HZ Series (Z-Foil)
Vishay Foil Resistors
Hermetically Sealed Ultra High Precision Z-Foil Technology
Resistors with TCR of ± 0.2 ppm/°C, Tolerance of ± 0.001 % and
Load Life Stability of ± 0.005 %
FEATURES
•
Temperature coefficient of resistance (TCR):
± 0.2 ppm/°C typical (- 55 °C to + 125 °C,
+ 25 °C ref.)
•
Power coefficient “ΔR due to self heating”:
5 ppm at rated power
•
Tolerance:
to ± 0.001 %
Any value available within resistance range
•
Load life stability ± 0.002 % maximum
ΔR
(60 °C for
2000 h at 0.1 W per chip)
•
Electrostatic discharge (ESD) > 25 000 V
•
Resistance range: 5
Ω
to 1.1 MΩ (higher or lower values of
resistance available)
•
Power rating: 0.3 to 2.5 W at + 25 °C (depending on model
- see table 2)
•
Shelf life stability: 2 ppm for at least 10 years
•
Non inductive, non capacitive design
•
Non hot spot design
•
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
•
Terminal finishes available:
lead (Pb)-free
tin/lead alloy
INTRODUCTION
The Z-foil based oil filled, hermetically sealed HZ-series
resistors represent an industry breakthrough. 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.
The Z-foil technology provides a significant reduction of the
resistive components sensitivity to ambient temperature
variations (TCR) and applied power changes (PCR). When
combined with the hermetic sealing and oil filling, the
H-series resistors become
the most precise and stable
resistors available.
With accuracies of ± 0.001 % and a resistance range from
5
Ω
to 1.1 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.
The VHA series is also available with laboratory and
metrology level precision and long term stability with
additional in-house oriented process such as: special
TCR plotting, mounted chip stabilization, thermal shock
and bake prior to sealing, combined thermal shock and
power conditioning on finished product, thermal and
power conditioning, component linearity test.
•
Impervious to harmful environments - oil filled
•
For better performances, please contact us
FIGURE 1 - TRIMMING TO VALUES
(Conceptual Illustration)
TABLE 1 - TOLERANCE AND TCR VS.
RESISTANCE VALUE
RESISTANCE VALUE
(Ω)
100 to < 1M1
50 to < 100
5 to < 50
TYPICAL TCR AND
MAX. SPREAD
(- 55 °C to + 125 °C, + 25 °C ref.)
(ppm/°C)
1)
± 0.2 ± 2
± 0.2 ± 3
± 0.2 ± 4
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
Mutual Inductance
Reduction due
to Opposing
Current in
Adjacent Lines
Note:
Foil shown in
black,
etched spaces in
white
Note
1. For lower TCR and for selected TCR tracking, please contact us
Document Number: 63120
Revision: 17-Jun-08
For any questions, contact: foil@vishay.com
www.vishay.com
1
HZ Series (Z-Foil)
Vishay Foil Resistors
Hermetically Sealed Ultra High Precision Z-Foil
Technology Resistors with TCR of ± 0.2 ppm/°C, Tolerance
of ± 0.001 % and Load Life Stability of ± 0.005 %
TABLE 2 - MODEL SELECTION
MODEL
NUMBER
VHP202Z
VHP202ZJ
RESISTANCE
RANGE
(Ω)
10 to 66k
66K to 100K
STANDARD RESISTANCE
MAXIMUM POWER AVERAGE
TOLERANCE
CONSTRUCTION
WEIGHT
WORKING RATING
BRIEF
TIGHTEST LOOSEST VOLTAGE
2)
at + 25 °C
(g)
(Ω)
(%)
300
0.3 W
0.2 W
1.4
Oil-filled, tinned
copper leads, nickel
shell, kovar and
glass header
DIMENSIONS
3)
INCHES
W: 0.185 ± 0.020
L: 0.435 ± 0.020
H: 0.430 ± 0.020**
LL: 1.000 ± 0.125
LS: 0.150 ± 0.010
4)
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.
L: 1.000 ± 0.031
Oil-filled,
D: 0.500 ± 0.031
tinned copper
LL: 1.000 Min.
leads, tinned brass
shell, kovar and
glass end bells
L: 1.500 ± 0.031
D: 0.500 ± 0.031
LL: 1.000 Min.
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.
25.4 ± 0.79
12.7 ± 0.79
25.4 Min.
VHA412Z
10 to 66K
66K to 100K
5 to 120K
> 120K to 200K
5 to 180K
180K to 300K
1K to
1)
± 0.001 ± 0.1
500 to < 1K ± 0.0025 ± 0.1
50 to < 500 ± 0.005 ± 0.1
± 0.01 ± 0.1
30 to < 50
5 to 240K
± 0.02 ± 0.1
20 to < 30
> 240K to 400K 10 to < 20
± 0.05 ± 0.1
5 to 300K
± 0.1 ± 0.1
5 to < 10
> 300K to 500K
5 to 360K
> 360K to 600K
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
VHA414Z
350
7.3
VHA512Z*
350
6.3
VHA516-4Z*
VHA516-5Z*
VHA516-6Z*
VHA518-7Z*
500
9.2
600
5 to 420K
> 420K to 700K
VHA518-8Z* 5 to 480K
> 480K to 800K
VHA518-9Z* 5 to 540K
> 540K to 900K
VHA518-10Z* 5 to 600K
> 600K to 1.0M
VHA518-11Z* 5 to 660K
> 660K to 1.1M
Notes
* Available in a 4-lead terminal: VHA512 please use 302073Z
VHA516 please use 302074Z
VHA518 please use 302075Z
** 0.375 H available
See next page for numbered footnotes
13.5
38.1 ± 0.79
12.7 ± 0.79
25.4 Min.
FIGURE 2 - TYPICAL TCR CURVE Z-FOIL
+ 500
+ 400
+ 300
+ 200
+ 100
∆R
0
R
(ppm)
- 100
- 200
- 300
- 400
- 500
- 55
- 25
0
+ 25
+ 60 + 75
+ 100 + 125
- 0.16 ppm/°C
FIGURE 3 - POWER DERATING CURVE
Percent of Rated Power
+ 100
+ 75
+ 50
+ 25
0
- 55 °C
0.05 ppm/°C
- 0.1 ppm/°C
0.1 ppm/°C
0.14 ppm/°C
0.2 ppm/°C
- 50
- 25
0
+ 25 + 50 + 75 + 100 + 125 + 150 + 175
Ambient Temperature (°C)
Ambient Temperature (°C)
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2
For any questions, contact: foil@vishay.com
Document Number: 63120
Revision: 17-Jun-08
HZ Series (Z-Foil)
Hermetically Sealed Ultra High Precision Z-Foil
Vishay Foil Resistors
Technology Resistors with TCR of ± 0.2 ppm/°C, Tolerance
of ± 0.001 % and Load Life Stability of ± 0.005 %
FIGURE 4 - STANDARD IMPRINTING AND DIMENSIONS
Front View
L
VISHAY
XXXX
VHP202Z
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.
VHA412Z
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 %) after at least 10 years
< 0.010 µV (RMS)/V of applied voltage (- 40 dB)
Notes
1. Upper end of resistance range varies with model selected (i.e. VHP202Z; the range is to 100 kΩ; VHA518-10Z, the range is to 1.0 MΩ) per
Table 2
2. Not to exceed power rating of resistor
3. Insulating sleeve - a special case insulating plastic sleeve is available on VHAZ models - specify letter “P” as a suffix to model number
(i.e. VHA412ZP)
4. 0.200" (5.08 mm) lead spacing available - specify VHP202ZJ
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/° relates to EMF due to lead temperature difference and µV/watt due to power applied to the resistor
8. Load life
ΔR
max. can be reduced through in-house oriented processes
Document Number: 63120
Revision: 17-Jun-08
For any questions, contact: foil@vishay.com
www.vishay.com
3
HZ Series (Z-Foil)
Vishay Foil Resistors
Hermetically Sealed Ultra High Precision Z-Foil
Technology Resistors with TCR of ± 0.2 ppm/°C, Tolerance
of ± 0.001 % and Load Life Stability of ± 0.005 %
TABLE 4 - GLOBAL PART NUMBER INFORMATION
NEW GLOBAL PART NUMBER: Y1750120K500V9L (preferred part number format)
DENOTES PRECISION
Y
VALUE
R
=
Ω
K
= kΩ
M
= MΩ
AER*
0
= standard product, tin/lead termination
1
= with plastic sleeve, tin/lead termination
9
= standard product, lead (Pb)-free termination
19
= with plastic sleeve, lead (Pb)-free termination
Other
= custom
Y
1
7
5
0
1
2
0
K
5
0
0
V
9
L
PRODUCT CODE
6071
= VHP202Z
1748
= VHP202ZJ
1749
= VHA412Z
1751
= VHA414Z
1750
= VHA512Z
1752
= VHA516-4Z
1753
= VHA516-5Z
1754
= VHA516-6Z
1755
= VHA518-7Z
1756
= VHA518-8Z
1757
= VHA518-9Z
1758
= VHA518-10Z
1759
= VHA518-11Z
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 Y1750 120K500 V 9 L:
TYPE: VHA512Z
VALUE: 120.5 kΩ
ABSOLUTE TOLERANCE: ± 0.005 %
TERMINATION: lead (Pb)-free
PACKAGING: bulk pack
HISTORICAL PART NUMBER: VHA512ZT 120K50 V B (will continue to be used)
VHA512Z
MODEL
VHP202Z
VHP202ZJ
VHA412Z
VHA414Z
VHA512Z
VHA516-4Z
VHA516-5Z
VHA516-6Z
VHA518-7Z
VHA518-8Z
VHA518-9Z
VHA518-10Z
VHA518-11Z
Note
* Application engineering release: 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: 63120
Revision: 17-Jun-08
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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1
