VHP-4中文资料

Document Number: 63005For any questions, contact: foil@https://www.wendangku.net/doc/887119977.html,

https://www.wendangku.net/doc/887119977.html,

VHP-3, VHP-4, VPR247

Vishay Foil Resistors

Bulk Metal ? Foil Technology

Hermetically Sealed Power and Current Sensing Resistor with

TCR of 2 ppm/°C and Power up to 10 Watts

Any value available within resistance range

Vishay Bulk Metal

? Foil power resistors offer the best approach to low value power and current sensing when a combination of accuracy, tight TCR, low thermal EMF, low

voltage coefficient, Kelvin connection, and long term stability (under power) are required.

Vishay Models VHP-3 and VHP-4 offer all welded construction and screw mounting directly to a metal heat sink for maximum heat transfer. Hermetic sealing and nitrogen back fill provide the maximum protection against environmental stresses, thereby ensuring long term stability.A special feature of this construction is Kovar eyelet’s and OFHC solder plated copper leads providing the lowest thermal EMFs in the industry.

Vishay Model VPR247 has many of the advantages of the VHP-4 but with significantly reduced size and weight. It also has gold plated copper leads.

Our Application E ngineering department is available to advise and to make recommendations. For non-standard technical requirements and special applications, please contact us.

FEATURES

?Temperature coefficient of resistance TCR:

± 2 ppm/°C typical (- 55 °C to + 125 °C,+ 25 °C ref.) (see tables 1 and 2)

?Tolerance: to ± 0.01 % (see tables 1 and 2)?Power rating (heat-sinked): 10 W

?Load life stability: ± 0.01 % at 25 °C, 2000 h at rated power ?Resistance range: 0.05 Ω to 80 k Ω

?Electrostatic discharge (ESD) above 25 000 V ?Non inductive, non capacitive 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 ?Non hot spot design ?Terminal finishes available:VHP-3 and VHP-4:lead (Pb)-free tin/lead alloy VPR247:

gold plated

?Any value available within resistance range (e.g. 1K234)?Prototype samples available from 48 h. For more information, please contact foil@https://www.wendangku.net/doc/887119977.html,

?For better performances, please contact Application Engineering

Notes

1.Weight of VHP-3 and VHP-4 = 15 g maximum VPR247 = 7 g maximum

2.Available up to 500 Ω

3.- 55 °C to + 125 °C, + 25 °C ref.

4.See figure 5

* Pb containing terminations are not RoHS compliant, exemptions may apply RoHS*

COMPLIANT

TABLE 1 - VHP-31) SPECIFICATIONS

RESISTANCE RANGE (Ω)TIGHTEST TOLERANCE TYPICAL TCR 3), 4)

MAXIMUM TCR 3)50 to 80K ± 0.01 %± 2 ppm/°C ± 5 ppm/°C 25 to < 50± 0.02 %± 7 ppm/°C 10 to < 25± 0.05 %± 10 ppm/°C 5 to < 10± 0.1 %± 13 ppm/°C 2 to < 5± 0.25 %± 20 ppm/°C 1 to < 2± 0.5 %± 25 ppm/°C

0.5 to < 1± 1.0 %± 50 ppm/°C

0.25 to < 0.5± 2.0 %0.1 to < 0.25

± 5.0 %

TABLE 2 - VHP-4 AND VPR247 SPECIFICATIONS 1), 2)

RESISTANCE RANGE (Ω)TIGHTEST TOLERANCE TYPICAL TCR 3), 4)

MAXIMUM TCR 3)10 to 500± 0.01 %± 2 ppm/°C ± 5 ppm/°C 5 to < 10± 0.02 %± 6 ppm/°C 2 to < 5± 0.05 %± 8 ppm/°C 1 to < 2± 0.1 %± 10 ppm/°C 0.5 to < 1± 0.25 %± 15 ppm/°C 0.25 to < 0.5± 0.5 %± 20 ppm/°C 0.1 to < 0.25± 1.0 %± 25 ppm/°C 0.05 to < 0.1

± 2.0 %

± 30 ppm/°C

VHP-3, VHP-4, VPR247

Vishay Foil Resistors

Bulk Metal ? Foil Technology

Hermetically Sealed Power and Current Sensing Resistor

with TCR of 2 ppm/°C and Power up to 10 Watts

https://www.wendangku.net/doc/887119977.html, For any questions, contact: foil@https://www.wendangku.net/doc/887119977.html,

Document Number: 63005

Kelvin (4-terminal) connections are used 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 2 shows a high impedance measurement system where r 5 approaches infinity and I m approaches zero resulting in negligible IR drop through r 3and r 4 which negates their lead resistance and TCR effect. With the voltage sense leads E 1 and E 2 inside of r 1 and r 2 the resistance and TCR effect of the current leads, I 1 and I 2 are negated and only the resistance and TCR of the element R are sensed. This method of measurement is essential for precise current sensing.

TABLE 3 - GENERAL SPECIFICATIONS

Stability Load life 2000 h ± 0.05 % maximum ΔR, 3 W in still air at + 25 °C ± 0.05 % maximum ΔR under full rated power (10 W at + 25 °C on heat sink)Shelf life ± 0.0005 % (5 ppm) maximum

ΔR/year

Power Rating At + 25 °C (see Fig. 1)10 W or 3 A - heat sink 2)3 W or 3 A - free air

Current Noise

< 0.010 μV (RMS)/V of applied voltage (- 40 dB)

High Frequency Operation Rise time 1.0 ns at 1 k Ω without ringing Inductance (L)3)0.1 μH maximum; 0.08 μH typical Capacitance (C) 1.0 pF maximum; 0.5 pF typical Voltage Coefficient

< 0.1 ppm/V Operating Temperature Range - 55 °C to + 150 °C

Hermeticity

10-7 Atmospheric cc/s maximum Maximum Working Voltage 7)600 V

Thermal EMF 8)

0.1 μV/°C maximum (lead effect)2.5 μV/W maximum (power effect)

Document Number: 63005For any questions, contact: foil@https://www.wendangku.net/doc/887119977.html,

https://www.wendangku.net/doc/887119977.html,

VHP-3, VHP-4, VPR247

Bulk Metal ? Foil Technology Hermetically Sealed Power and Current Sensing Resistor

with TCR of 2 ppm/°C and Power up to 10 Watts

Vishay Foil Resistors

VHP-3, VHP-4, VPR247

Vishay Foil Resistors

Bulk Metal ? Foil Technology

Hermetically Sealed Power and Current Sensing Resistor

with TCR of 2 ppm/°C and Power up to 10 Watts

https://www.wendangku.net/doc/887119977.html, For any questions, contact: foil@https://www.wendangku.net/doc/887119977.html,

Document Number: 63005

Notes

1.Whichever is lower.

2.Heat sink chassis dimensions and requirements per

MIL-PRF-39009/1:

3.Inductance (L) due mainly to the leads.

4.The resolution limit of existing test equipment (within the

measurement capability of the equipment, or “essentially zero”).5.Not to exceed power rating of resistor.

6.Vishay test data as compared to MIL-PRF-39009 is shown for

illustration purposes, Vishay test conditions that deviate from the Mil test method are noted within parentheses.7.Maximum ambient temperature rating is + 150 °C.

8.Maximum overload rating is 15 W (5 x rated power in free air;

1.5 x rated power on heatsink), with applied voltage not to exceed 750 V.9.ΔR’s are as shown plus 0.001 Ω to allow for measurement errors

at low resistance values.

TABLE 4 - ENVIRONMENTAL PERFORMANCE

METHOD PARAGRAPH 6)

MIL-PRF-39009ΔR LIMITS

VHP-3, VHP-4 AND VPR247TYPICAL ΔR TEST DATA 9)

Test Group I Conditioning 4.8.2

± 0.2 % + 0.01 Ω

± 0.03 %

Test Group II

Resistance temperature 4.8.4

< 1 ΩSee tables 1 and 2, page 1

Characteristic ± 100 ppm/°C;(- 55 °C to + 125 °C)

1 Ω to 19.6 Ω:± 50 ppm/°C;≥ 20 Ω:± 30 ppm/°C

Low temperature storage 4.8.16

± 0.3 % + 0.01 Ω

± 0.005 %

DWV

(300 V at atmospheric pressure) 4.8.5± 0.2 % + 0.01 Ω

± 0.005 %Insulation resistance 4.8.6104 M Ω> 104 M ΩLow temperature operation 4.8.7

± 0.3 % + 0.01 Ω

± 0.01 %

Short time overload 8)(5 s at 15 W) 4.8.8± 0.3 % + 0.01 Ω± 0.03 %Moisture resistance 4.8.9± 0.5 % + 0.01 Ω± 0.02 %Terminal strength 4.8.10

± 0.2 % + 0.01 Ω

± 0.005 %

Test Group III Shock - specified pulse (Post-test DWV at 300 V) 4.8.11

± 0.2 % + 0.01 Ω

± 0.005 %

Vibration - high frequency (Post-test DWV at 300 V) 4.8.12

± 0.2 % + 0.01 Ω

± 0.005 %

Test Group IV Life test

10 W at 25 °C for 2000 h 4.8.13

± 1.0 % + 0.01 Ω

± 0.01 %

80 % power at + 70 °C for 2000 h --± 0.04 %

Test Group V

High temperature exposure 2000 h at + 150 °C 4.8.14

± 1.0 % + 0.05 Ω

± 0.05 %

INCHES

MM L 6.00152.4W 4.00101.6H 2.0050.8T

0.04

1.0

Document Number: 63005For any questions, contact: foil@https://www.wendangku.net/doc/887119977.html,

https://www.wendangku.net/doc/887119977.html,

VHP-3, VHP-4, VPR247

Bulk Metal ? Foil Technology Hermetically Sealed Power and Current Sensing Resistor

with TCR of 2 ppm/°C and Power up to 10 Watts

Vishay Foil Resistors

Note

* For non-standard requests, please contact Application Engineering.

TABLE 5 - GLOBAL PART NUMBER INFORMATION

NEW GLOBAL PART NUMBER:Y0065500R000T9L (preferred part number format)

DENOTES PRECISION

VALUE AER*Y

R = ΩK = k Ω

0 = standard

9 = lead (Pb)-free 1 - 999 = custom

PRODUCT CODE RESIST ANCE TOLERANCE

PACKAGING 0065 = VHP-30066 = VHP-40830 = VPR247

T = ± 0.01 %Q = ± 0.02 %A = ± 0.05 %B = ± 0.1 %C = ± 0.25 %D = ± 0.5 %F = ± 1.0 %G = ± 2.0 %J = ± 5.0 %

L = bulk pack

FOR EXAMPLE: ABOVE GLOBAL ORDER Y0065 500R000 T 9 L:TYPE: VHP-3VALUE: 500.0 Ω

ABSOLUTE TOLERANCE: ± 0.01 %TERMINATION: lead (Pb)-free PACKAGING: bulk pack

HISTORICAL PART NUMBER:VHP-3T 500R00T B (will continue to be used)

VHP-3T

500R00T B MODEL TERMINATION OHMIC VALUE

RESIST ANCE TOLERANCE P ACKAGING VHP-3VHP-4VPR247

T = lead (Pb)-free None = tin/lead alloy

500 Ω

T = ± 0.01 %Q = ± 0.02 %A = ± 0.05 %B = ± 0.1 %C = ± 0.25 %D = ± 0.5 %F = ± 1.0 %G = ± 2.0 %J = ± 5.0 %

B = bulk pack

06550R 00Y 0T 90L

Disclaimer Legal Disclaimer Notice

Vishay

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.

元器件交易网https://www.wendangku.net/doc/887119977.html,

Document Number: https://www.wendangku.net/doc/887119977.html,