CSM3637P0R00909EBT [VISHAY]

Fixed Resistor, Metal Foil, 5W, 0.00909ohm, 0.2% +/-Tol, -15,15ppm/Cel, 3637;


型号：	CSM3637P0R00909EBT
厂家：	VISHAY
描述：	Fixed Resistor, Metal Foil, 5W, 0.00909ohm, 0.2% +/-Tol, -15,15ppm/Cel, 3637 电阻器
文件：	总5页 (文件大小：709K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

CSM3637P

Vishay Foil Resistors

Ultra High Precision, Surface Mount Metal Strip Resistor with

Increased Power to 5W (40A max), Resistance Values from 3 m,

and TCR to ± 15 ppm/°C

FEATURES

 Resistance range: 3 m to 100 m

NEW

 Temperature coefficient of resistance (TCR):

15 ppm/°C maximum

(- 55 °C to + 125 °C, + 25 °C ref.)

INTRODUCTION

 Load life stability: ± 0.2 % (70 °C, 2000 h at rated

power)

The CSM3637P is a low value current sense resistor,

providing power and precision in a four terminal, surface

mount configuration. Its all welded construction is made up

of a Bulk Metal^®resistive element with plated copper

terminations.

 Power rating: to 5 W (see Table 1)

 Resistance tolerance: to ± 0.1 %

 Vishay Foil resistors are not restricted to standard values;

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

cost or delivery (e.g. 10.2345 m vs. 10 m)

There are many current sense resistors on the market. Until

now the combination of very stable and precise resistors

with low TCR of ± 15 ppm/°C maximum, tight tolerance of

± 0.1 % and load life stability of ± 0.2 % (2000 h, + 70 °C at

rated power) was not easily available.

 Short time overload: ± 0.1 % typical

 Proprietary processing technique produces extremely low

resistance values with improved stability

The key performance of the new CSM3637P is its high rated

power up to 5W. This option became available due to a

special design which consists of a heat sink on the top of the

resistive element, thus allowing a better heat dissipation.

 All welded construction

 Solderable terminations

 Very low inductance 0.5 nH

 Excellent frequency response to 50 MHz

These specifications are based on tests performed in

accordance with methods prescribed by appropriate

MIL-PRF standards (MIL-PRF-55342 and MIL-PRF-49465).

 Low thermal EMF < 3 µV/°C (DC offset error, significant for

low values)

The four terminal device separates the current leads from

the voltage sensing leads. This configuration eliminates the

effect of the lead wire resistance from points A to B and

C to D.

 Maximum current: up to 40 A

 Four terminal (Kelvin) design: allows for precise and

accurate measurements

 Terminal finishes available: lead (Pb)-free, tin/lead alloy

In addition, a key feature of the CSM3637P is its low thermal

EMF design (very important for low ohmic value DC

applications). The welded terminals make intimate contact

with the chip thereby minimizing temperature differentials.

 Prototype quantities available in just 5 working days

or sooner. For more information, please contact

foil@vishaypg.com

Our application engineering department is available to

advise and make recommendations.

 For better performances, please contact us

For non-standard technical requirements and special

applications, please contact: foil@vishaypg.com

FIGURE 1 - POWER DERATING CURVE

+ 70 °C

100

- 65 - 50

- 25

100

125

150 170

Ambient Temperature (°C)

Zin

∞

* Pb containing terminationOPDs are RoHS compliant, exemptions may apply

Document Number: 63210

Revision: 31-Oct-11

For any questions, contact: foil@vishaypg.com

www.vishayfoilresistors.com

CSM3637P

Vishay Foil Resistors

ABOUT CSM3637P (Low Ohm Value 3 m to 100 m)

This new high-precision Bulk Metal^®surface-mount Power

Metal Strip^®resistor of 3 m to 100 m features an

improved load-life stability of ± 0.2 % at + 70 °C for 2000 h at

rated power, an absolute TCR of ± 15 ppm/°C maximum

from - 55 °C to + 125 °C, + 25 °C ref., and a tolerance of

± 0.1 %.

resistors, is minimized, while the pure current-to-voltage

conversion is protected from such interference in DC

applications.

The stability problems associated with analog circuits are

very pervasive, but knowledgeable selection of a few

high-quality resistors, networks, or trimming potentiometers

in critical locations can greatly improve circuit performance,

long-term application-related performance, as well as the

designer’s peace-of-mind.

Typical current sensing resistors exhibit 2000 hour load-life

changes more than 5 times greater than the CSM3637P. The

improved resistance stability of the CSM Series makes it

ideal for tightened-stability voltage division and precision

current sensing applications in switching linear power

supplies, power amplifiers, measurement instrumentation,

bridge networks, and medical and test equipment.

Additionally, the overall system cost is often reduced when a

knowledgeable designer concentrates costs in a few

exceptionally stable components whose proven minimal-

deviation load and environmental stability can often eliminate

the necessity of additional compensating circuitry or

temperature-controlling systems. The higher reliability and

better overall system performances also achieve excellent

product results in the field, enhancing market acceptance

and product reputation.

Traditional Passive current sensors and shunts generate

heat under power, which changes their resistance, and thus

their voltage output. The CSM’s low absolute TCR of

± 15 ppm/°C reduces errors due to temperature changes,

thus reducing a major source of uncertainty in current

measurement. The CSM can withstand unconventional

environmental conditions, including the extremely high

temperatures and radiation-rich environments of down-hole

oil exploration and well logging, or the deep-sea underwater

repeaters in cross-ocean communications.

Designers often unnecessarily pay for tighter tolerances than

required simply to accommodate the resistance stability

shifts they know to be imminent in an application due to the

large application-related changes in the components they

selected. Selection of a high-stability component like the

CSM in these applications eliminates the need for shift

allowance due to “planned instability” and allows the use of

looser initial tolerances than would be necessary with

current-sensing resistors based on other technologies.

The stability of the CSM3637P can be further enhanced by

post-manufacturing operations (PMO), such as temperature

cycling, short-time overload, and accelerated load life which

are uniquely applicable to Bulk Metal^®Foil Technology.

The device features a low thermal electromotive force (EMF)

that is critical in many precision DC applications. The CSM’s

all-welded construction is composed of a Bulk Metal^®

resistive element with welded copper terminations, plated for

soldering. The terminations make true ohmic contact with the

resistive layer along the entire side of the resistive element,

thereby minimizing temperature variations. Also, the resistor

element is designed to uniformly dissipate power without

creating hot spots, and the welded terminations material is

compatible with the element material.

The Key Applications

Applications requiring accuracy and repeatability under

stress conditions such as the following:

 Switching and linear power supplies

 Precision current-sensing

 Power management systems

 Feedback circuits

 Power amplifiers

 Measurement instrumentation

 Precision instrumentation amplifiers

 Medical and automatic test equipment

 Satellites and aerospace systems

 Commercial and Military avionics

 Test and measurement equipment

 Electronic scales

These design factors result in a very low thermal-EMF

(3 µV/°C) resistor because, in addition to the low thermal

EMF compatibility of the metals, the uniformity and thermal

efficiency of the design minimizes the temperature

differential across the resistor, thereby assuring low thermal

EMF generation at the leads. This further reduces the

“battery effect” exhibited by most current-sensing or

voltage-reference resistors. Thus, the parasitic voltage

generated at the junction of two dissimilar metals, which is

especially important in low-value DC current-sensing

www.vishayfoilresistors.com

For any questions, contact: foil@vishaypg.com

Document Number: 63210

Revision: 31-Oct-11

CSM3637P

Vishay Foil Resistors

TABLE 1 - PERFORMANCE SPECIFICATIONS

PARAMETER

CSM3637P

Resistance Range

3 m to 100 m

5W (3m to 10m)

Power Rating at 70 °C in free air

4W (>10m to 100m)

Maximum Current

40 A

± 0.1 %

Tightest Tolerance

Temperature Coefficient Maximum (- 55 °C to + 125 °C, + 25 °C ref.)

± 15 ppm/°C

< 3 µV/°C

Thermal EMF

Operating Temperature Range

Weight (maximum)

- 65 °C to + 170 °C

0.38 g

FIGURE 2 - DIMENSIONS AND IMPRINTING in inches (millimeters)

CSM3637P LAND PATTERN

CSM3637P DIMENSIONS

E₁

I₁

H₁

E₂

H₂

I₂

DIMENSIONS - TOLERANCES 0.010 ( 0.254)

H₁

H₂

RESISTANCE RANGE (m)

0.060 (1.524)

max

3 to 100

0.360 (9.144) 0.370 (9.398) 0.025 (0.635)

0.086 (2.184) 0.061 (1.549) 0.032 (0.813)

LAND PATTERN DIMENSIONS - TOLERANCES 0.003 ( 0.076)

RESISTANCE RANGE (m)

3 to 100

0.178 (4.52)

0.390 (9.91)

0.116 (2.95)

0.066 (1.68) 0.024 (0.610)

POWER METAL STRIP^®CSM3637P CONSTRUCTION

1. Resistive element

2. Copper terminal with solderable finish

3. Terminal-to-element weld

4. High temperature encapsulation

5. Anodized aluminum heat sink

Document Number: 63210

Revision: 31-Oct-11

For any questions, contact: foil@vishaypg.com

www.vishayfoilresistors.com

CSM3637P

Vishay Foil Resistors

TABLE 2 - CSM3637P PERFORMANCE SPECIFICATIONS

MIL-PRF-49465B

TYPICAL MAXIMUM

R LIMITS R LIMITS

TEST

CONDITIONS

R LIMITS

- 55 °C to + 150 °C, 1000 cycles,

15 min at each extreme

Thermal Shock

± (0.5 % + 0.0005R)

0.1 %

0.3 %

Load Life Stability

2000 h, 70 °C at rated power

85 °C, 85 % humidity, 10 % bias, 1000 h

5 x rated power for 5 s

± (1.0 % + 0.0005R)

± (0.5 % + 0.0005R)

± (1.0 % + 0.0005R)

± (0.5 % + 0.0005R)

0.2 %

0.05 %

0.1 %

0.5 %

0.2 %

0.3 %

0.1 %

Bias Humidity

Short Time Overload

High Temperature Exposure

Low Temperature Storage

1000 h, 170 °C

0.2 %

MIL-PRF-49465

0.05 %

MIL-STD-202, method 106, 0 % power,

7a and 7b not required

Moisture Resistance

± (0.5 % + 0.0005R)

0.02 %

0.05 %

Shock

100 g, 6 ms

± (0.1 % + 0.0005R)

± (0.25 % + 0.0005R)

95 % coverage

0.02 %

0.05 %

0.1 %

Vibration

(10 Hz to 2000 Hz) 20 g

10 s to 12 s at + 260 °C

MIL-STD-202

Resistance to Soldering Heat

Solderability

Note

•

Measurement error 0.0005R per MIL-PRF-49465

TABLE 3 - GLOBAL PART NUMBER INFORMATION ⁽¹⁾

NEW GLOBAL PART NUMBER: Y14740R05000E0R (preferred part number format)

DENOTES PRECISION

VALUE

CHARACTERISTICS

R = 

0 = standard part, tin/lead termination

9 = standard part, lead (Pb)-free termination

1 to 999 = custom

PRODUCT CODE

RESISTANCE TOLERANCE

PACKAGING

1474 = CSM3637P

B = ± 0.1%

C = ± 0.25 %

D = ± 0.5 %

E = ± 0.2 %

F = ± 1.0 %

W = waffle pack

R = tape and reel

FOR EXAMPLE: ABOVE GLOBAL ORDER Y1474 0R05000 E 0 R:

TYPE: CSM3637P

VALUE: 50 m

ABSOLUTE TOLERANCE: ± 0.2 %

TERMINATION: standard tin/lead

PACKAGING: tape and reel

HISTORICAL PART NUMBER: CSM3637P 0R05 E B T (will continue to be used)

CSM3637P

0R05

MODEL

OHMIC VALUE

ABS. TOLERANCE

TERMINATION

PACKAGING

T = tape and reel

W= waffle pack

0R05 = 0.05 

B = ± 0.1%

C = ± 0.25 %

D = ± 0.5 %

E = ± 0.2 %

F = ± 1.0 %

S = lead (Pb)-free

B = tin/lead

Note

⁽¹⁾For non-standard requests, please contact application engineering.

www.vishayfoilresistors.com

For any questions, contact: foil@vishaypg.com

Document Number: 63210

Revision: 31-Oct-11

Legal Disclaimer Notice

Vishay Precision Group

Disclaimer

ALL PRODUCTS, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE.

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behalf (collectively, “Vishay Precision Group”), disclaim any and all liability for any errors, inaccuracies or

incompleteness contained herein or in any other disclosure relating to any product.

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purchase, including but not limited to, the warranty expressed therein.

Vishay Precision Group makes no warranty, representation or guarantee other than as set forth in the terms

and conditions of purchase. To the maximum extent permitted by applicable law, Vishay Precision Group

disclaims (i) any and all liability arising out of the application or use of any product, (ii) any and all liability,

including without limitation special, consequential or incidental damages, and (iii) any and all implied

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Information provided in datasheets and/or speciﬁcations may vary from actual results in different applications

and performance may vary over time. Statements regarding the suitability of products for certain types of

applications are based on Vishay Precision Group’s knowledge of typical requirements that are often placed on

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properties described in the product speciﬁcation is suitable for use in a particular application.

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Product names and markings noted herein may be trademarks of their respective owners.

Document No.: 63999

Revision: 27-Apr-11

www.vishaypg.com

CSM3637P0R00909EBT [VISHAY]

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