Through-hole resistors
Melf Metal Film Resistors
High Power Type
Ultra Miniature Style [ MMP Series ]
FEATURES
Power Rating
1W, 2W
Resistance Tolerance
±1%, ±2%, ±5%
T.C.R.
±50ppm/°C, ±100ppm/°C
DERATING CURVE
For resistors operated in ambient temperatures above 70°C, power rating must be derated
in accordance with the curve below.
INTRODUCTION
The MMP Series Melf Metal Film High Power
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 and high
power in small packages.
Rated Load (%)
70
155 °C
100
80
60
40
20
20
40
60
80
100 120 140 160
DIMENSIONS
Ambient Temperature (°C)
Unit: mm
D
C
L
STYLE
DIMENSION
Ultra Miniature
L
D
C Min.
MMP100
5.9±0.2
2.2±0.1
0.5
MMP200
8.5±0.2
3.2±0.2
0.5
23
Note:
ELECTRICAL CHARACTERISTICS
STYLE
MMP100
MMP200
Power Rating at 70°C
1W
2W
Maximum Working Voltage
350V
Maximum Overload Voltage
700V
Voltage Proof on Insulation
500V
Resistance Range
1Ω - 1MΩ & 0Ω for E24 & E96 series value
Operating Temp. Range
-55°C to +155°C
Temperature Coefficient
±50ppm/°C, ±100ppm/°C
Note: Special value is available on request
ENVIRONMENTAL CHARACTERISTICS
PERFORMANCE TEST
TEST METHOD
APPRAISE
Short Time Overload
IEC 60115-1 4.13
2.5 times RCWV for 5 sec. (Not more than maximum Overload Voltage)
±0.5%+0.05Ω
Voltage Proof on Insulation
IEC 60115-1 4.7
In V-Block for 60 sec., test voltage as above table
No Breakdown
Temperature Coefficient
IEC 60115-1 4.8
Between -55°C to +155°C
By type
Insulation Resistance
IEC 60115-1 4.6
in V-block for 60 Sec.
>10,000MΩ
Solderability
IEC 60115-1 4.17
245±5°C for 3±0.5 Sec.
95% Min. coverage
Solvent Resistance of Marking
IEC 60115-1 4.30
IPA for 5±0.5 Min. with ultrasonic
No deterioration of
coatings and markings
Periodic-pulse Overload
IEC 60115-1 4.39
4 times RCWV 10,000 cycles (1 Sec. on, 25 Sec. off)
±1.0%+0.05Ω
Damp Heat Steady State
IEC 60115-1 4.24
40±2°C, 90-95% RH for 56 days, loaded with 0.1 times RCWV
±2.0%+0.1Ω
Endurance at 70°C
IEC 60115-1 4.25
70±2°C at RCWV (or Umax., Whichever less) for 1,000 Hr. (1.5Hr.on, 0.5Hr. Off) ±2.0%+0.1Ω
Temperature Cycling
IEC 60115-1 4.19
-55°C Room Temp. +155°C Room Temp. (5 cycles)
±0.75%+0.05Ω
Resistance to Soldering Heat
IEC 60115-1 4.18
260±3°C for 10±1 Sec., immersed to a point 3±0.5mm from the body
±0.5%+0.05Ω
Note: RCWV(Rated Continuous Working Voltage) = Power Rating x Resistance Value or Max. working voltage listed above, whichever less.
Revision: 2020
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