

–––750E

–––800E

–––1K0E     

–––1K25E  

Part No.

Prefix 

Suffix

S t a n d a r d p a r t n u m b e r S f o r 2 5 0 S e r i e S

1 to 20Ω: ±400 ppm/°C.

Over 20Ω: ±260 ppm/°C

Dielectric withstanding

voltage: 500 VAC: 10 and

20 watt rating. 1000 VAC:

30, 40 and 55 watt rat-

ing (measured from lug to

mounting bracket)

To calculate max. amps:

use the formula √P/R

    



    

Tolerance

J = 5%



   



Wattage

Ohms

Example:

1R00 = 1 Ω

250R = 250 Ω

1K00 = 1,000 Ω

25K0 = 25,000 Ω

25K5 = 25,500 Ω

  



  

 

RoHS

Compliant

 



10,000

15,000

20,000

25,000

40,000

Note:

and improve power dissipation.

1,500

2,000

2,500

3,000

4,000

5,000

6,000

7,500

*Reference dimension only; varies according to resistance value.

Series Wattage Ohms

4.979 mm

3.175 mm

Adjustable versions available. Consult Ohmite.

Other sizes available. Consult Ohmite.

Also available in low cost Centohm or Silicone coating. Consult Ohmite.

* Maximum Voltage is based on Ohm’s Law [V=√P*R] as limited by the resistance

value of specified product

6.350 mm

3.175 mm

2.776 mm

6.350 mm

F10

F20

F30

F40

F55

0.110":

0.196"

0.125"

3.175 mm

0.250"

0.125"

0.794 mm

Diam.

0.250"

Diam.

When resistors are stacked, use washers or spacers as required to insure clearance

–––1K5E   

–––2K0E

–––2K5E     

–––3K0E 

–––4K0E

–––5K0E

–––6K0E

–––7K5E

–––10KE

–––15KE

–––20KE

–––25KE

–––40KE

Part No.

Prefix 

Suffix

0.031"

0.125"

1.0-15K

1.0-50K

1.0-10K

1.0-25K

1.0-30K



Wattage

30W, 40W & 55W

  



10W & 20W

Diam.

0.063"

1.588 mm

Diam.

0.109"

2.776 mm

 



0.750 / 19.050

2.000 / 50.800

1.250 / 31.750

2.000 / 50.800

3.500 / 88.900



Length L

3.175 mm

4.763 mm

Dimensions (in. /mm)

0.125"

0.188"

Vitreous Enamel Power

 = Standard values; check availability

250 Series

using the worldwide inventory

search at www.ohmite.com

0.375"

9.525 mm

0.438"

11.113 mm

1.000 / 25.400

2.313 / 58.750

2.000 / 50.800

2.750 / 69.850

4.250 / 107.950

‘Thin’ Stackohm

Length A

0.625"

15.875 mm

0.125" *

3.175 mm

0.250" *

6.350 mm

Voltage*

Max.

1405

187

815

281

655

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