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MMF-25FRF649R

Description
RES SMD 1% 1/4W MELF
CategoryPassive components   
File Size141KB,3 Pages
ManufacturerYAGEO
Websitehttp://www.yageo.com/
Environmental Compliance
Download Datasheet Parametric View All

MMF-25FRF649R Overview

RES SMD 1% 1/4W MELF

MMF-25FRF649R Parametric

Parameter NameAttribute value
resistance649 Ohms
Tolerance±1%
Power (W)0.25W,1/4W
componentmetal film
characteristic-
Temperature Coefficient±100ppm/°C
Operating temperature-55°C ~ 155°C
Package/casingMELF,0207
Supplier device packagingMELF
size/dimensions0.087" diameter x 0.232" length (2.20mm x 5.90mm)
Height - Installation (maximum)-
Number of terminals2
failure rate-
Through-hole 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
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. 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 (%)
70
100
80
60
40
20
20
40
60
80
100 120 140 160
155 °C
Ambient Temperature (°C)
DiMeNsioNs
sTYle
D
C
L
Normal
MMF-12
MMF-25
MMF-50
Miniature
MMF25S / MMF204
MMF50S / MMF207
MMF1WS
DiMeNsioN
l
3.50±0.2
5.90±0.2
8.50±0.2
D
1.40±0.15
2.20±0.1
3.20±0.2
Unit: mm
C Min.
0.5
0.5
0.5

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