Ohmite: Surface Mount Power Resistors

See PDF for standard part numbers and availability

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RW0S6BB (SMD 2010) Datasheet

Surface Mount Power Resistors

RC series: carbon composition (1/4 watt and 1/2 watt)
RC series: ceramic composition (above 1/2 watt)
RF Series: metal film
RW Series: wirewound
RP Series: power film

Series* Wattage Ohms Dimensions (in. / mm) Voltage

Length Height Width

RC0S2CA 0.25 2.2-5.6M 0.394 / 10.01 0.159 / 4.04 0.159 / 4.04 250

RC0R5DB 0.50 2.2-20M 0.625 / 15.88 0.226 / 5.74 0.273 / 6.93 350

See technical data for the Little Demon Series

RW0S6BB 0.6 0.005-1K 0.202 / 5.14 0.135 / 3.42 0.1 / 2.54 50

RF0S8BA 0.80 1.0-10M 0.246 / 6.25 0.136 / 3.45 0.136 / 3.45 200

RW1S0BA 1.00 0.005-1K 0.246 / 6.25 0.136 / 3.45 0.136 / 3.45 50

RF1S0CA 1.00 1.0-10M 0.394 / 10.01 0.159 / 4.04 0.159 / 4.04 350

RC1R0EA 1.00 3.3-100K 0.811 / 20.60 0.273 / 6.93 0.273 / 6.93 500

See technical data for the OX Series

RP1S3CA 1.25 1.0-1M 0.394 / 10.01 0.159 / 4.04 0.159 / 4.04 350

RW1S5CA 1.50 0.005-1.5K 0.394 / 10.01 0.159 / 4.04 0.159 / 4.04 75

RP1S5CB 1.50 1.0-1M 0.407 / 10.34 0.222 / 5.64 0.226 / 5.74 350

RP1R5CB 1.50 1.0-1M 0.407 / 10.34 0.222 / 5.64 0.226 / 5.74 350

RW2S0CB 2.00 0.005-5K 0.407 / 10.34 0.222 / 5.64 0.226 / 5.74 100

RW2R0CB 2.00 0.005-5K 0.407 / 10.34 0.222 / 5.64 0.226 / 5.74 100

RP2S0DA 2.00 1.0-1M 0.455 / 11.56 0.226 / 5.74 0.24 / 6.10 500

RP2R0DA 2.00 1.0-1M 0.455 / 11.56 0.226 / 5.74 0.24 / 6.10 500

RW2S0DA 2.00 0.005-5K 0.455 / 11.56 0.226 / 5.74 0.24 / 6.10 100

RW2R0DA 2.00 0.005-5K 0.455 / 11.56 0.226 / 5.74 0.24 / 6.10 100

RP2R5DB 2.50 1.0-1M 0.655 / 16.64 0.226 / 5.74 0.273 / 6.93 500

RW3R0DB 3.00 0.005-13K 0.625 / 15.88 0.226 / 5.74 0.273 / 6.93 200

RP3R0EA 3.00 1.0-1M 0.811 / 20.60 0.273 / 6.93 0.273 / 6.93 750

RW3R5EA 3.50 0.005-25K 0.811 / 20.60 0.273 / 6.93 0.273 / 6.93 350

Military grade versions available; contact Ohmite.
*Last two digits designate package size

FEATURES

Tolerance 1%, 5%, 10%, depending on construction
Twelve wattage ratings
Seven package sizes
Two mounting designs to accommodate your soldering process
Four power resistor technologies to optimize your operating performance:
- Carbon and Ceramic composition for surge and low inductance
- Metal film for high ohmic value and low T.C.
- Wire element for inrush current combined with low ohmic values. Resistance values as low as 0.005 ohms
- Power film for high ohmic value and high wattage
Flexible J-bend terminations
Working Temperature Range: -55°C to +150°C

TCR

DERATING

PERFORMANCE SPECIFICATIONS

Part Number	Power (watts)*	Maximum voltage	Resistance range			Temp. Coefficient			Dielectric Withstanding	Tape Size (13" reels)	Quantity per reel
Part Number	Power (watts)*	Maximum voltage	1% tol.	5% tol.	10% tol.	0.1-1Ω	1-10Ω	10+Ω	Dielectric Withstanding	Tape Size (13" reels)	Quantity per reel
RC0S2CA-----	0.25	250	-	-	2.2Ω-K-5.6M	-	±400	±400	1000V	16mm	1500
RC0R5DB-----	0.50	350	-	-	2.2Ω-20M	-	±400	±400	1000V	24mm	1000
See technical data for the Little Demon Series
RW0S6BB-----	0.6	50	0.005Ω-1K	0.005Ω-1K	-	±90	±50	±20	1000V	12mm	2500
RF0S8BA-----	0.8	200	1Ω-5M	-	-	-	±100	±100	1000V	12mm	2000
RW1S0BA-----	1.0	50	0.005Ω-1K	0.005Ω-1K	-	±90	±50	±20	1000V	12mm	2000
RF1S0CA-----	1.0	350	10Ω-1M	1Ω-10M	-	-	±200	±100	1000V	16mm	1500
RC1R0EA-----	1.0	500	3.3-100K(10% tol only)					-1300	1000V	32mm	750
See technical data for the OX Series
RP1S3CA-----	1.25	350	-	1Ω-1M	-	-	±250	±250	1000V	16mm	1500
RP1S5CA-----	1.5	75	0.005Ω-1.5K	0.005Ω-1.5K	-	±90	±250	±250	1000V	16mm	1500
RP1S5CB----- RP1R5CB-----	1.5	350	-	1Ω-1M	-	-	±250	±250	1000V	16mm	1000
RW2S0CB----- RW2R0CB-----	2.0	100	0.005Ω-5K	0.005Ω-5K	-	±90	±50	±20	1000V	16mm	1000
RP2S0DA----- RP2R0DA-----	2.0	500	-	1Ω-1M	-	-	±250	±250	1000V	24mm	1000
RW2S0DA----- RW2R0DA-----	2.0	100	0.005Ω-5K	0.005Ω-5K	-	±90	±50	±20	1000V	24mm	1000
RP2R5DB-----	2.5	500	-	1Ω-1M	-	-	±250	±250	1000V	24mm	1000
RW3R0DB-----	3.0	200	0.005Ω-13K	0.005Ω-13K	-	±90	±50	±20	1000V	24mm	1000
RP3R0EA-----	3.0	750	-	1Ω-1M	-	-	±250	±250	1000V	32mm	750
RW3R5EA-----	3.5	350	0.005Ω-25K	0.005Ω-25K	-	±90	±50	±20	1000V	32mm	750
RM0R7EA-----	0.75	2500	1KΩ-1000M	1KΩ-1000M	-	-	-	±50	1000V	32mm	750

* At 25°C ambient

DIMENSIONS

Packages

Package Outline Dimensions

PC Board Land Pattern

(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

2.794±.254

1.194 Nom.

1.372±.305

3.454±.127

3.81

8.79

2.49

3.20

1.27

(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

5.588±.254

1.575 Nom.

1.981±.305

4.038±.127

6.50

13.31

3.40

3.20

1.52

(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

6.604±.254

1.575 Nom.

2.134±.305

5.639±.127

7.01

13.64

3.33

3.20

2.36

(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

6.604±.254

1.575 Nom.

3.632±.305

5.740±.127

8.05

14.86

3.40

3.94

2.36

(in.)

.0.625±0.020

.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

10.592±.254

1.575 Nom.

3.632±.305

5.740±.127

12.040

18.85

3.40

3.94

2.36

(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

14.529±.254

2.362 Nom.

3.632±.305

6.934±.127

15.52

25.4

4.95

3.94

2.36

(in.)

.202±.010

.10±.010

.095 REF

.079±.010

.050 Nom.

.065±.012

.135±.005

0.078

0.328

0.125

0.126

0.026

(mm)

5.140±.508

2.54±.127

2.41 REF

2.00±.254

1.280 Nom.

1.640±.305

3.420±.127

1.98

8.33

3.18

3.20

0.66

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.
Land pattern dimensions are for reference only

PERFORMANCE DATA

Construction Temp. cycle (-55°C to 125°C, 1000 cycles) Load Life (1000 hours at 25°C) Immersion (260°C for 10 sec.) Momentary Overload

RC Carbon/Ceramic Composition ±4.0%+.05Ω ±10.0%+.05Ω ±3.0%+.05Ω 6.3xrated power for 5 sec.

RF Metal Film ±0.5%+.05Ω ±.5%+.05Ω ±0.1%+.05Ω 2xrated power for 0.1 sec.

RW Wirewound ±0.5%+.05Ω ±3.0%+.05Ω ±0.1%+.05Ω 5xrated power for 5 sec.

RP Power Film ±3.0%+.05Ω ±5.0%+.05Ω ±0.5%+.05Ω 2xrated power for 0.1 sec.

RN Wirewound, Non-inductive ±0.5%+.05Ω ±3.0%+.05Ω ±0.1%+.05Ω 5x rated power for 5 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, UL94VO

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

Molding material rated at 205°C continuous.

REEL DIMENSIONS

Size A nom. B C max. Qty.

12mm 13" 0.488 +0.078, -0.00 / 12.4 +2.0, -0.0 0.724 / 18.4 2000 pcs. BA or 2500 pcs. BB

16mm 13" 0.646 +0.078, -0.00 / 16.4 +2.0, -0.0 0.882 / 22.4 1500 pcs. CA or 1000 pcs. CB

24mm 13" 0.961 +0.078, -0.00 / 24.4 +2.0, -0.0 1.196 / 30.4 1000 pcs. DA or DB

32mm 13" 1.276 +0.078, -0.00 / 32.4 +2.0, -0.0 1.52 / 38.4 750 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).

HOW TO ORDER

(For example, the part number shown is a wirewound resistor, 3.5 watt, recessed base, 32mm tape size, first case size [A], 1000Ω 1% tolerance.)

See PDF for standard part numbers and availability

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Ohmite Mfg. Co.
1600 Golf Rd., Suite 850
Rolling Meadows, IL 60008
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(1-866-964-6483)
Int'l: 1-847-258-0300
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