Ohmite Mfg. Co.
Ohmite Mfg. Co.
1600 Golf Rd., Suite 850, Rolling Meadows, IL 60008 • Tel. 1-866-9-OHMITE • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
7
FEATURES
• Tolerance 1%-5% standard
• Eleven wattage ratings
• Six package sizes
• Two mounting designs to
accommodate your soldering
process
• Five power resistor
technologies to optimize your
operating performance:
1.
Carbon and Ceramic compo-
sition for high inrush current,
low inductance
2.
Metal film for high ohmic value
and low T.C.
3.
Wirewound for inrush current
combined with low ohmic
values, down to 0.005
Ω
and
close toleance for low T.C.,
low ohm values, high inrush or
tight tolerance
4.
Power film for high ohmic
value and high wattage
5.
Thick film for high voltage
applications
• Flexible J-bend terminations
Surface Mount Power Resistors
RC Series: carbon/ceramic composition
RF Series: metal film
RW Series: wirewound
RP Series: power film
RM Series: thick film
PERFORMANCE SPECIFICATIONS
Power
Maximum
Resistance range
Temp. Coefficient
Dielectric
Tape Size
Quantity
Part Number*
(watts)*
voltage
1% tol.
5% tol.
0.1
Ω
–1
Ω
1
Ω
–10
Ω
10
Ω
+
Withstanding
13” reels
per reel
RC0S2CA–––––
0.25
250
—
2.2
Ω
–5.6M
—
±400
±400
1000V
16mm
1500
RC0R5DB–––––
0.50
350
—
2.2
Ω
–20M
—
±400
±400
1000V
24mm
1000
RF0S8BA–––––
0.8
200
1
Ω
–5M
0.3
Ω
–10M
—
±100
±100
1000V
12mm
2000
RW1S0BA–––––
1.0
50
0.005
Ω
–1K
0.005
Ω
–1K
±90
±50
±20
1000V
12mm
2000
RF1S0CA–––––
1.0
350
10
Ω
–1M
1
Ω
–10M
—
±200
±100
1000V
16mm
1500
RC1R0EA–––––
1.0
500
3.3-100K(10% tol only)
-1300
1000V
32mm
750
RP1S3CA–––––
1.25
350
—
1
Ω
–1M
—
±250
±250
1000V
16mm
1500
RP1S5CA–––––
1.5
75
0.005
Ω
–1.5K
0.005
Ω
–1.5K
±90
±250
±250
1000V
16mm
1500
RP1S5CB–––––
1.5
350
—
1
Ω
–1M
—
±250
±250
1000V
16mm
1000
RP1R5CB–––––
RW2S0CB–––––
2.0
100
0.005
Ω
–5K
0.005
Ω
–5K
±90
±50
±20
1000V
16mm
1000
RW2R0CB–––––
RP2S0DA–––––
2.0
500
—
1
Ω
–1M
—
±250
±250
1000V
24mm
1000
RP2R0DA–––––
RW2S0DA–––––
2.0
100
0.005
Ω
–5K
0.005
Ω
–5K
±90
±50
±20
1000V
24mm
1000
RW2R0DA–––––
RP2R5DB–––––
2.5
500
—
1
Ω
–1M
—
±250
±250
1000V
24mm
1000
RW3R0DB–––––
3.0
200
0.005
Ω
–13K
0.005
Ω
–13K
±90
±50
±20
1000V
24mm
1000
RP3R0EA–––––
3.0
750
—
1
Ω
–1M
—
±250
±250
1000V
32mm
750
RW3R5EA–––––
3.5
350
0.005
Ω
–25K
0.005
Ω
–25K
±90
±50
±20
1000V
32mm
750
RM0R7EA–––––
0.75
2500
1K
Ω
–1000M
1K
Ω
–1000M
—
—
±50
1000V
32mm
750
* At 25°C ambient
Flexible
J-bend
Standard
pedestal mount
Recessed-base
mount
Dimensions (in. /
mm
)
Series
Wattage
Ohms
Length
Height
Width
Voltage
RC0S2CA
RC0S2CA
0.25
0.25
2.2–5.6M
2.2–5.6M
0.394 /
0.394 /
10.01
10.01
0.159 /
0.159 /
4.04
4.04
0.159 /
0.159 /
4.04
4.04
250
250
RC0R5DB
0.50
2.2–20M
0.625 /
15.88
0.226 /
5.74
0.273 /
6.93
350
RM0R7EA
RM0R7EA
0.75
0.75
1K-900M
1K-900M
0.811 /
0.811 /
20.60
20.60
0.273 /
0.273 /
6.93
6.93
0.273 /
0.273 /
6.93
6.93
2500
2500
RF0S8BA
0.80
0.30–10M
0.246 /
6.25
6.25 6.25
0.136 /
3.45
0.136 /
3.45
200
RW1S0BA
RW1S0BA
1.00
1.00
0.005–1K
0.005–1K
0.246 /
0.246 /
6.25
6.25
6.25 6.25
0.136 /
0.136 /
3.45
3.45
0.136 /
0.136 /
3.45
3.45
50
50
RF1S0CA
1.00
1.0–10M
0.394 /
10.01
0.159 /
4.04
0.159 /
4.04
350
RC1R0EA
RC1R0EA
1.00
1.00
3.3–100K
3.3–100K
0.811 /
0.811 /
20.60
20.60
0.273 /
0.273 /
6.93
6.93
0.273 /
0.273 /
6.93
6.93
500
500
RP1S3CA
1.25
1.0–1M
0.394 /
10.01
0.159 /
4.04
0.159 /
4.04
350
RW1S5CA
RW1S5CA
1.50
1.50
0.005–1.5K
0.005–1.5K
0.394 /
0.394 /
10.01
10.01
0.159 /
0.159 /
4.04
4.04
0.159 /
0.159 /
4.04
4.04
75
75
RP1S5CB
1.50
1.0–1M
0.407 /
10.34
0.222 /
5.64
0.226 /
5.74
350
RP1R5CB
RP1R5CB
1.50
1.50
1.0–1M
1.0–1M
0.407 /
0.407 /
10.34
10.34
0.222 /
0.222 /
5.64
5.64
0.226 /
0.226 /
5.74
5.74
350
350
RW2S0CB
2.00
0.005–5K
0.407 /
10.34
0.222 /
5.64
0.226 /
5.74
100
RW2R0CB
RW2R0CB
2.00
2.00
0.005–5K
0.005–5K
0.407 /
0.407 /
10.34
10.34
0.222 /
0.222 /
5.64
5.64
0.226 /
0.226 /
5.74
5.74
100
100
RP2S0DA
2.00
1.0–1M
0.455 /
11.56
0.226 /
5.74
0.24 /
6.10
500
RP2R0DA
RP2R0DA
2.00
2.00
1.0–1M
1.0–1M
0.455 /
0.455 /
11.56
11.56
0.226 /
0.226 /
5.74
5.74
0.24 /
0.24 /
6.10
6.10
500
500
RW2S0DA
2.00
0.005–5K
0.455 /
11.56
0.226 /
5.74
0.24 /
6.10
100
RW2R0DA
RW2R0DA
2.00
2.00
0.005–5K
0.005–5K
0.455 /
0.455 /
11.56
11.56
0.226 /
0.226 /
5.74
5.74
0.24 /
0.24 /
6.10
6.10
100
100
RP2R5DB
2.50
1.0–1M
0.655 /
16.64
0.226 /
5.74
0.273 /
6.93
500
RW3R0DB
RW3R0DB
3.00
3.00
0.005–13K
0.005–13K
0.625 /
0.625 /
15.88
15.88
0.226 /
0.226 /
5.74
5.74
0.273 /
0.273 /
6.93
6.93
200
200
RP3R0EA
3.00
1.0–1M
0.811 /
20.60
0.273 /
6.93
0.273 /
6.93
750
RW3R5EA
RW3R5EA
3.50
3.50
0.005–25K
0.005–25K
0.811 /
0.811 /
20.60
20.60
0.273 /
0.273 /
6.93
6.93
0.273 /
0.273 /
6.93
6.93
350
350
MILITARY GRADE VERSIONS AVAILABLE: CONSULT FACTORY
0.02
500
400
300
200
100
Ohms
0.04 0.06 0.08 0.10
Typical TCR for
less than 0.1Ω SMD
resistors (PPM/°C)
(continued)
8
Ohmite Mfg. Co.
1600 Golf Rd., Suite 850, Rolling Meadows, IL 60008 • Tel. 1-866-9-OHMITE • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
Ohmite Mfg. Co.
Package Outline Dimensions
PC Board Land Pattern
Packages
A
B
C
D
G
I
J
L
M
N
O
P
BA
(in.)
.246±.020
.136±.005
.133 REF
.110±.010
.047 Nom.
.054±.012
.136±.005
.150
.346
.098
.126
.050
(mm)
6.248±.508
3.454±.127
3.378 REF
3.378 REF 3.378 REF
2.794±.254
2.794±.254 2.794±.254
1.194 Nom.
1.372±.305
1.372±.305 1.372±.305
3.454±.127
3.81
8.79
2.49
2.49 2.49
3.20
1.27
1.27 1.27
CA
(in.)
.394±.020
.159±.005
.156 REF
.220±.010
.062 Nom.
.078±.012
.159±.005
.256
.524
.134
.126
.060
(mm)
10.008±.508
4.039±.127
3.962 REF
3.962 REF 3.962 REF
5.588±.254
5.588±.254 5.588±.254
1.575 Nom.
1.981±.305
1.981±.305 1.981±.305
4.038±.127
6.50
13.31
3.40
3.40 3.40
3.20
1.52
CB
(in.)
.407±.020
.226±.005
.222 REF
.260±.010
.062 Nom.
.084±.012
.222±.005
.276
.537
.131
.126
.093
(mm)
10.338±.508
5.74±.127
5.639 REF
5.639 REF 5.639 REF
6.604±.254
6.604±.254 6.604±.254
1.575 Nom.
2.134±.305
2.134±.305 2.134±.305
5.639±.127
7.01
13.64
3.33
3.33 3.33
3.20
2.36
2.36 2.36
DA
(in.)
.455±.020
.240±.005
.236 REF
.260±.010
.062 Nom.
.143±.012
.226±.005
.317
.585
.134
.155
.093
(mm)
11.557±.508
6.096±.127
5.994 REF
5.994 REF 5.994 REF
6.604±.254
6.604±.254 6.604±.254
1.575 Nom.
3.632±.305
3.632±.305 3.632±.305
5.740±.127
8.05
14.86
3.40
3.40 3.40
3.94
2.36
DB
(in.)
.625±.020
.273±.005
.268 REF
.417±.010
.062 Nom.
.143±.012
.226±.005
.474
.742
.134
.155
.093
(mm)
15.875±.508
6.934±.127
6.807 REF
6.807 REF 6.807 REF
10.592±.254
10.592±.254 10.592±.254
1.575 Nom.
3.632±.305
3.632±.305 3.632±.305
5.740±.127
12.040
18.85
3.40
3.40 3.40
3.94
2.36
EA
(in.)
.811±.020
.273±.005
.268 REF
.572±.010
.093 Nom.
.143±.012
.273±.005
.611
1.000
.195
.155
.093
(mm)
20.599±.508
6.934±.127
6.807 REF
6.807 REF 6.807 REF
14.529±.254
14.529±.254 14.529±.254
2.362 Nom.
3.632±.305
3.632±.305 3.632±.305
6.934±.127
15.52
25.4
4.95
4.95 4.95
3.94
2.36
J
I
C
B
K=0.006 Ref.
D
A
E
GH
Note 1 F=0.005 ±.001
Note 2
L
O
M
P
N
Recommended
for glue dot
application
Note 1:
Packages BA and CA are only available with a pedestal base. Packages CB and DA are available in either pedestal or recessed base. Packages DB and EA are only available in a recessed base.
Note 2:
Test point is .020 above PCB.
Note 3:
Tape and reel dimensions per EIA 481 A except “EA” size which is 12 mm component pitch versus 16mm pitch.
* For units where four (4) terminal Kelvin connections are required.
Temp. cycle
Load Life
Immersion
(-55°C to 125°C,
(1000 hours
(260°C for
Momentary
Construction
1000 cycles)
at 25°C)
10 sec.)
Overload
RC
Carbon/Ceramic Composition
±4.0%+.05
Ω
±10.0%+.05
Ω
±3.0%+.05
Ω
6.3x rated power for 5 sec.
RF
Metal Film
±0.5%+.05
Ω
±0.5%+.05
Ω
±0.1%+.05
Ω
2x rated power for 0.1 sec.
RW
Wirewound
±0.5%+.05
Ω
±3.0%+.05
Ω
±0.1%+.05
Ω
5x rated power for 5 sec.
RP
Power Film
±3.0%+.05
Ω
±5.0%+.05
Ω
±0.5%+.05
Ω
2x rated power for 0.1 sec.
ALL models:
Leaching
(260°C Solder immersion, 60 sec.).......................
No visible leaching
Thermal Shock
(Units at -55°C, then rated power applied)..
No mechanical damage
Flammability
.........................................................................
UL Material rating, UL94V0
Size
A nom.
B
C max.
Resistor count
12mm
13”
0.488 +0.078, –0.00 /
12.4 +2.0, –0.0
0.724 /
18.4
18.4 18.4
2000 pcs. BA
16mm
13”
0.646 +0.078, –0.00 /
16.4 +2.0, –0.0
16.4 +2.0, –0.0 16.4 +2.0, –0.0
0.882 /
22.4
22.4 22.4
1500 pcs. CA or 1000 pcs. CB
24mm
13”
0.961 +0.078, –0.00 /
24.4 +2.0, –0.0
24.4 +2.0, –0.0 24.4 +2.0, –0.0
1.196 /
30.4
30.4 30.4
1000 pcs. DA or DB
32mm
13”
1.276 +0.078, –0.00 /
32.4 +2.0, –0.0
32.4 +2.0, –0.0 32.4 +2.0, –0.0
1.52 /
38.4
38.4 38.4
750 pcs. EA
REEL DIMENSIONS
All reels are compatible with major pick-and-place machines and made in accordance with EIA 481 A (except
EA size, which is 12mm component pitch versus 16mm pitch).
A
0.795*
20.2
min.
0.512 ±.008
13.0
±
.200
C
B
1.973
50
min.
0.059*
1.5
min.
Full
Radius
Tape Start Slot
Measured
at Hub
0.098 /
2.5
min. width
0.394 /
10
min. depth
The temperature rise graph data was obtained by a
selection of test substrate size and trace width for
each resistor size to limit operating temperatures to
safe values.
The operating temperature safe rises are either
100°C substrate temperature rise or 180°C package
hot spot temperature rise at 25°C ambient.
FR4: 0.062 in. thick; 0.062 in. traces
Alumina: 0.040 in. thick; 0.010 in. traces
Engineering data available upon request.
100% 200% 300%
200
180
160
140
120
100
80
60
40
20
Temperature rise
Rated power
Alumina
Solder joint
FR4
Package limit hot spot temperature rise
EXTENSIVE ENVIRONMENTAL TESTS ENSURE OHMITE PERFORMANCE
Ohmite Mfg. Co.
Ohmite Mfg. Co.
1600 Golf Rd., Suite 850, Rolling Meadows, IL 60008 • Tel. 1-866-9-OHMITE • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
9
ORDERING INFORMATION
STOCK VALUES AVAILABLE
RW1S0BA
–––
RW1S5CA
–––
RW2S0CB
–––
RW2R0CB
–––
RW2S0DA
–––
RW2R0DA
–––
RW3R0DB
–––
RW3R5EA
–––
BA
CA
CB
CB
DA
DA
DB
EA
S
S
S
R
S
R
R
R
1.0
1.5
2.0
2.0
2.0
2.0
3.0
3.5
Wirewound
1.00
–––
1R00
–
F/J
J
J
J
J
2.00
–––
2R00
–
2.20
–––
2R20
–
3.01
–––
3R01
–
4.99
–––
4R99
–
5.60
–––
5R60
–
J
6.80
–––
6R80
–
7.50
–––
7R50
–
J
10.00
–––
10R0
–
J
J
J
11.00
–––
11R0
–
15.00
–––
15R0
–
J
J
20.00
–––
20R0
–
J
24.90
–––
24R9
–
47.00
–––
47R0
–
J
J
49.90
–––
49R9
–
50.00
–––
50R0
–
J
51.00
–––
51R0
–
J
51.10
–––
51R1
–
68.00
–––
68R0
–
82.00
–––
82R0
–
J
100.00
–––
100R
–
J
120.00
–––
120R
–
J
158.00
–––
158R
–
180.00
–––
180R
–
J
182.00
–––
182R
–
200.00
–––
200R
–
300.00
–––
300R
–
J
392.00
–––
392R
–
470.00
–––
470R
–
J
499.00
–––
499R
–
511.00
–––
511R
–
1K
–––
1K00
–
J
1.82K
–––
1K82
–
2K
–––
2K00
–
4.7K
–––
4K70
–
J
4.99K
–––
4K99
–
5K
–––
5K00
–
J
10K
–––
10K0
–
49.9K
–––
49K9
–
100K
–––
100K
–
360K
–––
360K
–
499K
–––
499K
–
1M
–––
1M00
–
5M
–––
5M00
–
0.005
–––
R005
–
J
J
F/J
0.010
–––
R010
–
F/J
J
J
F
J
J
J
0.015
–––
R015
–
F/J
J
0.020
–––
R020
–
J
J
F
J
J
0.025
–––
R025
–
J
0.027
–––
R027
–
J
0.030
–––
R030
–
F
J
J
J
0.033
–––
R033
–
J
0.036
–––
R036
–
J
0.050
–––
R050
–
F/J
J
J
F
J
J
0.056
–––
R056
–
J
0.075
–––
R075
–
J
0.080
–––
R080
–
J
J
0.100
–––
R100
–
F/J
J
J
F
J
J
J
0.150
–––
R150
–
J
J
J
0.200
–––
R200
–
J
J
J
0.220
–––
R220
–
J
0.240
–––
R240
–
J
J
0.300
–––
R300
–
J
J
0.330
–––
R330
–
J
0.400
–––
R040
–
J
0.400
–––
R400
–
J
0.470
–––
R470
–
J
J
J
0.500
–––
R500
–
J
J
J
J
0.750
–––
R750
–
J
RW1S0BA
–––
RW1S5CA
–––
RW2S0CB
–––
RW2R0CB
–––
RW2S0DA
–––
RW2R0DA
–––
RW3R0DB
–––
RW3R5EA
–––
Ohmic value
Part No.
Prefix
Suffix
Tolerance suffix:
F = 1% J = 5%
Package style
Base: standard
or recessed
Wattage
BA
CA
CB
CB
DA
DA
DB
EA
S
S
S
R
S
R
R
R
1.0
1.5
2.0
2.0
2.0
2.0
3.0
3.5
Wirewound
Ohmic value
Part No.
Prefix
Suffix
Tolerance suffix:
F = 1% J = 5%
Package style
Base: standard
or recessed
Wattage
(For example, the part number shown is a
wirewound resistor, 3.5 watt, recessed base,
32mm tape size, first case size [A], 1000
ohms 1% tolerance.)
General Notes
Other ratings under development.
Molding material rated at 205°C continuous.
Ohmite reserves the right to make changes
in product specifications and availability without
notice or liability.
The information in this brochure is based
on data obtained by our own research and is
considered accurate. However, no warranty is
expressed or implied regarding the accuracy of
those data, the results to be obtained from the
use thereof, or that any such use will infringe on
any patent. This information is furnished upon
the condition that the person receiving it shall
make their own tests to determine the suitability
thereof for their particular purpose.
Tolerance suffix:
Tolerance suffix:
Tolerance suffix:
Tolerance suffix:
Component type
R = resistor
Component
Modifier
C = carbon/ceramic
composition
F = film
P = power film
W = wire
M = thick film
Wattage
Examples:
1S3 = 1.25W
2S0 or 2R0 = 2.0W
3R5 = 3.5W
Type of Base
S = standard
R = recessed
Package
B = 12mm
C = 16mm
D = 24mm
E = 32mm
Package Modifier
A, B sequential
Resistance Value
R = Decimal
K = 1,000
M = 1,000,000
Tolerance
B = 0.1%
D = 0.5%
F = 1%
G= 2%
H = 3%
J = 5%
K =10%
Examples:
R249 = 0.249 ohms
24R9 = 24.9 ohms
2K49 = 2,490 ohms
249K = 249,000 ohms
2M49 = 2,490,000 ohms
T = Tape
and Reel
(optional)
