1) Made of same material as the general purpose chip resistors (MCR10 / 18).
2) Highly reliable chip resistor
Ruthenium oxide dielectric offers superior resistance to the elements.
3) Electrodes not corroded by soldering
Both flow and reflow soldering can be used.
4) ROHM resistors have approved ISO-9001 certification. Design and specifications are subject to change without notice.
Carefully check the specification sheet supplied with the product before using or ordering it.
!
Ratings
Item
Rated power
Conditions
Power must be derated according to the power derating curve in
Figure 1 when ambient temperature exceeds 70˚C.
100
80
60
40
20
0
Specifications
0.5W (1 / 2W)
at 70˚C
POWER LOAD (%)
-55
0
70
100
125
AMBIENT TEMPERATURE (˚C)
Fig.1
Max. operating voltage
Max. overload voltage
Max. intermittent overload voltage
200V
400V
400V
Rated voltage
The voltage rating is calculated by the following equation. If the value
obtained exceeds the maximum operating voltage, the voltage rating
is equal to the maximum operating voltage.
E: Rated voltage (V)
E= P
×
R
P: Rated power (W)
R: Nominal resistance (Ω)
Nominal resistance
Operating temperature
See Table 1.
- 55˚C to + 125˚C
Jumper type
Resistance
Rated current
Peak current
Operating temperature
Max. 50mΩ
3A
15A
- 55˚C to + 125˚C
Table 1
Resistance tolerance
F
( ± 1%)
Resistance range
(Ω)
10
≤
R
<
100k
1.0
≤
R
<
2.2
2.2
≤
R
<
10
(E24,96)
100
≤
R
≤
180k (E24,96)
J
( ± 5%)
(E24)
(E24)
Resistance temperature coefficient
(ppm / ˚C)
± 200
± 100
500 ± 350
± 500
± 200
± 350
10
≤
R
≤
330k (E24)
330k
<
R
≤
560k (E24)
•
Before using components in circuits where they will be exposed to transients such as pulse loads (short-duration, high-level loads), be certain to evaluate the
component in the mounted state. In addition, the reliability and performance of this component cannot be guaranteed if it is used with a steady state voltage that
is greater than its rated voltage.
MCR50
Resistors
!
Characteristics
Characteristics
DC resistance
Resistance temperature
characteristics
Short time overload
± (2.5% + 0.1Ω)
Specifications
Chip resistance
Jumper type
F: ± 1%
J: ± 5%
Max. 50mΩ
Test method
JIS C 5202 5.1
Applied voltage: A
JIS C 5202 5.2
Test conditions: + 25 / - 55 / + 25 / + 125˚C
JIS C 5202 5.5
Rated voltage (current):× 2.5, 5s.
Maximum overload voltage: 400V
JIS C 5202 5.6
Test voltage: 100V, 1min.
Assembled state
Metal block
observation
point A
Insulation plate
See Table 1.
Max. 50mΩ
Min. 1,000MΩ between terminal and board
Insulation resistance
Test resistor
Metal plate
Observation Insulation
sheath
R 0.5
point B
Spring-loaded
pressure
Withstand voltage
Do not damage insulation or cause a short circuit.
JIS C 5202 5.7
Test voltage: 500V
JIS C 5202 5.8
Rated voltage (current):× 2.5
(1s: ON - 25s: OFF)
×
10,000cyc.
JIS C 5202 6.1
JIS C 5202 6.4
Soldering conditions: 260 ± 5˚C
Soldering time: 10 ± 1s.
JIS C 5202 6.5
Rosin methanol: (25%WT)
Soldering conditions: 235 ± 5˚C
Soldering time: 2.0 ± 0.5s.
JIS C 5202 7.2
125˚C
Test time: 11,000 to 1,048 hrs.
JIS C 5202 7.10
Rated voltage (current) 70˚C
1.5h: ON - 0.5h: OFF
Test time: 1,000 to 1,048 hrs.
JIS C 5202 7.9
Rated voltage (current) 60˚C, 95%Rh
1.5h: ON - 0.5h: OFF
Test time: 1,000 to 1,048 hrs.
JIS C 5202 7.5
85˚C, 85%RH
Test time: 1,000 to 1,048 hrs.
JIS C 5202 7.4
Test temperature: - 55˚C to + 125˚C 100cyc.
JIS C 5202 6.9
Room temperature, static immersion, 1 min.
Solvent: Isopropyl alcohol
Intermittent overload
Terminal strength
(against bending of circuit board)
Resistance to soldering heat
± (5.0% + 0.1Ω)
Max. 50mΩ
± (1.0% + 0.05Ω)
Max. 50mΩ
There must be no mechanical damage.
± (1.0% + 0.05Ω)
Max. 50mΩ
Outside must not be noticeably damaged.
95% of terminal surface must be covered by
new solder, and there must be
no soldering corrosion.
Solderability
Resistance to dry heat
± (3.0% + 0.1Ω)
Max. 100mΩ
Endurance
(rated load)
± (3.0% + 0.1Ω)
Max. 100mΩ
Endurance
(under load in damp environment)
± (5.0% + 0.1Ω)
Max. 100mΩ
Resistance to humidity
(steady state)
± (3.0% + 0.1Ω)
Max. 100mΩ
Temperature cycling
± (1.0% + 0.05Ω)
Max. 50mΩ
Resistance to solvents
± (0.5% + 0.05Ω)
Max. 100mΩ
Markings must not be dissolved away.
MCR50
Resistors
!
External dimensions
(Units: mm)
0.6 ± 0.25
No.
Material
Thick dielectric glaze of ruthenium
(only silver used for jumper)
0.55 ± 0.15
0.6 ± 0.25
5.0 ± 0.15
Thick film of palladium-silver for primary electrode
There are so many good books in the forum. Let's organize a reading activity. Find a few people to host it, read professional books regularly, and discuss together....
I met a lot of great people at the Raspberry Pi meetup at the weekend. One of them was Vicky from Yorkshire, who was crocheting on her comfy sofa! [/size] [img=512,384]http://www.micropython.org.cn/bb...
The shape of the photocurrent pulse [1] is very important for LIV scanning. Ideally, the photocurrent pulse should have a perfectly flat top, representing a " fixed " value that is equal to the photoc...
ADI online seminar Instrumentation Amplifier: Common Application Problems and Solutions : https://training.eeworld.com.cn/course/4793The instrumentation amplifier is a high-gain, DC-coupled amplifier ...
1 Introduction
The high temperature tester is mainly used for temperature tracking measurement and data acquisition during the heating process. By systematically analyzing the test data, the...[Details]
As cellular phones become more advanced, the power consumption of the system during operation and the power consumption during standby are also increasing. Therefore, the power management design of...[Details]
Today, with energy becoming increasingly scarce, the utilization of natural energy has become the focus of people's attention. Among various natural energies, the endless solar energy is highly fav...[Details]
introduction
At present, measuring instruments are developing towards networking, and each individual embedded instrument will become a node on the Internet. This system realizes the network...[Details]
With the popularity of digital appliances, rechargeable batteries can be seen everywhere in people's daily lives and have become one of the indispensable daily necessities.
This article gives ...[Details]
1 Introduction
Automatic Test
System The ATS (Automatic Test System) integrates all the stimulus and measurement equipment required for testing.
The computer
efficiently comp...[Details]
0 Introduction
In the design and construction of communication systems,
communication power supply
is called the heart of the communication system. The power supply system will dire...[Details]
0 Introduction
PROFIBUS is an open digital communication system with a wide range of applications, which has been included in the international standards IEC 61158 and IEC 61784. Since the gen...[Details]
For a long time, my country has implemented "community-style collective heating" for hot water heating, and settled accounts based on the heating area, regardless of whether the user uses heat. Thi...[Details]
TPMS is the abbreviation of "Tire Pressure Monitoring System". It is mainly used to automatically monitor the tire pressure in real time when the car is driving, and to alarm for tire leakage and l...[Details]
Many industrial fields such as industrial automation, logistics, and smart grids require that machinery and products be safe and have passed functional safety certification. When developing machine...[Details]
1. Introduction
Due to the good programmability and superior performance of FPGA, the number of embedded systems using FPGA chips in LCD splicing screens is increasing rapidly, especially in t...[Details]
Overview
Modern
amplifier RF instruments
have impressive measurement capabilities and accuracy far exceeding their predecessors. However, these instruments cannot reach their full pote...[Details]
Due to work needs, I need to implement square root operations on a single-chip microcomputer. Currently, most square root methods use Newton's
iteration method. After checking some information,...[Details]
There are multiple methods for measuring the temperature of electrical contacts in power transmission and distribution. The more traditional methods include temperature measurement wax sheet method...[Details]
Suggestions & Announcements
京公网安备 11010802033920号
EEWORLD
