KAL Series
Stackpole Electronics, Inc.
Aluminum Housed Chassis Mount Resistor
Resistive Product Solutions
Features:
•
•
•
•
•
•
•
•
•
•
•
Aluminum housing for maximum heat dissipation
Complete welded construction
10 – 50W tinned copper terminals
100 – 250W threaded terminals
Centerless ground steatite or alumina cores
Molded epoxy body for heat transfer
Non-inductive winding available (NKAL)
Suitable for electrical component grade wash process and can be conformally coated or potted
100% RoHS compliant and lead free without exemption
Halogen free
REACH compliant
Electrical Specifications
Power Rating (W)
@ 25 °C
Commercial
MIL
12.5
10
Type / Code
MIL-R-26
Ref.
KAL10
RE-65
KAL25
KAL50
RE-70
RE-75
25
50
20
30
KAL100
RE-77
100
75
KAL250
NKAL10
RE-80
250
12.5
120
NKAL25
NKAL50
NKAL100
100
NKAL250
250
Ohmic Range (Ω) and Tolerance
TCR (ppm/ºC)
3000
<
0.1 Ω 10 Ω >
2500
1000
25
50
-
Dielectric
Withstanding
Voltage (VAC)
1000
0.1 Ω
9.9 Ω
49 Ω
50 Ω
=
=
=
=
±100 ppm
±50 ppm
±30 ppm
±20 ppm
0.5%
1%, 3%, 5%
0.05 - 30K
1 - 1K
1 - 1K
0.05 - 51.1K
0.05 - 150K
1 - 500
-
2500
0.1 - 3K
-
1 - 499
3000
-
0.1%
-
0.1 - 3K
0.05 - 15K
1 - 499
0.05 - 24.9K
0.05 - 75K
1 - 249
0.1 - 1.5K
-
0.1 - 1.5K
Mechanical Specifications – KAL/NKAL10, 25, 50
Type
KAL/NKAL10
KAL/NKAL25
KAL/NKAL50
A
KAL/NKAL25
KAL/NKAL50
C
D
E
F
G
Unit
±
±
±
±
±
±
H
0.005
0.13
0.005
0.13
0.005
0.13
0.625
15.88
0.781
19.84
0.844
21.44
±
±
±
±
±
±
J
0.005
0.13
0.005
0.13
0.005
0.13
0.750
19.05
1.062
26.97
1.968
49.99
±
±
±
±
±
±
K
0.031
0.79
0.031
0.79
0.031
0.79
1.375
34.93
1.938
49.23
2.781
70.64
±
±
±
±
±
±
L
0.062
1.57
0.062
1.57
0.062
1.57
0.420
10.67
0.550
13.97
0.630
16.00
± 0.015
± 0.38
± 0.015
± 0.38
± 0.015
± 0.38
M
0.800
20.32
1.080
27.43
1.140
28.96
±
±
±
±
±
±
N
0.015
0.38
0.015
0.38
0.015
0.38
0.390
9.91
0.546
13.87
0.610
15.49
±
±
±
±
±
±
P
0.031
0.79
0.031
0.79
0.031
0.79
inches
mm
inches
mm
inches
mm
Unit
0.075
1.91
0.088
2.24
0.088
2.24
±
±
±
±
±
±
0.010
0.25
0.010
0.25
0.010
0.25
0.190
4.83
0.260
6.60
0.300
7.62
±
±
±
±
±
±
0.015
0.38
0.015
0.38
0.015
0.38
0.093
2.36
0.172
4.37
0.196
4.98
±
±
±
±
±
±
0.010
0.25
0.010
0.25
0.010
0.25
0.093
2.36
0.125
3.18
0.125
3.18
±
±
±
±
±
±
0.005
0.13
0.005
0.13
0.005
0.13
0.102
2.59
0.115
2.92
0.107
2.72
±
±
±
±
±
±
0.086
2.18
0.086
2.18
0.086
2.18
±
±
±
±
±
±
0.005
0.13
0.005
0.13
0.005
0.13
0.312
7.92
0.438
11.13
0.410
10.41
±
±
±
±
±
±
0.062
1.57
0.062
1.57
0.062
1.57
inches
mm
inches
mm
inches
mm
Type
KAL/NKAL10
B
0.562
14.27
0.719
18.26
1.563
39.70
Rev Date: 2/26/2021
This specification may be changed at any time without prior notice.
Please confirm technical specifications before you order and/or use.
1
0.015
0.38
0.015
0.38
0.015
0.38
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KAL Series
Stackpole Electronics, Inc.
Aluminum Housed Chassis Mount Resistor
Resistive Product Solutions
Mechanical Specifications – KAL/NKAL100
Type
A
B
C
D
E
F
Unit
2.362 ± 0.039
60.00 ± 1.00
H
3.504 ± 0.039
89.00 ± 1.00
J
5.315 ± 0.039
135.00 ± 1.00
L
1.811 ± 0.039
46.00 ± 1.00
P
2.756 ± 0.039
70.00 ± 1.00
Unit
inches
mm
KAL/NKAL100
2.717 ± 0.079
69.00 ± 2.00
G
1.752 ± 0.039
44.50 ± 1.00
0.187 ± 0.031
4.75 ± 0.79
0.748 ± 0.020
19.00 ± 0.50
0.197 ± 0.012
5.00 ± 0.30
0.906 ± 0.079
23.00 ± 2.00
inches
mm
Mechanical Specifications – KAL/NKAL250
Type
A
3.858 ± 0.079
98.00 ± 2.00
KAL/NKAL250
H
0.250 ± 0.031
6.35 ± 0.79
B
C
D
2.520 ± 0.039 4.488 ± 0.039 6.102 ± 0.039
64.00 ± 1.00 114.00 ± 1.00 155.00 ± 1.00
J
L
P
0.984 ± 0.020 0.197 ± 0.012 0.827 ± 0.079
25.00 ± 0.50
5.00 ± 0.30
21.00 ± 2.00
E
2.087 ± 0.039
53.00 ± 1.00
R
0.866
22.00
F
3.031 ± 0.039
77.00 ± 1.00
S
3.071
78.00
G
2.185 ± 0.039
55.50 ± 1.00
Unit
inches
mm
Unit
inches
mm
Performance Characteristics
Test
Test Condition
Short Time Overload
Moisture Resistance
5 X wattage rating - 5 seconds
Temp 40ºC moisture 95% CDC 100V for 500 hours
Load rating (chasis is mounted)
Load Life
1.5 hours ON, 0.5 hours OFF. Repeated for 1000 hours
Operating temperature range is -55°C to +275°C
Rev Date: 2/26/2021
This specification may be changed at any time without prior notice.
Please confirm technical specifications before you order and/or use.
2
Result
∆R ± (0.5% + 0.05 Ω) MAX
∆R ± (0.5% + 0.05 Ω) MAX
∆R ± (1.5% + 0.05 Ω) MAX
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KAL Series
Stackpole Electronics, Inc.
Aluminum Housed Chassis Mount Resistor
Resistive Product Solutions
Power Derating Curve:
Note: This curve assumes the part is mounted on a properly sized heat sink.
Type
Recommended Heat Sink Parameters
KAL10
KAL25
KAL50
KAL100
KAL250
130 sq inch surface area, 0.040" thick
166 sq inch surface area, 0.040" thick
286 sq inch surface area, 0.060" thick
295 sq inch surface area, 0.125" thick
Recommended Solder Profile
This information is intended as a reference for solder profiles for Stackpole resistive components. These profiles should
be compatible with most soldering processes. These are only recommendations. Actual numbers will depend on board
density, geometry, packages used, etc., especially those cells labeled with “*”.
100% Matte Tin / RoHS Compliant Terminations
Soldering iron recommended temperatures: 330°C to 350°C with minimum duration.
Maximum number of reflow cycles: 3.
Wave Soldering
Description
Maximum
Recommended
Preheat Time
80 seconds
70 seconds
Temperature Diff.
140°C
120°C
Solder Temp.
260°C
250°C
Dwell Time at Max.
10 seconds
5 seconds
Ramp DN (°C/sec)
N/A
N/A
Temperature Diff. = Defference between final preheat stage and soldering stage.
Rev Date: 2/26/2021
This specification may be changed at any time without prior notice.
Please confirm technical specifications before you order and/or use.
3
Minimum
60 seconds
100°C
240°C
*
N/A
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KAL Series
Stackpole Electronics, Inc.
Aluminum Housed Chassis Mount Resistor
Resistive Product Solutions
Convection IR Reflow
Description
Maximum
Recommended
Minimum
Ramp Up (°C/sec)
Dwell Time > 217°C
Solder Temp.
Dwell Time at Max.
Ramp DN (°C/sec)
3°C/sec
150 seconds
260°C
30 seconds
6°C/sec
2°C/sec
90 seconds
245°C
15 seconds
3°C/sec
*
60 seconds
*
10 seconds
*
Recommended Lead Free Resistor Reflow Profile
RoHS Compliance
Stackpole Electronics has joined the worldwide effort to reduce the amount of lead in electronic components and to meet the various
regulatory requirements now prevalent, such as the European Union’s directive regarding “Restrictions on Hazardous Substances”
(RoHS 3). As part of this ongoing program, we periodically update this document with the status regarding the availability of our
compliant components. All our standard part numbers are compliant to EU Directive 2011/65/EU of the European Parliament as
amended by Directive (EU) 2015/863/EU as regards the list of restricted substances.
RoHS Compliance Status
Standard
Product
Series
KAL
Description
Package /
Termination
Type
Standard
Series
RoHS
Compliant
Lead-Free Termination
Composition
Lead-Free
Mfg. Effective Date
(Std Product Series)
Lead-Free
Effective Date
Code
(YY/WW)
Aluminum Housed Surface Mount Resistor
General Purpose/Precision
High Power Resistor
Special
YES
100% Matte Sn
Jan-06
06/01
“Conflict Metals” Commitment
We at Stackpole Electronics, Inc. are joined with our industry in opposing the use of metals mined in the “conflict region” of the eastern
Democratic Republic of the Congo (DRC) in our products. Recognizing that the supply chain for metals used in the electronics industry
is very complex, we work closely with our own suppliers to verify to the extent possible that the materials and products we supply do
not contain metals sourced from this conflict region. As such, we are in compliance with the requirements of Dodd-Frank Act regarding
Conflict Minerals.
Rev Date: 2/26/2021
This specification may be changed at any time without prior notice.
Please confirm technical specifications before you order and/or use.
4
www.seielect.com
marketing@seielect.com
KAL Series
Stackpole Electronics, Inc.
Aluminum Housed Chassis Mount Resistor
Resistive Product Solutions
Compliance to “REACH”
We certify that all passive components supplied by Stackpole Electronics, Inc. are SVHC (Substances of Very High Concern) free and
compliant with the requirements of EU Directive 1907/2006/EC, “The Registration, Evaluation, Authorization and Restriction of
Chemicals”, otherwise referred to as REACH. Contact us for complete list of REACH Substance Candidate List.
Environmental Policy
It is the policy of Stackpole Electronics, Inc. (SEI) to protect the environment in all localities in which we operate. We continually strive
to improve our effect on the environment. We observe all applicable laws and regulations regarding the protection of our environment
and all requests related to the environment to which we have agreed. We are committed to the prevention of all forms of pollution.
How to Order
K
A
Product Series
Code
Description
KAL
Standard
NKAL Non-inductive
L
Power Rating
Code
W
10
10
25
25
50
50
100
100
250
250
1
0
Tolerance
Code
Tol
B
0.1%
D
0.5%
F
1%
H
3%
J
5%
Rev Date: 2/26/2021
This specification may be changed at any time without prior notice.
Please confirm technical specifications before you order and/or use.
F
Code
B
5
B
1
Packaging
Description
Size
10
25
Bulk
50
100
250
0
MOQ
250
250
250
60
30
K
0
Resistance Value
Four characters with the
multiplier used as the
decimal holder.
"L" used as multiplier
-3
of 10 for any value
under 0.1 ohm.
0.05 ohm = 50L0
0.4 ohm = R400
1 ohm = 1R00
30 Kohm = 30K0
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marketing@seielect.com
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