VPR247

• Temperature coefficient of resistance TCR: ± 2 ppm/ typical (-55 to + 125 , +25 ref.) (see tables 1 and 2)
• Tolerance: to ± 0.01 % (see tables 1 and 2)
• Power rating (heat-sinked): 10 W
• Load life stability: ± 0.01 % at 25 , 2000 h at rated power
• Resistance range: 0.05 to 80 k
• Electrostatic discharge (ESD) above 25 000 V
• Non inductive, non capacitive design
• Rise time: 1.0 ns without ringing
• Current noise: < - 40 dB
• Thermal EMF: 0.05 µV/ typical
• Voltage coefficient: < 0.1 ppm/V
• Non inductive: 0.08 µH
• Non hot spot design
• Terminal finishes available:
   VHP-3 and VHP-4:   lead (Pb)-free
                                  tin/lead alloy
   VPR247:                  gold plated
• Any value available within resistance range (e.g. 1K234)
• Prototype samples available from 48 h. For more information, please contact foil@vishay.com
• For better performances, please contact Application Engineering

Vishay Bulk Metal® Foil VPR247, VHP-3 and VHP-4 power resistors offer the best approach to low value power and current sensing when a combination of accuracy, tight TCR, low thermal EMF, low voltage coefficient, Kelvin connection, and long term stability (under power) are required.

Vishay Models VPR247, VHP-3 and VHP-4  offer all welded construction and screw mounting directly to a metal heat sink for maximum heat transfer. Hermetic sealing and nitrogen back fill provide the maximum protection against environmental stresses, thereby ensuring long term stability. A special feature of this construction is Kovar eyelet's and OFHC solder plated copper leads providing the lowest thermal EMFs in the industry.Vishay Model VPR247 has many of the advantages of the VHP-4 but with significantly reduced size and weight. It also has gold plated copper leads. Our Application Engineering department is available to advise and to make recommendations. For non-standard technical requirements and special applications, please contact us.