MCMF0W4FF8251A50 반도체 회로 부품 판매점
Metal Film Fixed Resistor
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 Multicomp |
Metal Film Fixed Resistor
Specifications:
Type
Rated Power
Max. Working Voltage
Max. Overload Voltage
Dielectric Withstanding Voltage
Rated Ambient Temp
Operating Temp. Range
Resistance Tolerance
Resistance Range
: MCMF
: 0.25W at 70°C
: 250V
: 500V
: 500V
: 70°C
: -55°C to +155°C
: ±1%
: 10Ω to 1MΩ
Power Rating:
Resistors shall have a power rating based on continuous full load operation at an ambient temperature of 70°C.
For temperature in excess of 70°C, the load shall be derated as shown in the below figure.
Voltage Rating:
Resistors shall have a rated direct-current (DC) continuous working voltage or an approximate sine-wave root-mean-square
(RMS) alternating-current (AC) continuous working voltage at commercialline frequency and waveform curresponding to the
power rating , as determined from the following formula :
RCWV = √P × R
Were : RCWV = R ated DC or RMS AC continuous working voltage at commercial-line frequency and waveform (V)
P = Power Rating (W)
R = Nominal Resistance (Ω)
In no case shall the rated DC or RMS AC continuous working voltage be greater than the applicable maximum value.
www.element14.com
www.farnell.com
www.newark.com
Page <1>
19/09/13 V1.0
Free Datasheet http://www.datasheet-pdf.com/
Metal Film Fixed Resistor
Construction
No Name
Material
1 Basic Body
Rod Type Ceramics
2 Resistance Film
Metal Film
3 End Cap
Steel (Tin plated iron surface)
4 Lead Wire Annealed copper wire coated with tin
5 Joint
By Welding
6
Coating
Insulated epoxy resin ( Colour : Sky Blue )
7 Colour Code
Epoxy Resin
Metal Film Fixed Resistors
Characteristics
Limits
DC. resistance Must be within the specified tolerance
Test Methods( JIS C 5201-1 )
The limit of error of measuring apparatus shall not exceed
allowable range or 1% of resistance tolerance
Insulation
resistance
Insulation resistance is10,000MΩ Min.
Resistors shall be clamped in the trough of a 90° metallic
V-block or foil method use a metal foil shall be wrapped closely
around the body of the resistor. After that shall be tested at DC
potential respectively specified in the above list for
60 +10/-0 secs.
Dielectric
withstanding
voltage
No evidence of flashover mechanical
damage, arcing or insulation break
down
Resistors shall be clamped in the trough of a 90° metallic
V-block or foil method use a metal foil shall be wrapped closely
around the body of the resistor. After that shall be tested at
AC potential respectively specified in the table 1. for
60 +10/-0 secs.
Temperature
coefficient
Within the temperature coefficient
specified below :± 50 PPM/°C Max.
Natural resistance change per temp.
degree centigrade
R2-R1
× 106
R1(t2-t1)
(PPM/°C)
R1: Resistance value at room temperature (t1)
R2: Resistance value at room temp. plus 100°C (t2)
Short time
overload
Resistance change rate is
± (0.5% + 0.05Ω) Max. with no
evidence of mechanical damage
Permanent resistance change after the application of a
potential of 2.5 times RCWV for 5 seconds
Terminal
strength
No evidence of mechanical damage
Direct load:
Resistance to a 2.5 kgs direct load for 10secs. in the direction
of the longitudinal axis of the terminal leads
Twist test :
Terminal leads shall be bent through 90 ° at a point of about
6mm from the body of the resistor and shall be rotated through
360° about the original axis of the bent terminal in alternating
direction for a total of 3 rotations
Solderability
95 % coverage Min.
The area covered with a new, smooth,clean, shiny and
continuous surface free from concentrated pinholes.
Test temp. of solder : 245°C ± 3°C
Dwell time in solder : 2 ~ 3 seconds
www.element14.com
www.farnell.com
www.newark.com
Page <2>
19/09/13 V1.0
Free Datasheet http://www.datasheet-pdf.com/
|
PDF 파일 내의 페이지 : 총 7 페이지
제조업체: Multicomp
( multicomp )
MCMF0W4FF8251A50 data
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[ MCMF0W4FF8251A50.PDF ]
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
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