F20J1K5E [OHMITE]

Fixed Resistor, Wire Wound, 20W, 1500ohm, 815V, 5% +/-Tol, 260ppm/Cel, Chassis Mount, ROHS COMPLIANT;


型号：	F20J1K5E
厂家：	OHMITE MFG. CO.
描述：	Fixed Resistor, Wire Wound, 20W, 1500ohm, 815V, 5% +/-Tol, 260ppm/Cel, Chassis Mount, ROHS COMPLIANT 电阻器
文件：	总3页 (文件大小：278K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

250 Series

‘Thin’ Stackohm®

Vitreous Enamel Power

F ꢁ at u ꢀ ꢁ S

Whenꢀlimitedꢀspaceꢀisꢀaꢀconsideration,ꢀchooseꢀ

Ohmite’sꢀ“thin”ꢀstackableꢀ250ꢀTypeꢀresistors.ꢀTheseꢀ

oval-shapedꢀceramic-coreꢀresistorsꢀfeatureꢀaꢀlowꢀ

profileꢀtoꢀpermitꢀinstallationꢀinꢀspacesꢀwithꢀheightꢀ

restrictions.ꢀTheyꢀareꢀalsoꢀequippedꢀwithꢀintegralꢀ

mountingꢀbracketsꢀsoꢀtheyꢀcanꢀbeꢀfastenedꢀtoꢀaꢀ

chassisꢀandꢀstackedꢀinꢀlocationsꢀwithꢀlimitedꢀsurfaceꢀ

area.

Whenꢀproperlyꢀfastened,ꢀtheꢀmountingꢀbracketsꢀ

addꢀaꢀheatꢀsinkingꢀbenefitꢀresultingꢀinꢀaꢀsmallerꢀsizeꢀ

perꢀwatt.ꢀDurableꢀ250ꢀTypeꢀresistorsꢀareꢀfullyꢀweldedꢀ

andꢀcoatedꢀwithꢀleadꢀfreeꢀvitreousꢀenamel.

•ꢀSmallꢀsize-to-powerꢀratio.

•ꢀStackable

•ꢀIntegralꢀ mountingꢀ bracketꢀ conductsꢀ heatꢀtoꢀ

mountingꢀsurface.

•ꢀLowꢀprofileꢀforꢀuseꢀinꢀequipmentꢀwhereꢀspaceꢀisꢀ

limited.

•ꢀAll-weldedꢀconstruction.

•ꢀRoHSꢀcompliantꢀproductꢀavailable.ꢀAddꢀ“E”ꢀsuffixꢀtoꢀ

partꢀnumberꢀtoꢀspecify.

SꢁꢀꢂꢁS SPꢁcꢂFꢂcatꢂONS

Series

Wattage

Ohms

1.0-15K

1.0-50K

1.0-10K

1.0-25K

1.0-30K

Max. Voltage*

187

F10

F20

F30

F40

F55

815

281

655

1405

Adjustable versions and 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 resis-

tance value of specified product

chaꢀactꢁꢀꢂStꢂcS

Lead free vitreous enamel

Coating

Core

Ceramic

Tinned lug with hole. RoHS solder composition is 96% Sn, 3.5% Ag, 0.5% Cu

Linearly from 100% @ +25°C to 0% @ +350°C

±5% (J)

Terminals

Derating

Tolerance

Power rating

Based on mounting 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

10x rated wattage for 5 seconds if max. voltage is not exceeded

1 to 20Ω: ±400 ppm/°C

Over 20Ω: ±260 ppm/°C

Overload

Temperature

coefficient

500 VAC: 10 and 20 watt rating. 1000 VAC: 30, 40 and 55 watt rating (mea-

Dielectric with-

sured from lug to mounting bracket)

standing voltage

To calculate, use the formula √P/R

Max. amps

1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com

110

250 Series

‘Thin’ Stackohm®

Vitreous Enamel Power

dꢂmꢁNSꢂONS

(in. / mm)

0.125"

3.175 mm

0.625"

15.875 mm

Series Wattage

Length L

Length A

0.031"

0.794 mm

Diam.

F10

F20

F30

F40

F55

0.750 / 19.050

2.000 / 50.800

1.250 / 31.750

2.000 / 50.800

3.500 / 88.900

1.000 / 25.400

2.313 / 58.750

2.000 / 50.800

2.750 / 69.850

4.250 / 107.950

0.063"

1.588 mm

Diam.

0.125"

10W & 20W

.952m

3.175 mm

.952m

0.110":

2.776 mm

0.125" *

3.175 mm

*Reference dimension only; varies according to resistance

value.

0.375"

9.525 mm

Note: When resistors are stacked, use washers or spacers

as required to insure clearance and improve power dissipa-

tion.

0.250"

6.350 mm

0.188"

4.763 mm

0.125"

3.175 mm

Diam.

0.109"

2.776 mm

Diam.

0.196"

30W, 40W & 55W

.218m3

4.979 mm

524.m0

0.250"

6.350 mm

0.250" *

6.350 mm

0.125"

3.175 mm

0.438"

11.113 mm

mOuNtꢂNg

Derating for stacked mounting

Inꢀadditionꢀtoꢀtheꢀstandardꢀboxꢀbracket,ꢀstudꢀtypeꢀbracketsꢀ

areꢀavailableꢀforꢀstackingꢀtheꢀstandardꢀsizeꢀresistors.ꢀStudꢀ

typeꢀbracketsꢀareꢀavailableꢀinꢀtwoꢀheights:ꢀstandardꢀ(SS,ꢀ

0.437”/11.113mm)ꢀandꢀhighꢀ(SSH,ꢀ0.531”/13.494mm).ꢀTheꢀ

SSHꢀstudꢀisꢀrecommendedꢀwhenꢀstackingꢀtheꢀadjustableꢀTypeꢀ

260,ꢀasꢀitꢀassuresꢀclearanceꢀforꢀtheꢀadjustableꢀlugsꢀtoꢀpassꢀ

eachother.ꢀSpacerꢀwasherꢀNo.ꢀ6027ꢀ(O.D.ꢀ0.219”/5.556mm,ꢀ

I.D.ꢀ0.125”/3.175mm,ꢀthicknessꢀ0.094”/2.381mm)ꢀisꢀrecom-

mendedꢀforꢀuseꢀwithꢀtheꢀminiatureꢀadjustableꢀandꢀfixedꢀresis-

torsꢀtoꢀprovideꢀclearance,ꢀasꢀexplainedꢀabove,ꢀorꢀincreasedꢀ

wattage.ꢀSeeꢀchart.

Stackedꢀresistorsꢀshouldꢀbeꢀderatedꢀtoꢀpreventꢀexcessiveꢀtem-

peraturesꢀdueꢀtoꢀproximity.ꢀApproximateꢀratingsꢀareꢀgivenꢀinꢀ

theꢀtable.

Percent of Single Unit Rating

Miniature with

No. of

0.094” (2.381 mm)

Spacer Washer

Resistors

Std. or Inter.

Miniature

0.125"

0.625"

0.188"

3.175 mm

15.875 mm

4.763 mm

0.125"

Diam.

0.031"

0.794 mm

Diam.

0.063"

0.094"

Diam.

0.063"

3.175 mm

0.109"

2.381 mm

2.776 mm

1.588 mm

Diam.

0.196"

4.979 mm

0.250"

6.350 mm

Diam.

0.125"

3.175 mm

Diam.

0.196"

4.979 mm

0.188"

4.763 mm

0.813"

20.638 mm

0.110":

2.776 mm

Core

size

Core

size

Core

size

0.125"

3.175 mm

0.125"

3.175 mm

0.375"

9.525 mm

0.438"

0.250"

6.350 mm

0.438"

11.113 mm

Brackets

0.188"

cemented

in core

4.763 mm

0.125"

3.175 mm

Diam.

0.109"

0.125"

Diam.

3.175 mm

0.109"

2.776 mm

0.156" x0.313"

3.969 x 7.938 mm

Slot

Diam.

0.196"

4.979 mm

0.250"

6.350 mm

0.188"

4.763 mm

Core

size

Core

size

0.125"

3.175 mm

0.438"

0.531"

0.5"

12.7 mm

11.113 mm 13.494 mm

(SS)

(SSH)

(continued)

1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com

111

ꢀ=ꢀStandardꢀvalues;ꢀ

250 Series

‘Thin’ Stackohm®

Vitreous Enamel Power

cOꢀꢁ aNd tꢁꢀmꢂNal SꢁlꢁctꢂON

ForꢀMadeꢀtoꢀOrderꢀTypeꢀ250ꢀStackohmꢀResistors

Code

for

Free Air

Max.

†

Core Dimensions

Wattage

Min. Practical Core

Fig.

No.

Standard

Terminal

Rating*

Length L

Width W

Thickness T

Ohms Ohms

Dia.

Dimension A

Dimension B

Miniature

ꢀ

10ꢀ

15ꢀ

20ꢀ

12ꢀ

0.750”ꢀ(19.050mm)ꢀ

1.000”ꢀ(25.400mm)ꢀ

2.000”ꢀ(50.800mm)ꢀ

0.688”ꢀ(17.463mm)ꢀ

0.375”ꢀ(9.525mm)ꢀ

0.594”ꢀ(15.081mm)ꢀ

0.125”ꢀ(3.175mm)ꢀ

0.234”ꢀ(5.953mm)ꢀ

1ꢀ

15,000ꢀ

25,000ꢀ

50,000ꢀ

20,000ꢀ

TAꢀ

TBꢀ

1ꢀ

1.000”ꢀ(25.400mm)ꢀ

1.250”ꢀ(31.750mm)ꢀ

2.313”ꢀ(58.750mm)ꢀ

ꢀ

0.375”ꢀ(9.525mm)ꢀ

ꢀ

1ꢀ

**ꢀ

Intermediate

ꢀ

21ꢀ

25ꢀ

1.000”ꢀ(25.400mm)ꢀ

1.500”ꢀ(38.100mm)ꢀ

0.813”ꢀ(20.638mm)ꢀ

0.250”ꢀ(6.350mm)ꢀ

1ꢀ

8,000ꢀ

TDꢀ

2ꢀ

1.313”ꢀ(33.350mm)ꢀ

1.813”ꢀ(46.050mm)ꢀ

0.594”ꢀ(15.081mm)ꢀ

15,000ꢀ

Standard

ꢀ

5ꢀ

3,ꢀ4ꢀ

1.750”ꢀ(44.450mm)ꢀ

2.000”ꢀ(50.800mm)ꢀ

30ꢀ

1.250”ꢀ(31.750mm)ꢀ

ꢀ

1.000”ꢀ(25.400mm)ꢀ

ꢀ

0.250”ꢀ(6.350mm)ꢀ

ꢀ

1ꢀ

ꢀ

10,000ꢀ

ꢀ

0.938”ꢀ(23.813mm)ꢀ

ꢀ

57ꢀ

ꢀ

5ꢀ

3,ꢀ4ꢀ

2.500”ꢀ(63.500mm)ꢀ

2.750”ꢀ(69.850mm)ꢀ

ꢀ

40ꢀ

ꢀ

2.000”ꢀ(50.800mm)ꢀ

ꢀ

1.000”ꢀ(25.400mm)ꢀ

ꢀ

0.250”ꢀ(6.350mm)ꢀ

ꢀ

1ꢀ

ꢀ

25,000ꢀ

ꢀ

0.938”ꢀ(23.813mm)ꢀ

ꢀ

5ꢀ

3,ꢀ4ꢀ

4.000”ꢀ(1.1.600mm)

ꢀ

55ꢀ

ꢀ

3.500”ꢀ(88.900mm)ꢀ

ꢀ

1.000”ꢀ(25.400mm)ꢀ

ꢀ

0.250”ꢀ(6.350mm)ꢀ

ꢀ

1ꢀ

ꢀ

30,000ꢀ

ꢀ

0.938”ꢀ(23.813mm)ꢀ

ꢀ

57ꢀ

ꢀ

4.250”ꢀ(107.950mm)ꢀ

ꢀ

5ꢀ

3,ꢀ4ꢀ

5.250”ꢀ(133.350mm)

ꢀ

‡

ꢀ

70ꢀ

ꢀ

4.750”ꢀ(120.650mm)ꢀ 1.000”ꢀ(25.400mm)ꢀ

0.250”ꢀ(6.350mm)ꢀ

ꢀ

1ꢀ

ꢀ

120,000 ꢀ

ꢀ

0.938”ꢀ(23.813mm)ꢀ

ꢀ

5.500”ꢀ(139.700mm)ꢀ

ꢀ

5ꢀ

3,ꢀ4ꢀ

6.500”ꢀ(165.100mm)ꢀ

6.750”ꢀ(171,450mm)

‡

150,000 ꢀ

ꢀ

95ꢀ

ꢀ

6.000”ꢀ(152.400mm)ꢀ 1.000”ꢀ(25.400mm)ꢀ

0.250”ꢀ(6.350mm)ꢀ

ꢀ

1ꢀ

ꢀ

0.938”ꢀ(23.813mm)ꢀ

ꢀ

‡

*Basedꢀonꢀmountingꢀonꢀsteeelꢀpanelꢀ10”ꢀ(254mm)ꢀꢀxꢀ10”ꢀxꢀ0.040”ꢀ(1.016mm).

TheseꢀsizesꢀareꢀOhmiconeꢀ(silicone-ceramic)ꢀcoated–typeꢀ450-460.

**Userꢀsuppliesꢀbrackets.

†

Insideꢀdimensionsꢀofꢀcoreꢀare:ꢀ0.250”ꢀ(6.350mm)ꢀxꢀ0.047”ꢀ(1.191mm)ꢀforꢀTA;ꢀ0.406”ꢀ

(10.319mm)ꢀxꢀ0.047”ꢀ(1.191mm)ꢀforꢀTB;ꢀ0.438”ꢀ(11.113mm)ꢀxꢀ0.063”ꢀ(1.588mm)ꢀforꢀTD;ꢀ

0.672”ꢀ(17.069mm)ꢀxꢀ0.063”ꢀ(1.588mm)ꢀforꢀTE.

OꢀdꢁꢀꢂNg ꢂNFOꢀmatꢂON

Series

RoHS Compliant

Made-to-order Parts

Terminal Type

See “Resistor Terminals for Tubular Cores”

Tolerance RoHS

J = 5% Compliant

See web-

site for

custom

core info

Coating

Wattage Tolerance Ohms

Blank = Vitreous

C = Centohm

S = Silicone

F = 1%

H = 3%

J = 5%

1R0 = 1Ω

250 = 250Ω

1K0 = 1,000Ω

K = 10% 25K = 25,000Ω

Series

Wattage &

Core Code

See “Core and

Mounting Brackets

Ohms

25K5 = 25,500Ω

Vitreous enamel:

25 = 250 Fixed

(user supplies bracket for core TB) Example:

B = Stacking box

1R00 = 1Ω

26 = 260 Adjustable Terminal Selection” S = Stacking stud, std. height

250R = 250Ω

1K00 = 1,000Ω

25K0 = 25,000Ω

25K5 = 25,500Ω

H = Stacking stud high

Silicone ceramic:

U = Unit type

45 = 450 Fixed

46 = 460 Adjustable

Standard Values

Wattage

Part No.

Prefixꢀ

Suffixꢀ

Part No.

Prefixꢀ

Suffixꢀ

Part No.

Prefixꢀ

Suffixꢀ

ꢀ

1ꢀ –––1R0Eꢀ ꢀ ꢀ ꢀ ꢀ

1.5ꢀ–––1R5Eꢀ ꢀ ꢀ

2ꢀ –––2R0Eꢀ ꢀ ꢀ ꢀ ꢀ



ꢀ

50ꢀ –––50REꢀ ꢀ

75ꢀ –––75REꢀ

100ꢀ –––100Eꢀ ꢀ ꢀ ꢀ ꢀ

ꢀ

ꢀ ꢀ



ꢀ

1,500ꢀ –––1K5Eꢀ ꢀ ꢀ ꢀ

2,000ꢀ –––2K0Eꢀ ꢀ

2,500ꢀ –––2K5Eꢀ ꢀ ꢀ ꢀ ꢀ

ꢀ



ꢀ

ꢀ

ꢀ

ꢀ

checkꢀavailabilityꢀatꢀ

www.ohmite.com

3ꢀ –––3R0Eꢀ

4ꢀ –––4R0Eꢀ

ꢀ

ꢀ ꢀ

150ꢀ –––150Eꢀ

ꢀ

ꢀ

ꢀ

3,000ꢀ –––3K0Eꢀ ꢀ

ꢀ

ꢀ ꢀ

ꢀ

ꢀ

200ꢀ –––200Eꢀ ꢀ

ꢀ

ꢀ ꢀ



4,000ꢀ –––4K0Eꢀ

5,000ꢀ –––5K0Eꢀ

6,000ꢀ –––6K0Eꢀ

7,500ꢀ –––7K5Eꢀ

ꢀ

ꢀ

ꢀ

5ꢀ –––5R0Eꢀ ꢀ ꢀ ꢀ ꢀ

250ꢀ –––250Eꢀ

300ꢀ –––300Eꢀ

400ꢀ –––400Eꢀ ꢀ

ꢀ

ꢀ ꢀ ꢀ

ꢀ

ꢀ

7.5ꢀ–––7R5Eꢀ ꢀ

10ꢀ –––10REꢀ ꢀ ꢀ

15ꢀ –––15REꢀ ꢀ ꢀ ꢀ

20ꢀ –––20REꢀ ꢀ

ꢀ

ꢀ

ꢀ

ꢀ

ꢀ

ꢀ

ꢀ

ꢀ

ꢀ



500ꢀ –––500Eꢀ ꢀ ꢀ ꢀ ꢀ

ꢀ10,000ꢀ –––10KEꢀ

ꢀ15,000ꢀ –––15KEꢀ

ꢀ20,000ꢀ –––20KEꢀ

ꢀ25,000ꢀ –––25KEꢀ

ꢀ40,000ꢀ –––40KEꢀ

ꢀ

ꢀ

ꢀ



ꢀ

750ꢀ –––750Eꢀ

ꢀ

ꢀ ꢀ

ꢀ

25ꢀ –––25REꢀ ꢀ ꢀ ꢀ ꢀ



800ꢀ –––800Eꢀ

ꢀ

ꢀ

ꢀ

30ꢀ –––30REꢀ ꢀ

40ꢀ –––40REꢀ

ꢀ

1,000ꢀ –––1K0Eꢀ ꢀ ꢀ ꢀ ꢀ

1,250ꢀ –––1K25Eꢀ ꢀ ꢀ



ꢀ

ꢀ

1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com

112

F20J1K5E [OHMITE]

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