303144U-0R0255-D-B-W datasheet, PDF

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303144U-0R0255-D-B-W: DescriptionFixed Resistor, Metal Foil, 1W, 0.0255ohm, 0.5% +/-Tol, -20,20ppm/Cel, 2512,; CategoryPassive components The resistor; File Size1MB，5 Pages; ManufacturerVishay; Websitehttp://www.vishay.com

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303144U-0R0255-D-B-W Overview

Fixed Resistor, Metal Foil, 1W, 0.0255ohm, 0.5% +/-Tol, -20,20ppm/Cel, 2512,

303144U-0R0255-D-B-W Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Objectid	848868002
Reach Compliance Code	compliant
Country Of Origin	Israel
ECCN code	EAR99
YTEOL	10
structure	Rectangular
Number of terminals	2
Maximum operating temperature	170 °C
Minimum operating temperature	-55 °C
Package height	0.635 mm
Package length	6.35 mm
Package shape	RECTANGULAR PACKAGE
Package form	SMT
Package width	3.175 mm
method of packing	Waffle Pack
Rated power dissipation(P)	1 W
resistance	0.0255 Ω
Resistor type	FIXED RESISTOR
series	303144
size code	2512
technology	METAL FOIL
Temperature Coefficient	20 ppm/°C
Tolerance	0.5%

303144U-0R0255-D-B-W Preview

303144, 303145

Models # 303144 and 303145 - Fixed Resistors CSM2512 and CSM3637

with Screen/Test Flow in Compliance with EEE-INST-002 (Tables 2A and

3A, Film/Foil, Level 1) MIL-PRF-55342 and MIL-PRF-49465

FEATURES



Temperature coefficient: ± 20 ppm/°C max.

(- 55 °C to + 125 °C, + 25 °C ref.) (see Table 1)



Surface mount configuration



Four terminal (Kelvin) design: allows for precision accurate

measurements



Power rating: 1 W to 3 W



Resistance tolerance: ± 0.5 %



Resistance range: 2 m to 200 m



Bulk Metal Foil resistors are not restricted to standard

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

extra cost or delivery (e.g. 2.345 m vs. 2 m)



Short time overload: 0.2 % typical



Thermal EMF: 3 µV/°C



Maximum current: up to 38 A



Terminal finish: tin/lead alloy



For prototype units, append a “U” to the model number

(example: 303144U). These units have all of the table 2A

(page 3) 100 % tests performed, with no destructive

qualification testing required (table 3A, page 3). For more

information, please contact

foil@vpgsensors.com



For oriented performances please contact Application

Engineering



303144 and 303145 are low value current sense resistors,

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.

The four terminal devices separate 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.

Vishay Foil Resistors' application engineering department is

available to advise and make recommendations.

Zin

∞

FIGURE 1 - POWER DERATING CURVE

Percent of Rated Power

100

- 65 - 50

- 25

100

125

150

170

+ 70 °C

Ambient Temperature (°C)

TABLE 1 - SPECIFICATIONS

PARAMETER

Resistance Range

Power Rating at 70 °C

Maximum Current

Tightest Tolerance

Temperature Coefficient Max.

(- 55 °C to + 125 °C, + 25 °C ref.)

Operating Temperature Range

Weight (maximum)

Document Number: 63166

Revision: 21-Dec-15

0.09 g

For any questions, contact

foil@vpgsensors.com

± 20 ppm/°C (3 m to < 100 m)

± 25 ppm/°C (100 m to 200 m)

303144

3 m to 200 m

18 A

± 0.5 %

± 25 ppm/°C (2 m to



3 m)

± 25 ppm/°C (100 m to 200 m)

± 20 ppm/°C (> 3 m to < 100 m)

0.29 g

www.vishayfoilresistors.com

303145

2 m to 200 m

3 W ( 2 m to 10 m)

2 W (> 10 m to 200 m)

38 A

- 55 °C to + 125 °C, ref. + 25 °C

303144, 303145

FIGURE 2 - DIMENSIONS AND IMPRINTING

in inches (millimeters)

303144 DIMENSIONS

(1)

303145 DIMENSIONS

(1)

303144 LAND PATTERN

Kelvin Connection

, I

- Current

, E

- Sense

303145 LAND PATTERN

DIMENSIONS - TOLERANCES ± 0.010 (± 0.254)

MODEL

RESISTANCE RANGE (m)

3 to < 5

303144

5 to < 7

7 to 200

303145

2 to 200

0.360 (9.144)

0.370 (9.398)

0.025 (0.635)

0.250 (6.350)

0.125 (3.175)

0.025 (0.635)

0.087 (2.210)

0.047 (1.194)

0.030 (0.762)

0.086 (2.184)

0.061 (1.549)

0.032 (0.813)

0.030 (0.762)

0.032 (0.813)

LAND PATTERN DIMENSIONS - TOLERANCES ± 0.003 (± 0.076)

MODEL

RANGE

0R003 to 0R0049

303144

0R005 to 0R0069

0R007 to 0R2

303145

Note

(1)

0.120 (3.05)

0.083 (2.10)

0.065 (1.65)

0.116 (2.95)

0.145 (3.68)

0.390 (9.91)

0.045 (1.14)

0.066 (1.68)

0.021 (0.53)

0.024 (0.610)

0.055 (1.39)

0.050 (1.27)

0.125 (3.17)

0.160 (4.06)

0.178 (4.52)

0R002 to 0R2

White dot indicates top side of part for mounting purposes

www.vishayfoilresistors.com

For any questions, contact

foil@vpgsensors.com

Document Number: 63166

Revision: 21-Dec-15

303144, 303145

NOTES



Tightest absolute tolerance: 0.5 % for any value within the pertinent ohmic value range.



Measurement error allowed for

R

limits: 0.0005





For prototype units, append a “U” to the model number (example: 303144U). These units have all of the table 2A 100 % tests

performed, with no destructive qualification testing required.

TABLE 2 - EEE-INST-002

(Table 2A Film/Foil, level 1)

100 % TESTS/INSPECTIONS

(1)

RC Record

Thermal Shock

RC Record

High Temperature Exposure

RC Record

Final Inspection

Visual Inspection

Mechanical Inspection

In tolerance

25 x (- 65 °C to + 150 °C)

R

= 0.1 %

+ 170 °C, 100 h, no power

In tolerance

R

= 0.2 %

5 % PDA on

R,

10 % PDA on out of tolerance

Magnification 30 x to 60 x

Dimensions, workmanship, 3 units sample size

Note

(1)

VFR will perform a pre-cap visual inspection 100 % in the production flow prior to overcoating

TABLE 3 - EEE-INST-002

(Table 3A Film/Foil, level 1)

DESTRUCTIVE TESTS - MIL-PRF-49465

(2)

Sample size: 3(0)

Group 2

Solderability

MIL-STD-202, method 208

Sample size: 10(0) - mounted on FR4

TCR measurement per

MIL-STD-202, method 304

- 55 °C/+ 25 °C/+ 125 °C

Low temperature storage

per MIL-PRF-49465

Low temperature operation

per MIL-PRF-55342

Short time overload per

MIL-STD-49465

303144: 3 m to < 100 m: ± 20 ppm/°C

100 m to 200 m: ± 25 ppm/°C

303145: 2 m to



3 m: ± 25 ppm/°C

> 3 m to < 100 m: ± 20 ppm/°C

100 m to 200 m: ± 25 ppm/°C

R

= 0.2 %

- 55 °C ± 2 °C, 24 h ± 4 h

ambient no load dwell for 2 h to 8 h at + 25 °C

R

= 0.2 %

- 65 °C ambient no load dwell for 1 h

rated power for 45 min

no load dwell at + 25 °C for 24 h ± 4 h

R

= 0.5 %

5 x rated power at + 25 °C for 5 s, not to exceed maximum current rating

Group 3

Sample size: 9(0) - mounted on FR4

Resistance to soldering

heat

Moisture resistance per

MIL-STD-202, method 106

(7a and 7b not required)

Sample size: 9(0)

Group 5

Shock per MIL-STD-202,

method 213, condition I

Vibration per MIL-STD-202,

method 204, condition D

Group 6

R

= 0.05 %

100G, 6 ms axes Z and Y, 10 shocks per axis

R

= 0.05 %

10 Hz to 2000 Hz, 20G 2 axes, 6 h per axis

R

= 0.05 %

10 s to 12 s at + 260 °C reflow method

R

= 0.05 %

240 h, no power

Group 4

Sample size: 12(0) - mounted on FR4

Life test per

MIL-PRF-49465

R

= 1 %

2000 h, + 70 °C, rated power

For any questions, contact

foil@vpgsensors.com

www.vishayfoilresistors.com

Document Number: 63166

Revision: 21-Dec-15

303144, 303145

TABLE 3 - EEE-INST-002

(Table 3A Film/Foil, level 1)

DESTRUCTIVE TESTS - MIL-PRF-49465

(2)

Sample Size: 10(0) - mounted on FR4

Group 7B

Solder mounting integrity

per MIL-PRF-55342

303144: 3 kg force, 30 s

303145: 5 kg force, 30 s

Sample size: 5(0) - mounted on FR4

Group 9

High temperature exposure

per MIL-PRF-49465

Sample size:

For 303144: 12



For 303145: 4

Outgassing

Notes

(2)

Units selected randomly from lots which successfully passed the table 2A testing

(3)

Optional, per customer request.

Measurement error allowed for

R

limits: 0.0005

.

R

= 0.3 %

1000 h, + 170 °C ± 7 °C, no power

Group 10

(3)

Per ASTM E595

PART NUMBER IDENTIFICATION

Model #

Base Model

Value Range

303144

CSM2512

3 m to 200 m

303145

CSM3637

2 m to 200 m

Part Number:

{Model} - {Value} - {Tolerance} - {Termination} - {Packaging}

Absolute Tolerance

0.5 %

Code

Termination

Tin/lead

Code

Packaging

Waffle

Tape and reel

Code

Example:

303144 - 0R1 - DBW

303144, 100 m, 0.5 %, tin/lead termination, waffle packaging

www.vishayfoilresistors.com

For any questions, contact

foil@vpgsensors.com

Document Number: 63166

Revision: 21-Dec-15

Legal Disclaimer Notice

Vishay Precision Group, Inc.

Disclaimer

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

Vishay Precision Group, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf

(collectively, “VPG”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in

any other disclosure relating to any product.

The product specifications do not expand or otherwise modify VPG’s terms and conditions of purchase, including but

not limited to, the warranty expressed therein.

VPG 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, VPG 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 warranties, including warranties of fitness for particular purpose,

non-infringement and merchantability.

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 VPG’s knowledge of typical requirements that are often placed on VPG products. It is the customer’s

responsibility to validate that a particular product with the properties described in the product specification is suitable for

use in a particular application. You should ensure you have the current version of the relevant information by contacting

VPG prior to performing installation or use of the product, such as on our website at vpgsensors.com.

No license, express, implied, or otherwise, to any intellectual property rights is granted by this document, or by any

conduct of VPG.

The products shown herein are not designed for use in life-saving or life-sustaining applications unless otherwise

expressly indicated. Customers using or selling VPG products not expressly indicated for use in such applications do

so entirely at their own risk and agree to fully indemnify VPG for any damages arising or resulting from such use or sale.

Please contact authorized VPG 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 No.: 63999

Revision: 15-Jul-2014

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