Document No
TMR-XX0S001A
2003/09/12
1/2
Milli-Ohm Resistors
MR Series
Issue d date
page
1. Dimension：
2. Scope：
This specification applied to the products of milli-ohm resistors for MR series
manufactured by TA-ITECHNOLOGY CO.,LTD..
3. Explanation of part number：
MR
Item
08
Diameter
J
tolerance
M
Forming type
A
Pitch
0200
Resistance
P
Plating
J (±5%)
K (±10%)
M
H
C
N
A=5
0200=20m
Ω
P=Plated
B=10
N
=Unplated
C
=12.5
F=Lead Free
D=15
F=20
G=25
H=7.2
J=17
M=7.5
4. Features：
Φd(mm)
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.8
2.0
Max
Current
Rating
2.0
2.5
3.0
4.0
4.5
5.0
5.5
6.0
7.0
7.5
8.0
9.0
9.5
11.0
12.0
Resistance
Tolerance
Operating
Temp(℃)
Temp Coefficient
PPM/℃
-55
J :
±5%
K:
±10%
C M W W i r e :
±5
0 p p m /℃
C N 4 9 W i r e :
±1
0 0 p p m /℃
N i-Cr Wire
±1
5 0 p p m /℃
C N 3 0 W i r e :
±2
0 0 p p m /℃
+155
CN
Wire
±3
0 0 p p m /℃
The specifications beyond above can be designed according to customers’ practical requirement.
TA-I TECHNOLOGY CO., LTD
Document No
TMR-XX0S001A
2003/09/12
2/2
Milli-Ohm Resistors
MR Series
Issue d date
page
5. Electrical & Mechanical Performance：
Item
Resistance to
soldering heat
Solderability
Specification
1、 No
mechanical
damage
2、
△R/R≦±1
%
Surface area must
be
covered
with
new solder 95%.
1、 No mechanical
damage.
2、
△R/R≦±2%
Testing Method
Dipping into 260 ±
5 ℃
solder for 10± 1 sec.
Measuring after 1 hr recovery time.
Dipping specimen with flux into 235±
5 ℃
solder for 2± 0.5 sec.
Loading with rating current for 30 min at
room temperature , the put into –55℃
chamber within8~12 sec for 15 min.
Cycling with step1 to step4 for 5 cycles
Temperature
cycling
1、 No mechanical
damage.
2、
△R/R≦±1%
Step
1
2
3
4
Temperature
-55±
3 ℃
Room temp
155±
2 ℃
Room temp
Time
30 min
10~15 min
30 min
10~15 min
Thermal shock
Load life in
humidity
Load life
(Endurance)
The test chamber with temperature 40±
2
℃
and R.H.=90~95%, load with rater DC
Current for 1.5hr ON/0.5hr OFF repeatedly
for 1000hr.
1、 No mechanical
The test chamber with temperature 70±
2 ℃
damage.
and load with rated DC Current for 1.5hr
2、
△R/R≦±2%
ON/0.5hr OFF repeatedly for 1000hr.
Testing method is according to JIS-C 5202
1、 No mechanical
damage.
2、
△R/R≦±3%
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