RM0R7EA261MF - Ohmite Manufacturing 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.com5

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 composi-

tion 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 val-

ues, down to 0.005Ωand

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. 0.1Ω–1Ω1Ω–10Ω10Ω+ Withstanding 13" reels per reel

RC0S2CA––––– 0.25 250 — 2.2Ω–5.6M — ±400 ±400 1000V 16mm 1500

RC0R5DB––––– 0.50 350 — 2.2Ω–20M — ±400 ±400 1000V 24mm 1000

RF0S8BA––––– 0.8 200 1Ω–5M 0.3Ω–10M — ±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

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––––– 1.5 350 — 1Ω–1M — ±250 ±250 1000V 16mm 1000

RP1R5CB–––––

RW2S0CB––––– 2.0 100 0.005Ω–5K 0.005Ω–5K ±90 ±50 ±20 1000V 16mm 1000

RW2R0CB–––––

RP2S0DA––––– 2.0 500 — 1Ω–1M — ±250 ±250 1000V 24mm 1000

RP2R0DA–––––

RW2S0DA––––– 2.0 100 0.005Ω–5K 0.005Ω–5K ±90 ±50 ±20 1000V 24mm 1000

RW2R0DA–––––

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

Flexible

J-bend

Standard

pedestal mount Recessed-base

mount

Dimensions (in. /

)

Series Wattage Ohms Length Height Width Voltage

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 0.655 /

16.64

0.226 /

5.74

0.273 /

6.93

350

RM0R7EA 0.75 1K-900M 0.811 /

20.60

0.273 /

6.93

0.273 /

6.93

2500

RF0S8BA 0.80 0.30–10M 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

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

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

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 0.625 /

15.88

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: 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)

6Ohmite 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

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±.010 .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±.254 3.454±.127 3.81 8.79 2.49 3.20 1.27

CA (in.) .394±.020 .159±.005 .156 REF .220±.010 .062 Nom. .078±.010 .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±.254 4.038±.127 6.50 13.31 3.40 3.20 1.52

CB (in.) .407±.020 .226±.005 .222 REF .260±.010 .062 Nom. .084±.013 .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±.330 5.639±.127 7.01 13.64 3.33 3.20 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 6.604±.254 1.575 Nom. 3.632±.305 5.740±.127 8.05 14.86 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 10.592±.254 1.575 Nom. 3.632±.305 5.740±.127 12.040 18.85 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 14.529±.254 2.362 Nom. 3.632±.305 6.934±.127 15.52 25.4 4.95 3.94 2.36

K=0.006 ±.005

Note 1 F=0.005 ±.001

Note 2

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%+.05Ω±10.0%+.05Ω±3.0%+.05Ω6.3xrated power for 5 sec.

RF Metal Film ±0.5%+.05Ω±.5%+.05Ω±0.1%+.05Ω2xrated power for 0.1 sec.

RW Wirewound ±0.5%+.05Ω±3.0%+.05Ω±0.1%+.05Ω5xrated power for 5 sec.

RP Power Film ±3.0%+.05Ω±5.0%+.05Ω±0.5%+.05Ω2xrated 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

2000 pcs. BA

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

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).

0.795*

20.2

min.

0.512 ±.008

13.0

.200

1.973

min.

0.059*

1.5

min.

Full

Radius

Tape Start Slot

Measured

at Hub

0.098 /

2.5

min. width

0.394 /

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

Temperature rise

Rated power

Alumina

Solder joint

FR4

Package limit hot spot temperature rise

EXTENSIVE ENVIRONMENTAL TESTS ENSURE OHMITE PERFORMANCE

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.com7

RW1S0BA–––

RW1S5CA–––

RW2S0CB–––

RW2R0CB–––

RW2S0DA–––

RW2R0DA–––

RW3R0DB–––

RW3R5EA–––

BA CA CB CB DA DA DB EA

SSSRSRRR

1.0 1.5 2.0 2.0 2.0 2.0 3.0 3.5

Wirewound

1.00 –––1R00–F/JJJ JJ

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–JJ J

11.00 –––11R0–

15.00 –––15R0–JJ

20.00 –––20R0–J

24.90 –––24R9–

47.00 –––47R0–JJ

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–JJFJJ

0.025 –––R025–J

0.027 –––R027–J

0.030 –––R030–FJJ 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–JJ

0.100 –––R100–F/J J J F J J J

0.150 –––R150–JJJ

0.200 –––R200–JJ J

0.220 –––R220–J

0.240 –––R240–JJ

0.300 –––R300–JJ

0.330 –––R330–J

0.400 –––R040–J

0.400 –––R400–J

0.470 –––R470–JJ J

0.500 –––R500–JJJJ

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

➤

STOCK VALUES AVAILABLE

BA CA CB CB DA DA DB EA

SSSRSRRR

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.)

ORDERING INFORMATION

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 con-

sidered 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.

➤

RW3R5EA1K00FT

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 = .1%

D = .5%

F = 1%

G = 2%

H = 3%

J = 5%

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)