VCS232T2R77000TCR2BB datasheet, PDF

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VCS232T2R77000TCR2BB: DescriptionFixed Resistor, Metal Foil, 2W, 2.77ohm, 0.1% +/-Tol, -2,2ppm/Cel,; File Size94KB，4 Pages; ManufacturerVishay; Websitehttp://www.vishay.com; Environmental Compliance

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VCS232T2R77000TCR2BB Overview

Fixed Resistor, Metal Foil, 2W, 2.77ohm, 0.1% +/-Tol, -2,2ppm/Cel,

VCS232T2R77000TCR2BB Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Objectid	943099206
Reach Compliance Code	unknown
ECCN code	EAR99
structure	Conformally Coated
JESD-609 code	e3
Lead length	12.7 mm
Number of terminals	4
Maximum operating temperature	150 °C
Minimum operating temperature	-55 °C
Package height	13 mm
Package length	31.5 mm
Package form	4 Terminals
Package width	4.5 mm
method of packing	Bulk
Rated power dissipation(P)	2 W
resistance	2.77 Ω
Resistor type	FIXED RESISTOR
series	VCS232
technology	METAL FOIL
Temperature Coefficient	2 ppm/°C
Terminal surface	Tin (Sn)
Tolerance	0.1%

VCS232T2R77000TCR2BB Preview

VCS232

Vishay Foil Resistors

Ultra High Precision Foil Power Current Sensing Resistor with

Absolute TCR of ± 2 ppm/°C, ESD Immunity up to 25 kV and

Tolerance of ± 0.02 %, Power Rating up to 2 W

FEATURES

•

Temperature coefficient of resistance (TCR):

± 2 ppm/°C typical (- 55 °C to + 125 °C,

+ 25 °C ref.)

•

Power rating at + 25 °C: 2 W (free air)

•

Tolerance: to ± 0.02 %

•

Load life stability: to ± 0.01 %, 25 °C for 2000 h at rated

power

•

Maximum current: 3 A

•

Resistance range: 0.2

to 500

•

Vishay Foil resistors are not restricted to standard values;

specific “as required” values can be supplied at no extra

cost or delivery (e.g 100.234

vs. 100

Ω)

•

Electrostatic discharge (ESD) up to 25 000 V

•

Short time overload

≤

0.005 %

•

Non-inductive, non-capacitive design

•

Rise time: 1 ns effectively no ringing

•

Thermal stabilization < 1 s

•

Current noise < - 40 dB

•

Thermal EMF: 0.05 µV/°C

•

Voltage coefficient < 0.1 ppm/V

•

Non-inductive: 0.08 µH

•

Non hot spot design

•

Terminal finish: lead (Pb)-free or tin/lead alloy

•

Compliant to RoHS directive 2002/95/EC

•

For better performances please contact us

•

Prototype quantities available in just 5 working days

or sooner. For more information, please contact

foil@vishay.com

INTRODUCTION

Vishay Foil has developed a new resistor concept, through

the use of a proprietary Bulk Metal

Foil and new

nanometer-level photo-etching techniques created by the

company so that the conductor can closely approximate a

flat wire. Because the metals used are not drawn, wound or

mistreated in any way during the manufacturing process,

Vishay Foil resistors maintain all their design, physical and

electrical characteristics. These characteristics are both

measurable and predictable before, during and after

manufacturing.

Through the entire process, every step is carefully controlled

not only to keep the metal in its virgin state, but also to

eliminate the effects of any stress that might be imposed

either during manufacture or use.

RESISTANCE

RANGE

(Ω)

0.2 to < 1.0

> 1 to 10

TIGHTEST

RESISTANCE

TOLERANCE

(%)

± 0.05

TYPICAL TCR AND

MAX. SPREAD

(ppm/°C)

(1)

± 2 ± 13

±2±3

± 0.05

> 10 to 500

± 0.02

±2±3

Notes

(1)

- 55 °C to + 125 °C, + 25 °C ref.

• Contact applications engineering for other available values

TABLE 1 - TOLERANCE AND TCR

FIGURE 1 - POWER DERATING CURVE

- 55 °C

+ 25 °C

+ 100

+ 75

+ 50

+ 25

Percent of

Rated Power

- 50

+ 50

+ 100

+ 150

+ 200

Ambient Temperature (°C)

(Further Derating Not Necessary)

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

Document Number: 63151

Revision: 05-May-09

For any questions, contact:

foil@vishay.com

www.vishay.com

APPLICATIONS

•

Automatic test equipment (ATE)

High precision instrumentation

Electron beam application

Current sensing applications

Pulse applications

Military

Power amplifier

Power supplies

VCS232

Vishay Foil Resistors

FIGURE 2 - TRIMMING TO VALUES

(Conceptual Illustration)

FIGURE 3 - TYPICAL RESISTANCE/

TEMPERATURE CURVE

+ 150

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 Change in

Current Direction

Note:

Foil shown in

black,

etched spaces in

white

FIGURE 4 - DIMENSIONS

in inches (millimeters)

MODEL

MAX.

MIN.

VCS232

1.240 (31.50)

0.512 (13.00)

0.177 (4.50)

0.500 (12.70)

TABLE 2 - VCS232 PERFORMANCE SPECIFICATIONS

TEST

(Conditions per MIL-PRF-49465)

Thermal Shock

CONDITIONS

MIL-PRF-49465B

ΔR

LIMITS

± (0.5 % + 0.0005R)

± (0.25 % + 0.0005R)

± (1.0 % + 0.0005R)

± (0.5 % + 0.0005R)

± (0.1 % + 0.0005R)

± (1.0 % + 0.0005R)

95 % coverage

TYPICAL

ΔR

LIMITS

± 0.01 %

± 0.005 %

± 0.01 %

± 0.002 %

± 0.01 %

± 0.002 %

± 0.01 %

MAXIMUM

ΔR

LIMITS

± 0.02 %

± 0.01 %

± 0.02 %

± 0.005 %

± 0.02 %

± 0.005 %

± 0.02 %

- 55 °C to + 125 °C, 5 cycles

5 x rated power for 5 s

Short Time Overload

Resistance to Soldering Heat

Terminal Strength

10 s to 12 s at + 260 °C

Pull test at 5 lb

High Temperature Exposure

Low Temperature Storage

Moisture Resistance

2000 h, + 150 °C

MIL-PRF-49465, 24 h at - 55 °C

MIL-STD-202, method 106, + 65 °C to - 10 °C,

90 % to 98 % RH, rated power, 240 h

100 g, 6 ms

Shock (Specified Pulse)

Vibration (High Frequency)

Load Life Stability

Solderability

www.vishay.com

(10 Hz to 2000 Hz) 20 g

2000 h, + 25 °C at rated power

MIL-STD-202

For any questions, contact:

foil@vishay.com

+ 50

+ 100

± 2 ppm/°C (+ 25 °C Reference)

(ppm)

- 50

- 100

- 150

- 200

- 50

- 25

+ 25

+ 50

+ 75

+ 100

+ 125

Ambient Temperature (°C)

Tin/Lead or Lead (Pb)-free

Solder coated

copper leads

± 0.20 (± 0.5)

0.688 (17.48)

± 0.20 (± 0.5)

1.083 (27.51)

NOM.

0.040 (1.02)

NOM.

0.032 (0.81)

Document Number: 63151

Revision: 05-May-09

VCS232

Vishay Foil Resistors

POST MANUFACTURING OPERATIONS OR PMO FOR IMPROVED EOL

Many analog applications can include requirements for

performance under conditions of stress beyond the norm and

over extended periods of time. This calls for more than just

selecting a standard device and applying it to a circuit. The

standard device may turn out to be all that is needed but an

analysis of the projected service conditions should be made

and it may well dictate a routine of stabilization known as

post manufacturing operations or PMO. The PMO operations

that will be discussed are only applicable to Bulk Metal Foil

resistors. They stabilize Bulk Metal Foil resistors while they

may be harmful to other types. Short time overload,

accelerated load life, and temperature cycling are the three

PMO methods that do the most to remove the anomalies

down the road. Vishay Bulk Metal Foil resistors are

inherently stable as manufactured. These PMO methods are

only of value on Bulk Metal Foil resistors and they improve

the performance by small but significant amounts. Users are

encouraged to contact Vishay Foil applications engineering

for assistance in choosing the PMO operations that are right

for their application.

TABLE 3 - GLOBAL PART NUMBER INFORMATION

(1)

DENOTES PRECISION

VALUE

NEW GLOBAL PART NUMBER: Y094245R2361Q9L (preferred part number format)

PRODUCT CODE

0942

= VCS232

RESISTANCE TOLERANCE

= ± 0.02 %

= ± 0.05 %

= ± 0.1 %

= ± 0.5 %

= ± 1.0 %

= ± 2.0 %

= ± 5.0 %

FOR EXAMPLE: ABOVE GLOBAL ORDER Y0942 45R2361 Q 9 L:

TYPE: VCS232

VALUES: 45.2361

ABSOLUTE TOLERANCE: ± 0.02 %

TERMINATION: lead (Pb)-free

PACKAGING: bulk pack

HISTORICAL PART NUMBER: VCS232T 45R2361 TCR2 Q B (will continue to be used)

VCS232

MODEL

45R2361

TCR2

TCR

CHARACTERISTIC

ABSOLUTE

TOLERANCE

= ± 0.02 %

= ± 0.05 %

= ± 0.1 %

= ± 0.5 %

= ± 1.0 %

= ± 2.0 %

= ± 5.0 %

PACKAGING

= bulk

TERMINATION

OHMIC VALUE

45.2361

VCS232

= lead (Pb)-free

None = tin/lead

Note

(1)

For non-standard requests, please contact application engineering.

Document Number: 63151

Revision: 05-May-09

For any questions, contact:

foil@vishay.com

CHARACTERISTICS

= standard

= lead (Pb)-free

1 to 999

= custom

PACKAGING

= bulk

www.vishay.com

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

www.vishay.com

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