98
KOA Speer Electronics, Inc. • Bolivar Drive • P.O. Box 547 • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 2/19/07
resistors
features
•Lead frame construction
•High density assembly and excellent self-standing strength
•Marking: Blue body color with color dot marking
for resistance and tolerance values
•Products with lead-free terminations meet
RoHS requirements. Pb located in glass material,
electrode and resistor element is exempt per Annex 1,
exemption 5 of EU directive 2005/95/EC
LF,LFF,RK26
radial metal film leaded resistors
T: Taping
(1/8W,
1/4W only)
Blank: Bulk
ordering information - LF, LFF
C: ±50
D: ±100
L: ±200
LF
LFF
1/8: 0.125W
1/4: 0.25W
1/4L: 0.25W
1/2: 0.5W
T: Sn
(Other
termination
styles may
be available,
please contact
factory for
options)
D: ±0.5%
F: ±1%
G: ±2%
J: ±5%
LF C1/4 T
Power
Rating
Type T.C.R.
(ppm/°C) Tolerance
Termination
Material Taping
New Part # T
Ammo
(1/8, 1/4
only)
Packaging
A D
For further information
on packaging, please
refer to Appendix C.
dimensions and construction
h
Ceramic CoreTrimming Line
L
Marking
Insulation
Coating
End
Cap
Resistive
Film
Lead
Frame
P
H
D
.02±.004
(0.5±0.1)
t
L (max.)
LF1/8 .197
(5.0)
.100±.008
(2.54±0.2)
.236±.039
(6.0±1.0)
.217
(5.5)
.197±.039
(5.0±1.0)
.200
(5.08)
.200±.008
(5.08±0.2)
.300±.012
(7.62±0.3)
.100
(2.54)
.098
(2.5)
.295
(7.5)
.285
(7.25)
LF1/4
LF1/4L
LF1/2
LFF1/4
RK26B2E
Type D (max.) P H h (max.)
Dimensions inches (mm)
±2%, ±5%: 2 significant
figures + 1 multiplier
“R” indicates decimal
on value <10Ω
±0.5%, ±1%: 3 significant
figures + 1 multiplier
“R” indicates decimal
on value <100Ω
Nominal
Resistance
1000
.012
(0.3)
.010
(0.25)
t
.413
(9.6)
.200±.012
(5.08±0.3)
.118±.020
(3.0±0.5)
.217±.020
(5.5±0.5)
T: Taping
Blank: Bulk
ordering information - RK26
B: ±350RK26 2E: 0.25W T: Sn
(Other
termination
styles may be
available,
please contact
factory for
options)
F: ±1%
G: ±2%
J: ±5%
RK26 B2E T
Power
Rating
Type T.C.R.
(ppm/°C) Tolerance
Termination
Material Taping
New Part # T
Ammo
Packaging
A F
±2%, ±5%: 2 significant
figures + 1 multiplier
“R” indicates decimal
on value <10Ω
±0.5%, ±1%: 3 significant
figures + 1 multiplier
“R” indicates decimal
on value <100Ω
Nominal
Resistance
1003
1570 Reader's Spreads pg1-188 3/26/07 2:27 PM Page 96
LF,LFF,RK26
radial metal film leaded resistors
Absolute
Maximum
Overload
Voltage
Absolute
Maximum
Working
Voltage
Part
Designation
Operating
Temperature
Range
Rated
Ambient
Temperature
Power
Rating
applications and ratings
T.C.R.
(ppm/°C)
Max.
LF1/8
LF1/4
LF1/4L
LF1/2
LFF1/4
0.125W
0.25W
0.5W
0.25W
44.9 - 562k 4.7 - 1M 1 - 1M
10 - 1M 10 - 1M 1 - 1M
10 - 100k ——
10 - 1M 10 - 1M 1 - 1M
C: ±50
D: ±100
L: ±200
C: ±50
D: ±100
L: ±200
C: ±50
D: ±100
L: ±200
C: ±50
D: ±100
200V 400V
+70°C
250V 500V
350V 700V
250V 500V
-55°C
to
+150°C
D±0.5%
E-96
F±1%
E-24,E-96
J±5%
E-24
Resistance Range (Ω)
Derating Curve
environmental applications
% Rated Power
100
80
60
40
20
-60 -40 0 40 60 80 100 160
70
20
Ambient Temperature
(°C)
0
-55
120
155
-20 140
150
LFF, RK26
LF
Performance Characteristics
Parameter Requirement
Effects of Solder
Short Time Overload
Load Life
Moisture Resistance
Vibration
Temperature Cycling
±(0.5% + 0.05Ω)
±(0.5% + 0.05Ω)
±(1.0% + 0.05Ω)
±(0.2% + 0.05Ω)
1 - 1M
1 - 1M
10 - 100k
1 - 1M
G±2%
E-24
RK26B2E 0.25W
— 100K - 22M 100K - 33M
B: ±350 500V 700V
100K - 33M
-55°C
to
+155°C
99
KOA Speer Electronics, Inc. • Bolivar Drive • P.O. Box 547 • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 1/03/05
resistors
1570 Reader's Spreads pg1-188 3/26/07 2:27 PM Page 97
