UAL-250.294OHM0.01% datasheet, PDF

USL Series

Powertron

•

UAL-25-4T

UAL-25-4

UAL-25-4TR

Power Rating 5 to 300Watts

All Welded Construction

Resistances from 0.005 to 250kOhms

Tolerance to ±0.01%

High Overload and Pulse Handling

Low TCR: ± 20ppm/K Standard

Four Terminal Versions Available

SPECIFICATIONS

Type

UAL-5

UAL-10

UAL-25

UAL-50

UAL-100

UAL-180

UAL-250

UAL-300

MIL-R-39009

MIL-R-18546

Style

Power Rating ( W @ 25°C )

Commercial

7.5

a

12.5

a

25

b

50

c

100

d

180

d

250

d

300

e

1

a

b

c

d

e

MIL

5

a

10

a

20

b

30

c

75

d

-

120

d

-

Free Air

4.5

7.5

12

20

40

-

100

75

Resistance

Range

1

0.01 to 22K

0.01 to 47K

0.01 to 90K

0.01 to 250K

0.01 to 50K

0.005 to 100K

RER-60 / RE-60

RER-65 / RE-65

RER-70 / RE-70

RER-75 / RE-75

RER-77 / RE-77

-

RER-80 / RE-80

-

For non-inductive windings, divide maximum resistance by 2

Heatsink Required : 0.040 [1.0] Alum. Plate, 129 in

2

[832 cm

2

] or equiv.

Heatsink Required : 0.040 [1.0] Alum. Plate, 167 in

2

[1077 cm

2

] or equiv.

Heatsink Required : 0.059 [1.5] Alum. Plate, 291 in

2

[1877 cm

2

] or equiv.

Heatsink Required : 0.125 [3.2] Alum. Plate, 294 in

2

[1896 cm

2

] or equiv.

Heatsink Required : 0.125 [3.2] Alum. Plate, 895 in

2

[5780 cm

2

] or equiv.

Ordering Information

For Non-Inductive Windings / insert the letter “N” ( i.e. UALN-25 )

Part Number - Resistance - Tolerance - TCR ( If not standard )

Example: UAL-25 10 Ohm 1%

Document Number: 64325

Revision: 20-09-10

For technical questions, contact:

powertron@vishaypg.com

www.powertron.de

1

UAL Series

Powertron

SPECIFICATIONS

(continued)

Specification

Tolerances

Temperature Coefficient

Value

±0.01% to ±10% ( 1% Standard )

>10W : ±20ppm/K

1W to10W : ±50ppm/K

<1W : Call Factory

-55°C to +275°C

1500 VAC

Centerless ground ceramic core

Tinned copper or copperweld leads

High-temperature epoxy molding Compound

Anodized aluminum housing

All welded terminations

Temperature Range

Dielectric Strength

Constuction

Environmental Performance

(MIL-STD 202)

DR

±0.2% + 0.05W

±1% + 0.05W

±0.2% + 0.05W

±0.1% + 0.05W

Dielectric

Load Life

Storage

Moisture Resistance

Thermal Shock

5X Overload ( 5s )

Shock

Vibration

Power Derating Curve

120

100

80

Mo

u

nt

ed

on

Power ( % )

He

60

40

20

0

A

B

C

D

ats

ink

Free-air Derating

A : UAL-5, UAL-10

B : UAL-25

C : UAL-50, UAL-100, UAL-250

D : UAL-300

50

100

150

200

250

300

350

Ambient Temperature (°C)

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2

For technical questions, contact:

powertron@vishaypg.com

Document Number: 64325

Revision: 20-09-10

USL Series

Powertron

Dimensions

Type

UAL-5

UAL-10

UAL-25

UAL-50

±0.005

[±0.13]

0.444

[11.3]

0.562

[14.3]

0.719

[18.3]

1.563

[39.7]

A

±0.005

[±0.13]

0.490

[12.4]

0.625

[15.9]

0.781

[19.8]

0.844

[21.4]

B

±0.031

[±0.8]

0.600

[15.2]

0.750

[19.1]

1.062

[27.0]

1.968

[50.0]

C

±0.062

[±1.6]

1.125

[28.5]

1.375

[35.0]

1.938

[49.2]

2.781

[70.6]

D

±0.015

[±0.4]

0.334

[8.5]

0.430

[10.9]

0.530

[13.5]

0.615

[15.6]

E

±0.015

[±0.4]

0.646

[16.4]

0.800

[20.3]

1.080

[27.4]

1.140

[29.0]

F

±0.015

[±0.4]

0.320

[8.1]

0.400

[10.2]

0.560

[14.2]

0.615

[15.6]

G

±0.010

[±0.25]

0.065

[1.7]

0.075

[1.9]

0.085

[2.2]

0.085

[2.2]

H

±0.010

[±0.25]

0.140

[3.6]

0.190

[4.8]

0.260

[6.6]

0.300

[7.6]

J

±0.010

[±0.25]

0.078

[2.0]

0.093

[2.4]

0.172

[4.4]

0.196

[5.0]

K

±0.005

[±0.13]

0.093

[2.4]

0.093

[2.4]

0.125

[3.2]

0.125

[3.2]

L

±0.015

[±0.4]

0.078

[2.0]

0.102

[2.6]

0.125

[3.2]

0.125

[3.2]

M

±0.005

[±0.13]

0.050

[1.3]

0.086

[2.2]

0.086

[2.2]

0.086

[2.2]

N

±0.062

[±1.6]

0.266

[6.8]

0.312

[7.9]

0.438

[11.1]

0.438

[11.1]

O

±0.031

[±0.8]

0.245

[6.2]

0.312

[7.9]

0.391

[9.9]

0.422

[10.7]

P

±0.002

[±0.05]

0.051

[1.30]

0.081

[2.06]

0.081

[2.06]

0.081

[2.06]

Q

±0.031

[±0.8]

0.085

[2.2]

0.140

[3.6]

0.140

[3.6]

0.140

[3.6]

R

Type

UAL-

100

UAL-

180

UAL-

250

±0.005

[±0.13]

2.750

[69.9]

2.750

[69.9]

3.875

[98.4]

A

±0.005

[±0.13]

-

Aa

±0.005

[±0.13]

2.250

[57.2]

2.500

[63.5]

1.062

[63.5]

B

±0.031

[±0.8]

3.500

[88.9]

3.500

[88.9]

4.500

[114]

C

±0.062

[±1.6]

5.480

[139]

5.480

[139]

7.000

[178]

D

±0.015

[±0.4]

1.800

[45.7]

2.100

[55.3]

2.100

[55.3]

E

±0.015

[±0.4]

2.810

[71.4]

3.000

[76.2]

3.00

[76.2]

F

±0.015

[±0.4]

1.750

[44.5]

2.190

[55.6]

2.190

[55.6]

G

±0.010

[±0.25]

0.188

[4.8]

0.250

[6.4]

0.250

[6.4]

H

±0.015

[±0.4]

0.800

[20.3]

0.950

[24.1]

1.000

[25.4]

J

±0.015

[±0.4]

0.375

[9.5]

0.375

[9.5]

0.312

[7.9]

K

±0.005

[±0.13]

0.188

[4.8]

0.188

[4.8]

0.188

[4.8]

L

±0.015

[±0.4]

0.225

[5.7]

0.200

[5.1]

0.200

[5.1]

M

N

12-24

±0.015

[±0.4]

-

P

Mtg.

Screw

(2) #8

-

12-24

-

(2) #8

3.000

[76.2]

1/4-20

1.188

[30.7]

(4) #8

Document Number: 64325

Revision: 20-09-10

For technical questions, contact:

powertron@vishaypg.com

www.powertron.de

3

UAL Series

Powertron

Dimensions

(continued)

Type

UAL-300

MAX

A

MAX

B

MAX

C

MAX

D

MAX

E

±0.010

[±0.3]

F

±0.010

[±0.3]

G

MAX

H

MAX

J

MAX

K

±0.010

[±0.3]

L

MAX

M

±0.010

[±0.3]

N

2.854

[72.5]

7.260

[184.4]

1.646

[41.8]

1.791

[45.5]

5.028

[127.7]

4.094

[104.0]

2.323

[59.0]

0.807

[20.5]

0.488

[12.4]

0.217

[5.5]

0.260

[6.6]

5.567

[141.4]

2.047

[52.0]

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For technical questions, contact:

powertron@vishaypg.com

Document Number: 64325

Revision: 20-09-10

Legal Disclaimer Notice

Vishay Precision Group

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, “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.

The product specifications do not expand or otherwise modify Vishay Precision Group’s terms and

conditions of 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 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 Vishay Precision Group’s knowledge of typical requirements that

are often placed on Vishay Precision Group 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.

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

by any conduct of Vishay Precision Group.

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

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Precision Group for any damages arising or resulting from such use or sale. Please contact authorized

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such applications.

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

Document No.: 63999

Revision: 27-Apr-2011

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1

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Maker	Vishay
package instruction	ROHS COMPLIANT
Reach Compliance Code	compli
ECCN code	EAR99
structure	All-Welded
JESD-609 code	e3
Installation features	CHASSIS MOUNT
Number of terminals	2
Maximum operating temperature	275 °C
Minimum operating temperature	-55 °C
Package height	14.2 mm
Package length	47.5 mm
Package shape	RECTANGULAR PACKAGE
Package form	Chassis Mou
Package width	27.4 mm
Rated power dissipation(P)	12 W
Rated temperature	25 °C
resistance	0.294 Ω
Resistor type	FIXED RESISTOR
surface mount	NO
technology	WIRE WOUND
Terminal surface	Matte Tin (Sn)
Terminal shape	LUG
Tolerance	0.01%

UAL-250.294OHM0.01%

UAL-250.294OHM0.01% Overview

UAL-250.294OHM0.01% Parametric

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