RE power aluminum case wound resistor
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RE power aluminum case wound resistor

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RE power aluminum case wound resistor

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Characteristics

  • Molded construction for environmental protection

  • Complete welded construction

  • Meets applicable requirements of Mil - PRF - 18546

  • Available in non - inductive styles with Ayrton Perrywinding for lowest reactive components

  • Mounts on chassis to utilize heat - sink effect

  • Excellent stability in operation

Dimensions(mm)

TypeA±0.1B±0.1C±0.2D±1.5E±0.4F±0.1G±0.4H±0.2J±0.2K±0.2L±0.1M±0.02N±0.1P±0.8
RE60511.212.515.228.68.516.48.11.73.82.41.51.36.7
RE61014.215.91934.910.720.39.91.94.22.42.422.28.0
RE61516.219.62149.21427.413.11.95.94.43.222.211.1
RE63040245070.6162915.52.26.653.22.22.210.3

Rated Power

RE resistor power ratings are to be mounted with the following heat sink:

  • RE 7.5/12.5W: 102x152x51x1mm

  • RE 25W: 127x178x61x1mm

  • RE 50W: 305x305x1.5mm

  • RE 75W: 305x305x1.5mm

  • RE 100W/250W: 305X305X3.2mm

  • RE 150W: 305×305×3.2mm

  • RE 300W: 610×610×3.2mm

Ambient Temperature vs Derating Curve

Derating is required for ambient temperatures above 25. See the following graph.

  • Curves A, B, C apply to operation of unmounted resistors.

  • Curves D applies to all types mounted with specified heat sink.

    • A: RE605, 610 unmounted

    • B: RE615 unmounted

    • C: RE630, 640, 650 unmounted

    • D: All types mounted with recommended aluminum heat sink

Reduced Heat Sink Derating Curve

(Derating is also required when recommended heat sink area is reduced.)

  • A: RE605, 610

  • B: RE615

  • C: RE630, 640, 650

Technical Specifications

TypeMIL - PRF - 18546TYPEP25°C Rated power(W)
Resistance Range

Isolation VoltageTemperature coefficient (10⁻⁶/K)


CivilMilitary±0.25%±0.5%±1%, ±5%, ±10%

RE605RE60G7.5(5)5R50~1K2R10~1K2R10~3K01000V±20
RE605NRE60N7.5(5)51R0~200R1R0~800R1R~1K5

RE610RE65G12.5(10)10R50~2K7R10~2K7R10~4K7

RE610NRE65N12.5(10)101R0~1K21R0~1K21R0~2K0

RE615RE70G2520R10~3K9R10~3K9R1~10K

RE615NRE70N25201R0~2K71R0~2K71R0~4K7

RE630RE75G5030R10~5K6R10~5K6R1~12K2000V±50
RE630NRE75N50301R0~3K91R0~3K91R0~5K0

RE640RE77G10050R05~10KR5~12KR5~18K4500V±100
RE640NRE77N10050R05~5K1R0~5K61R0~9K0

RE650RE80G12060R10~20KR10~20KR10~25K

RE650NRE80N120601R0~8K21R0~8K21R0~12K

Material Specifications

  • Element: Copper - nickel alloy or nickel - chromium alloy depending on resistance value

  • Core: Ceramic, steatite, depending on physical size

  • Encapsulant: Silico molded materials

  • Housing: aluminum with hard anodic coating

  • End Caps: stainless steel

  • Standard Terminals: Tinned Copperwires on Rx24 7.5W CMEL

  • RE 50W Threaded stainless steel terminals in RE 100W/250W

  • Part Marking: VTM, Model, Wattage, Value, Tolerance, Date Code

Special Modifications

Some modifications are available on customer request. The details are as follows:

  • Terminal configurations and materials

  • Resistance values and tolerances

  • Low TCR

  • Housing configuration

  • Thread of mounting hole

  • Pre - processing and other additional testing

Applicable MIL Specifications

MIL - PRF - 18546 is the military specification Covering aluminum housed, chassis mount, power resistors.

Non - inductive resistance

Same physical and electrical characteristics as the normal one are available for non - inductive resistor. Also, they are defined by adding another letter N after the model number (RE605N, for example).

Performance

Test ItemSpecificationsTest Methods

Thermal shockΔR≤ ± ( 0.5%R + 0.05Ω )Pₙ/ - 55°C, 15min

Short time overloadΔR≤ ± ( 0.5%R + 0.05Ω )√5RP, 5S

Dielectric withstanding voltageΔR≤ ± ( 0.2%R + 0.05Ω )RE605 - RE615 1000VₐₙRE630 2000VₐₙRE640 - RE650 4500Vₐₙₑₐ
Moisture proofΔR≤ ± ( 1.0%R + 0.05Ω )40°C, RH93±3%, 240h

Shock proofΔR≤ ± ( 0.2%R + 0.05Ω )100g, 6ms, 10cycles

Vibration with high frequencyΔR≤ ± ( 0.2%R + 0.05Ω )10~200HZ, 20g, 6h

Load lifeΔR≤ ± ( 1.0%R + 0.05Ω )25°C, Pₙ, 1000h


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