Thick Film Trimmable Chip Resistors
( Lead-Free for RT12 series standard )
1. Scope :
Document No.
Issued Date
page
TRT-120S007A
2009/02/24
1/9
This specification applies for the RT12 series of thick film chip resistors made by TA-I.
2. Construction:
Over Coat (Color : Green)
Conductor
Sn Plating
Resistive Element
Ceramic Substrate
Ni Plating
3.
Type Designation:
RT
Product Code
RT : Trimmable
Chip Resistor
12
Size
Power Rating
M
Tolerance
TN
Packaging
103
Nominal
Resistance
12-1206(3216) 1/4W
K-±10%
M-±20%
N-±30%
T-Paper Tape
3 digits, e.g.,:
(E-24) 103 = 10kΩ
+N: Lead-Free
4 digits, e.g., :
(E-96) 1540 = 154Ω
43R2 = 43.2Ω
TA-I TECHNOLOGY CO., LTD
Thick Film Trimmable Chip Resistors
( Lead-Free for RT12 series standard )
Document No.
Issued Date
page
TRT-120S007A
2009/02/24
2/9
4. Dimensions :
UNIT: mm
Type
RT12
L
3.10±0.10
W
1.55±0.10
C
0.50±0.30
d
0.40±0.20
t
0.60±0.10
5. Ratings & Characteristics :
Type
Power
Max.
Max.
T.C.R
Rating Working Over- Load
(PPM/℃)
at 70℃ Voltage
Voltage
Resistance Range(Ω)
K(±10%)
M(±20%)
N(±30%)
RT12
1/4W
200V
400V
±200
10Ω-1MΩ
10Ω-1MΩ
10Ω-1MΩ
Note
: Except for the above standardized products, we also provide the customized products.
TA-I TECHNOLOGY CO., LTD
Thick Film Trimmable Chip Resistors
( Lead-Free for RT12 series standard )
5.1 Derating Curve :
Document No.
Issued Date
page
TRT-120S007A
2009/02/24
3/9
For resistors operated at ambient temperature over 70℃ , power rating shall be derated in
accordance with figure 1.
P max.
100
Power ratio ( % )
50
0
-55
50
Figure 1
70
100
125
Ambient
Temp. (
°C
)
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)
P(Rated power ):1/4W
= 15.81 (V)
;
R:102 = 1KΩ = 1000Ω
E.G. : What is RT12MTN102 the rated voltage ?
RT12MTN102
E=
0.25(W) * 1000(Ω)
TA-I TECHNOLOGY CO., LTD
Thick Film Trimmable Chip Resistors
( Lead-Free for RT12 series standard )
6.Reliability Tests: (As specified in JIS C 5202)
Test Items
Temperature Coefficient
of Resistance
Document No.
Issued Date
page
TRT-120S007A
2009/02/24
4/9
Reference
standard
JIS-C5202-5.2
Condition of Test
-55〜 +125
℃
Test Limits
△R
±200
ppm/℃
Short Time Overload
JIS-C5202-5.5
2.5 X rated voltage
for
5 sec
±(1%
+ 0.05Ω )
Intermittent Overload
JIS-C5202-5.8
3.0 X rated voltage or Max Overloading
voltage ,1sec “ON” , 25sec “OFF” , 10000 cycles
±
(5.0% + 0.1Ω)
(Remarks : 0402
2.5 X RCWV * )
1000 hours at rated voltage, 70℃ , 1.5hours
“ON “, 0.5hour “OFF”
Load Life
JIS-C5202-7.10
±(3.0%+0.1Ω)
Rapid Change of Temperature
JIS-C5202-7.4
-55℃ (30 min. ) / +155
℃(30
min. ) 5 cycles
±(1.0%+0.05Ω)
Solderability
JIS-C5202-6.11
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
(Bending)
of
Termination
JIS-C5202—6.1
3mm deflection
±(1.0%+0.05Ω)
Dielectric
Withstanding
JIS-C5202-5.7
Voltage (Voltage Proof)
Insulation Resistance
Applying voltage :
0402 & 0603 : 300V
minute .
The other 500V for a
No abnormalities such as
flashover,
burning
dielectric
breakdown shall appear.
≧1GΩ
JIS-C5202-5.6
Applying voltage 100V for 1 minute.
Resistance to Dry Heat
JIS-C5202-7.2
125±5℃ for 96±4Hrs
±(2.0%+0.1Ω)
Resistance to Solder Heat
JIS-C5202-6.10
270
±5℃
solder , 10
±1
sec dwell .
±(1.0%+0.05Ω)
Note* : RCWV : Rated continuous working voltage
.
7.
Marking
7.1
No Marking
TA-I TECHNOLOGY CO., LTD
Thick Film Trimmable Chip Resistors
( Lead-Free for RT12 series standard )
8. Taping & Reel :
8.1 Taping Dimensions
8.1.1 4 mm pitch paper:
Document No.
Issued Date
page
TRT-120S007A
2009/02/24
5/9
Packing
Paper
Type
A
B
W
F
E
P
1
P
2
P
0
D
0
+0.1
ψ1.5
-0
T
RT12
2.0±0.15
3.6±0.2
8.0±0.2
3.5±0.05
1.75±0.1
4.0±0.1
2.0±0.05
4.0±0.1
0.84±0.1
8.1.4 Packaging quantity:
UNIT: mm
Package
4 mm pitch
Type
RT
Paper Tape
2 mm pitch
178mm/R
Size
12
178mm/R
5000
TA-I TECHNOLOGY CO., LTD
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