Thick Film High Power Chip Resistors
(RMH series standard Halogen-Free)
Document No. TRMH-XX0S001M
Revise Date
page number
2020/09/24
1/13
1. Scope :
This specification applies for the thick film high power chip resistors made by TA-I.
2. Construction :
Over Coat (Color : Black)
Conductor
Sn Plating
Resistive Element
Ceramic Substrate
Ni Plating
3.Type Designation :
RMH
Product Code
RMH :
High Power
Chip Resistor
10
Size
Power Rating
J
Tolerance
T
Packaging
103
Nominal
Resistance
04-0402(1005) 1/8W
06-0603(1608) 1/5W
10-0805(2012) 1/4W
12-1206(3216) 1/2W
20-2010(5025) 1W
25-2512(6432) 2W
J-±5%
F-±1%
D-±0.5%
T- Paper Tape
E- Emboss Tape
3 digits, e.g.,:
(E-24) 103 = 10kΩ
4 digits, e.g., :
(E-96) 1540 = 154Ω
43R2 = 43.2Ω
TA-I TECHNOLOGY CO., LTD
Thick Film High Power Chip Resistors
(RMH series standard Halogen-Free)
4. Dimensions :
Document No. TRMH-XX0S001M
Revise Date
page number
2020/09/24
2/13
102
UNIT: mm
Type
RMH04
RMH06
RMH10
RMH12
RMH20
RMH25
1.00
L
+0.10
W
0.50±0.05
C
0.20±0.10
d
0.25±0.10
+0.2
t
0.32±0.05
-0.05
1.60±0.10
0.80±0.10
0.30±0.20
0.30
-0.1
2.00±0.10
1.25±0.10
0.40±0.20
0.40±0.20
0.50±0.10
0.45±0.10
3.10±0.10
1.55±0.10
0.50±0.30
0.40±0.20
0.55±0.10
5.00±0.15
2.50±0.15
0.60±0.30
0.50±0.25
0.60±0.10
6.30±0.20
3.20±0.20
0.60±0.30
0.50±0.25
0.60±0.10
TA-I TECHNOLOGY CO., LTD
Thick Film High Power Chip Resistors
(RMH series standard Halogen-Free)
Document No. TRMH-XX0S001M
Revise Date
page number
2020/09/24
3/13
5. Ratings & Characteristics :
Type
Power
Rating
at 70℃
Max.
Rating
Working
Voltage
Voltage
Max.
Over-
Load
Voltage
T.C.R
(PPM/
℃
)
±100
RMH04
1/8W
Refer
5.2
50V
100V
±200
+500
-200
±100
50V
100V
±200
±400
±100
150V
300V
±200
±400
±100
200V
400V
±200
±400
±100
RMH20
1W
Refer
5.2
200V
400V
±200
±400
±100
RMH25
2W
Refer
5.2
200V
400V
±200
±400
Operating Temp(℃):
-55℃
½
+155℃
1Ω≦R<10Ω
10Ω~1MΩ
1Ω≦R<10Ω
10Ω-1MΩ
10Ω-1MΩ
1Ω≦R<10Ω
10Ω~1MΩ
1Ω≦R<10Ω
10Ω-1MΩ
10Ω-1MΩ
1Ω≦R<10Ω
10Ω~1MΩ
1Ω≦R<10Ω
10Ω-1MΩ
10Ω-1MΩ
1Ω≦R<10Ω
10Ω~1MΩ
1Ω≦R<10Ω
10Ω-1MΩ
10Ω-1MΩ
1Ω≦R<10Ω
Resistance Range(Ω)
D(±0.5%)
E-96&E-24
100Ω~1MΩ
10Ω≦R<100Ω
F(±1%)
E-96&E-24
100Ω~1MΩ
10Ω≦R<100Ω
1Ω≦R<10Ω
10Ω~1MΩ
10Ω-1MΩ
10Ω-1MΩ
1Ω≦R<10Ω
10Ω-1MΩ
1Ω≦R<10Ω
J(±5%)
E-24
RMH06
1/5W
Refer
5.2
RMH10
1/4W
Refer
5.2
RMH12
1/2W
Refer
5.2
Note
: Except for the above standardized products, we also provide the customized products.
TA-I TECHNOLOGY CO., LTD
Thick Film High Power Chip Resistors
(RMH series standard Halogen-Free)
5.1 Derating Curve :
Document No. TRMH-XX0S001M
Revise Date
page number
2020/09/24
4/13
For resistors operated at ambient temperature over 70℃ , power rating shall be derated in
accordance with figure 1.
P Max
Power ratio(%)
Ambient Temp.(℃)
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 RMH06JT102 the rated voltage ?
RMH06JT102
E=
P:1/5W
;
R:102 = 1KΩ = 1000Ω
= 14.14 (V)
0.2(W) * 1000(Ω)
TA-I TECHNOLOGY CO., LTD
Thick Film High Power Chip Resistors
(RMH series standard Halogen-Free)
6. Reliability Tests :
Test Items
Temperature Coefficient
of Resistance
Document No. TRMH-XX0S001M
Revise Date
page number
2020/09/24
5/13
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
0402:±(2% + 0.1Ω )
±(1%
+ 0.05Ω )
Intermittent Overload
EC60115-1-4.39
JIS-C5201-1-4.39
2.5X rated voltage or Max Overloading
voltage ,1sec “ON” , 25sec “OFF” , 10000
cycles
±
(5.0% + 0.1Ω)
Endurance (Load Life)
IEC60115-1-4.25.1
JIS-C5201-1-4.25.1
0402:
±(3.0%+0.1Ω)
1000 hours at rated voltage, 70℃ , 1.5hours
0.5%,1%:±(1.0%+0.05Ω)
“ON “, 0.5hour “OFF”
5%:±(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”
0402:
±(3.0%+0.1Ω)
0.5%,1%:±(1.0%+0.05Ω)
5%:±(3.0%+0.1Ω)
Rapid Change
of Temperature
IEC60115-1-4.19
JIS-C5201-1-4.19
-55℃ (30 min. ) / +155
℃(30
min. ) 5 cycles
0.5%,1%:±(0.5%+0.05Ω)
5%:±(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.
0.5%,1%:±(0.5%+0.05Ω)
5%:±(1.0%+0.05Ω)
Robustness of Termination
(Bending)
IEC60115-1-4.33
JIS-C5201-1-4.33
3mm deflection
2mm deflection (RMH20,25)
Dielectric Withstanding
Voltage (Voltage Proof)
IEC60115-1-4.7
JIS-C5201-1-4.7
Applying voltage :
0402 & 0603 : 300V
minute .
The other 500V for a
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
JIS-C5201-1-4.23.2
155±5℃ for 96±4Hrs
0.5%,1%:±(1.0%+0.05Ω)
5%:±(2.0%+0.1Ω)
Resistance to Solder Heat
IEC60115-1-4.18
JIS-C5201-1-4.18
270
±5℃
solder , 10
±1
sec dwell .
0.5%,1%:±(0.5%+0.05Ω)
5%:±(1.0%+0.05Ω)
Note* : RCWV : Rated continuous working voltage
.
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