Power resistors

11 May 2011 Passive Components

Bourns has introduced two new power resistor series – one in surface mount format and the other a through-hole type.

Model PWR263S-35 is a surface mount resistor rated to 35 W continuous power in a D2PAK package; the free to air power rating of the component is 2,8 W. The resistor is designed to withstand peak temperatures of 260°C during solder reflow. The parts are available in tubes of 50 units or reels of 500 units. Model PWR220T-35 is a radial-leaded resistor rated to 35 W continuous power in a TO-220 style package, with a free to air power rating of 2,8 W. It has a sealed thermoset plastic housing and is designed to be placed with its nickel-plated copper back against a heatsink for higher power dissipation.

The wide resistance range, pulse power handling and low inductance make both of these resistor series a good choice for functions such as current limiting, current sensing, capacitor discharge in battery charging, AC/DC , DC/DC and DC/AC conversion circuits in uninterruptible power supplies, welding machines, automation, lighting, telecom power supplies, aerospace, automotive and railway equipment.

Further reading:

Wide frequency range inductors
RS South Africa Passive Components
TDK Corporation has expanded its ADL4524VL series (4,5 x 2,4 x 2,6 mm – L x W x H) of wire-wound inductors for automotive power-over-coax.

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Cutting-edge hybrid capacitors
Avnet Silica Passive Components
Panasonic Industry recently announced the launch of the ZVU Series Hybrid Capacitors, a cutting-edge solution tailored to meet the escalating demands of advanced electronic systems.

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Low-profile tantalum chip capacitors
Electrocomp Passive Components
These general-purpose tantalum capacitors from Kyocera AVX are available in multiple case sizes with low profile options.

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Coupled inductor for high-performance applications
Passive Components
This coil with MnZn core is characterised by its high permeability and extremely low RDC values, which achieves excellent power density and very high efficiency.

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Power inductors
iCorp Technologies Passive Components
he HTF-MP series is more suitable for complex multiphase power supply applications in design, effectively meeting the needs of ultra-thin and high-power devices.

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SMT power inductors
Future Electronics Passive Components
The Würth Elektronik WE-MXGI SMT power inductors are the latest addition to Würth Elektronik’s moulded power inductor series, engineered for high-frequency power applications.

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Large capacitance MLCCs at 100 V
RS South Africa Passive Components
TDK Corporation has expanded its CGA series for automotive multilayer ceramic capacitors to 10 µF at 100 V in 3225 size.

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Film and mica capacitors
Actum Passive Components
By utilising various polymer dielectrics plastics, Exxelia film and mica capacitors meet most technical requirements and serve all functions from standard filtering to specialised applications.

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Power-over-coax inductors
RS South Africa Passive Components
TDK has expanded the ADL3225VF series of wire-wound inductors for automotive power-over-coax (PoC).

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Thick film power resistors
Electrocomp Passive Components
Vishay has released a new product to the market, its thick film power resistor, which is offered in a clip-mount TO-247 package.

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