MF1/4ELM2493D datasheet, PDF - EEWORLD Datasheet

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MF1/4ELM2493D: DescriptionFixed Resistor, Metal Film, 0.25W, 249000ohm, 250V, 0.5% +/-Tol, -25,25ppm/Cel,; CategoryPassive components The resistor; File Size95KB，2 Pages; ManufacturerKOA

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MF1/4ELM2493D Overview

Fixed Resistor, Metal Film, 0.25W, 249000ohm, 250V, 0.5% +/-Tol, -25,25ppm/Cel,

MF1/4ELM2493D Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Objectid	816885458
Reach Compliance Code	not_compliant
structure	Cylindrical
JESD-609 code	e0
Lead diameter	0.6 mm
Lead length	30 mm
Number of terminals	2
Maximum operating temperature	155 °C
Minimum operating temperature	-55 °C
Package diameter	2.3 mm
Package length	6.3 mm
Package shape	CYLINDRICAL PACKAGE
Package form	Axial
Rated power dissipation(P)	0.25 W
Guideline	MIL-R-10509
resistance	249000 Ω
Resistor type	FIXED RESISTOR
series	MF1/4(25PPM,D TOL)
technology	METAL FILM
Temperature Coefficient	-25,25 ppm/°C
Terminal surface	Tin/Lead (Sn/Pb)
Tolerance	0.5%
Operating Voltage	250 V

MF1/4ELM2493D Preview

precision metal film leaded resistor

features

•

Units meet or exceed the requirements of MIL-R-10509

•

Suitable for automatic machine insertion

•

Marking: Blue-gray body color with color-coded bands

dimensions and construction

Trimming Line

Ceramic Core

Type

MF1/4

MF1/2

MF1

Marking

Resistive

Film

End

Cap

Lead

Wire

L (ref.)

.248

(6.3)

.374

(9.5)

.610

(15.5)

Dimensions

inches

(mm)

C (max.)

.280

(7.1)

.437

(11.1)

.721

(18.3)

.091±.012

(2.3±0.3)

.024±.002 1.18±.118

.138±.016

(0.6±0.05) (30.0±3.0)

(3.5±0.4)

.217±.02

(5.5±0.5)

.031±.002 1.50±.126

(0.8±0.05) (38.1±3.2)

Insulation Coating

leaded

resistors

ordering information

Old Part #

MF55, MF60, MF65

Type

New Part #

Type

T.C.R.

1/4

Power

Rating

1/4: 0.25W

1/2: 0.5W

1: 1W

1002

Resistance

T.C.R.

E: ±25

C: ±50

D: ±100

Tolerance

Termination

Material

L: SnPb

C: SnCu

T52

Packaging

T52

Taping and

Forming

1/4: T26,

T52, VT, VTP,

VTE, M10,

M25, U

1/2: T52,

M12.5, M15

1: T521

Packaging

A: Ammo

R: Reel

1002

Nominal

Resistance

3 significant

figures + 1

multiplier

“R” indicates

decimal on

value <10Ω

Tolerance

B: ±0.1%

C: ±0.25%

D: ±0.5%

F: ±1.0%

For further information on packaging,

please refer to Appendix C.

Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.

180

KOA Speer Electronics, Inc.

• Bolivar Drive • P Box 547 • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com

.O.

precision metal film leaded resistor

applications and ratings

Part

Designation

MF1/4D

MF1/4C

MF1/4E

MF1/2D

MF1/2C

MF1/2E

MF1D

MF1C

MF1E

0.50W

700V

0.25W

500V

Power

Rating

@ 70°C

Minimum

Dielectric

Withstanding

Voltage

T.C.R.

(ppm/°C)

(B±0.1%)

D: ±100

C: ±50

E: ±25

D: ±100

C: ±50

E: ±25

D: ±100

C: ±50

E: ±25

47.5Ω - 1.0MΩ 47.5Ω - 1.5MΩ

—

10Ω - 5.11MΩ 1.0Ω - 6.81MΩ

30.1Ω - 750KΩ 30.1Ω - 1.0MΩ

—

Resistance Range

E-96

(C±0.25%)

(D±0.5%)

10Ω - 5.9MΩ

(F±1.0%)

1.0Ω - 22.1MΩ

1.0Ω - 2.21MΩ

1.0Ω - 33.2MΩ

1.0Ω - 5.6MΩ

350V

700V

250V

500V

30.1Ω - 1.0MΩ 30.1Ω - 1.0MΩ

10Ω - 10MΩ

-55°C

+155°C

Absolute

Maximum

Working

Voltage

Absolute

Operating

Maximum

Temperature

Overload

Range

Voltage

24.3Ω - 750KΩ 24.3Ω - 1.0MΩ

47.5Ω - 2.0MΩ 47.5Ω - 2.0MΩ

47.5Ω - 1.0MΩ 47.5Ω - 2.49MΩ

47.5Ω - 2.0MΩ 7.5Ω - 2.49MΩ 47.5Ω - 4.64MΩ 47.5Ω - 5.11MΩ

environmental applications

Derating Curve

100

% Rated Power

-60 -40 -20

-55

Temperature Rise (°C)

Surface Temperature Rise

MF1/4

100

MF1

MF1/2

80 100 120 140

Ambient Temperature

(°C)

160

155

% Rated Power

leaded

resistors

Performance Characteristics

Parameter

Resistance

T.C.R.

Overload

Resistance to Solder Heat

Rapid Change of Temperature

Moisture Resistance

Endurance @ 70°C

High Temperature Exposure

1.0

Requirement

∆

R ±(% + 0.05Ω)

Limit

Typical

Within regulated tolerance

—

Within specified T.C.R.

0.5

0.3

0.25

0.3

0.75

0.5

Test Method

25°C

+25°C/-55°C and +25°C/+125°C

Rated voltage x 2.5 or maximum overload voltage

for 5 seconds, whichever is less

260°C ± 5°C for 10 seconds ± 1 second

-55°C (30 minutes)/+155°C (30 minutes), 5 cycles

40°C ± 2°C, 90 - 95% RH, 1000 hours, 1.5 hour ON,

0.5 hr OFF cycle

70°C ± 2°C, 1000 hours, 1.5 hour ON, 0.5 hr OFF cycle

+125°C, 100 hours

Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.

KOA Speer Electronics, Inc.

• Bolivar Drive • P Box 547 • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com

.O.

181

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