Document Number: 63050 For any questions, contact: foil@vishay.com
www.vishay.com
Revision: 29-Feb-08 1
VPR220S, VPR221S
Vishay Foil Resistors
Bulk Metal
®
Foil Technology Precision Foil Power Surface Mount
Resistors in TO-220 Configuration with TCR of ± 2 ppm/°C
,
Tolerance of to ± 0.01 %
and Power Rating to 8 W
Any value at any tolerance within resistance range
Models VPR220S AND VPR221S, made from Vishay Bulk
Metal
®
foil, offer low TCR, high stability, tight tolerance and
fast response time in a small, molded resistor. Model
VPR220S is a 2 lead device. Model VPR221S is a 4 lead
Kelvin connected device. The 4 leaded version is highly
recommended for precision applications requiring ohmic
values of 100R or less.
weight = 1 g maximum
Notes
1. Lower or high values available upon request
2. - 55 °C to + 125 °C, + 25 °C ref.
weight = 1.2 g maximum
Notes
1. Lower or high values available upon request
2. - 55 °C to + 125 °C, + 25 °C ref.
FEATURES
•
Temperature coefficient of resistance (TCR):
± 2 ppm/°C typical (- 55 °C to + 125 °C,
+ 25 °C Ref.)
• Tolerance: to ± 0.01 % (see tables 1 and 2)
• Electrostatic discharge (ESD): above 25 000 V
• Load life stability: ± 0.005 % (25 °C, 2000 h at rated power)
• Resistance range: 0.5 Ω to 10 kΩ
• Power rating: 8 W chassis mounted (per MIL-PRF-39009)
• Non inductive, non capacitive design
• Rise time: 1 ns without ringing
• Current noise: < - 40 dB
• Voltage coefficient: < 0.1 ppm/V
• Non inductive: < 0.08 µH
• Non hot spot design
• Thermal EMF: 0.05 µV/°C typical
• Terminal finishes available: lead (Pb)-free
tin/lead alloy
• 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 see VPR220SZ and
VPR221SZ datasheets
* Pb containing terminations are not RoHS compliant, exemptions may apply
TABLE 1 - VPR220S
RESISTANCE
RANGE
(Ω)
1)
TIGHTEST
TOLERANCE
TYPICAL
TCR
2)
MAXIMUM
TCR
2)
50 to 10K ± 0.01 % ± 2 ± 5 ppm/°C
25 to < 50 ± 0.02 % ± 2 ± 7 ppm/°C
10 to < 25 ± 0.05 % ± 2 ± 10 ppm/°C
5 to < 10 ± 0.1 % ± 2 ± 13 ppm/°C
TABLE 2 - VPR221S
RESISTANCE
RANGE
(Ω)
1)
TIGHTEST
TOLERANCE
TYPICAL
TCR
2)
MAXIMUM
TCR
2)
10 to < 500 ± 0.01 %
± 2
± 5 ppm/°C
1 to < 10 ± 0.02 %
± 2
± 5 ppm/°C
0.5 to < 1 ± 0.05 %
± 2
± 5 ppm/°C
FIGURE 1 - POWER DERATING CURVE
Available
Pb-free
RoHS*
COMPLIANT
I
1
E
1
E
2
I
2
R
V
I
I
Ambient Temperature (°C)
+ 150+ 125+ 100+ 75+ 50+ 250- 25- 50
+ 100
+ 75
+ 50
+ 25
0
Percent of Rated Power
- 55 °C
