TA-I
1. Scope :
Thick Film Chip Resistors
(Lead-Free for RM25 Series)
No
page
TRM-250S009E
1/10
This specification applies for the RM25 series of thick film chip resistors made by TA-I.
Conductor :
Over Coat (Color : Black)
(Lead-free or with lead )
2. Construction:
Sn Plating
Resistive Element
Ceramic Substrate
Ni Plating
3. Type Designation:
RM
Product Code
25
Size
J
Tolerance
EN
Packaging
103
Nominal
RM : Chip Resistor
Power Rating
Resistance
TA-I TECHNOLOGY CO., LTD
Ω
43R2 = 43.2
Ω
±
B-
±
D-
0.5%
+N: Lead-Free
4 digits, e.g.,:
(E-96) 1540 = 154
0.1%
Ω
±
F-
1%
0=0
Ω
±
25-2512(6432)
1W
G-
±
J-
5%
2%
E-Emboss Tape
3 digits, e.g.,:
(E-24) 103 = 10k
TA-I
4.
Dimensions:
Thick Film Chip Resistors
(Lead-Free for RM25 Series)
No
page
TRM-250S009E
2/10
UNIT: mm
Type
RM25
L
6.30 0.20
±
W
3.20 0.20
±
C
0.60 0.30
±
d
0.50 0.25
±
t
0.60 0.10
±
5. Ratings & Characteristics :
Type
Power
Rating
at 70
Rated
Voltage
Max.
Working
Voltage
T.C.R
(PPM/
Ω
RM25
1W
Refer 5.2
200V
400V
Type
RM25
Rated Current
2A
℃
〜 ℃
Note : Except for the above standardized products, we also provide the
customized products.
℃
2. Operating Temp(
): : -55
+125
TA-I TECHNOLOGY CO., LTD
Ω
Ω
O
THICK FILM CHIP RESISTORS
Max Overload Current
5A
Resistance Range
50m
MAX
Ω ≦＜
Ω
Ω
Ω
Ω
400
1
-9.1
1
-9.1
10M R 20M
Ω
Ω
1
-9.1
Ω
Ω
Ω
Ω
Ω ≦＜
200
1M R 10M
Ω
Ω
Ω
Ω
Ω
Ω
100
10
-560k
10
-1M
10
-1M
10
-10M
10
-10M
±
±
±
±
±
℃
Max.
Over-
Load
Voltage
Resistance Range(
)
B( 0.1%)
E-96
D( 0.5%)
E-96
F( 1%)
E-96
)
J( 5%)
E-24
G( 2%)
E-24
±
±
±
℃
TA-I
5.1Derating Curve :
Thick Film Chip Resistors
(Lead-Free for RM25 Series)
No
page
TRM-250S009E
3/10
accordance with figure 1.
P max.
100
Power ratio ( % )
50
0
-55
50
70
100
125
Ambient
Figure 1
5.2 Rated Voltage:
The rated voltage is calculated by the following formula:
E=
P*R
E=
Rated Voltage(V)
P=
Rated Power(W)
R=
Resistance Value
(Ω)
E.G. : What is RM25JTN102 the rated voltage ?
Ω
Ω
RM25JTN102
P:1.0W
;
R:102 = 1K
= 1000
Ω
E=
1.0(W) * 1000(
)
= 31.6 (V)
TA-I TECHNOLOGY CO., LTD
℃
For resistors operated at ambient temperature over 70
, power rating shall be derated in
Temp. (
°
C )
TA-I
Thick Film Chip Resistors
(Lead-Free for RM25 Series)
No
page
TRM-250S009E
4/10
6. Reliability Tests: (As specified in JIS C 5202)
Test Items
Temperature
Resistance
Coefficient
of
Reference
standard
〜
Condition of Test
℃
Test Limits
Refer 5.0
JIS-C5202-5.2
-55
+125
Short Time Overload
JIS-C5202-5.5
2.5 X rated voltage
for
5 sec
Intermittent Overload
JIS-C5202-5.8
Load Life
JIS-C5202-7.10
Load Life with Humidity
JIS-C5202-7.9
JIS-C5202-6.11
JIS-C5202—6.1 3mm deflection
Dielectric
Withstanding
JIS-C5202-5.7
Voltage (Voltage Proof)
Insulation Resistance
JIS-C5202-5.6
Applying voltage :
500V for a minute .
Applying voltage 100V for 1 minute.
No abnormalities such as
flashover,
burning
dielectric
breakdown shall appear.
Ω
1G
TA-I TECHNOLOGY CO., LTD
Ω
Ω
±
℃ ±
Resistance to Solder Heat
JIS-C5202-6.10
270
5
solder , 10
1 sec dwell .
0 :
50m
or less
Ω
Ω
Ω
±
±
Ω
±
℃ ±
Resistance to Dry Heat
JIS-C5202-7.2
125 5
for 96 4Hrs
0 : 50m
or less
0.5%,1%: (0.5%+0.05 )
2%, 5%: (1.0%+0.05 )
Ω
0.5%,1% : (1.0%+0.05
2%,5% : (2.0%+0.1 )
Ω
±
±
Ω
0 :
50m
±
Robustness
(Bending)
of
Termination
or less
Ω
Ω
±
Ω
≧
±
℃ ±
Solderability
245 5
solder, 2 0.5 sec dwell.
Solder : Sn96.5 / Ag3.0 / Cu0.5
At least 95% of surface area
of electrode shall be covered
with new solder.
0.5%,1%: (0.5%+0.05 )
2%,5%: (1.0%+0.05 )
Ω
Ω
℃
℃
Rapid Change of Temperature
JIS-C5202-7.4
-55
(30 min. ) / +155
(30 min. ) 5 cycles
0.5%,1% : (0.5%+0.05 )
2%, 5% : (1.0%+0.05 )
0
:
50m
or less
Ω
Ω
±
±
Ω
Ω
1000 hours at rated voltage , 40 2 ,
90~95% RH 1.5hours “ON “, 0.5hour “OFF”
℃ ±
0.5%,1%: (1.0%+0.05 )
2%, 5%: (3.0%+0.1 )
0
: 100m
or less
Without mechanical damage
Ω
Ω
±
±
Ω
Ω
0
:
100m
or less
Ω
±
℃
1000 hours at rated voltage, 70
“ON “, 0.5hour “OFF”
, 1.5hours
Ω
0.5%,1%: (1.0%+0.05
2%,5%: (3.0%+0.1 )
±
Ω
Ω
3.0 X rated voltage or Max Overloading
voltage ,1sec “ON” , 25sec “OFF” , 10000 cycles
0
:
50m
Ω
(5.0% + 0.1
)
or less
s
Ω
Ω
0
: 50m
Ω
(1% + 0.05
)
±
±
or les
)
)
TA-I
Thick Film Chip Resistors
(Lead-Free for RM25 Series)
No
page
TRM-250S009E
5/10
Component , Lead-Free Soldering part 8 :
Solder Heat Resistance Test for SMD. Lead-
Free Soldering “
Temp. Cycles :
5
/ 125
5
, Keep 7 min
-35
Testing duration : 500 4 hours
Temp. Humidity Chambers:
Temperature : 85
Humidity : 85% RH
Testing duration : 500 4 hours
±
℃
±
℃
±
℃
±
Whisker
SONY
SS-00254-8
Whisker formation :
50 um or less .
.
Component , Lead-Free Soldering part 5 :
Solder Heat Resistance Test for SMD. Lead-
Free Soldering “
Flow Solder :
Pre – heat : 100 to 105
30 5 sec
Temperature : 260 3
10 +1/ -0 sec
The entire sample shall be dipped in solder.
The specimen shall be stored at standard
atmospheric conditions for 1 hour .
Iron Solder :
Bit temperature : 350 10
Application time of soldering iron : 3 +1/- 0sec
Apply the soldering iron to the electrode .
The specimen shall be stored at standard
atmospheric conditions for 1 hour , after
which the measurements shall be made
±
℃
℃ ±
Resistance to Solder Heat
SONY
SS-00254-5
Electrical characteristics shall be
Satisfied .
Without distinct deformation in
appearance
Note* : RCWV : Rated continuous working voltage
.
7. Marking :
7.1
±
2% &
±
5%(E24)
Resistance value is expressed by 3 digits, the first two digits represent the significant figures of
Ω
nominal resistance value in
×
, and the third digit represents exponent for base of 10.
Ω
7.2
±
1% (E96 )
, and the fourth digit represents exponent for base of 10.
=
4.7K
Ω
Resistance value is expressed by 4 digits or 3digits , the first three digits represent the significant
figures of nominal resistance value in
×
7.3
±
1%( E96/3digital )
The resistance value by 3 digits is requirement for customer.
Ω
E.G. :
4701 = 470 10
1
=
4700
Ω
E.G. :,
472
= 47 10
2
= 4700
= 4.7K
TA-I TECHNOLOGY CO., LTD
℃
±
