Surface Mount
Power
Standard
pedestal mount
Recessed-base
mount
RC Series: carbon composition (1/4 & 1/2 watt)
RC Series: ceramic composition (above 1/2 watt)
RF Series: metal film
RW Series: wirewound
RP Series: power film
RM Series: high voltage thick film
Flexible
J-bend
F e at u r e s
• Tolerance 1%, 5%, 10%, depending on construction
• Twelve wattage ratings
• Seven package sizes
• Two mounting designs to accommodate your soldering process
• Five power resistor technologies to optimize your operating performance:
1. Carbon and Ceramic composition for surge and low inductance
2. Metal film for high ohmic value and low T.C.
3. Wire element for inrush current combined with low ohmic values.
Resistance values as low as 0.005Ω
4. Power film for high ohmic value and high wattage
5. High Voltage thick film for high voltage applications
• Flexible J-bend terminations
• Working Temperature Range: -55°C to +150°C
S ER I E S S P E C I F I C AT I O N S
Part Number
Power Maximum
(watts)* voltage
1% tol.
Resistance range
Temp. Coefficient
5% tol.
10% tol.
0.1Ω–1Ω 1Ω–10Ω
10Ω+
RC0S2CA–––––
0.25
250
—
RW0S6BB–––––
0.6
50
0.010Ω–1K
50
0.005Ω–1K
RC0R5DB–––––
RF0S8BA–––––
0.50
350
—
—
Quantity
per reel
±400
±400
1000V
16mm
1500
0.005Ω–1K
±90
±50
±20
1000V
12mm
2500
0.005Ω–1K
±90
2.2Ω–20M
±400
±400
RP1S3CA–––––
1.25
350
RP1S5CB–––––
RP1R5CB–––––
1.5
350
75
0.005Ω–1.5K
0.005Ω–1.5K
±90
±250
±250
1000V
16mm
1500
RW2S0CB–––––
RW2R0CB–––––
2.0
100
0.005Ω–5K
0.005Ω–5K
±90
±50
±20
1000V
16mm
1000
RP2S0DA–––––
RP2R0DA–––––
2.0
500
—
—
±250
±250
1000V
24mm
1000
RW2S0DA–––––
RW2R0DA–––––
2.0
100
0.005Ω–5K
±90
±50
±20
1000V
24mm
1000
RP2R5DB–––––
RW3R0DB–––––
2.5
500
—
±250
±250
1000V
24mm
1000
RP3R0EA–––––
3.0
3.0
750
—
±250
±250
1000V
32mm
750
—
—
±50
RC1R0EA–––––
RW1S5CA–––––
RW3R5EA–––––
RM0R7EA–––––
1.0
1.5
3.5
0.75
500
—
1Ω–10M
—
±200
±100
—
±250
—
—
1Ω–1M
1Ω–1M
1Ω–1M
0.005Ω–5K
1Ω–1M
—
200
0.005Ω–13K
0.005Ω–13K
±90
350
0.005Ω–25K
0.005Ω–25K
±90
2500
±50
3.3-100K (10% tol only)
—
1KΩ–1000M
1Ω–1M
1KΩ–1000M
*25°C ambient. E24 values standard; contact Ohmite for custom values.
32
±100
±250
±50
±50
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
±20
-1300
±250
±250
±20
±20
1000V
1000V
1000V
1000V
1000V
1000V
1000V
1000V
1000V
12mm
12mm
16mm
32mm
16mm
16mm
24mm
32mm
32mm
1000
350
10Ω–1M
±100
24mm
1.0
RF1S0CA–––––
—
1000V
200
1.0
—
—
0.8
RW1S0BA–––––
1Ω–5M
Tape Size
13” reels
—
—
2.2Ω–5.6M
Dielectric
Withstanding
2000
2000
1500
750
1500
1000
1000
750
750
(continued)
Surface Mount Power
p e r fo r m a nc e d a t a
ALL models:
Immersion
(260°C for Momentary
10 sec.)
Overload
±3.0%+.05Ω 6.3x rated power for 5 sec.
±0.1%+.05Ω 2x rated power for 0.1 sec.
±0.1%+.05Ω 5x rated power for 5 sec.
±0.5%+.05Ω 2x rated power for 0.1 sec.
±0.1%+.05Ω 5x rated power for 5 sec.
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
TCR
300
Typical TCR for
less than 0.1Ω SMD
resistors (PPM/°C)
Temperature °C
300
100
80
60
40
20
0
0
25
50
75 100 125
Ambient Temperature, ϒC
150
Recommended Solder Profile
500
400
Derating
Percent Rated Power
Temp. cycle Load Life
(-55°C to 125°C, (1000 hours
Construction
1000 cycles)
at 25°C)
RC Carbon/Ceramic Comp.
±4.0%+.05Ω ±10.0%+.05Ω
RF Metal Film
±0.5%+.05Ω ±0.5%+.05Ω
RW Wirewound
±0.5%+.05Ω ±3.0%+.05Ω
RP Power Film
±3.0%+.05Ω ±5.0%+.05Ω
RN Wirewound, Non-inductive ±0.5%+.05Ω ±3.0%+.05Ω
200
10 sec.
200
Soldering: min. 220°C, max. 60 sec.
60 sec.
Preheating
Max. Temp.: 260°C ±5°, 10 sec.
(RC only: 250°C ±5°, 3 sec.)
Cooling
120 sec.
150
100
50
0
100
Preheating: 145°C ±15°, max. 120 sec.
Soldering
250
0
50
100 150 200
Time (sec.)
250
0.02 0.04 0.06 0.08 0.10
Ohms
200
Package limit hot spot temperature rise
180
Alumina
Temperature rise, ϒC
160
FR4
140
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.
120
100
80
FR4: 0.062 in. thick; 0.062
in. traces
60
40
Solder joint
20
100%
200%
Percent Rated power
300%
Alumina: 0.040 in. thick;
0.010 in. traces
Molding material rated at
205°C continuous.
R C s e r i e s : b a k e p r oc e d u r e
RC SERIES ONLY
A. Heat Treatment
110°C ±10°C
15 hours
B. Frequency of
heat treatment
1 time only
C. Cautions
Solderability: may be affected due to oxidization of lead wire
Resistance value: some units may not completely recover to original value.
Soldering heat: some treated product may have substantial resistance change during soldering operation. It is recommended that
parts be tested to evaluate soldering heat effects.
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
33
Surface Mount Power
d im e nsions
(in./mm)
M
L
B
A
N
P
J
E
Note 2
K =0.006 Ref.
O
Note 1
G
H
F =0.005 ±.001
D
Packages
A
B
BA (in.) 0.246±.020
0.136±.005
(mm) 6.248±.508
3.454±.127
CA (in.) 0.394±.020
0.159±.005
(mm) 10.008±.508
4.039±.127
CB (in.) 0.407±.020
0.226±.005
(mm) 10.338±.508
5.74±.127
DA (in.) 0.455±.020
0.240±.005
(mm) 11.557±.508
6.096±.127
DB (in.) 0.625±.020
0.273±.005
(mm) 15.875±.508
6.934±.127
EA (in.) 0.811±.020
0.273±.005
(mm) 20.599±.508
6.934±.127
BB (in.) 0.202±.010
0.10±.010
(mm) 5.140±.508
2.54±.127
I
Recommended
for glue dot
application
C
Package Outline Dimensions
C
D
G
0.133 REF
0.110±.010 0.047 ±0.020
3.378 REF
2.794±.254 1.194 ±0.508
0.156 REF
0.220±.010
0.062 Nom.
3.962 REF
5.588±.254
1.575 Nom.
0.222 REF
0.260±.010
0.062 Nom.
5.639 REF
6.604±.254
1.575 Nom.
0.236 REF
0.260±.010
0.062 Nom.
5.994 REF
6.604±.254
1.575 Nom.
0.268 REF
0.417±.010
0.062 Nom.
6.807 REF
10.592±.254
1.575 Nom.
0.268 REF
0.572±.010
0.093 Nom.
6.807 REF
14.529±.254
2.362 Nom.
0.095 REF
0.079±.010
0.050 Nom.
2.41 REF
2.00±.254
1.280 Nom.
I
0.054±.012
1.372±.305
0.064±.012
1.626±.305
0.084±.012
2.134±.305
0.115±.012
2.921±.305
0.115±.012
2.921±.305
0.115±.012
2.921±.305
0.065±.012
1.640±.305
J
0.136±.005
3.454±.127
0.159±.005
4.038±.127
0.222±.005
5.639±.127
0.226±.005
5.740±.127
0.226±.005
5.740±.127
0.273±.005
6.934±.127
0.135±.005
3.420±.127
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.
L
0.150
3.81
0.256
6.50
0.276
7.01
0.317
8.05
0.474
12.040
0.611
15.52
0.078
1.98
PC Board Land Pattern
M
N
O
P
0.346 0.098 0.126 0.050
8.79
2.49
3.20
1.27
0.524 0.134 0.126 0.060
13.31
3.40
3.20
1.52
0.537 0.131 0.126 0.093
13.64
3.33
3.20
2.36
0.585 0.134 0.155 0.093
14.86
3.40
3.94
2.36
0.742 0.134 0.155 0.093
18.85
3.40
3.94
2.36
1.000 0.195 0.155 0.093
25.4
4.95
3.94
2.36
0.328 0.125 0.126 0.026
8.33
3.18
3.20
0.66
Land pattern dimensions are for reference only
Reel Dimensions
0.795*
20.2 min.
0.059*
1.5 min.
C
0.512 ±.008
13.0 ±.200
1.973
50 min.
A
B
Full
Radius
Tape Start Slot
0.098 / 2.5 min. width
0.394 / 10 min. depth
Measured
at Hub
Size A nom.
B
12mm 13” 0.488" +0.078, –0.00
12.4mm +2.0, –0.0
16mm 13” 0.646" +0.078, –0.00
16.4mm +2.0, –0.0
24mm 13” 0.961" +0.078, –0.00
24.4mm +2.0, –0.0
32mm 13” 1.276" +0.078, –0.00
32.4mm +2.0, –0.0
C max.
0.724"
18.4mm
0.882"
22.4mm
1.196"
30.4mm
1.52"
38.4mm
Quantity
2000 pcs. BA or
2500 pcs. BB
1500 pcs. CA or
1000 pcs. CB
1000 pcs. DA or DB
750 pcs. EA
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).
(continued)
34
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
Surface Mount Power
o r d e r in g info r m a t ion
Component type
R = resistor
Package
B = 12mm
C = 16mm
D = 24mm
E = 32mm
Type of Base
S = standard
R = recessed
Package Modifier
A, B sequential
Tolerance
F = 1%
G = 2%
H = 3%
J = 5%
K =10%
��������������
Component Modifier Wattage
C = carbon/ceramic
Examples:
composition
1S3 = 1.25W
F = film
2S0 or 2R0 = 2.0W
P = power film
3R5 = 3.5W
W = wire
N = wirewound, non-inductive
T = Tape
and Reel
(optional)
E = RoHS compliant
Resistance Value
Available Jan. 2006
R = Decimal Examples:
K = 1,000
R249 = 0.249 ohms
M = 1,000,000 24R9 = 24.9 ohms
2K49 = 2,490 ohms
(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.)
Standard Part Numbers for Surface Mount Power Resistors
Wirewound
Wirewound
S
S
R
S
R
R
R
S
R
Package style BA
Base: standard
or recessed S
F
F
F
F
F
F
F
F
F
F
F
F
Ohmic value
RC1R0EA–––
RW0S6BB–––
RW3R5EA–––
RW3R0DB–––
RW2R0DA–––
RW2S0DA–––
RW2R0CB–––
RW2S0CB–––
RW1S5CA–––
RW1S0BA–––
Ohmic value
Suffix
Tolerance suffix: F = 1% J = 5% K=10%
–––R005–
J
J
F/J
–––R010– F/J J
J
F
J
J
J
–––R015– F/J J
–––R020– J
J
F
J
J
–––R025– J
–––R027– J
–––R030– F
J
J
J
–––R033– J
–––R036– J
–––R050– F/J
J
J
F
J
J
–––R056– J
–––R075– J
–––R080–
J
J
–––R100– F/J J
J
F
J
J
J
–––R150–
J
J
J
–––R200–
J
J
J
–––R220–
J
–––R240– J
J
–––R300– J
J
–––R330–
J
–––R040–
J
–––R400–
J
–––R470– J
J
J
–––R500– J
J
J
J
–––R750– J
–––1R00– F/J J
J
J
J
–––2R00–
CB
DA
DA
DB
EA
BB
EA
S
S
R
S
R
R
R
S
R
3.30
4.70
5.00
5.60
6.80
7.50
10.00
15.00
20.00
22.00
24.90
33.00
36.00
47.00
50.00
51.00
68.00
82.00
100.00
120.00
180.00
300.00
470.00
1K
4.7K
5K
Part No.
Prefix
Suffix
Tolerance suffix: F = 1% J = 5% K=10%
–––3R30–
K
–––4R70–
K
–––5R00–
F
–––5R60– J
–––6R80–
K
–––7R50–
J
F
–––10R0– J
J
J
F
K
–––15R0– J
J
F
K
–––20R0–
J
–––22R0–
F
K
–––24R9–
F
–––33R0–
F
K
–––36R0–
F
–––47R0– J
J
F
K
–––50R0–
J
–––51R0– J
–––68R0–
K
–––82R0–
J
–––100R–
J
F
K
–––120R–
J
–––180R– J
–––300R– J
–––470R–
J
–––1K00–
J
K
–––4K70–
J
–––5K00–
J
0.005
0.010
0.015
0.020
0.025
0.027
0.030
0.033
0.036
0.050
0.056
0.075
0.080
0.100
0.150
0.200
0.220
0.240
0.300
0.330
0.400
0.400
0.470
0.500
0.750
1.00
2.00
Prefix
CB
Wattage 1.0 1.5 2.0 2.0 2.0 2.0 3.0 3.5 0.6 1.0
Wattage 1.0 1.5 2.0 2.0 2.0 2.0 3.0 3.5 0.6 1.0
Part No.
CA
RC1R0EA–––
EA
RW0S6BB–––
BB
RW3R5EA–––
EA
RW3R0DB–––
DB
RW2R0DA–––
DA
RW2S0DA–––
DA
RW2R0CB–––
CB
RW2S0CB–––
CB
RW1S5CA–––
CA
RW1S0BA–––
Package style BA
Base: standard
or recessed S
rev 1/20-1
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35
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