Page 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 %
FEATURES
• Temperature coefficient of resistance (TCR):
± 2 ppm/°C typical
(- 55 °C to + 125 °C, + 25 °C ref.)
RoHS*
COMPLIANT
Any value at any tolerance available within resistance range
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 Metal
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.
®
Foil outperforms all other resistor
• Power rating: 0.3 to 2.5 W at + 25 °C
(depending on model - see table 2)
• Tolerance: to ± 0.001 %
• 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
• 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 [email protected]
• For better performances, please see H series (Z)
Note
Load life stability can be considerably improved through in-house
oriented tests
Pb-free
Available
TABLE 1 - TOLERANCE AND TCR VERSUS
FIGURE 1 - POWER DERATING CURVE
RESISTANCE VALUE
RESISTANCE
VAL UE (
80 to < 1M84 ± 2 ± 2.5
* Pb containing terminations are not RoHS compliant, exemptions may apply
Ω
)
50 to < 80 ± 2 ± 3.5
5 to < 50 ± 2 ± 4.5
TYPICAL TCR AND MAX. SPREAD
(- 55 °C to + 125 °C, + 25 °C ref.)
(ppm/°C)
- 55 °C
+ 100
+ 75
+ 50
+ 25
0
Percent of Rated Power
- 50 - 25 0 + 25 + 50 + 75 + 100 + 125 + 150 + 175
Ambient Temperature (°C)
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Page 2
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 2 - TRIMMING TO VALUES
(Conceptual Illustration)
Interloop Capacitance
Reduction in Series
Current Path
Mutual Inductance
Reduction due
to Change in
Current Direction
Note: Foil shown in black, etched spaces in white
TABLE 2 - MODEL SELECTION
MODEL
NUMBER
VHP202
VHA412
VHA414
VHA512*
VHA516-4*
VHA516-5*
VHA516-6*
VHA518-7*
VHA518-8*
VHA518-9*
VHA518-10*
VHA518-11*
RESISTANCE
RANGE
(
Ω
5 to 100K
> 100K to 150K
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
5 to 700K
> 700K to 1M17
5 to 800K
> 800K to 1M34
5 to 900K
> 900K to 1M5
5 to 1.0M
> 1.0M to 1M67
5 to 1.0M
> 1.0M to 1M84
Notes
* Available in a 4-lead terminal
** 0.375 H available
See next page for numbered footnotes
STANDARD RESISTANCE
)
TIGHTEST
1K to
500 to < 1K
50 to < 500
30 to < 50
20 to < 30
10 to < 20
5 to < 10
After Trimming
TOLERANCE
(
Ω
)
1)
± 0.0025 ± 0.1
Removes this Material
from Shorting Strip Area
Changing Current Path
LOOSEST
(%)
± 0.001 ± 0.1
± 0.005 ± 0.1
± 0.01 ± 0.1
± 0.02 ± 0.1
± 0.05 ± 0.1
± 0.1 ± 0.1
Current Path
Before Trimming
Trimming Process
and Increasing
Resistance
MAXIMUM
WORKING
VOLTAGE
300
250
350
350
500
600
2)
at + 25 °C
FIGURE 3 - FOIL RESISTOR TYPICAL
TCR CURVE
+ 150
+ 100
(ppm)
POWER
RATING
0.3 W
0.2 W
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
+ 50
Δ
R
0
R
- 50
- 100
- 150
- 200
- 50 - 25 0 + 25 + 50 + 75 + 100 + 125
- 55
AVERAGE
WEIGHT
(g)
CONSTRUCTION
BRIEF
Oil-filled, tinned
copper leads, nickel
1.4
shell, kovar and
glass header
4.6
7.3
6.3
Oil-filled,
tinned copper leads,
9.2
tinned brass shell,
kovar and
glass end bells
13.5
C Alloy 2 ppm/°C
Temperature (°C)
INCHES mm
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
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
D: 0.500 ± 0.031
LL: 1.000 min.
L: 1.500 ± 0.031
D: 0.500 ± 0.031
LL: 1.000 min.
DIMENSIONS
4)
2 ppm/°C
3)
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.
38.1 ± 0.79
12.7 ± 0.79
25.4 min.
www.vishay.com For any questions, contact: [email protected] Document Number: 63006
2 Revision: 14-Nov-07
Page 3
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 Rear View
H
Date Code
06
07
Week
Year
L
VISHAY
XXXX
VHP202
LS
Model
Number
W
ST
Lead Material
#22 AWG Round
Solder Coated Copper
100R01
0.01%
XXXX
Resistance
Value Code
Tolerance
Serial No.
LL
Date Code
07
Year
Model No.
Resistance
Value Code
TABLE 3 - “H” SERIES SPECIFICATIONS
Stability
Load life at 2000 h ± 0.002 % maximum ΔR at 0.1 W per chip and at + 60 °C
Shelf life ± 2 ppm (0.0002 %) for at least 10 years
Current Noise < - 40 dB
High Frequency Operation
Rise time 1.0 ns without ringing
Inductance (L)
Capacitance (C) 1.0 pF maximum; 0.5 pF typical
Voltage Coefficient < 0.1 ppm/V
Thermal EMF
Hermeticity 10
8)
5)
7)
0.1 µH maximum; 0.08 µH typical
6)
0.1 µV/°C maximum; 0.05 µV/°C typical; 1 µV/W maximum
-7
atmospheric cc/s maximum
Lead Material #22 AWG
Round Solder Coated Copper
D
10
Week
VISHAY
XXXX
VHA412
100R01 0.005%
LLL
Tolerance
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. 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
"
(5.08 mm) lead spacing available - specify VH202J
Δ
R maximum. Can be reduced through in-house oriented processes
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Page 4
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 VALUE AER*
YR = Ω
0191 0K52Y0 V90 L0
PRODUCT CODE RESISTANCE TOLERANCE PACKAGING
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
K = kΩ
M = MΩ
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 %
0 = standard
1 = tin/lead with plastic sleeve
9 = lead (Pb)-free
19 = lead (Pb)-free with plastic sleeves
2 - 999 = custom
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 T 120K50 V B
MODEL TERMINATION PLASTIC SLEEVE OHMIC VALUE TOLERANCE PACKAGING
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 = lead (Pb)-free
None = tin/lead
P = plastic sleeve
None = standard
120K50 = 120.5 kΩ 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 = bulk pack
www.vishay.com For any questions, contact: [email protected] Document Number: 63006
4 Revision: 14-Nov-07
Page 5
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 www.vishay.com
Revision: 18-Jul-08 1
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