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
RC0S2CA–––––
RC0R5DB–––––
Power Maximum
(watts)* voltage
1% tol.
0.25
250
0.5
350
RW0S6BB–––––
0.6
RF0S8BA–––––
0.8
RW1S0BA–––––
1.0
RF1S0CA–––––
RP1S3CA–––––
50
350
RW1S5CA–––––
1.5
RP2R5DB–––––
RP3R0EA–––––
750
3.5
0.75
0.5Ω–13K
20
3.0
RW3R5EA–––––
0.5Ω–5K
50
3.0
250
350
0.5Ω–25K
1KΩ–10M
2.Ω–5.6M
0.5Ω–1K
—
0.5Ω–1K
1Ω–10M
±40
±40
±40
±40
±90
±50
—
±20
±10
±10
±90
±50
—
±20
±20
±10
3.-10K(10%tolonly)
1Ω–1M
0.5Ω–1.5K
1Ω–1M
—
±90
1Ω–1M
0.5Ω–25K
1KΩ–10M
1-86 9-OHMITE • Int’l 1-847 258-03 • Fax 1-847 5 -7 2 • www.ohmite.com • info@ohmite.com
±250
±250
±250
±250
±90
±50
—
±20
±250
±250
±90
±50
1Ω–1M
0.5Ω–13K
-130
±250
±250
—
1Ω–1M
*25°Cambient. E24valuesstandard;contactOhmiteforcustomvalues.
32
—
—
0.5Ω–5K
—
—
2.Ω–20M
0.5Ω–5K
—
10
2.5
RW3R0DB–––––
0.5Ω–5K
50
2.0
—
—
10
2.0
RW2S0DA–––––
RW2R0DA–––––
0.5Ω–1.5K
350
2.0
RP2S0DA–––––
RP2R0DA–––––
RM0R7EA–––––
75
1.5
RW2S0CB–––––
RW2R0CB–––––
—
10Ω–1M
350
1.25
RP1S5CB–––––
RP1R5CB–––––
—
—
0.5Ω–1K
50
1.0
—
1Ω–5M
20
1.0
RC1R0EA–––––
0.1Ω–1K
50
Resistance range
Temp. Coefficient
5% tol.
10% tol.
0.1Ω–1Ω 1Ω–10Ω
10Ω+
—
±20
±250
±250
±90
±50
—
±90
±20
±250
±250
±50
—
±20
—
±50
Dielectric
Withstanding
Tape Size
13” reels
Quantity
per reel
10V
16mm
10V
24mm
10V
12mm
250
10V
12mm
20
10V
12mm
10V
16mm
10V
32mm
10V
16mm
10V
16mm
10V
16mm
10V
16mm
10V
24mm
10V
24mm
10V
24mm
10V
24mm
10V
32mm
10V
32mm
10V
32mm
150
10
20
150
750
150
150
10
10
10
10
10
10
750
750
750
(continued)
Surface Mount Power
p e r fo r m a nc e d a t a
ALL models:
Leaching (260°CSolderimmersion,60sec.).
Novisibleleaching
Thermal Shock (Unitsat-5°C,thenratedpowerapplied)No
. mechanicaldamage
Flammability.
ULMaterialrating,UL94V0
TCR
300
Typical TCR for
less than 0.1Ω SMD
resistors (PPM/°C)
Temperature °C
300
10
80
60
40
20
0
0
25
50
75
10
125
Ambient Temperature, ϒC
150
Recommended Solder Profile
500
400
Derating
Percent Rated Power
Temp. cycle Load Life Immersion
C
°5-( toC,
°521
01(hours
C
°062( for
Momentary
Construction
01cycles)
atC)
°52
01sec. )
Overload
RC Carbon/CeramicComp. ±4.0%+5Ω
±10.%+5Ω
±
3.0%+5Ω
6.3xratedpowerfor5sec.
RF MetalFilm
±0.5%+Ω
±0.5%+Ω
±
0.1%+5Ω
2xratedpowerfor0.1sec.
RW Wirewound
±0.5%+Ω
±3.0%+5Ω
±
0.1%+5Ω
5xratedpowerfor5sec.
RP PowerFilm
±3.0%+5Ω
±5.0%+Ω
±
0.5%+Ω
2xratedpowerfor0.1sec.
RN Wirewound,Non-inductive
±0.5%+Ω
±3.0%+5Ω
±
0.1%+5Ω
5xratedpowerfor5sec.
200
10 sec.
200
Soldering: min.20°C,max.60sec.
60 sec.
Preheating
Cooling
120 sec.
150
Max. Temp.: 260°C±5°,10sec.
(RConly:250°C±5°,3sec.)
100
50
0
100
Preheating: 145°C±15°,max.120sec.
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
Thetemperaturerisegraph
datawasobtainedbya
selectionoftestsubstrate
sizeandtracewidthfor
eachresistorsizetolimit
operatingtemperaturesto
safevalues.
Theoperatingtemperature
saferisesareeither10°C
substratetemperaturerise
or180°Cpackagehotspot
temperatureriseat25°C
ambient.
120
100
80
FR4: 0.62in.thick;0.62
in.traces
60
40
Solder joint
20
100%
200%
Percent Rated power
300%
Alumina:0.4in.thick;
0.1in.traces
Moldingmaterialratedat
205°Ccontinuous.
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
1-86 9-OHMITE • Int’l 1-847 258-03 • Fax 1-847 5 -7 2 • www.ohmite.com • info@ohmite.com
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.
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
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
Allreelsarecompatiblewithmajorpick-and-placemachines
andmadeinaccordancewithEIAA481 (exceptEAsize,
whichis12mmcomponentpitchversus16mmpitch).
0.098 / 2.5 min. width
0.394 / 10 min. depth
(continued)
34
1-86 9-OHMITE • Int’l 1-847 258-03 • Fax 1-847 5 -7 2 • 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
(Forexample,thepart
numbershownisawirewoundresistor,3.5watt,
recessedbase,32mmtape
size,firstcasesize[A],
10ohms1%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
rev1/201-86 9-OHMITE • Int’l 1-847 258-03 • Fax 1-847 5 -7 2 • www.ohmite.com • info@ohmite.com
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
35
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