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82
20 Series
Vitreous Enamel Conformal Axial
Terminal Wirewound, 5% Tolerance Std.
LD
1.5 in. / 38.1mm
Coating Conformal lead free vitreous enamel
Core Ceramic.
Terminals Solder-coated axial. RoHS solder composition is 96% Sn, 3.5% Ag, 0.5% Cu
Derating Linearly from 100% @ +25°C to 0% @ +350°C
Tolerance ±5% standard; other tolerances available
Power rating Based on 25°C free air rating (other wattages available)
Overload Under 7 watts: 5 times rated wattage for 5 seconds; 7 watts and over: 10 times rated wattage for 5 seconds
Temperature coefficient 1 to 9.99 ohms: ±50 ppm/°C; 10 ohms and over: ±30 ppm/°C
Series Wattage Ohms Max. Voltage*
21 1 1.0-3.0K 75
22 2 1.0-3.0K 65
23 3 0.1-10K 135
25 5 0.1-28K 330
27 7 0.1-25K 450
20 10 0.1-100K 720
12.5 watt size available on special order
*Maximum Voltage is based on Ohm’s Law [V=√(P*R)] as limited by the resis-
tance value of specified product
Series Wattage Length* (max.) Diam.* (max.) Lead ga.
21 1 0.421 / 10.7 0.156 / 4.0 24
22 2 0.421 / 10.7 0.219 / 5.6 20
23 3 0.515 / 13.1 0.220 / 5.6 20
25 5 1.015 / 25.8 0.276 / 7.0 20
27 7 1.265 / 32.1 0.394 / 10.0 20
20 10 1.859 / 47.2 0.394 / 10.0 20
*For units below 1Ω, add 15% to body diameter, 10% to body length.
FEATURES
•Ruggedvitreousenamelcoatingwithstandshigh
humidityandtemperaturecycling.
•Durableconstruction,recommendedforindustrial
applicationswherereliabilityisparamount.
•All-weldedconstruction.
•Flameresistantleadfreevitreousenamelcoating.
•RoHScompliant;Add“E”suffixtopartnumberto
specify.
The20Seriesaxialterminalresistorsareboth
durableandeconomical.Theyhavealltheelectrical
attributesofthemoreexpensive90Seriesresistors,
includingall-weldedconstruction.
Theyofferthedurabilityofaleadfreeconformal
vitreousenamelcoatingandareidealforcomputer,
communicationsandindustrialapplicationsinwhich
cost,quality,andreliabilityarekeyconsiderations.
CHARACTERISTICS
SERIES SPECIFICATIONS
DIMENSIONS
(in./mm max.)
(continued)
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Ohmic value
21J––– 1
22J––– 2
23J––– 3
25J––– 5
27J––– 7
20J––– 10
Wattage
Part No.
Prefix
Suffix
Ohmic value
21J––– 1
22J––– 2
23J––– 3
25J––– 5
27J––– 7
20J––– 10
Wattage
Part No.
Prefix
Suffix
Ohmic value
21J––– 1
22J––– 2
23J––– 3
25J––– 5
27J––– 7
20J––– 10
Wattage
Part No.
Prefix
Suffix
=Standardvalues
=Non-standardvaluessubjecttominimumhandlingchargeperitem
Shadedvaluesinvolveveryfineresistancewireandshouldnotbe
usedincriticalapplicationswithoutburn-inand/orthermalcycling.
0.10 –––R10  
0.13 –––R13  
0.15 –––R15  
0.20 –––R20  
0.25 –––R25  
0.30 –––R30  
0.33 –––R33  
0.50 –––R50  
0.75 –––R75  
1 ––– 1R0     
1.5 –––1R5     
2 –––2R0     
2.2 –––2R2     
3 –––3R0     
4 –––4R0     
5 –––5R0     
7.5 –––7R5     
10 –––10R     
12 –––12R     
15 –––15R     
18 –––18R     
20 –––20R     
22 –––22R     
25 –––25R     
27 –––27R     
30 –––30R     
33 –––33R     
35 –––35R     
39 –––39R     
40 –––40R     
47 –––47R     
50 –––50R     
56 –––56R     
62 –––62R     
68 –––68R     
75 –––75R     
82 –––82R     
100 –––100     
120 –––120     
125 –––125     
150 –––150     
180 –––180     
200 –––200     
220 –––220     
225 –––225     
250 –––250     
270 –––270     
300 –––300     
330 –––330     
350 –––350     
390 –––390     
400 –––400     
450 –––450     
470 –––470     
500 –––500     
560 –––560     
600 –––600     
680 –––680     
750 –––750     
800 –––800     
820 –––820     
900 –––900     
1,000 –––1K0     
1,100 –––1K1     
1,200 –––1K2     
1,500 –––1K5     
1,800 –––1K8     
2,000 –––2K0     
2,200 –––2K2     
2,500 –––2K5     
2,700 –––2K7     
3,000 –––3K0     
3,300 –––3K3   
3,500 –––3K5   
3,900 –––3K9   
4,000 –––4K0   
4,500 –––4K5   
4,700 –––4K7   
5,000 –––5K0   
6,000 –––6K0   
6,800 –––6K8   
7,000 –––7K0   
7,500 –––7K5   
8,000 –––8K0   
9,000 –––9K0   
10,000 –––10K   
12,000 –––12K  
13,000 –––13K 
15,000 –––15K  
17,000 –––17K 
20,000 –––20K  
22,000 –––22K  
25,000 –––25K  
30,000 –––30K 
33,000 –––33K 
35,000 –––35K 
40,000 –––40K 
50,000 –––50K 
21JR10E
20 Series
Vitreous Enamel
Axial Lead
Wirewound
Resistance Value
R10 = 0.10Ω
1R0 = 1.0Ω
10R = 10.0Ω
250 = 250Ω
1K0 = 1,000Ω
4K5 = 4,500Ω
50K = 50,000Ω
Tolerance
J = 5%
RoHS Compliant
Wattage
1= 1W
2
3
5
7
0=10W
ORDERING INFORMATION
Standard part numbers
20 Series
Vitreous Enamel Conformal Axial
Terminal Wirewound, 5% Tolerance Std.