20 Series
Vitreous Enamel Conformal Axial
Terminal Wirewound, 5% Tolerance Std.
FeatureS
Rugged vitreous enamel coating withstands high
The 20 Series axial terminal resistors are both
humidity and temperature cycling.
durable and economical. They have all the electrical
Durable construction, recommended for industrial
attributes of the more expensive 90 Series resistors,
applications where reliability is paramount.
including all-welded construction.
They offer the durability of a lead free conformal
All-welded construction.
vitreous enamel coating and are ideal for computer,
Flame resistant lead free vitreous enamel coating.
communications and industrial applications in which
RoHS compliant; Add E suffix to part number to
cost, quality, and reliability are key considerations.
specify.
SerieS SpeCiFiCationS
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 Ohms Law [V=(P*R)] as limited by the resis-
tance value of specified product
CharaCteriStiCS
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% @ +25C to 0% @ +350C
Tolerance 5% standard; other tolerances available
Power rating Based on 25C 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
DimenSionS
(in./mm max.)
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
1.5 in. / 38.1mm
LD
min.
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 1, add 15% to body diameter, 10% to body length.
(continued)
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20 Series
Vitreous Enamel Conformal Axial
Terminal Wirewound, 5% Tolerance Std.
orDerinG inFormation
Standard part numbers
Wattage Wattage Wattage
Part No. Part No. Part No.
Prefix Prefix Prefix
Suffix Suffix Suffix
0.10 R10 62 62R 1,800 1K8
0.13 R13 68 68R 2,000 2K0
0.15 R15 75 75R 2,200 2K2
0.20 R20 82 82R 2,500 2K5
0.25 R25 100 100 2,700 2K7
0.30 R30 120 120 3,000 3K0
0.33 R33 125 125 3,300 3K3
0.50 R50 150 150 3,500 3K5
0.75 R75
180 180 3,900 3K9
1 1R0 200 200 4,000 4K0
1.5 1R5 220 220 4,500 4K5
2 2R0 225 225 4,700 4K7
2.2 2R2 250 250 5,000 5K0
3 3R0 270 270 6,000 6K0
4 4R0 300 300 6,800 6K8
5 5R0 330 330 7,000 7K0
7.5 7R5 350 350 7,500 7K5
10 10R 390 390 8,000 8K0
12 12R
400 400 9,000 9K0
15 15R 450 450 10,000 10K
18 18R 470 470 12,000 12K
20 20R 500 500 13,000 13K
22 22R 560 560 15,000 15K
25 25R 600 600 17,000 17K
27 27R 680 680 20,000 20K
30 30R 750 750
22,000 22K
33 33R 800 800 25,000 25K
35 35R 820 820 30,000 30K
39 39R
900 900 33,000 33K
40 40R 1,000 1K0 35,000 35K
47 47R 1,100 1K1 40,000 40K
50 50R 1,200 1K2 50,000 50K
56 56R 1,500 1K5
= Standard values Shaded values involve ver y fine resistance wire and should not be
used in critical applications without burn-in and/or thermal cycling.
= Non-standard values subject to minimum handling charge per item
RoHS Compliant
21JR10E
20 Series Wattage Tolerance Resistance Value
Vitreous Enamel 1= 1W J = 5% R10 = 0.10
Axial Lead 2 1R0 = 1.0
Wirewound 3 10R = 10.0
5 250 = 250
7 1K0 = 1,000
0= 10W 4K5 = 4,500
50K = 50,000
rev 6/20-1
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Ohmic value
21J 1
22J 2
23J 3
25J 5
27J 7
20J 10
Ohmic value
21J 1
22J 2
23J 3
25J 5
27J 7
20J 10
Ohmic value
21J 1
22J 2
23J 3
25J 5
27J 7
20J 10