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603-668-3210

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Power Wirewound Resistors
(AK, P & C Series)


FEATURES:Resistor manufacturing

  • Resistance Tolerance: 5%, 3%, 1% std
    (Accuracies available to .05%)
  • Standard Resistance Range: .1Ω to maximum listed.
  • Temperature Coefficient: 90ppm/°C less than 1Ω ; 50 ppm/°C 1 Ω to 10Ω ; 30 ppm/°C 10Ω to 100Ω ; 20 ppm/°C 100 Ω and above.
  • Short Term Overload: 5 seconds at 5 times rated power.
  • Operating Range: -55°C to + 250°C (U Rating) or +350°C (V Rating)
  • Covering: Flame Retardant Silicone (Molded & Coated)
  • Windings: Space wound on Ceramic or Alumina Oxide Cores.
    Non-inductive windings are available & identified by adding an "N" in front of the style number.
  • Divide maximum resistance by 2 for non-inductive windings.
  • "U" and "V" wattage ratings and derating curves are based on MIL-PRF-26 characteristics. "V" ratings are intended for 5% tolerance units, and result in operation at a hotspot of approximately 350°C; "U" ratings govern 3% through .1% tolerances and result in a hotspot of approximately 250°C
  • RoHS compliant, Pb-Free construction available.

diagram

Space Miser Power Resistors -- AK Series

KRL
STYLE

MIL-
PRF-
26E

WATTAGE RATING
MAXIMUM
WORKING
VOLTAGE
DIELECTRIC
WITHSTAND
MAX.
RESIST.
 IN
OHMS
DIMENSIONS
LEAD AWG
U
V
LENGTH
± .062
DIAMETER
± .032
AK-1 RW-81
1.0
--
58V
500V
3.4KΩ
.250
.094
24 (.020)
AK-2  
1.5
--
82V
500V
4.5KΩ
.312
.094
24 (.020)
AK-3 RW-80
2.25
--
150V
500V
10KΩ
.406
.094
24 (.020)
AK-5  
4.0
5.0
261V
1KV
22KΩ
.560
.158
20 (.032)
AK-5C  
5.0
6.5
181V
1KV
32KΩ
.500
.250
18 (.040)
AK-6  
6.0
7.0
295V
1KV
45KΩ
.625
.250
18 (.040)
AK-10  
7.0
10.0
444V
1KV
90KΩ
.875
.312
18 (.040)
Derating Curve

Wirewound Power Resistors -- P & C Series

KRL
STYLE
MIL-PRF-26 MIL-PRF-39007 WATTAGE 
MAXIMUM
WORKING
VOLTAGE
DIELECTRIC
WITHSTAND
VOLTAGE
MAX.
RESIST.
IN OHMS
DIMENSIONS LEAD AWG
RATING LENGTH DIAMETER
U
V
± .062
(± .010)
± .032
(± .010)
  C-1/4    
.5
1.0
58V
500V
3.4KΩ
.250
 
.094
 
24 (.020)
(P-1/2) C-1/2    
.75
1.2
73V
500V
4.5KΩ
.280
(.300)
.094
(.120)
24 (.020)
(P-1A) C-1A RW-70  
1.0
1.5
122V
500V
10KΩ
.406
(.425)
.094
(.120)
24 (.020)
  C-1B    
1.1
1.6
139V
500V
12KΩ
.530
 
.094
 
24 (.020)
(P-1C) C-1C    
1.0
1.5
87V
500V
5KΩ
.330
(.360)
.094
(.120)
24 (.020)
  C-1D    
3.25
4.5
406V
500V
38KΩ
.700
 
.110
 
20 (.032)
  C-2    
1.5
2.0
141V
1KV
10KΩ
.385
 
.187
 
20 (.032)
  C-2A RW-79  
3.0
3.75
257V
1KV
22KΩ
.560
 
.187
 
20 (.032)
  C-2B   RWR-71
3.25
4.75
444V
1KV
42KΩ
.812
 
.187
 
20 (.032)
  C-2C    
3.0
3.5
181V
1KV
32KΩ
.500
 
.250
 
20 (.032)
  C-2D RW-69  
2.5
3.0
212V
1KV
20KΩ
.500
 
.210
 
20 (.032)
  C-2E    
3.0
3.75
261V
1KV
22KΩ
.560
 
.158
 
20 (.032)
  C-2F    
2.5
3.0
210V
1KV
20KΩ
.490
 
.158
 
20 (.032)
  C-3    
4.0
5.5
295V
1KV
45KΩ
.625
 
.250
 
20 (.032)
  C-4    
5.0
6.0
444V
1KV
65KΩ
.875
 
.250
 
20 (.032)
  C-5 RW-74 RWR-74
5.0
6.0
444V
1KV
90KΩ
.875
 
.312
 
18 (.040)
  C-6 RW-67  
6.0
6.5
488V
1KV
100KΩ
1.000
 
.312
 
18 (.040)
  C-7    
7.0
8.0
730V
1KV
100KΩ
1.200 ±.094
 
.312 ±.062
 
18 (.040)
  C-7A RW-55  
7.5
9.0
800V
1KV
150KΩ
1.375 ±.094
 
.375 ±.062
 
18 (.040)
  C-10A RW-78 RWR-78
10.0
12.0
1KV
1KV
275KΩ
1.780 ±.094
  
.375 ±.062
 
18 (.040)

P =  Molded ( )    C = Coated

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