Terminals: Solder-coated axial.
RoHS solder composition is 96%
Sn, 3.5% Ag, 0.5% Cu
Derating
Linearly from
100% @ +25°C to
F E A T ꢀ ꢁ E S
• Rugged vitreous enamel coating
withstands high humidity and
temperature cycling.
• Durable construction, recom-
mended for industrial applica-
tions where reliability is para-
mount.
20 Series
Vitreous Enamel Conformal Axial Terminal
Wirewound, 5% Tolerance Standard
0% @ +350°C.
Electrical
1.5 in. / 38.1mm
L
D
Tolerance: ±5% standard.
Other tolerances available.
Power rating: Based on 25°C
free air rating (other wattages
available).
• All-welded construction.
• Flame resistant lead free vitre-
ous enamel coating.
• RoHS compliant; Add “E” suffix
to part number to specify.
Dimensions (in. / mm)
Max.
Series Wattage Ohms
Length*
Diam.* Volt.** Lead ga.
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
21
22
23
25
27
20
1
2
3
5
7
1.0-3.0K 0.406 / 10.3 0.156 / 4.0
1.0-3.0K 0.406 / 10.3 0.219 / 5.6
0.1-10K 0.500 / 12.7 0.220 / 5.6
0.1-28K 1.000 / 25.4 0.276 / 7.0
0.1-25K 1.250 / 31.8 0.394 / 10.0
0.1-100K 1.844 / 46.8 0.394 / 10.0
75
65
135
330
450
720
24
20
20
20
20
20
S P E C ꢂ F ꢂ C A T ꢂ O N S
Material
Coating: Conformal
lead free vitreous enamel.
Core: Ceramic.
10
12.5 watt size available on special order
O r d e r i n g i n f O r m at i O n
*For units below 1Ω, add 15% to body diameter, 10% to body length.
**Maximum Voltage is based on Ohm’s Law [V=√P*R] as limited by the resistance value
RoHS Compliant
of specified product
2 1 J R 1 0 E
Check product
availability at
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.
20 Series
Wattage Tolerance Resistance Value
Vitreous Enamel 1 = 1W J = 5%
R10 = 0.10Ω
1R0 = 1.0Ω
10R =10.0Ω
Axial Lead
Wirewound
2
ohmite.com
3
5
250 =
250Ω
7
1K0 = 1,000Ω
4K5 = 4,500Ω
50K = 50,000Ω
0 = 10W
S ta n d a r d p a r t n u m b e r S f O r 2 0 S e r i e S
Wattage
Wattage
Wattage
Part No.
Prefix
Suffix
Part No.
Prefix
Suffix
Part No.
Prefix
Suffix
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
62
68
75
–––62R
–––68R
–––75R
–––82R
–––100
–––120
–––125
–––150
–––180
–––200
–––220
–––225
–––250
–––270
–––300
–––330
–––350
–––390
–––400
–––450
–––470
–––500
–––560
–––600
–––680
–––750
–––800
–––820
–––900
–––1K0
–––1K1
–––1K2
–––1K5
1,800
2,000
2,200
2,500
2,700
3,000
3,300
3,500
3,900
4,000
4,500
4,700
5,000
6,000
6,800
7,000
7,500
8,000
9,000
10,000
12,000
13,000
15,000
17,000
20,000
22,000
25,000
30,000
33,000
35,000
40,000
50,000
–––1K8
–––2K0
–––2K2
–––2K5
–––2K7
–––3K0
–––3K3
–––3K5
–––3K9
–––4K0
–––4K5
–––4K7
–––5K0
–––6K0
–––6K8
–––7K0
–––7K5
–––8K0
–––9K0
–––10K
–––12K
–––13K
–––15K
–––17K
–––20K
–––22K
–––25K
–––30K
–––33K
–––35K
–––40K
–––50K
82
100
120
125
150
180
200
220
225
250
270
300
330
350
390
400
450
470
500
560
600
680
750
800
820
900
1,000
1,100
1,200
1,500
1
––– 1R0
1.5 –––1R5
–––2R0
2.2 –––2R2
2
3
4
5
–––3R0
–––4R0
–––5R0
7.5 –––7R5
10
–––10R
–––12R
–––15R
–––18R
–––20R
–––22R
–––25R
–––27R
–––30R
–––33R
–––35R
–––39R
–––40R
–––47R
–––50R
–––56R
12
15
18
20
22
25
27
30
33
35
39
40
47
50
56
= 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.
20
Ohmite Mfg. Co. 1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
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