www.vishay.com
33
VPR220S, VPR221S
Vishay Foil Resistors
Document Number: 63050
Revision 20-Jul-04
SURFACE MOUNT
VISHAY FOIL • FRANCE +33.4.93.37.28.24 FAX: +33.4.93.37.27.31
• GERMANY +49.9287.710 FAX: +49 9287.70435
• ISRAEL +972.3.557.0945 FAX: +972.3.558.9121
• ITALY + 39.2.300.11919 FAX: +39.2.300.11999
• JAPAN +81.42.729.0661 FAX: +81.42.729.3400
• SINGAPORE +65.788.6668 FAX: +65.788.0988
• SWEDEN +46.8.594.70590 FAX: +46.8.594.70581
• UK +44 191 514 8237 FAX: +44 1953 457 722
• USA +1 610 407-4800 FAX: +1 610 640-9081
Bulk Metal® Foil Technology
Precision Foil Surface Mount Power Resistors in TO-220 Configuration
FEATURES
• Leads preformed for surface mounting
• Power: 8 watts - chassis mounted (per MIL-R-39009)
• Load Life Stability: ± 0.05% maximum ∆R at rated
power and temperature for 2,000 hours
• Temperature Coefficient of Resistance: to ± 5ppm/°C
• Resistance Range: 0.5 to 10KΩ
• Tolerance: To ± 0.01%
• Low Thermal EMF: 0.15µV/°C maximum (lead effect)
• Non-Inductive Construction
• Heat sink is isolated
• Tin/Lead (Sn 60% Pb 40%) coated termination standard.
Lead free (100% Sn) option available
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.
TABLE 1 - SPECIFICATIONS
Load Life Stability at 2,000 hrs
Shelf Life Stability
Power Rating @ + 25°C
Current Noise
High Frequency Operation
Rise/Decay Time
Inductance4 (L)
Capacitance (C)
Voltage Coefficient5
Operating Temperature Range
Maximum Working Voltage
Thermal EMF6
± 0.05% max ∆R under full rated power @ + 25°C
±0.0025% ∆R/year
8 watts or 3 amps2 on heat sink3
1.5 watts or 3 amps2 in free air
Further derating not necesary.
< 0.010µV (rms)/volt of applied voltage (– 40dB)
0.2ns @ 1 Ω
0.1µH maximum: 0.03µH typical1
1.0pF maximum: 0.5pF typical1
< 0.1ppm/V
– 55°C to + 150°C
300 V. Not to exceed power rating.
0.15µV/°C maximum (lead effect)
Weight = 1.2 grams Maximum
*Maximum specifications.
Contact Applications Engineering for other available values.
RESISTANCE TIGHTEST TCR*
RANGE (Ω) RESISTANCE TOLERANCE
50 to 10K ± 0.01% ± 5ppm/°C
25 to < 50 ± 0.02% ± 7ppm/°C
10 to < 25 ± 0.05% ± 10ppm/°C
5 to < 10 ± 0.1% ± 13ppm/°C
Weight = 1 gram Maximum
*Maximum specifications.
Lower values available but not recommended due to high TCR.
RESISTANCE TIGHTEST TCR*
RANGE (Ω) RESISTANCE TOLERANCE
0.5 to < 1 ± 0.05% ± 5ppm/°C
1 to < 10 ± 0.02% ± 5ppm/°C
10 to 500 ± 0.01% ± 5ppm/°C
NOTES:
1. Maximum is 1.0% A.Q.L. standard for all
specifications except TCR. Typical is a designers
reference which represents that 85% of the units
supplied, over a long period of time, will be at least the
figure shown or better.
2. Whichever is lower.
3. Heat sink chassis dimensions and requirements
per MIL-R-39009/1B:
DIMENSION Inches mm
L 6.00 152.4
W 4.00 101.6
H 2.00 50.8
T 0.04 1.0
4. Inductance (L) due mainly to the leads.
5. The resolution limit of existing test equipment
(within the measurement capability of the equipment,
“essentially zero”).
6. µV/°C relates to EMF due to lead temperature
difference.
TABLE 2 - VPR220S TABLE 3 - VPR221S
Product may not
be to scale
Document Number: 63050
Revision 20-Jul-04
www.vishay.com
34
VPR220S, VPR221S
Vishay Foil Resistors
SURFACE MOUNT
VISHAY FOIL • FRANCE +33.4.93.37.28.24 FAX: +33.4.93.37.27.31
• GERMANY +49.9287.710 FAX: +49 9287.70435
• ISRAEL +972.3.557.0945 FAX: +972.3.558.9121
• ITALY + 39.2.300.11919 FAX: +39.2.300.11999
• JAPAN +81.42.729.0661 FAX: +81.42.729.3400
• SINGAPORE +65.788.6668 FAX: +65.788.0988
• SWEDEN +46.8.594.70590 FAX: +46.8.594.70581
• UK +44 191 514 8237 FAX: +44 1953 457 722
• USA +1 610 407-4800 FAX: +1 610 640-9081
FIGURE 2 - VPR220S, VPR221S FORMING
DIMENSIONS in inches (millimeters)
0.365 (9.271) Reference
0.050 ±0.005
(1.27 ±0.13)
0.150 ±0.008
(3.81 ±0.2)
0.015 ±0.002
(0.381 ±0.05)
0.078 ±0.005
(1.98 ±0.13)
Heat Sink
0.695 ±0.010
(17.65 ±0.25)
0.090 ±0.010
(2.286 ±0.25)
0.090 (2.286) Reference
0.110 (2.794) Reference
Flush with Heat Sink
Within ±0.002 (±0.051)
Before Forming
After Forming
FIGURE 1 - POWER DERATING CURVE
Ambient Temperature (°C)
+100
+75
+50
+25
0+25 +50 +75 +100 +125 +150
Percent of Rated Power
Bulk Metal® Foil Technology
Precision Foil Surface Mount Power Resistors in TO-220 Configuration
FIGURE 4 - VPR221S DIMENSIONS in inches (millimeters)
FIGURE 3 - VPR220S DIMENSIONS in inches (millimeters)
0.400 ± 0.010
(10.16 ± 0.25)
VISHAY
VPR220S
1K0 1%
0101
0.245 ±0.010
(6.22 ±0.25)
0.141 ±0.005 Diameter
(3.58 ±0.13)
0.030 ±0.002
(0.76 ±0.05)
0.200 ±0.005
(5.08 ±0.13)
0.115 ±0.005
(2.92 ±0.13)
0.050 ±0.005
(1.27 ±0.13)
0.200 ±0.030
(5.08 ±0.76)
E
2
0.030 ±0.002
(0.76 ±0.05)
0.100 ±0.005
(2.54 ±0.13)
0.400 ±0.010
(10.16 ±0.25)
VISHAY
VPR221S
1R0 1%
0101
0.245 ±0.010
(6.22 ±0.25)
0.141 ±0.005 Diameter
(3.58 ±0.13)
0.115 ±0.005
(2.92 ±0.13)
0.050 ±0.005
(1.27 ±0.13)
0.200 ±0.030
(5.08 ±0.76)
E
1I2
I1
TABLE 4 - ORDERING INFORMATION
Specify Vishay VPR220S or VPR221S for surface mount resistors as follows:
Example:
(none) = 60/40Tin/Lead (none) = Bulk Pack
VPR221S T = 100% Tin 5R0000 1.0% T = Tape and Reel
MODEL NO. TERMINATION RESISTANCE VALUE TOLERANCE PACKAGING
RESISTANCE LETTER MULTIPLIER
RANGE DESIGNATOR FACTOR EXAMPLE
0.5Ω to < 1KΩR x1 100R01 = 100.01Ω
1KΩ to 10KΩK x1035K2310 = 5,231Ω
Resistance value, in ohms, is expressed by a series of 6 characters, 5 of which represent significant digits while the 6th is a dual purpose
letter that designates both the multiplier and the location of the comma or decimal.
Legal Disclaimer Notice
Vishay
Document Number: 91000 www.vishay.com
Revision: 08-Apr-05 1
Notice
Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc.,
or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies.
Information contained herein is intended to provide a product description only. No license, express or implied, by
estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's
terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express
or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness
for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications.
Customers using or selling these products for use in such applications do so at their own risk and agree to fully
indemnify Vishay for any damages resulting from such improper use or sale.
