VHP-4

• 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 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 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 VHP-3 and VHP-4 have 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 of VHP-3 and VHP-4 is available to advise and to make recommendations. For non-standard technical requirements and special applications, please contact us.