VHD200, VHD144
Vishay Foil Resistors
Bulk Metal
®
Foil Hermetically sealed, Small Package,
Voltage Dividers with TCR Tracking of 0.1 ppm/°C
and Tolerance Match down to 0.001 %
FEATURES
•
Temperature coefficient of resistance (TCR):
•
•
Any value at any ratio available within resistance range
Vishay Models VHD200 and VHD144 are hermetic versions
of the molded divider 300144. 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 VHD200 is oil filled, providing additional
moisture protection and allowing considerable improvement
in ratio match and TCR tracking.
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.
Our Application Engineering Department is available to
advise and make recommendations. For non-standard
technical requirements and special applications. Please
contact us.
•
•
•
•
•
•
•
•
•
•
•
•
•
Absolute: ± 2 ppm/°C typical
Pb-free
(- 55 °C to + 125 C, 25 °C ref.)
Available
Tracking: 0.1 ppm/°C typical
RoHS*
COMPLIANT
Tolerance:
absolute to ± 0.005 %
match to 0.001 %
Power rating: VHD144 0.2 W at 70 °C (see table 1)
VHD200 0.1 W at 70 °C (see table 1)
Ratio stability: < 0.001 % (10 ppm) 0.2 W at 70 °C for 2000 h
Electrostatic discharge (ESD) above 25 000 V
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 h. For more
information, please contact foil@vishay.com
For better performances, please contact us
R
2
R
1
-
+
V
in
V
out
VHD200,
VHD144
TABLE 1 - VHD200 AND VHD144 SPECIFICATIONS
VISHAY
MODEL
RESISTANCE
RATIO
AVAILABLE
1)
(Ω)
POWER
RATING
3), 6)
STANDARD RESISTANCE
TOLERANCE
ABSOLUTE
AVAILABLE TO
± 0.005 %
SHELF
TCR
LIFE
TRACKING
STABILITY
MATCH
AVAILABLE TO
(ppm/yr)
AVAILABLE TO
0.001 %
0.1 ppm/°C
< 0.5 ppm/°C
for like values
< 1 ppm/°C
standard
R
2
-
P
2
=
⎛
------------------
⎞
P
⎝
R
1
+
R
2
⎠
5
VHD200
2)
Any value from
100
Ω
to 20K
per side
0.1 W at + 25 °C (for the entire resistive
element R
1
+ R
2
) divided proportionally
between the two elements (over 10K).
4)
0.2 W at + 70 °C (for the entire resistive
element R
1
+ R
2
) divided proportionally
between the two elements.
VHD144
5)
± 0.005 %
0.005 %
5
Notes
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
Ω
and 20 kΩ, such that R
1
can be any
value between 100
Ω
and 20 kΩ and R
2
can also be any value
between 100
Ω
and 20 kΩ.
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 182 mW on the 10K, for a total of 200 mW
on R
1
+ R
2
.
R
1
-
P
1
=
⎛
------------------
⎞
P
⎝
R
1
+
R
2
⎠
4. For power rating of values below 10K, contact the applications
engineering department.
5. Any value from 100
Ω
to 20 kΩ inclusive is available with some
derating of power.
6. Maximum voltage is 200 V.
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 63036
Revision: 13-Nov-07
For any questions, contact: foil@vishay.com
www.vishay.com
1
VHD200, VHD144
Vishay Foil Resistors
Bulk Metal
®
Foil Hermetically sealed, Small Package,
Voltage Dividers with TCR Tracking of 0.1 ppm/°C
and Tolerance Match down to 0.001 %
FIGURE 1 - TYPICAL TCR CURVE
+ 150
+ 100
FIGURE 2 - TRIMMING TO VALUES
Δ
R
+ 50
0
- 50
R
(ppm)
Interloop Capacitance
Reduction in Series
Current Path
Before Trimming
Current Path
After Trimming
Trimming Process
Removes this Material
from Shorting Strip Area
Changing Current Path
and Increasing
Resistance
- 100
- 150
- 200
- 50
- 55
- 25
0
+ 20
+ 50
+ 75
+ 100
+ 125
± 2 ppm/°C (+ 25 °C Reference)
Mutual Inductance
Reduction due
to Change in
Current Direction
Ambient Temperature (°C)
Note:
Foil shown in
black,
etched spaces in
white
(For more details, see table 1)
FIGURE 3 - VHD200 AND VHD144 STANDARD PRINTING AND DIMENSIONS
in inches (millimeters)
Standard Printing and Dimensions
0.398
(10.11)
Date Code
Model No .
0.095
(2.41)
Match
Tolerance
5K0000
0.01
%
10K000
VISHAY
0746
VHD200
0.430
(10.92)
Schematic
2)
R
1
R
2
1
0.047
(1.19)
0.75
1)
(19.05)
Low Resistance
Value Indicator
1
2
3
0.435
(11.05)
0.370
(9.40)
0.185
(4.70)
0.146
(3.71)
1
2
3
0.1 (2.54)
Notes
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".
FIGURE 2 - POWER DERATING CURVE
VHD144
- 55 °C
100
Percent of Rated Power (%)
+ 70
Percent of Rated Power (%)
- 55 °C
100
VHD200
+ 25
+ 125
75
75
50
50
25
25
0
- 50
0
+ 50
+ 100
+ 150
0
- 50
0
+ 50
+ 100
+ 130
Ambient Temperature (°C)
Ambient Temperature (°C)
www.vishay.com
2
For any questions, contact: foil@vishay.com
Document Number: 63036
Revision: 13-Nov-07
VHD200, VHD144
Bulk Metal
®
Foil Hermetically sealed, Small Package,
Vishay Foil Resistors
Voltage Dividers with TCR Tracking of 0.1 ppm/°C
and Tolerance Match down to 0.001 %
TABLE 2 - GLOBAL PART NUMBER INFORMATION
NEW GLOBAL PART NUMBER: Y0076V0058QT9L (preferred part number format)
DENOTES PRECISION
Y
RESISTANCE VALUE CODE
VCODE
TOLERANCE MATCH
S
= 0.001 %
V
= 0.005 %
T
= 0.01 %
Q
= 0.02 %
A
= 0.05 %
B
= 0.1 %
D
= 0.5 %
F
= 1.0 %
AER*
0
= standard
9
= lead (Pb)-free
1 - 999
= custom
Y
0
0
7
6
V
0
0
5
8
Q
T
9
L
PRODUCT CODE
0076
= VHD144
5076
= VHD200
ABSOLUTE
TOLERANCE
S
=
V
=
T
=
Q
=
A
=
B
=
D
=
F
=
± 0.001 %
± 0.005 %
± 0.01 %
± 0.02 %
± 0.05 %
± 0.1 %
± 0.5 %
± 1.0 %
PACKAGING
L
= bulk pack
FOR EXAMPLE: ABOVE GLOBAL ORDER Y0076 V0058 Q T 9 L:
TYPE: VHD144
VALUE: 2K/20K
ABSOLUTE TOLERANCE: ± 0.02 %
TOLERANCE MATCH: 0.01 %
TERMINATION: lead (Pb)-free
PACKAGING: bulk pack
HISTORICAL PART NUMBER: VHD144T 2K/20K TCR2 Q T B (will continue to be used)
VHD144
MODEL
VHD144
VHD200
T
TERMINATION
T
= lead (Pb)-free
None = tin/lead alloy
2K/20K
OHMIC VALUE
R
1
= 2.0 kΩ
R
2
= 20.0 kΩ
TCR2
TCR
Characteristic
Q
ABSOLUTE
TOLERANCE
V
=
T
=
Q
=
A
=
B
=
D
=
F
=
± 0.005 %
± 0.01 %
± 0.02 %
± 0.05 %
± 0.1 %
± 0.5 %
± 1.0 %
T
TOLERANCE
MATCH
S
= 0.001 %
V
= 0.005 %
T
= 0.01 %
Q
= 0.02 %
A
= 0.05 %
B
= 0.1 %
D
= 0.5 %
F
= 1.0 %
B
PACKAGING
B
= bulk pack
Note
* For non-standard requests, please contact application engineering.
Document Number: 63036
Revision: 13-Nov-07
For any questions, contact: foil@vishay.com
www.vishay.com
3
Legal Disclaimer Notice
Vishay
Disclaimer
All product specifications and data are subject to change without notice.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf
(collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein
or in any other disclosure relating to any product.
Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any
information provided herein to the maximum extent permitted by law. The product specifications do not expand or
otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed
therein, which apply to these products.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this
document or by any conduct of Vishay.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless
otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such
applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting
from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding
products designed for such applications.
Product names and markings noted herein may be trademarks of their respective owners.
Document Number: 91000
Revision: 18-Jul-08
www.vishay.com
1
Power technology
京公网安备 11010802033920号
EEWORLD
