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B-12U68R1F

Description
Fixed Resistor, Wire Wound, 10W, 68.1ohm, 1000V, 1% +/-Tol
CategoryPassive components    The resistor   
File Size25KB,1 Pages
ManufacturerTT Electronics plc
Websitehttp://www.ttelectronics.com/
Download Datasheet Parametric Compare View All

B-12U68R1F Overview

Fixed Resistor, Wire Wound, 10W, 68.1ohm, 1000V, 1% +/-Tol

B-12U68R1F Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerTT Electronics plc
package instructionAxial,
Reach Compliance Codecompliant
ECCN codeEAR99
structureCoated
JESD-609 codee0
Lead diameter1 mm
Lead length34.9 mm
Manufacturer's serial numberB
Number of terminals2
Maximum operating temperature275 °C
Minimum operating temperature-55 °C
Package diameter7.9 mm
Package length31 mm
Package formAxial
Rated power dissipation(P)10 W
GuidelineMIL-R-26
resistance68.1 Ω
Resistor typeFIXED RESISTOR
seriesB
technologyWIRE WOUND
Terminal surfaceTin/Lead (Sn/Pb)
Tolerance1%
Operating Voltage1000 V

B-12U68R1F Preview

BERYLLIA CORE, SILICONE
COATED POWER RESISTORS
MIL-R-26 (RW) & COMMERCIAL
INDUSTRIAL STYLES
ISO-9001
Registered
B
SERIES
IRC "B" Series resistors offer power ratings up to 4 times
higher than standard power wirewound resistors of equal size.
This is made possible due to a finer heat dissipation pattern.
The Series "B" resistors will equal the same stability and en-
vironmental requirements of lower rated conventional resis-
tors.
Specifications:
Heat Dissipation:
Beryllia core provides finest possible pat-
tern.
Power Rating:
Up to 4 times higher than conventional resis-
tors, depending upon physical size.
Power to size ratio:
35% to 400% greater than standard
silicone coated types.
Wattage:
1 watt to 18 watts
Standard Temperature Coefficients:
±
20 PPM/°C 10ΩUP
± 50 PPM/°C 1Ω to 9.9Ω
± 400 PPM/°C 0.5Ω to 0.499Ω
± 650 PPM/° C 0.1Ω to 0,499Ω
Special Temperature Coefficients:
22 Special T.C.'s avail-
able from -20PPM to +6000 PPM
Tolerance:
±1% to +0.1%
Resistance Values:
From .1 to 150K
Coating:
Special high temperature silicone coating, impervi-
ous to moisture, salt water immersion, and abrasion.
Leads:
Tinned copperweld is standard
Dielectric Strength:
500 volts AC for B-1, B-2, B-3: all others
1000 volts.
Insulation Resistance:
5000 megaohms minimum dry
IRC
Style
B-1
B-2
B-3
Rated
Wattage
U
V
1.0
1.5
2.0
2.75
5.0
6.5
7.0
8.0
10.0
12.0
18.0
Dimensions
Length A
.250+.032
.312+.062
.406+.032
.562+.062
.812+.062
.500+.062
.625+.062
Lead
IRC
Diam. C
Max
Diameter B AWG Resistance
.085+.020
.078+.032
.094+.032
.188+.032
.188+.032
.218+.032
.250+.032
#24
#24
#24
#20
#20
#18
#18
#18
#18
#18
2.0K
3.4K
6.5K
22K
34K
18K
40K
54K
75K
150K
Metric Dimensions
Dimensions
Length A
Diameter B
6.4+ 0.8
7.9+1.6
10.3+0.8
14.3+1.6
20.6+1.6
12.7+1.6
15.7+1.6
22.2+1.6
31+1.6
45.2+1.6
120
% OF RATED POWER
100
80
60
40
20
0
25
Lead
Dia. C mm
0.5
0.5
0.5
0.8
0.8
1.0
1.0
1.0
1.0
1.0
2.25
B-5 4.0
B-5A 4.5
B-5C 5.0
B-6 6.0
B-10 7.0
B-12 10.0
B-15 15.0
2.2 +0.5
2.0+.08
2.4+.08
4.8+.08
4.8+.08
5.5+.08
6.4+.08
7.9+.08
7.9+.08
7.9+.08
.875+.062
.312+.032
1.218+.o62 .312+.032
1.780+.062 .375+.032
Derating
Ambient Temperature:
Operating temperature range of -55°C to + 350°C.
Higher temperature require derating as illustrated.
Stability:
Resistance chance is 1/2 or less than that of conventional power
resistors when operated at the same wattage.
Characteristic U
1. 275° C maximum hotspot temperature.
2. 5% maxium
R for 2000 hour load life
Characteristic V
1. 350°C maximum hotspot temperature.
2. 3% maximum
R for 2000 hour load life.
CH
CH
AR
.U
AR
.V
75
125
175
225
275
AMBIENT TEMP. DEG. CENTIGRADE
350
WIREWOUND AND FILM TECHNOLOGIES DIVISION
736 Greenway Road • Boone, North Carolina 28607-1860 • Tel: 828-264-8861 • Fax: 828-264-8866 • www.irctt.com
1

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Description Fixed Resistor, Wire Wound, 10W, 68.1ohm, 1000V, 1% +/-Tol Fixed Resistor, Wire Wound, 10W, 150ohm, 1000V, 1% +/-Tol Fixed Resistor, Wire Wound, 10W, 0.1ohm, 1000V, 1% +/-Tol Fixed Resistor, Wire Wound, 10W, 0.15ohm, 1000V, 1% +/-Tol Fixed Resistor, Wire Wound, 10W, 0.332ohm, 1000V, 1% +/-Tol
Is it Rohs certified? incompatible incompatible incompatible incompatible incompatible
Maker TT Electronics plc TT Electronics plc TT Electronics plc TT Electronics plc TT Electronics plc
Reach Compliance Code compliant compliant compli compli compli
ECCN code EAR99 EAR99 EAR99 EAR99 EAR99
structure Coated Coated Coated Coated Coated
JESD-609 code e0 e0 e0 e0 e0
Lead diameter 1 mm 1 mm 1 mm 1 mm 1 mm
Lead length 34.9 mm 34.9 mm 34.9 mm 34.9 mm 34.9 mm
Manufacturer's serial number B B B B B
Number of terminals 2 2 2 2 2
Maximum operating temperature 275 °C 275 °C 350 °C 350 °C 350 °C
Minimum operating temperature -55 °C -55 °C -55 °C -55 °C -55 °C
Package diameter 7.9 mm 7.9 mm 7.9 mm 7.9 mm 7.9 mm
Package length 31 mm 31 mm 31 mm 31 mm 31 mm
Package form Axial Axial Axial Axial Axial
Rated power dissipation(P) 10 W 10 W 10 W 10 W 10 W
Guideline MIL-R-26 MIL-R-26 MIL-R-26 MIL-R-26 MIL-R-26
resistance 68.1 Ω 150 Ω 0.1 Ω 0.15 Ω 0.332 Ω
Resistor type FIXED RESISTOR FIXED RESISTOR FIXED RESISTOR FIXED RESISTOR FIXED RESISTOR
series B B B B B
technology WIRE WOUND WIRE WOUND WIRE WOUND WIRE WOUND WIRE WOUND
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Tolerance 1% 1% 1% 1% 1%
Operating Voltage 1000 V 1000 V 1000 V 1000 V 1000 V
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