Anti-Surge Chip Resistors
( Lead-Free for RAS series standard )
Document No.
TRAS-XX0S001E
Revise Date
page number
2018/06/22
1/11
Halogen-Free
1. Scope：
This specification applies for the RAS series of Anti-Surge chip resistors made by TA-I.
2. Construction：
Over Coat (Color : Black)
Conductor
Sn Plating
Resistive Element
Ceramic Substrate
Ni Plating
3. Type Designation：
RAS
Product Code
RAS : Anti-Surge
Chip Resistor
10
Size
Power Rating
J
Tolerance
Resistance
TN
Packaging
100
Nominal
10-0805(2012) 1/4W
12-1206(3216) 1/2W
20-2010(5025) 1W
F-±1%
J-±5%
k-±10%
T-Paper Tape
E-Embossed Tape
3 digits, e.g.,:
(E-24) 100 = 10Ω
4 digits, e.g., :
(E-96) 1000 = 100Ω
+N：Lead-Free
TA-I TECHNOLOGY CO., LTD
Anti-Surge Chip Resistors
( Lead-Free for RAS series standard )
Document No.
TRAS-XX0S001E
Revise Date
page number
2018/06/22
2/11
Halogen-Free
4. Dimensions：
UNIT: mm
Type
RAS10
RAS12
RAS20
L
2.00±0.10
3.10±0.10
5.00±0.15
W
1.25±0.10
1.55±0.10
2.50±0.15
C
0.40±0.20
0.50±0.30
0.60±0.30
d
0.40±0.20
0.40±0.20
0.50±0.25
t
0.50±0.10
0.55±0.10
0.60±0.10
5. Ratings & Characteristics：
Type
Power
Rating
at 70℃
Rating
Voltage
Max.
Working
Voltage
Max.
Over-
T.C.R
Load (PPM/
℃
)
Voltage
300V
±100
Resistance Range(Ω)
F(±1%)
E-96
1Ω-100KΩ
J(±5%)
E-24
1Ω-100KΩ
k(±10%)
E-24
1Ω-100KΩ
RAS10
1/4W
Refer
5.2
Refer
5.2
Refer
5.2
150V
RAS12
1/2W
200V
400V
±100
1Ω-100KΩ
1Ω-100KΩ
1Ω-100KΩ
RAS20
1W
200V
400V
±100
1Ω-100KΩ
1Ω-100KΩ
1Ω-100KΩ
Operating Temp (℃)： -55℃
½
+155℃
Note： Except for the above standardized products, we also provide the customized products.
TA-I TECHNOLOGY CO., LTD
Anti-Surge Chip Resistors
( Lead-Free for RAS series standard )
Document No.
TRAS-XX0S001E
Revise Date
page number
2018/06/22
3/11
Halogen-Free
5.1. Derating Curve：
For resistors operated at ambient temperature over 70
℃
, power rating shall be
derated in accordance with figure 1.
P max.
Power ratio (%)
Ambient Temp. (
°C
)
Figure 1
5.2. 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 RAS10JTN101 the rated voltage ?
RAS10JTN101
E=
P:1/4W
;
R:101 = 100Ω
0.25(W) * 100(Ω)
= 5(V)
TA-I TECHNOLOGY CO., LTD
Anti-Surge Chip Resistors
( Lead-Free for RAS series standard )
Document No.
TRAS-XX0S001E
Revise Date
page number
2018/06/22
4/11
Halogen-Free
5.3. Single Pulse Limiting Power Curve：
6. Reliability Tests :
Test Items
Temperature Coefficient
of Resistance
Reference
standard
IEC60115-1-4.8
JIS-C5201-1-4.8
Condition of Test
-55½ +125
℃
Test Limits
△R
Refer 5.0
Short Time Overload
IEC60115-1-4.13
JIS-C5201-1-4.13
2.5 X rated voltage
for
5 sec
±(1.0%
+ 0.05Ω)
Intermittent Overload
EC60115-1-4.39
JIS-C5201-1-4.39
2.5X rated voltage or Max Overloading
±(5.0%
+ 0.1Ω)
voltage ,1sec “ON” , 25sec “OFF” ,10000 cycles
Endurance (Load Life)
IEC60115-1-4.25.1 1000 hours at rated voltage, 70℃ , 1.5hours
JIS-C5201-1-4.25.1 “ON “, 0.5hour “OFF”
±(3.0%+0.1Ω)
Load Life with Humidity
IEC60115-1-4.24
JIS-C5201-1-4.24
1000 hours at rated voltage , 40±2℃,
90~95% RH 1.5hours “ON “, 0.5hour “OFF”
±(3.0%+0.1Ω)
TA-I TECHNOLOGY CO., LTD
Anti-Surge Chip Resistors
( Lead-Free for RAS series standard )
Document No.
TRAS-XX0S001E
Revise Date
page number
2018/06/22
5/11
Halogen-Free
Rapid Change
of Temperature
IEC60115-1-4.19
JIS-C5201-1-4.19
-55℃ (30 min. ) / +155
℃(30
min. ) 5 cycles
±(1.0%+0.05Ω)
Solderability
IEC60115-1-4.17
JIS-C5201-1-4.17
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.
Robustness of Termination
(Bending)
IEC60115-1-4.33
JIS-C5201-1-4.33
3mm deflection
±(1.0%+0.05Ω)
Dielectric Withstanding
Voltage (Voltage Proof)
IEC60115-1-4.7
JIS-C5201-1-4.7
Applying voltage :
The 500V for a minute .
No abnormalities such as
flashover,
burning
dielectric
breakdown shall appear.
Insulation Resistance
IEC60115-1-4.6
JIS-C5201-1-4.6
Applying voltage 100V for 1 minute.
≧1GΩ
Resistance to Dry Heat
IEC60115-1-4.23.2
155±5℃ for 96±4Hrs
JIS-C5201-1-4.23.2
±(2.0%+0.1Ω)
Resistance to Solder Heat
IEC60115-1-4.18
JIS-C5201-1-4.18
270
±5℃
solder , 10
±1
sec dwell .
±(1.0%+0.05Ω)
Note* : RCWV : Rated continuous working voltage
.
7. Marking
7.1
±5%
,
±10%(E24)
:
Resistance value is expressed by 3 digits, the first two digits represent the significant figures of
nominal resistance value inΩ, and the third digit represents exponent for base of 10.
E.G. :, 100 = 10×10
0
= 10Ω
100
7.2
±1%
(E96 ) :
Resistance value is expressed by 4 digits , the first three digits represent the significant
figures of nominal resistance value inΩ, and the fourth digit represents exponent for base of 10.
E.G. :
1000 = 100×10
0
= 100Ω
1000
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