Document Number: 63036
Revision 19-Jul-02
www.vishay.com
88
VHD200, VHD144
Vishay Foil Resistors
THROUGH HOLE
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
Small Package, Ultimate Tracking Voltage Dividers
FEATURES
•Temperature Coefficient of Resistance:
Nominal TCR: 0.6ppm/°C (0° to 60°C)
2.0ppm/°C (– 55° to + 125°C)
TCR Tracking: VHD200 to ± 0.1ppm/°C
VHD144 to ± 0.5ppm/°C
•Ratio Stability: < ± 0.001% (10ppm) under load-life
conditions
•Ratio Tolerance: VHD200 to ± 0.001% (10ppm)
VHD144 to ± 0.005% (50ppm)
•Thermal EMF: 0.05µV/°C (typical)
0.10µV/°C (maximum) between leads
•Rise Time: to 1ns, no ringing
•Noise Factor: < – 40dB
•Non Inductive: < 0.08µH
1. Lead wires: #22 AWG solder coated copper,
0.75" minimum length.
2. Each resistor contains 1 chip consisting of two
resistive elements.
Tol: ±0.020"
Standard Printing and Dimensions Schematic 2
VISHAY
0110
VHD200
5K0000
0.01%
10K000
1
Low Resistance
Value Indicator
0.398
(10.109)
0.430
(10.922)
0.047
(1.194)
Match
Tolerance
Date Code
Model No.
0.095
(2.413)
0.751
(19.05)
123
0.146
(3.708)
0.435
(11.095)
0.370
(9.398)
0.1
(2.54)
0.185
(4.699)
Vishay Models VHD200 and VHD144 are hermetic versions of
the molded divider 300144 shown on the first page of “300144
and 300145.” The difference between them is that the VHD144
has the full power rating of the 300144 while the VHD200 has
a reduced power rating in exchange for a full spectrum of values
without the time delay for new artwork (for values not yet tooled)
and without NRE charges. Further, the ratio match and the
TCR tracking of the VHD200 are considerably improved over
all of the above.
The value of the hermetic enclosure over the molded part is in
the long term performance. Moisture and oxygen both pass
through plastic and both contribute to long term degradation of
resistive elements. Divider ratios of 1:1 are not as likely to lose
ratio with time but as the ratios become greater, the imbalance
of power has more effect on the ratio stability and the hermetic
enclosure becomes of paramount importance.
ORDERING INFORMATION - VHD200 AND VHD144
Specify Vishay Ultra Precision Miniature Voltage Dividers as
follows:
MODEL RESISTANCE ABSOLUTE RATIO MATCH TCR
NUMBER VALUE* TOLERANCE TOLERANCE TRACKING
VHD144 R1 = 5KΩ±0 .05%
± 0.01% 0.5ppm/°C
R2 = 10KΩ± 0.05%
*Specify the resistance value for each resistor of the set — even if
all values are the same.
123
R1 R2
FIGURE 1 - VHD200 AND VHD144 STANDARD PRINTING AND DIMENSIONS in inches (millimeters)
Product may not
be to scale
www.vishay.com
89
VHD200, VHD144
Vishay Foil Resistors
Document Number: 63036
Revision 19-Jul-02
THROUGH HOLE
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
0.1W @ +85°C (for
the entire resistive
element R1 + R2)
divided proportion-
ally between the
two elements
(over 10K).4
0.2W @ +85°C (for
the entire resistive
element R1 + R2)
divided proportion-
ally between the
two elements.
TABLE 1 - VHD200 AND VHD144 SPECIFICATIONS
( ) ( )
VISHAY
MODEL
VHD200 2
VHD144 5
RESISTANCE
RATIO
AVAILABLE1
(Ω)
Any value from
100 Ω to 20K
per side
100/100
100/12.3K
500/500
500/15K
800/800
1K/1K
1K/2K
1.5K/3K
2K/2K
2K/3K
2K/4K
2K/20K
2.7K/10K
3K/6K
5K/5K
5K/10K
5.5K/7.7K
6K/6K
6K/20K
10K/10K
10K/20K
15K/15K
20K/20K
POWER
RATING 3, 6
ABSOLUTE
AVAILABLE TO
±0.005%
±0.005%
RATIO MATCH
AVAILABLE TO
±0.001%
±0.005%
TCR TRACKING
AVAILABLE TO
±0.1 ppm/°C
< ±0.5 ppm/°C
For Like Values
< ±1 ppm/°C
Standard
SHELF LIFE
STABILITY
(ppm/yr)
5
5
1. For resistance ratios outside the range, contact Vishay’s Applications Engineering Department.
2. The VHD200 is available in any required ratio between the resistance values of 100 ohms and 20Kohms, such that
R1 can be any value between 100 ohms and 20Kohms and R2 can also be any value between 100 ohms and 20Kohms.
3. Power is proportional to the divider ratio.
Example: In a VHD144 (1K/10K dual), the power rating would be 18 mW on the 1K and 182mW on the 10K,
for a total of 200mW on R1 + R2.
R1 R2
P1 = P P2 = P
R1 + R2 R1 + R2
4. For power rating below 10K, contact the Applications Engineering Department.
5. Any value from 100 ohms to 20Kohms inclusive is available with some derating of power.
6. Maximum working voltage is 200 Volts.
STANDARD RESISTANCE TOLERANCE
Bulk Metal® Foil Technology
Small Package, Ultimate Tracking Voltage Dividers
