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PDFs and Datasheets RW Series Datasheet

RW Series Datasheet

High Power SMD Wirewound Resistors 5 and 7 watt

Res Rw product image

 

Ohmite has used its thermal management expertise to produce a unique resistor design. The resistor body incorporates fins identical to a heatsink. These fins, as with a heatsink, increase the surface area of the part and allow for greater power dissipation. This unique design allows a small footprint for the SMD device and a high power dissipation. These 5 and 7 watt resistors are extremely stable with a load life drift of only 1%. A special flat has been designed in to the part for pick and place operations.

 

Features

  • Finned design facilitates cooling
  • High Power Density
  • Wide Resistance Range
  • Tight Tolerance
  • Low TCR

Characteristics

Power: at 25°C: 7 watts, at 70°C: 5 watts

Resistance range: 0.1Ω ~ 50K

Non-inductive range: 0.1Ω ~ 12.5K

Tolerance: 0.5%, 1%, 5%

Temperature Coefficient: 0.1Ω ~ 0.99Ω: ±90ppm, 1Ω ~ 10Ω: ±50ppm, 10Ω+: ±20ppm

Operating temp. range: -55°C ~ +155°C

Max. working voltage: (PxR)^1/2

Weight: 5.67g

Power: at 25°C: 10 watts, at 70°C: 7 watts

Resistance range: 0.1Ω ~ 100K

Non-inductive range: 0.1Ω ~ 20K

Tolerance: 0.5%, 1%, 5%

Temperature Coefficient: 0.1Ω ~ 0.99Ω: ±90ppm, 1Ω ~ 10Ω: ±50ppm, 10Ω+: ±20ppm

Operating temp. range: -55°C ~ +155°C

Max. working voltage: (PxR)^1/2

Weight: 11.34g

Derating

Res Rw Graph 1

Performance Data

(-55°C to 125°C, 1000 cycles), ±0.5%+.05Ω

(1000 hours at 25°C), ±1.0%+.05Ω

(260°C for 10 sec.), ±0.1%+.05Ω

(260°C Solder immersion, 60 sec.), No visible leaching

(Units at -55°C, then rated power applied), No mechanical damage

UL Material rating, UL94V0

Dimensions

±0.020 in. / ±0.51 mm 

 

Overall Dimensions

Length: 0.806 / 20.47

Width: 0.365 / 9.27

Height: 0.406 / 10.31

Length: 1.128 / 28.65

Width: 0.471 / 11.96

Height: 0.51 / 12.95

 

Land Pattern

L: 0.600 / 15.24

M: 1.000 / 25.40

N: 0.200 / 5.08

O: 0.450 / 11.43

L: 0.890 / 22.61

M: 1.330 / 29.59

N: 0.220 / 5.59

O: 0.520 / 13.21

Res Rw Land Pattern

 

Power Rating and Temperature Rise
data based on the recommended
Land Patterns using 5 oz. copper
PCB. FR-4 material. 0.062" thick. 4
laye

 

Tape And Reel

Reel Hub Diameter: 77mm

Reel Outer Diameter: 560mm

Reel Width: 46mm

Tape Width: 44mm

Pitch: 20mm

Reel Hub Diameter: 77mm

Reel Outer Diameter: 560mm

Reel Width: 46mm

Tape Width: 44mm

Pitch: 24mm

Ordering Information

Res Rw Order Info

 

Standard part numbers For RW Series 

Resistance: 0.10

Tolerance : 1%

Resistance: 1.0

Tolerance : 1%

Resistance: 10

Tolerance : 5%

Resistance: 20

Tolerance : %

Resistance: 47

Tolerance : 5%

Resistance: 100

Tolerance : 5%

Resistance: 470

Tolerance : 5%

Resistance: 1000

Tolerance : 5%

Resistance: 4700

Tolerance : 5%

Resistance: 10,000

Tolerance : 5%

Resistance: 1.0

Tolerance : 1%

Resistance: 10

Tolerance : 1%

Resistance: 100

Tolerance : 1%

Resistance: 1000

Tolerance : 1%

Resistance: 10,000

Tolerance : 1%

Resistance: 100,000

Tolerance : 1%

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