VPR221SZ Datasheet, PDF (1/5 Pages) Vishay Siliconix – Ultra High Precision Z-Foil Surface Mount Power Resistor in TO-220 Configuration with TCR of ± 0.05 ppm/°C,

VPR221SZ (Z-Foil)
Vishay Foil Resistors
Ultra High Precision Z-Foil Surface Mount Power Resistor
in TO-220 Configuration with TCR of ± 0.05 ppm/°C,
PCR of 4 ppm/W and Load Life Stability of ± 0.005 % (50 ppm)
CT _{Any value at any tolerance available within resistance range}
U _INTRODUCTION
The Z-Foil Technology provides a significant reduction of the
D ^{resistive component’s sensitivity to ambient temperature}
variations (TCR) and applied power changes (PCR).
Model VPR221SZ is a 4 lead kelvin connected surface
O _{mount device which provides high rated power, excellent}
load life stability, low Temperature Coefficient (TCR) and low
R ^{Power Coefficient (PCR) - all in one resistor. ± 0.05 ppm/°C}
Absolute TCR removes error due to temperature gradients.
P ^{By taking advantage of the overall stability and reliability of}
Vishay Bulk Metal^® Z-Foil resistors, designers can
significantly reduce circuit errors and greatly improve overall
circuit performances.
D _{Our Application Engineering Department is available to}
advise and make recommendations. For non-standard
E _{technical requirements and special applications, please}
contact us.
V _{TABLE 1 - TCR AND TOLERANCE}
O RESISTANCE
RANGE (Ω)
TIGHTEST
RESISTANCE
TOLERANCE
TYPICAL TCR AND
MAX. SPREAD¹⁾
R 0.5 to < 1
± 0.05 %
± 0.2 ppm/°C ± 2.8 ppm/°C
1 to < 10
± 0.02 %
± 0.2 ppm/°C ± 2.3 ppm/°C
P _{10 to 500}
IM ^Notes
± 0.01 %
± 0.2 ppm/°C ± 1.8 ppm/°C
FEATURES
• Temperature Coefficient of Resistance (TCR):
± 0.05 ppm/°C typical (0 °C to + 60 °C)
± 0.2 ppm/°C typical (- 55 °C to + 125 °C,
+ 25 °C Ref.) (see table 1)
• Tolerance: to ± 0.01 %
Pb-free
Available
RoHS*
COMPLIANT
• Power Coefficient “ΔR due to self heating”:
4 ppm/W typical
• Rated Power: 8 W chassis mounted (MIL-PRF-39009)
• Load Life Stability: to ± 0.005 % at 25 °C for 2000 hours,
at 1.5 W
• Resistance Range: 0.5 Ω to 500 Ω
• Electrostatic Discharge (ESD) above 25 000 Volts
• Short Time Overload ≤ 0.001 % (10 ppm)
• Non Inductive, Non Capacitive Design
• Rise Time: 1 ns without ringing
• Current Noise < - 40 dB
• Thermal EMF: 0.05 µV/°C typical
• Voltage Coefficient < 0.1 ppm/V
• Non Inductive: < 0.08 µH
• Non Hot Spot Design
• Terminal Finishes available: Lead (Pb)-free
Tin/Lead Alloy
• Any value available within resistance range (e.g. 1K234)
• Prototype samples available from 48 hours. For more
information, please contact [e-mail]
• For better performances please contact us
APPLICATIONS
• Automatic Test Equipment (ATE)
• High Precision Instrumentation
• Electron Beam application
• Current Sensing applications
R
• Pulse applications
I
I
• Military
• Power amplifier
I₁
E₁
E₂
I₂
• Power supplies
V
FIGURE 1- POWER DERATING CURVE
- 55 °C
100
75
50
1. MIL-Range (- 55 °C to + 125 °C, + 25 °C Ref.)
25
• Contact Applications Engineering for other available values
* Pb containing terminations are not RoHS compliant, exemptions may apply
0
- 75 - 50 - 25 0 25 50 75 100 125 150
Ambient Temperature (°C)
www.vishay.com
1
For any questions, contact: [e-mail]
Document Number: 63127
Revision: 11-Jun-07