概述
数据手册MR20X472-PTL 概述
High power rating and compact size
MR20X472-PTL 数据手册
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PDF下载Approval sheet
MR18X, MR20X, MR25X
1%, 5%
Power chip resistors
Size 1218, 2010, 2512
( Automotive & Anti-sulfuration )
*Contents in this sheet are subject to change without prior notice.
Page 1 of 7
ASC_MR18-20-25X_V04
DEC 2016
Approval sheet
FEATURE
1. High power rating and compact size
2. High reliability and stability
3. Automotive AEC Q-200 compliant
4. 100% CCD visual inspection
5. RoHS compliant and Lead free product
APPLICATION
Power supply
Industry
Motor control
M/B Computer
Automotives
Servo
DESCRIPTION
The resistors are constructed in a high grade ceramic body (aluminum oxide). Internal metal electrodes are
added at each end and connected by a resistive paste that is applied to the top surface of the substrate. The
composition of the paste is adjusted to give the approximate resistance required and the value is trimmed to
nominated value within tolerance which controlled by laser trimming of this resistive layer.
The resistive layer is covered with a protective coat. Finally, the two external end terminations are added. For
ease of soldering the outer layer of these end terminations is a Tin (lead free) alloy.
Fig 1. Construction of 2512, 2010 Chip-R
Fig 2. Construction of 1218 Chip-R
Page 2 of 7
ASC_MR18-20-25X_V04
DEC 2016
Approval sheet
QUICK REFERENCE DATA
Item
Series No.
General Specification
MR20
MR18
MR25
Size code
1218(3248)
2010 ( 5025 ),
5% (E24); 1% (E24+E96)
1 ~ 10M, Jumper (0)
200 ppm/C
100 ppm/C
200 ppm/C
0.75 W
2512(6432)
Resistance Tolerance
Resistance Range
TCR (ppm/C)
< 10
200 ppm/C
100 ppm/C
200 ppm/C
1W
200 ppm/C
100 ppm/C
200 ppm/C
1W
10 ~ 1M
> 1M
Max. dissipation at Tamb=70C
Max. Operation Voltage (DC or RMS)
Max. Overload Voltage (DC or RMS)
Climatic category (IEC 60068)
200V
200V
250V
400V
400V
500V
55/155/56
Test conditions for jumper ( 0 ohm )
Type
MR18X
1 W
MR20X
3/4 W
MR25X
1 W
Power Rating At 70C
Resistance
Max. 50mR
4.5 A
Max. 50mR
3.2 A
Max. 50mR
4.5 A
Rated Current
Peak Current
11 A
8 A
11 A
Operating Temperature
-55C ~ 155℃
Note :
1.
This is the maximum voltage that may be continuously supplied to the resistor element, see “IEC publication
60115-8”
2.
Max. Operation Voltage : So called RCWV (Rated Continuous Working Voltage) is determined by
RCWV RatedPowerResistance Value or Max. RCWV listed above, whichever is lower.
MECHANICAL DATA (unit : mm)
TYPE
MR18
MR20
MR25
L
3.050.15
4.600.20
0.550.10
0.450.25
0.500.25
5.000.20
2.500.20
0.550.10
0.650.25
0.600.25
6.400.20
3.200.20
0.600.10
0.650.25
0.900.25
W
T
Tt
Tb
Page 3 of 7
ASC_MR18-20-25X_V04
DEC 2016
Approval sheet
MARKING
Each resistor is marked with a four-digit code on the protective coating to designate the nominal resistance
value 5%, 1% tolerance !
Size
5%
1%
2512, 2010, 1218
4-digits marking
4-digits marking
FUNCTIONAL DESCRIPTION
Product characterization
Standard values of nominal resistance are taken from the E96 & E24 series for resistors with a tolerance of 5%
& 1%. The values of the E24/E96 series are in accordance with “IEC publication 60063”.
Derating curve
The power that the resistor can dissipate depends on the operating temperature; see Fig.3
Fig 3
Maximum dissipation in percentage of rated power as a
function of the ambient temperature
MOUNTING
Due to their rectangular shapes and small tolerances, Surface Mountable Resistors are suitable for handling by
automatic placement systems. Chip placement can be on ceramic substrates and printed-circuit boards (PCBs).
Electrical connection to the circuit is by individual soldering condition. The end terminations guarantee a reliable
contact.
SOLDERING CONDITION
The robust construction of chip resistors allows them to be
completely immersed in a solder bath of 260C for 10
seconds. Therefore, it is possible to mount Surface Mount
Resistors on one side of a PCB and other discrete
components on the reverse (mixed PCBs).
Surface Mount Resistors are tested for solderability at
235C during 2 seconds. The test condition for no leaching
is 260C for 30 seconds. Typical examples of soldering
processes that provide reliable joints without any damage
are given in Fig 4.
Fig 4. Infrared soldering profile for Chip Resistors
Page 4 of 7
ASC_MR18-20-25X_V04
DEC 2016
Approval sheet
CATALOGUE NUMBERS
The resistors have a catalogue number starting with .
MR25
X
472_
J
T
L
Size code
Type code
X :
Resistance code
Tolerance
Packaging code
Termination
code
MR25 : 2512
MR20 : 2010
MR18 : 1218
T
: 7” Reeled taping
: 10” Reeled taping
: 13” Reeled taping
: Bulk
5%: E24: 2 significant digits F : 1%
followed by no. of zeros
L
= Sn base
Q
G
B
5%: 1-10M
1%: 10-1M
W :
J : 5%
(lead free)
100 = 101_
P : Jumper
10K = 103
11%: E96: 3 significant
digits followed by no. of
zeros
1%: < 10; >1M
102
=1020
=3742
37.4K
* Anti-Sulfuration test conditions: H2S 3ppm, 40’C, RH 90%, 1000hrs, criteria: +/-1% !
* 100% CCD visual inspection to guarantee visual quality !
TEST AND REQUIREMENTS
Essentially all tests are carried out according to the schedule of IEC publication 115-8, category
LCT/UCT/56(rated temperature range : Lower Category Temperature, Upper Category Temperature; damp
heat, long term, 56 days). The testing also meets the requirements specified by EIA, EIAJ and JIS.
The tests are carried out in accordance with IEC publication 68, "Recommended basic climatic and mechanical
robustness testing procedure for electronic components" and under standard atmospheric conditions according
to IEC 60068-1, subclause 5.3. Unless otherwise specified, the following value supplied :
Temperature: 15°C to 35°C.
Relative humidity: 45% to 75%.
Air pressure: 86kPa to 106 kPa (860 mbar to 1060 mbar).
All soldering tests are performed with midly activated flux.
REQUIREMENT
TEST
PROCEDURE / TEST METHOD
Resistor
0
Electrical
- DC resistance values measurement
Within the specified tolerance
Characteristics
- Temperature Coefficient of Resistance (T.C.R)
Refer to “QUICK REFERENCE DATA”
Natural resistance change per change in degree centigrade.
JISC5201-1: 1998
R2 R
R
1t2 t1
106 (ppm/C) t1 : 20°C+5°C-1°C
1
Clause 4.8
R1 : Resistance at reference temperature
R2 : Resistance at test temperature
Un-mounted chips completely immersed for 10±1second in a SAC
solder bath at 270℃±5ºC
R/R max. (0.5%+0.05)
Resistance to
soldering heat
(R.S.H)
No visible damage
MIL-STD-202
method 210
Page 5 of 7
ASC_MR18-20-25X_V04
DEC 2016
Approval sheet
TEST
REQUIREMENT
Resistor
PROCEDURE / TEST METHOD
0
a) Bake the sample for 155℃ dwell time 4hrs/ solder dipping
235℃/ 5sec.
Solderability
95% coverage min., good tinning and no
visible damage
J-STD-002
b) Steam the sample dwell time 1 hour/ solder dipping
260℃/ 7sec.
1000 cycles, -55℃ ~ +155℃, dwell time 5~10min
652C, 80~100% RH, 10 cycles, 24 hours/ cycle
R/R max. (0.5%+0.05)
Temperature cycling
JESD22
No visible damage
<50m
<50m
Method JA-104
R/R max. (0.5%+0.05)
Moisture Resistance
MIL-STD-202
No visible damage
method 106
1000+48/-0 hours; 85C, 85% RH, 10% of operation power
1000+48/-0 hours; 35% of operation power, 1252C
R/R max. (1.0%+0.05)
Bias Humidity
MIL-STD-202
method 103
<50m
<50m
No visible damage
Operational Life
R/R max. (1%+0.05)
MIL-STD-202
method 108
No visible damage
High Temperature
Exposure
1000+48/-0 hours; without load in a temperature chamber
R/R max. (1.0%+0.05)
controlled 1553C
No visible damage
<50m
MIL-STD-202
Method 108
Mechanical Shock
MIL-STD-202
method 213
Board Flex
1/2 Sine Pulse / 1500g Peak / Velocity 15.4ft/sec
Within the specified tolerance
No visible damage
<50m
<50m
Resistors mounted on a 90mm glass epoxy resin PCB(FR4),
bending once 2mm for 10sec
R/R max. (1.0%+0.05).
AEC-Q200-005
Terminal strength
AEC-Q200-006
Vibration
No visible damage
Pressurizing force: 1.8Kg, Test time: 60±1sec.
No remarkable damage or removal of
the terminations
Test 5g’s for 20min., 12 cycles each of 3 orientations
R/R max. (1.0%+0.05)
MIL-STD-202
method 204
Thermal shock
MIL-STD-202
method 107
ESD
No visible damage
<50m
Test –55 to 155℃/ dwell time 15min/ Max transfer time 20sec
R/R max. (0.5%+0.05)
300cycles
No visible damage
<50m
<50m
Test contact 3.0KV
R/R max. (1.0%+0.05).
AEC-Q200-002
No visible damage
Page 6 of 7
ASC_MR18-20-25X_V04
DEC 2016
Approval sheet
PACKAGING
Plastic Tape specifications (unit :mm)
Type
MR18
MR20
MR25
A
B
W
F
E
4.90±0.20
5.50±0.20
6.90±0.20
3.55±0.30
2.80±0.20
3.60±0.20
12.00±0.30
5.50±0.10
1.75±0.10
Type
MR18
MR20
MR25
P1
P0
T
D
8.00±0.10
1.30±0.20
0.1
0.0
4.00±0.10
1.50
4.00±0.10
MAX1.2
Reel dimensions
Symbol
(unit : mm)
A
B
C
D
13.0±0.2
14.0±0.2
178.0±2.0
60.0±1.0
Taping quantity
MR20, MR25 by plastic tape taping 4,000 pcs per reel.
MR18 by plastic tape taping 3,000 pcs per reel
Page 7 of 7
ASC_MR18-20-25X_V04
DEC 2016
MR20X472-PTL 相关器件
| 型号 | 制造商 | 描述 | 价格 | 文档 |
| MR20X473 JTL | WALSIN | 2010(5025), 47000Ω, ±5%, 1/2W | 获取价格 |
|
| MR20X474 JTL | WALSIN | 2010(5025), 470000Ω, ±5%, 1/2W | 获取价格 |
|
| MR20X475 JTL | WALSIN | 2010(5025), 4700000Ω, ±5%, 1/2W | 获取价格 |
|
| MR20X4750FTL | WALSIN | 2010(5025), 475Ω, ±1%, 1/2W | 获取价格 |
|
| MR20X4751FTL | WALSIN | 2010(5025), 4750Ω, ±1%, 1/2W | 获取价格 |
|
| MR20X4752FTL | WALSIN | 2010(5025), 47500Ω, ±1%, 1/2W | 获取价格 |
|
| MR20X4753FTL | WALSIN | 2010(5025), 475000Ω, ±1%, 1/2W | 获取价格 |
|
| MR20X47R0FTL | WALSIN | 2010(5025), 47.0Ω, ±1%, 1/2W | 获取价格 |
|
| MR20X47R5FTL | WALSIN | 2010(5025), 47.5Ω, ±1%, 1/2W | 获取价格 |
|
| MR20X4870FTL | WALSIN | 2010(5025), 487Ω, ±1%, 1/2W | 获取价格 |
|
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