H Series
Vishay Foil Resistors
Hermetically Sealed High Precision Bulk Metal
®
Foil Technology
Resistors with TCR of ± 2 ppm/°C, Tolerance of ± 0.001 % and
Load Life Stability of ± 0.005 %
FEATURES
•
Temperature coefficient of resistance (TCR):
± 2 ppm/°C typical
(- 55 °C to + 125 °C, + 25 °C ref.)
•
Power rating: 0.3 to 2.5 W at + 25 °C
(depending on model - see table 2)
•
Tolerance: to ± 0.001 %
Any value at any tolerance available within resistance range
Pb-free
Available
RoHS*
COMPLIANT
•
Load life stability: ± 0.005 % (70 °C for 2000 h at half rated
power)
•
Shelf life stability: ± 2 ppm for at least 10 years
•
Resistance range: 5
Ω
to 1.84 MΩ (higher or lower values
of resistance available)
•
Electrostatic discharge (ESD) above 25 000 V
•
Rise time: 1.0 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 inductive, non capacitive design
•
Non hot spot design
•
Terminal finishes available:
lead (Pb)-free
tin/lead alloy
INTRODUCTION
The H series resistors are oil-filled, hermetically sealed ultra
precision resistors.
The hermetic sealing eliminates the ingress of moisture and
oxygen, while the oil acts as a thermal conductor, thus
eliminating long term degradation elements of unsealed
resistors, while at the same time allowing the device to
accept short periods of overload without degradation.
Vishay’s Bulk
Foil outperforms all other resistor
technologies available today for applications that require
precision and stability. When combined with the hermetic
sealing and oil filling, the H series resistors become
one of
the most precise and stable resistors available.
With accuracies of 0.001 %, a resistance range from 5
Ω
to 1.84 MΩ, and long term shelf life of less than 2 ppm,
these devices are virtually secondary standards that can be
carried in sets for daily or periodic calibration of factory
measurement equipment.
Metal
®
•
Impervious to harmful environments - oil-filled
•
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 H series (Z)
Note
Load life stability can be considerably improved through in-house
oriented tests
TABLE 1 - TOLERANCE AND TCR VERSUS
RESISTANCE VALUE
RESISTANCE
VALUE (Ω)
80 to < 1M84
50 to < 80
5 to < 50
TYPICAL TCR AND MAX. SPREAD
(- 55 °C to + 125 °C, + 25 °C ref.)
(ppm/°C)
± 2 ± 2.5
± 2 ± 3.5
± 2 ± 4.5
FIGURE 1 - POWER DERATING CURVE
Percent of Rated Power
+ 100
+ 75
+ 50
+ 25
0
- 50
- 25
0
+ 25 + 50 + 75 + 100 + 125 + 150 + 175
- 55 °C
Ambient Temperature (°C)
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 63006
Revision: 14-Nov-07
For any questions, contact: foil@vishay.com
www.vishay.com
1
H Series
Vishay Foil Resistors
Hermetically Sealed High Precision Bulk Metal
®
Foil
Technology Resistors with TCR of ± 2 ppm/°C, Tolerance
of ± 0.001 % and Load Life Stability of ± 0.005 %
FIGURE 3 - FOIL RESISTOR TYPICAL
TCR CURVE
+ 150
+ 100
FIGURE 2 - TRIMMING TO VALUES
(Conceptual Illustration)
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
Δ
R
+ 50
C Alloy 2 ppm/°C
0
R
(ppm)
Mutual Inductance
Reduction due
to Change in
Current Direction
- 50
- 100
- 150
- 200
- 50
- 55
- 25
0
+ 25
+ 50
+ 75
+ 100
2 ppm/°C
+ 125
Temperature (°C)
Note:
Foil shown in
black,
etched spaces in
white
TABLE 2 - MODEL SELECTION
MODEL
NUMBER
RESISTANCE
RANGE
(Ω)
STANDARD RESISTANCE
MAXIMUM POWER AVERAGE
TOLERANCE
CONSTRUCTION
WEIGHT
WORKING RATING
BRIEF
TIGHTEST LOOSEST VOLTAGE
2)
at + 25 °C
(g)
(Ω)
(%)
DIMENSIONS
3)
INCHES
mm
4.70 ± 0.51
11.05 ± 0.51
10.92 ± 0.51
25.4 ± 3.18
3.81 ± 0.25
2.41 max.
15.88 ± 0.79
9.53 ± 0.79
25.4 min.
25.4 ± 0.79
9.53 ± 0.79
25.4 min.
15.88 ± 0.79
12.7 ± 0.79
25.4 min.
VHP202
5 to 100K
> 100K to 150K
300
0.3 W
0.2 W
1.4
W: 0.185 ± 0.020
L: 0.435 ± 0.020
Oil-filled, tinned
copper leads, nickel H: 0.430 ± 0.020**
LL: 1.000 ± 0.125
shell, kovar and
LS: 0.150 ± 0.010
4)
glass header
ST: 0.095 max.
L: 0.625 ± 0.031
D: 0.375 ± 0.031
LL: 1.000 min.
L: 1.000 ± 0.031
D: 0.375 ± 0.031
LL: 1.000 min.
L: 0.625 ± 0.031
D: 0.500 ± 0.031
LL: 1.000 min.
Oil-filled,
tinned copper leads, L: 1.000 ± 0.031
tinned brass shell, D: 0.500 ± 0.031
kovar and
LL: 1.000 min.
glass end bells
VHA412
5 to 100K
> 100K to 150K
5 to 200K
> 200K to 335K
5 to 300K
> 300K to 500K
5 to 400K
> 400K to 668K
5 to 500K
> 500K to 835K
5 to 600K
> 600K to 1M
1K to
1)
250
0.3 W
0.2 W
0.5 W
0.3 W
0.75 W
0.4 W
1.0 W
0.5 W
1.25 W
0.6 W
1.5 W
0.7 W
1.75 W
0.8 W
2.0 W
0.9 W
2.25 W
1.0 W
2.5 W
1.1 W
2.5 W
1.2 W
4.6
VHA414
± 0.001 ± 0.1
350
7.3
500 to < 1K ± 0.0025 ± 0.1
VHA512*
50 to < 500
30 to < 50
VHA516-4*
VHA516-5*
VHA516-6*
VHA518-7*
20 to < 30
10 to < 20
5 to < 10
± 0.005 ± 0.1
± 0.01 ± 0.1
± 0.02 ± 0.1
± 0.05 ± 0.1
± 0.1 ± 0.1
500
350
6.3
9.2
25.4 ± 0.79
12.7 ± 0.79
25.4 min.
5 to 700K
> 700K to 1M17
5 to 800K
VHA518-8*
> 800K to 1M34
5 to 900K
VHA518-9*
> 900K to 1M5
5 to 1.0M
VHA518-10*
> 1.0M to 1M67
5 to 1.0M
VHA518-11*
> 1.0M to 1M84
600
13.5
L: 1.500 ± 0.031
D: 0.500 ± 0.031
LL: 1.000 min.
38.1 ± 0.79
12.7 ± 0.79
25.4 min.
Notes
* Available in a 4-lead terminal
** 0.375 H available
See next page for numbered footnotes
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2
For any questions, contact: foil@vishay.com
Document Number: 63006
Revision: 14-Nov-07
H Series
Hermetically Sealed High Precision Bulk Metal
®
Foil
Vishay Foil Resistors
Technology Resistors with TCR of ± 2 ppm/°C, Tolerance
of ± 0.001 % and Load Life Stability of ± 0.005 %
FIGURE 4 - STANDARD IMPRINTING AND DIMENSIONS
Front View
L
VISHAY
XXXX
VHP202
Rear View
W
100R01
0.01%
XXXX
ST
Resistance
Value
Code
Tolerance
Serial
No.
Lead Material #22 AWG
Round Solder Coated Copper
D
Date Code
07
10
Year
Week
Model
No.
VHA412
100R01 0.005%
VISHAY
XXXX
L
LL
H
Model
Number
Date Code
07
06
Year
Week
LS
LL
Lead Material
#22 AWG Round
Solder Coated Copper
Resistance
Value
Code
Tolerance
TABLE 3 - “H” SERIES SPECIFICATIONS
Stability
8)
Load life at 2000 h
Shelf life
Current Noise
High Frequency Operation
Rise time
Inductance (L)
5)
Capacitance (C)
Voltage Coefficient
Thermal EMF
7)
Hermeticity
1.0 ns without ringing
0.1 µH maximum; 0.08 µH typical
1.0 pF maximum; 0.5 pF typical
< 0.1 ppm/V
6)
0.1 µV/°C maximum; 0.05 µV/°C typical; 1 µV/W maximum
10
-7
atmospheric cc/s maximum
± 0.002 % maximum
ΔR
at 0.1 W per chip and at + 60 °C
± 2 ppm (0.0002 %) for at least 10 years
< - 40 dB
Notes
1. Upper end of resistance range varies with model selected (i.e. VHP202; the range is to 150 kΩ; VHA518-10, the range is to 1M67
Ω)
per table 2
2. Not to exceed power rating of resistor
3. Insulating sleeve - a special case insulating plastic sleeve is available on VHA models. See table 4 for instructions on how to specify
4. 0.200" (5.08 mm) lead spacing available - specify VH202J
5. Inductance (L) due mainly to the leads
6. The resolution limit of existing test equipment (within measurement capability of the equipment, or “essentially zero”)
7. µV/°C relates to EMF due to lead temperature difference and µV/W due to power applied to the resistor
8. Load life
ΔR
maximum. Can be reduced through in-house oriented processes
Document Number: 63006
Revision: 14-Nov-07
For any questions, contact: foil@vishay.com
www.vishay.com
3
H Series
Vishay Foil Resistors
Hermetically Sealed High Precision Bulk Metal
®
Foil
Technology Resistors with TCR of ± 2 ppm/°C, Tolerance
of ± 0.001 % and Load Life Stability of ± 0.005 %
TABLE 4 - GLOBAL PART NUMBER INFORMATION
NEW GLOBAL PART NUMBER: Y0019120K500V9L (preferred part number format)
DENOTES PRECISION
Y
VALUE
R
=
Ω
K
= kΩ
M
= MΩ
AER*
0
= standard
1
= tin/lead with plastic sleeve
9
= lead (Pb)-free
19
= lead (Pb)-free with plastic sleeves
2 - 999
= custom
Y
0
0
1
9
1
2
0
K
5
0
0
V
9
L
PRODUCT CODE
0024
= VHP202 and VH202C
0019
= VHA412
0025
= VHA414
0023
= VHA512
0104
= VHA516-4
0105
= VHA516-5
0106
= VHA516-6
0107
= VHA518-7
0108
= VHA518-8
0109
= VHA518-9
0110
= VHA518-10
0111
= VHA518-11
RESISTANCE TOLERANCE
S
= ± 0.001 %
U
= ± 0.002 %
X
= ± 0.0025 %
V
= ± 0.005 %
T
= ± 0.01 %
Q
= ± 0.02 %
A
= ± 0.05 %
B
= ± 0.1 %
C
= ± 0.25 %
D
= ± 0.5 %
F
= ± 1.0 %
PACKAGING
L
= bulk pack
FOR EXAMPLE: ABOVE GLOBAL ORDER Y0019 120K500 V 9 L:
TYPE: VHA412
VALUE: 120.5 kΩ
ABSOLUTE TOLERANCE: ± 0.005 %
TERMINATION: lead (Pb)-free
PACKAGING: bulk pack
HISTORICAL PART NUMBER: VHA412T 120K50 V B (will continue to be used)
VHA412
MODEL
VHP202 and VH202C
VHA412
VHA414
VHA512
VHA516-4
VHA516-5
VHA516-6
VHA518-7
VHA518-8
VHA518-9
VHA518-10
VHA518-11
Note
* For non-standard requests, please contact application engineering.
T
TERMINATION
T
= lead (Pb)-free
None
= tin/lead
PLASTIC SLEEVE
P
= plastic sleeve
None
= standard
120K50
OHMIC VALUE
120K50
= 120.5 kΩ
V
TOLERANCE
S
= ± 0.001 %
U
= ± 0.002 %
X
= ± 0.0025 %
V
= ± 0.005 %
T
= ± 0.01 %
Q
= ± 0.02 %
A
= ± 0.05 %
B
= ± 0.1 %
C
= ± 0.25 %
D
= ± 0.5 %
F
= ± 1.0 %
B
PACKAGING
B
= bulk pack
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4
For any questions, contact: foil@vishay.com
Document Number: 63006
Revision: 14-Nov-07
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
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