Passive Components


5 W current sensing resistors

11 November 2009 Passive Components

Vishay has expanded its WSR series of Power Metal Strip resistors with the first such device to offer a 5 W power rating in the 4527 package size. Like the WSR2 (2 W) and WSR3 (3 W), the new WSR5 measures just 11,56 mm by 6,98 mm with a height profile of 2,41 mm, making it a compact solution for electronic controls in automotive systems, power supplies in communications base stations, and DC-DC converters and VRMs in high-end workstations and servers.

A proprietary processing technique allows the WSR5 to offer low resistance values ranging from 1 m to 300 m in a standard resistance tolerance of ±1%. A tolerance of ±0,5% is available for the resistance range of 10 m to 300 m. The WSR5’s low inductance values range from 0,5 nH to 5 nH, and the device’s temperature coefficients are ±110 ppm/°C for the 7,5 m to 9,9 m range and ±75 ppm/°C for the 10 m to 300 m range.

The resistor’s proprietary construction features a moulded, high-temperature encapsulation with an integrated heatsink for improved thermal management. As a result, it maintains the good electrical characteristics of the Power Metal Strip construction during operation in a variety of high-current applications. Low thermal EMF, a broad operating temperature range of -65°C to +275°C, and resistance to moisture, vibration, thermal and mechanical shock ensure reliable operation. The WSR5’s proprietary Power Metal Strip design features all-welded construction, solderable terminations and a solid metal alloy resistive element.

For more information contact Marian Ledgerwood, Future Electronics, +27 (0)21 421 8292, [email protected], www.futureelectronics.com



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

3,75 GHz RF inductor
RF Design Passive Components
The ceramic chip wire wound inductor from Coilcraft features a DC resistance of 1 O, a DC current of 175 mA, and a self-resonant frequency of 3,75 GHz.

Read more...
ST’s biosensing tech enables next-gen wearables
Future Electronics DSP, Micros & Memory
The highly integrated biosensor device combines an input channel for cardio and neurological sensing, with motion tracking and embedded AI core, for healthcare and fitness applications.

Read more...
Upgraded power inductor series
iCorp Technologies Passive Components
Sunlord’s multiphase co-fired power inductor HTF-MP series has upgraded the single-phase HTF-H products in terms of integrated applications.

Read more...
1700 V GaN Switcher IC
Future Electronics Power Electronics / Power Management
Power Integrations has introduced a new member of its InnoMux-2 family of single-stage regulated multi-output offline power supply ICs, the industry’s first 1700 V gallium nitride switch.

Read more...
Advanced high-voltage capacitors
RS South Africa Passive Components
These new capacitor families from Panasonic are designed for surface-mount and radial lead applications, offering remarkable performance improvements that meet the evolving needs of industrial applications.

Read more...
Chip capacitors for high-voltage applications
RS South Africa Passive Components
TDK Corporation has expanded its line of CeraLink capacitor series B58043 in the EIA 2220 footprint by adding two new 900 V types.

Read more...
32-bit range of MCUs
Future Electronics DSP, Micros & Memory
If your design has outgrown the capabilities of 8- or 16-bit MCUs, the PIC32 family delivers easy scalability, enhanced performance, and larger memory options.

Read more...
Moulded inductors
Future Electronics Passive Components
Abracon’s mini-moulded inductors bring all the advantages of their larger counterparts, including superior EMI shielding, high power density, and low core losses, despite their compact size.

Read more...
i.MX RT700 for the AI-enabled edge
Future Electronics DSP, Micros & Memory
Designed to enable significant power savings, the highly integrated i.MX RT700 crossover MCU features NXP’s eIQ Neutron Neural Processing Unit, delivering up to 172x AI acceleration at the edge.

Read more...
New components from KEMET available from TME
Passive Components
Available from KEMET, one of the largest suppliers of passive components, these new components consist of toroidal inductors (ferrites) and capacitors which boast high current performance.

Read more...