MMF50SFTD249R datasheet, PDF - EEWORLD Datasheet

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MMF50SFTD249R: DescriptionFixed Resistor, Metal Film, 0.5W, 249ohm, 250V, 1% +/-Tol, -25,25ppm/Cel,; CategoryPassive components The resistor; File Size268KB，2 Pages; ManufacturerYAGEO; Websitehttp://www.yageo.com/; Environmental Compliance

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MMF50SFTD249R Overview

Fixed Resistor, Metal Film, 0.5W, 249ohm, 250V, 1% +/-Tol, -25,25ppm/Cel,

MMF50SFTD249R Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Objectid	748698263
Reach Compliance Code	compliant
Country Of Origin	Mainland China, Taiwan
ECCN code	EAR99
YTEOL	7.55
structure	Cylindrical
Number of terminals	2
Maximum operating temperature	155 °C
Minimum operating temperature	-55 °C
Package diameter	2.2 mm
Package length	5.9 mm
Package shape	CYLINDRICAL PACKAGE
Package form	MELF
method of packing	Ammo Pack
Rated power dissipation(P)	0.5 W
resistance	249 Ω
Resistor type	FIXED RESISTOR
series	MMF
technology	METAL FILM
Temperature Coefficient	25 ppm/°C
Tolerance	1%
Operating Voltage	250 V

MMF50SFTD249R Preview

Leaded ResistoRs

Melf Metal Film Resistors

General Type

Normal & Miniature Style [ MMF Series ]

FeatURes

Power Rating

Resistance Tolerance

T.C.R.

1/6W, 1/4W, 0.4W, 1/2W, 0.6W, 1W

±0.1%, ±0.25%, ±0.5%, ±1%, ±2%, ±5%

±15ppm/°C, ±25ppm/°C, ±50ppm/°C, ±100ppm/°C, ±200ppm/°C

deRatiNG CURVe

iNtRodUCtioN

The MMF Series Melf Metal Film Resistors are

manufactured using a vacuum sputtering system

to deposit multiple layers of mixed metal

alloys and passivative materials onto a carefully

treated high grade ceramic substrate. After

a helical groove has been cut in the resistive

layer, SMD enabled structure. The resistors are

coated with layers of blue color lacquer.

For resistors operated in ambient temperatures above 70°C, power rating must be derated

in accordance with the curve below.

Rated Load (%)

100

100 120 140 160

155 °C

Ambient Temperature (°C)

diMeNsioNs

stYLe

Normal

MMF-12

MMF-25

MMF-50

Miniature

MMF25S / MMF204

MMF50S / MMF207

MMF1WS

diMeNsioN

3.50±0.2

5.90±0.2

8.50±0.2

1.40±0.15

2.20±0.1

3.20±0.2

Unit: mm

C Min.

0.5

Note:

eLeCtRiCaL CHaRaCteRistiCs

stYLe

Power Rating at 70°C

Maximum Working Voltage

Maximum Overload Voltage

Voltage Proof

Resistance Range

Operating Temp. Range

Temperature Coefficient

MMF-12

1/6W

150V

300V

MMF25s

1/4W

200V

400V

MMF204

0.4W

MMF-25

1/4W

250V

500V

MMF50s

1/2W

MMF207

0.6W

MMF-50

1/2W

350V

700V

MMF1Ws

- 1M

& 0

for E24 & E96 series value, 100

- 100K

for E192 series value

-55°C to +155°C

±15ppm/°C, ±25ppm/°C, ±50ppm/°C, ±100ppm/°C, ±200ppm/°C

Note: Special value is available on request

eNViRoNMeNtaL CHaRaCteRistiCs

PeRFoRMaNCe test

Short Time Overload

Voltage Proof

Temperature Coefficient

Insulation Resistance

Solderability

Solvent Resistance of Marking

Periodic-pulse Overload

Damp Heat Steady State

Endurance at 70°C

Temperature Cycling

Resistance to Soldering Heat

test MetHod

IEC 60115-1 4.13

IEC 60115-1 4.7

IEC 60115-1 4.8

IEC 60115-1 4.6

IEC 60115-1 4.17

IEC 60115-1 4.30

IEC 60115-1 4.39

IEC 60115-1 4.24

IEC 60115-1 4.25

IEC 60115-1 4.19

IEC 60115-1 4.18

2.5 times RCWV for 5 Sec.

in V-block for 60 Sec., test voltage by type

-55°C to +155°C

in V-block for 60 Sec.

235±5°C for 3±0.5 Sec.

IPA for 5±0.5 Min. with ultrasonic

4 times RCWV 10,000 cycles (1 Sec. on, 25 Sec. off)

40±2°C, 90-95% RH for 56 days, loaded with 0.1 times RCWV

70±2°C at RCWV for 1,000 Hr. (1.5 Hr. on, 0.5 Hr. off)

-55°C



Room Temp.



+155°C



Room Temp. (5 cycles)

260±3°C for 10±1 Sec., immersed to a point 3±0.5mm from the body

aPPRaise

±0.5%+0.05

By type

>10,000M Ω

95% Min. coverage

No deterioration of

coatings and markings

±1.0%+0.05

±2.0%+0.1

±0.75%+0.05

±0.5%+0.05

Note: Rated Continuous Working Voltage (RCWV) =

Power Rating x Resistance Value

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