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FMF-25FTF49R9

Description
Fixed Resistor, Metal Film, 0.25W, 49.9ohm, 250V, 1% +/-Tol, 100ppm/Cel, Through Hole Mount, AXIAL LEADED
CategoryPassive components    The resistor   
File Size236KB,2 Pages
ManufacturerYAGEO
Websitehttp://www.yageo.com/
Environmental Compliance  
Download Datasheet Parametric View All

FMF-25FTF49R9 Overview

Fixed Resistor, Metal Film, 0.25W, 49.9ohm, 250V, 1% +/-Tol, 100ppm/Cel, Through Hole Mount, AXIAL LEADED

FMF-25FTF49R9 Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
package instruction,
Reach Compliance Codecompliant
ECCN codeEAR99
Other featuresFLAME PROOF
JESD-609 codee3
Manufacturer's serial numberFMF
Installation featuresTHROUGH HOLE MOUNT
Number of terminals2
Maximum operating temperature155 °C
Minimum operating temperature-55 °C
Package shapeTUBULAR PACKAGE
method of packingAMMO PACK
Rated power dissipation(P)0.25 W
Rated temperature70 °C
resistance49.9 Ω
Resistor typeFIXED RESISTOR
surface mountNO
technologyMETAL FILM
Temperature Coefficient100 ppm/°C
Terminal surfaceMatte Tin (Sn)
Terminal shapeWIRE
Tolerance1%
Operating Voltage250 V
Base Number Matches1
Leaded ResistoRs
Metal Film Resistors
Flame-Proof Type
Normal & Miniature Style [ FMF Series ]
FeatURes
Power Rating
Resistance Tolerance
T.C.R.
Flameproof Multi-layer Coating Meets
Flameproof Feature Meets Overload Test
1/4W, 1/2W, 1W, 2W, 3W
±1%
±50ppm/°C, ±100ppm/°C
UL-94V-0
UL-1412
iNtRodUCtioN
The FMF Series Flame Proof Resistors are
manufactured using vacuum sputtering system
to deposit multiple layers of mixed metals
alloy and passivative materials onto a carefully
treated high grade ceramic substrate. After a
helical groove has been cut in the resistive layer,
tinned connecting leads of electrolytic copper
are welded to the end-caps. The resistors are
coated with layers of gray color lacquer.
deRatiNG CURVe
For resistors operated in ambient temperatures above 70°C, power rating must be derated
in accordance with the curve below.
Rated Load (%)
70
100
80
60
40
20
20
40
60
80
100 120 140 160
155 °C
Ambient Temperature (°C)
diMeNsioNs
stYLe
Normal
ød
H
L
øD
FMF-25
FMF-50
FMF100
FMF200
Miniature
FMF50S
FMF1WS
FMF2WS
FMF3WS
diMeNsioN
L
6.3±0.5
9.0±0.5
11.5±1.0
15.5±1.0
ød
2.4±0.2
3.3±0.3
4.5±0.5
5.0±0.5
H
28±2.0
26±2.0
35±2.0
33±2.0
Unit: mm
ød
0.55±0.05
0.55±0.05
0.8±0.05
0.8±0.05
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