VFP4Z82R5000.25% [VISHAY]
RES,4 TERMINALS,METAL FOIL,82.5 OHMS,.25% +/-TOL,-2,2PPM TC;
| 型号： | VFP4Z82R5000.25% |
| 厂家： | 
VISHAY |
| 描述： | RES,4 TERMINALS,METAL FOIL,82.5 OHMS,.25% +/-TOL,-2,2PPM TC |
| 文件： | 总5页 (文件大小：200K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Power Current Sense Resistors
Vishay Foil Resistors
Z-Based Bulk Metal® Foil Technology
Rapid ΔR Stabilization - Low WCR - Low TCR
VHP4Z
VFP4Z
VCS331Z
VCS332Z
VPR247Z
Product may not be to scale
Rapid ΔR stabilization under transient loads, low wattage
coefficient (WCR), and low temperature coefficient (TCR)
are features of this new Z Based Bulk Metal® Foil series of
Current Sense Resistors.
FEATURES
• Rapid ΔR Stabilization under transient loads (see Figure 1)
• Tenfold improvement of Wattage Coefficient of Resistance
(WCR): 4 ppm/W (see Figure 2)
The series should be selected where rapid .R stabilization
and resistance stability under transient power conditions is
required. These products achieve optimum performance
when mounted on a chassis or cooled heat sink. The Z
Based Technology provides extremely low WCR under
defined conditions (see Figure 1 and Figure 2). The low
absolute TCR provided by the Z Based Technology is
measured over the temperature range of - 55 °C to + 125 °C,
+ 25 °C reference (see Figure 3).
• Low Temperature Coefficient of Resistance:
(see Figure 3 and Table 2)
• Thermal Resistance: 6 °C/W
•
Power Rating: 10 watts on heat sink1) at + 25 °C
(see Table 2)
3 watts in free air at + 25 °C (see Table 2)
All of these devices utilizing the Z Based Technology are
provided with a true 4 terminal Kelvin connection. This is a
must for current sensing when the R-value is less than
100 Ω. The VHP4Z and VPR247Z types add the additional
benefit of hermeticity. The welded construction and nitrogen
backfill provide maximum protection against environmental
stresses and insures long term stability. Typical applications
for this new series includes electron beam circuitry, electron
microscopes, fire control radar display systems, high speed
video display, deflection amplifier circuits, constant current
power supplies and forced balance electronic scales.
• Load Life Stability:
0.05 % Max ΔR, 10 W on heat sink at + 25 °C, 2000 hours
0.01 % Max ΔR, 3 W on heat sink at + 25 °C, 2000 hours
0.05 % Max ΔR, 3 W in free air at + 25 °C, 2000 hours
• Current Noise: < 0.01 µV(RMS)/volt of applied voltage
• Thermal EMF: 0.1 µV/°C maximum, 0.05 µV/°C typical
• Non-Inductive design
NOTE:
Custom high power designs can be developed for your
specific applications.
1.Heatsink - Aluminum (6" L x 4" W x 2" H x 0.04" THK)
SALES
• 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 • FRANCE/SWITZERLAND/SOUTHERN EUROPE: foilsales.eusouth@vishay.com • ISRAEL: foilsales.israel@vishay.com
www.vishay.com
1
For technical questions, contact: foil@vishay.com
Document Number: 63086
Revision: 02-Mar-05
Power Current Sense Resistors
Z-Based Bulk Metal® Foil Technology
Rapid R Stabilization - Low WCR - Low TCR
Vishay Foil Resistors
Δ
FIGURE 1 - RAPID STABILIZATION
FIGURE 2 - POWER COEFFICIENT (WCR)
15
60
40
10
5
20
0
0
- 5
- 10
- 15
- 20
- 40
- 60
0
20
40
60
80 100 120 140 160 180 200
TIME IN SECONDS
0
1
2
5
8
10
APPLIED POWER IN WATTS
RESISTANCE CHANGE UNDER LOAD AT 10 WATTS
MOUNTED ON COOLED HEAT SINK HELD AT + 25 °C
RESISTANCE CHANGE VS APPLIED POWER
MOUNTED ON COOLED HEAT SINK HELD AT + 25 °C
FIGURE 3 - TEMPERATURE COEFFICIENT
RESISTANCE
FIGURE 4 - POWER DERATING CURVE
250
200
150
+ 200
- 55 °C
+ 25 °C
+ 100
+ 75
+ 50
+ 25
0
+ 8ppm/°C
100
50
0
- 50
- 100
- 150
- 50
0
+ 50
+ 100
+ 150
+ 200
- 200
- 200
- 250
AMBIENT TEMPERATURE
- 55
+ 25
AMBIENT TEMPERATURE (°C)
+ 125
NO LOAD APPLIED
Kelvin, 4-terminal, connections are utilized for these low
ohmic value products to measure a precise voltage drop
across the resistive element. In these applications the
contact resistance, lead resistance, and their TCR effect may
be greater than that of the element itself and could cause
significant errors if the standard 2-terminal connection is
used. Figure 5 shows a high impedance measurement
system where r5 approaches infinity and Im approaches zero
resulting in negligible IR drop through r3 and r4 which
negates their lead resistance and TCR effect. With the
voltage sense leads E1 and E2 inside of r1 and r2 the
resistance and TCR effect of the current leads, I1 and I2 are
negated and only the resistance and TCR of the element R
are sensed. This method of measurement is essential for
precise current sensing.
FIGURE 5 - KELVIN CONNECTION
R
r1
r2
I1
I2
E2
E1
r3
r4
Im
0
8
r5
SALES
• 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 • FRANCE/SWITZERLAND/SOUTHERN EUROPE: foilsales.eusouth@vishay.com • ISRAEL: foilsales.israel@vishay.com
Document Number: 63086
Revision: 02-Mar-05
For technical questions, contact: foil@vishay.com
www.vishay.com
2
Power Current Sense Resistors
Z-Based Bulk Metal® Foil Technology
Rapid R Stabilization - Low WCR - Low TCR
Vishay Foil Resistors
Δ
FIGURE 6 - STANDARD IMPRINTING AND DIMENSIONS
VHP4Z
Standard Marking
Arrangement
0.770 (19.56)
max dia
Mounting
VISHAY
VHP-3Z
21K500
0.01 %
9802
Hole
Model No.
Res. Val.
Res. Tol.
TO-3 cap
TO-3 base
I
I
2
1
Date Code
Ex: 98 02
Year Week
0.040 (1.00) dia
0.005 ( 0.13
)
0.43 (10.92)
0.01 ( 0.25)
0.222
(5.64)
I
I
2
E
1
2
1.00 (25.4)
0.005 ( 0.13)
E
1
E
1
E
2
0.156 dia (3.9)
0.005 ( 0.13)
VPR247Z
VFP4Z
+ 0.004
- 0.008
+ 0.1
0.040 0.005 (1.02 0.13)
0.276
(7.0
)
- 0.2
0.690 0.005
(17.53 0.13)
1.575 0.016 (40 0.4)
1.181 0.016 (30 0.4)
0.120 0.005
(3.05 0.13)
0.125 0.005
(5.46 0.13)
0.140 0.005
0.118 (3)
0.197 (5)
(3.56 0.13)
(Dia. Thru Hole)
0.150 0.004
(3.8 0.1)
VISHAY
VFP-4Z
VISHAY
VPR247Z
XXXX
0.820 0.005
Date Code
01 10
Year Week
(20.83 0.13)
0.787 0.016
(20 0.4)
(Value)
(Tol.)
(Date Code)
0R2000 1 %
0.394 0.008
(10 0.2)
0.010 (0.254) max
Sleeve Extension
0.500 Min
(12.70)
Tolerance
Lead Dia.
Resistance
Value
1.00 Min.
(25.4 Min.)
0.025 (0.633)
Solder Coated
Copper
I1 E1 E2 I2 Gold Plated
0.200 0.005
0.120 0.005
(3.05 0.13)
Copper Leads
0.025 Dia (0.633)
(5.08 0.13)
0.100 0.005
(2.54 0.13)
S
I
E
E
I
2
1
1
2
LS
0.200 [x3] (5.08)
VCS332Z
VCS331Z
0.138 (3.5)
NOMINAL
0.138 (3.5)
NOMINAL
1.340 0.008 (34.0 0.2)
1.340 0.008 (34.0 0.2)
0.087 (2.2)
MAXIMUM
0.087 (2.2)
MAXIMUM
0.210 (5.33)
MAXIMUM
0.701 0.008
(17.8 0.2)
0.701 0.008
(17.8 0.2)
0.210 (5.33)
MAXIMUM
0.197 0.008
(5.0 0.2)
1.024 (26.0)
MAXIMUM
1.063 (27.0)
MAXIMUM
VISHAY
VCS332Z
8R2000 0.1 %
B9825
8
0.2)
VISHAY
VCS331Z
0R2000 1 %
B9825
(5.0
0.197
0.040 (1.0)
NOMINAL
0.040 (1.0)
NOMINAL
0.032 (0.8)
NOMINAL
0.16 (0.4)
NOMINAL
0.040 (1.0)
NOMINAL
INUM
0.689 0.020 (17.5 0.5)
1.083 0.20 (27.5 0.5)
2061(.5)
0.689 0.020 (17.5 0.5)
1.083 0.20 (27.5 0.5)
INUM
01(25.4)
SALES
• 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 • FRANCE/SWITZERLAND/SOUTHERN EUROPE: foilsales.eusouth@vishay.com • ISRAEL: foilsales.israel@vishay.com
www.vishay.com
3
For technical questions, contact: foil@vishay.com
Document Number: 63086
Revision: 02-Mar-05
Power Current Sense Resistors
Z-Based Bulk Metal® Foil Technology
Rapid R Stabilization - Low WCR - Low TCR
Vishay Foil Resistors
Δ
TABLE 1 - RESISTANCE VALUE VS TOLERANCE
RESISTANCE RANGE (Ω)
STANDARD TOLERANCE (%)
10 to 500
0.01 %
0.02 %
0.05 %
0.10 %
0.25 %
0.50 %
5 to < 10
2 to < 5
1 to < 2
0.5 to < 1
0.25 to < 0.5
TABLE 2 - SPECIFICATIONS
TEST OR CONDITION
PERFORMANCE
Wattage Coefficient of Resistance (WCR)
4 ppm/Watt Maximum1)
Temperature Coefficient of Resistance (TCR)
(- 55 °C to + 125 °C, + 25 °C Reference)
≥ 1.0 Ω to 500 Ω, 2 ppm/°C Maximum
0R25 to < 1.0 Ω, 3 ppm/°C Maximum
Thermal Resistance
6 °C/Watt1)
Maximum Ambient Temperature
Rated Power
Zero Power
+ 25 °C
+ 150 °C
Power Rating
at + 25 °C
VHP4Z
VPR247Z
VFP4Z
10 Watts or 3 Amps Maximum (Heat Sink)2), 3)
3 Watts or 3 Amps Maximum (Free Air)3)
VCS331Z
VCS332Z
10 Watts or 5 Amps Maximum (Heat Sink)2),3)
3 Watts or 5 Amps Maximum (Free Air)3)
Load Life Stability
Inductance
0.05 % Max ΔR, 10 W on heat sink at + 25 °C, 2000 hours
0.01 % Max ΔR, 3 W on heat sink at + 25 °C, 2000 hours
0.05 % Max ΔR, 3 W in free air at + 25 °C, 2000 hours
0.1 µH Maximum; 0.08 µH Typical
< 0.1 ppm/V
Voltage Coefficient
Current Noise
< 0.010 µV(RMS)/Volt of applied voltage (- 40 dB)
NOTES:
1. Mounted on a cooled heat sink held at + 25°C
2. Heatsink - Aluminum (6" L x 4" W x 2" H x 0.04" THK)
3. Whichever is lower
TABLE 3 - ORDERING INFORMATION
Please specify Vishay VHP4Z, VPR247Z, VFP4Z, VCS331Z, VCS332Z series resistors as follows:
MODEL NO.
RESISTANCE VALUE
TOLERANCE
VHP4Z
RESISTANCE
RANGE
LETTER
DESIGNATOR
MULTIPLIER
FACTOR
0.01 %
0.25 to < 500 Ω
R
x 1
Example: 100R01 = 100.01 Ω
Resistance Value, in Ω, 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.
SALES
• 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 • FRANCE/SWITZERLAND/SOUTHERN EUROPE: foilsales.eusouth@vishay.com • ISRAEL: foilsales.israel@vishay.com
Document Number: 63086
Revision: 02-Mar-05
For technical questions, contact: foil@vishay.com
www.vishay.com
4
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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
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Product names and markings noted herein may be trademarks of their respective owners.
Document Number: 91000
Revision: 18-Jul-08
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