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133
H Series
Vishay Foil Resistors
Document Number: 63006
Revision 09-Mar-05
THROUGH HOLE
For technical questions in the Americas, contact foilsupport1@vishay.com
For technical questions in Asia/Japan/Europe/Africa/Israel, contact foilsupport2@vishay.com
• ISRAEL: foilsales.israel@vishay.com • FRANCE/SWITZERLAND/SOUTHERN EUROPE: foilsales.eusouth@vishay.com • AMERICAS: foilsales.usa@vishay.com
• ASIA/JAPAN: foilsales.asia@vishay.com • UK/HOLLAND/SCANDINAVIA: foilsales.eunorth@vishay.com • GERMANY/CZECH REPUBLIC/AUSTRIA: foilsales.eucentral@vishay.com
SALES
Bulk Metal® Foil Technology
Hermetically Sealed Resistors, Metrology/Laboratory
FEATURES
•Nominal Temperature Coefficient of Resistance:
+ 0.6ppm/°C (0°C to + 25°C); – 0.6ppm/°C (+ 25°C to
+ 60°C);
+ 2.2ppm/°C (– 55°C to + 25°C); – 1.8ppm/°C (+ 25°C to
+ 125°C)
•Load-Life Stability: 0.002% Max ∆R at 0.1 W and + 60°C,
no burn-in.
•Power Rating: 0.3 to 2.5 watt at + 25°C (depending on
model).
•Resistance Tolerance (Initial Resistance Accuracy):
± 0.001% tightest.
•Resistance Range: 5 Ω to 1M84 Ω.
•Current Noise: < 0.010µV (RMS)/Volt of Applied Voltage.
•Thermal EMF: 0.1µV/°C Max; 0.05µV/°C Typ; VHP202,
1µV/W.
•The most precise and stable resistors available.
•Impervious to harmful environments — oil filled.
FIGURE 1 - STANDARD IMPRINTING AND DIMENSIONS
LS
Model
Number
VISHAY
XXXX
VHP202
ST
H
L
Date Code
W
Front View Rear View
Lead Material
#22 AWG Round
Solder Coated Copper
Resistance
Value Code
Tolerance
Serial No.
100R01
0.01%
XXXX
06
Week
01
Year
LL
Lead Material #22 AWG
Round Solder Coated Copper
Tolerance
Model No.
Resistance
Value Code
Date Code
10
Week
01
Year
VISHAY
XXXX
VHA412
100R01 0.005%
D
LLL
Please specify Vishay H Series resistors as follows: (See Table 2 for details).
Example: VHP202 100R01 0.005%
MODEL NO. RESISTANCE VALUE TOLERANCE
Resistance Value, in ohms, is expressed by a series of 6 characters, 5 of which represent significant digits while the 6th is a dual purpose
letter that designates both the multiplier and the location of the comma or decimal.
RESISTANCE LETTER MULTIPLIER
RANGE* DESIGNATOR FACTOR EXAMPLE
5Ω to < 1KΩRx 1 100R01 = 100.01Ω
1KΩ to < 1MΩKx 10
315K231 = 15,231Ω
1MΩ to 1M 84ΩMx 10
61M500 = 1,500,000Ω
TABLE 1 - ORDERING INFORMATION
The H series resistors are oil filled, hermetically sealed ultra
precision resistors. The function of hermetic sealing is to
eliminate the ingress of moisture and oxygen both of which
play a roll in the long term degradation of unsealed resistors.
A further enhancement in both short and long term stability is
achieved by oil filling. The oil also acts as a thermal conductor
allowing the device to accept short periods of overload without
degradation.
With accuracies of ± 0.001% and a resistance range from
5 ohms to 1.84 megohms and long term shelf life of less than
5ppm, these devices are virtually secondary standards that
can be carried in sets for daily or periodic calibration of factory
measurement systems.
Product may not
be to scale
Document Number: 63006
Revision 09-Mar-05
www.vishay.com
134
H Series
Vishay Foil Resistors
THROUGH HOLE
For technical questions in the Americas, contact foilsupport1@vishay.com
For technical questions in Asia/Japan/Europe/Africa/Israel, contact foilsupport2@vishay.com
• ISRAEL: foilsales.israel@vishay.com • FRANCE/SWITZERLAND/SOUTHERN EUROPE: foilsales.eusouth@vishay.com • AMERICAS: foilsales.usa@vishay.com
• ASIA/JAPAN: foilsales.asia@vishay.com • UK/HOLLAND/SCANDINAVIA: foilsales.eunorth@vishay.com • GERMANY/CZECH REPUBLIC/AUSTRIA: foilsales.eucentral@vishay.com
SALES
+100
+75
+50
+25
0–50 –25 0 +25 +50 +75 +100 +125 +150 +175
Ambient Temperature (°C)
Percent of Rated Power
–55°C
Bulk Metal® Foil Technology
Hermetically Sealed Resistors, Metrology/Laboratory
TABLE 2 - MODEL SELECTION
MODEL RESISTANCE STANDARD RESISTANCE MAXIMUM POWER AVERAGE CONSTRUCTION DIMENSIONS3
NUMBER RANGE TOLERANCE WORKING RATING WEIGHT BRIEF
(Ω)TIGHTEST LOOSEST VOLTAGE2AT +25°CIN GRAMS Inches mm
VHP202 5 to 100K 300 0.3 W 1.4 W: 0.185 ±0.020 4.70 ±0.51
>100K to 150K 0.2 W L: 0.435 ±0.020 11.05 ±0.51
H: 0.430 ±0.020** 10.92 ±0.51
LL: 1.000 ±0.125 25.4 ±3.18
LS: 0.150 ±0.01043.81 ±0.25
ST: 0.095 Max 2.41 Max
VHA412 5 to 100K 250 0.3 W 4.6 L: 0.625 ±0.031 15.88 ±0.79
>100K to 150K 0.2 W D: 0.375 ±0.031 9.53 ±0.79
LL: 1.000 Min 25.4 Min
VHA414 5 to 200K 350 0.5 W 7.3 L: 1.000 ±0.031 25.4 ±0.79
>200K to 335K 0.3 W D: 0.375 ±0.031 9.53 ±0.79
LL: 1.000 Min 25.4 Min
VHA512* 5 to 300K 350 0.75 W 6.3 L: 0.625 ±0.031 15.88 ±0.79
>300K to 500K 0.4 W D: 0.500 ±0.031 12.7 ±0.79
LL: 1.000 Min 25.4 Min
VHA516-4* 5 to 400K 500 1.0 W 9.2 L: 1.000 ±0.031 25.4 ±0.79
>400K to 668K 0.5 W D: 0.500 ±0.031 12.7 ±0.79
VHA516-5* 5 to 500K 1.25 W LL: 1.000 Min 25.4 Min
>500K to 835K 0.6 W
VHA516-6* 5 to 600K 1.5 W
>600K to 1M 0.7 W
VHA518-7* 5 to 700K 600 1.75 W 13.5 L: 1.500 ±0.031 38.1 ±0.79
>700K to 1M17 0.8 W D: 0.500 ±0.031 12.7 ±0.79
VHA518-8* 5 to 800K 2.0 W LL: 1.000 Min 25.4 Min
>800K to 1M34 0.9 W
VHA518-9* 5 to 900K 2.25 W
>900K to 1M5 1.0 W
VHA518-10* 5 to 1.0M 2.5 W
>1.0M to 1M67 1.1 W
VHA518-11* 5 to 1.0M 2.5 W
>1.0M to 1M84 1.2 W
1K to
1
±0.001% ±0.1%
500 to <1K ±0.0025% ±0.1%
50Ω to <500Ω±0.005% ±0.1%
30Ω to <50Ω±0.01% ±0.1%
20Ω to <30Ω±0.02% ±0.1%
10Ω to <20Ω±0.05% ±0.1%
5Ω to <10Ω±0.1% ±0.1%
Oil-filled,
tinned copper
leads,
tinned brass
shell,
kovar and
glass
end bells.
Oil-filled,
tinned copper
leads,
nickel shell,
kovar and
glass
header.
FIGURE 2 - POWER DERATING CURVE
*Available in a 4-lead terminal
**0.375 H available
See next page for numbered footnotes
www.vishay.com
135
H Series
Vishay Foil Resistors
Document Number: 63006
Revision 09-Mar-05
THROUGH HOLE
For technical questions in the Americas, contact foilsupport1@vishay.com
For technical questions in Asia/Japan/Europe/Africa/Israel, contact foilsupport2@vishay.com
• ISRAEL: foilsales.israel@vishay.com • FRANCE/SWITZERLAND/SOUTHERN EUROPE: foilsales.eusouth@vishay.com • AMERICAS: foilsales.usa@vishay.com
• ASIA/JAPAN: foilsales.asia@vishay.com • UK/HOLLAND/SCANDINAVIA: foilsales.eunorth@vishay.com • GERMANY/CZECH REPUBLIC/AUSTRIA: foilsales.eucentral@vishay.com
SALES
NOTES:
1. Upper end of resistance range varies with model selected
(i.e. VHP202; the range is to 150Kohms;
VHA518-10, the range is to 1M67 ohms).
2. Not to exceed power rating of resistor.
3. Insulating Sleeve— a special case insulating plastic sleeve
is available on VHA models— specify letter “P” as a suffix to
model number (i.e. VHA412P).
4. 0.200" (5.08mm) lead spacing available— specify VH202J.
5. Maximum is 1.0% A.Q.L. standard for all specifications except
TCR. (For TCR information, see notes 6-10.)
Typical is a designers reference which represents that 85%
of the units supplied, over a long period of time, will be at
least the figure shown or better.
6. Vishay Nominal TCR is defined as the chord slopes of the
relative change of resistance/temperature, expressed in ppm
(parts per million), called (RT) curve from 0°C to + 25°C and
+ 25°C to + 60°C (“Instrument” Range); and from – 55°C to
+ 25°C and + 25°C to + 125°C (“Military” Range). These
specifications and the definition of Nominal TCR apply to all
resistance values including low-value resistors.
7. Vishay Standard TCR Spread is defined as a designers
reference which represents that at least 92% of the units, and
82% of the lots, supplied by Vishay will be within the stated
band centered on the nominal curve. This definition of the
Vishay Standard TCR Spread from Nominal applies to all
resistance values. However, as the resistance value
decreases below 80Ω, the Vishay Standard TCR Spread from
Nominal specification starts to increase. (See Figure 3 in
data sheet “7 Technical Reasons to Specify Vishay Bulk
Metal® Foil Resistive Components.”)
TEMPERATURE COEFFICIENT OF RESISTANCE
Nominal TCR6
(See Fig. 1 and 2 in data sheet “7 Technical Reasons to
Specify Vishay Bulk Metal® Foil Resistive Components.”)
Standard TCR Spread from Nominal7
(See Fig. 5 and 6 in data sheet “7 Technical Reasons to
Specify Vishay Bulk Metal® Foil Resistive Components.”)
Maximum TCR Spread from Nominal8
(See Fig. 5 and 6 in data sheet “7 Technical Reasons to
Specify Vishay Bulk Metal® Foil Resistive Components.”)
Selected9 TCR Tracking10 (Closest Spread)
Stability14
Load Life at 2,000 hrs.
Shelf Life
Current Noise
High Frequency Operation
Rise/Decay Time
Inductance (L)11
Capacitance (C)
Voltage Coefficient
Thermal EMF13
Hermeticity
+ 0.6ppm/°C (0°C to + 25°C)
– 0.6ppm/°C (+ 25° to + 60°C)
+ 2.2ppm/°C(– 55°C to + 25°C)
– 1.8ppm/°C(+ 25°C to + 125°C)
± 1.5ppm/°C(0°C to + 25°C and + 25°C to + 60°C)
± 2.0ppm/°C(– 55°C to + 25°C and + 25°C to + 125°C)
± 2.5ppm/°C(0°C to + 25°C and + 25°C to + 60°C)
± 2.3ppm/°C(– 55°C to + 25°C and + 25°C to + 125°C)
0.5ppm/°C
± 0.002% maximum ∆R@ 0.1 Watt per chip and at + 60°C
± 5ppm (0.0005%) Maximum ∆R after 1 year
± 10ppm (0.001%) Maximum ∆R after 3 years
< 0.010µV (RMS)/Volt of applied voltage (– 40dB)
1.0 ns at 1KΩ
0.1µH maximum; 0.08µH typical5
1.0pF maximum; 0.5pF typical5
< 0.1ppm/V12
0.1µV/°C Maximum; 0.05µV/°C Typical; 1µV/watt Maximum
10–7 Atmospheric cc/sec Maximum
TABLE 3 - “H” SERIES SPECIFICATIONS5
Bulk Metal® Foil Technology
Hermetically Sealed Resistors, Metrology/Laboratory
8. Vishay Maximum TCR Spread is defined as the 3 σ (Sigma)
limit of a normal Gaussian distribution (99.73% of a production
lot) which is within a band, centered on the nominal curve.
This Vishay Maximum TCR Spread is no greater than
± 2.5ppm/°C from nominal throughout the full temperature
range. This definition of the Vishay Maximum TCR Spread
from Nominal applies to all resistance values. However,
as the resistance value decreases below 80 Ω, the Vishay
maximum TCR Spread from Nominal specification starts to
increase. (See Figure 3 in data sheet “7 Technical Reasons
to Specify Vishay Bulk Metal® Foil Resistive Components.”)
9. Selected TCR Tracking is available for specially ordered lots
of resistors. The selected TCR tracking can be 3, 2, 1 and as
close as 0.5ppm/°C throughout the full temperature range.
10. TCR tracking is a measure of the similarity of resistance value
change in two or more resistors which are undergoing the
same temperature changes. Tracking could be expressed as
the difference in the temperature coefficients of the resistors,
expressed in ppm/°C as (∆R1/R1 – ∆R2/R2) x 10-6/∆T°C. When
a number of resistors are referenced to a nominal TCR, the
spread or envelope around the nominal would be the
difference. If the spread is ± 1.5ppm/°C about a nominal, the
tracking, as defined above, will be 3ppm/°C.
11. Inductance (L) due mainly to the leads.
12.The resolution limit of existing test equipment (within the
measurement capability of the equipment, or “essentially
zero.”)
13. µV/°C relates to EMF due to lead temperature difference and
µV/watt due to power applied to the resistor.
14. Load life ∆R max. can be reduced through burn-in procedure.
