KAL Series
Aluminum Housed Chassis Mount Resistor
Stackpole Electronics, Inc.
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
• RoHS compliant, lead-free and halogen-free
Type / Code
KAL10
KAL25
KAL50
KAL100
KAL250
NKAL10
NKAL25
NKAL50
NKAL100
NKAL250
MIL-R-26
Ref.
RE-65
RE-70
RE-75
RE-77
RE-80
-
Power Rating
(Watts @ 25ºC)
Commercial
MIL
12.5W
10W
25W
20W
50W
30W
100W
75W
250W
120W
12.5W
25W
50W
-
100W
250W
Electrical Specifications
Dielectric
Withstanding
Voltage
TCR (ppm/ºC)
1,000 VAC
3,000 VAC
2,500 VAC
<0.1Ω = ±100ppm
0.1Ω - 9.9Ω = ±50ppm
10Ω - 49Ω = ±30ppm
>50Ω = ±20ppm
1,000 VAC
3,000 VAC
2,500 VAC
<0.1Ω = ±100ppm
0.1Ω - 9.9Ω = ±50ppm
10Ω - 49Ω = ±30ppm
>50Ω = ±20ppm
Ohmic Range (Ω) and Tolerance
0.1%
1 - 1K
-
1 - 499
-
0.5%
1 - 1K
1 - 500
-
1 - 499
1 - 249
-
1%, 3%, 5%
0.05 - 30K
0.05 - 51.1K
0.05 - 150K
0.1 - 3K
0.1 - 3K
0.05 - 15K
0.05 - 24.9K
0.05 - 75K
0.1 - 1.5K
0.1 - 1.5K
Test
Short time Overload
Moisture resistance
Load life
Power Derating Curve:
Performance Characteristics
Test Condition
5x wattage rating - 5 seconds
Temp 40ºC moisture 95% CDC 100V for 500 hours
Load rating (chasis is mounted)
1.5 hours ON, 0.5 hours OFF. Repeated for 1000 hours
Result
∆R ± (0.5% + 0.05Ω) MAX
∆R ± (0.5% + 0.05Ω) MAX
∆R ± (1.5% + 0.05Ω) MAX
100
75
50
25
Rev Date: 02/14/2019
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
0 25 50
1
100 150 200
Ambient Temperature (ºC)
250 275 300
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