Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
Thick Film Chip Resistors / Low Resistance Type
E
1
R
2
J
3
2
4
B
5 6
W
7
G
8
R
9
0
10
4
11
7
12
X
Thick Film
Chip Resistors
Product Code
Resistance Tolerance
Code
D
F
G
J
Tolerance
± 0.5 %✽
± 1 %
± 2 %
± 5 %
Shown by 4 digits or letters.
(Ex.) R047 : 0.047 Ω=47m Ω
Resistance Value Packaging Methods
Code Packaging Part No.
X
Pressed Carrier Taping
2 mm pitch, 10,000 pcs.
ERJ3LW
ERJ6LW
ERJ3BW
ERJ6BW
ERJ8BW
ERJ6CW
ERJ8CW
ERJ2LW
ERJ2BW
V
Punched Carrier Taping
4 mm pitch, 5,000 pcs.
Code Inch
2LW
3LW
6LW
2BW
3BW
6BW
8BW
6CW
8CW
0402
0603
0805
0402
0603
0805
1206
0805
1206
0.2 W
0.25 W
0.5 W
0.25 W
0.33 W
0.5 W
1 W
0.5 W
1 W
Power Rating
Resistance Value
10m Ω
5m Ω,10m Ω
5, 6, 7, 8, 9m Ω
47m Ω to 100m Ω
20m Ω to 100m Ω
10m Ω to 100m Ω
10m Ω to 100m Ω
10m Ω to 30m Ω
10m Ω to 50m Ω
✽ Please refer to the rating table
for the resistance tolerance
Explanation of Part Numbers
■ As for Packaging Methods, Land Pattern, Soldering Conditions and Safety Precautions,
Please see Data Files
Thick Film Chip Resistors / Low Resistance Type
Type: ERJ 2LW, 3LW, 6LW
2BW, 3BW, 6BW,
8BW, 6CW, 8CW
ERJ 2B, 3B, 6D, 6B, 8B,
14B, 3R, 6R, 8R, 14R,
12R, 12Z, 1TR
ERJ L03, L06, L08, L14,
L12, L1D, L1W
● Current Sensing resistor
● Small size and lightweight
● Realize both low-resistance & High-precision by original thick fi lm resistive element & special electrode structure
● Suitable for both refl ow and fl ow sol der ing
● Realize High-power by double-sided resistive elements structure that aimed
to suppress temperature rising : ERJ2LW, 3LW, 6LW, 2BW, 3BW, 6BW, 8BW, 6CW, 8CW
● Low TCR : ±75×10–6/°C (ERJ6CW, 8CW)
● Low Resistance Value : Thick fi lm resistors available from 5m Ω (ERJ3LW, 6LW)
● Reference Standards : IEC 60115-8, JIS C 5201-8, JEITA RC-2144
● AEC-Q200 qualifi ed
● RoHS compliant
Features
● ERJ2LW, 3LW, 6LW, 2BW, 3BW, 6BW, 8BW, 6CW, 8CW
<High power (double-sided resistive elements structure) type>
Feb. 201815
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
Thick Film Chip Resistors / Low Resistance Type
E
1
R
2
J
3
L
4
1
5
4
6
K
7
J
8
5
9
0
10
M
11
U
12
Thick Film
Chip Resistors
Product Code Size, Power Rating
Type Inch
0.2 W
0.25 W
0.33 W
0.33 W
0.5 W
0.5 W
1 W
Power R.
Code
K
U
Resistance Tolerance
Code
F
J
Tolerance
± 1 %
± 5 %
Shown by 3 digits or letters.
(Ex.) 50M:50m Ω, 10 C:100m Ω
Resistance Value
Packaging Methods
Code
V
U
Packaging Part No.
Punched Carrier Taping
4 mm pitch, 5,000 pcs.
Embossed Carrier Taping
4 mm pitch, 5,000 pcs.
Embossed Carrier Taping
4 mm pitch, 3,000 pcs.
ERJL03
ERJL06
ERJL08
ERJL14
ERJL12
ERJL1D
ERJL1W
Std.
20m Ω to 100m Ω
Res. Value
L03
L06
L08
L14
L12
L1D
L1W
20m Ω, 22m Ω, 33m Ω,
39m Ω, 47m Ω, 50m Ω,
100m Ω
✽
✽
✽ L03, L06, L08 : 47m Ω to 100m Ω
L1D, L1W : 40m Ω to 100m Ω
0603
0805
1206
1210
1812
2010
2512
E
1
R
2
J
3
8
4
R
5 6
Q
7
F
8
R
9
2
10
2
11
V
Thick Film
Chip Resistors
Product Code Size, Power Rating
Type
0.166 W
0.25 W
0.1 W
0.5 W
0.33 W
0.125 W
0.5 W
0.25 W
0.5 W
0.25 W
0.5 W
0.5 W
1 W
Power R.
Resistance Value
Code
S
Q
0.1 Ω to 0.2 Ω
0.22 Ω to 9.1 Ω✽
Resistance Tolerance
Code
D
F
G
J
Tolerance
± 0.5 %✽
± 1 %
± 2 %
± 5 %
Shown by 3 digits or letters.
Only when it is D (E24,E96)
or F (E96), shown by
4 digits or letters.
(Ex.) R22 : 0.22 Ω
R102 : 0.102 Ω
Resistance Value
Packaging Methods
Code Packaging Part No.
Punched Carrier Taping
4 mm pitch, 5,000 pcs.
Embossed Carrier Taping
4 mm pitch, 5,000 pcs.
2B
3B
3R
6D
6B
6R
8B
8R
14B
14R
12R
12Z
1TR
Res. Value
V
X
U
Punched Carrier Taping
2 mm pitch, 10,000 pcs.
Embossed Carrier Taping
4 mm pitch, 4,000 pcs.
ERJ2B
ERJ3B/3R
ERJ6D/6B/6R
ERJ8B/8R
ERJ14B/14R
ERJ12R
ERJ12Z
ERJ1TR
✽ 2B : 0.22 Ω to 1.0 Ω
Inch
0402
0603
0603
0805
0805
0805
1206
1206
1210
1210
1812
2010
2512
✽ Please refer to the
rating table for the
resistance tolerance
● ERJL03, L06, L08, L14, L12, L1D, L1W <Low TCR type>
<High power (double-sided resistive elements structure) type>
(1) Please contact us when resistors of irregular series are needed.
(2) Use it on the condition that the case temperature is below the upper category temperature.
·
Rated Continuous Working Voltage (RCWV) shall be determined from RCWV =  Power Rating × Resistance Values.
· Overload Test Voltage (OTV) shall be determined from OTV = Specified Magnification (refer to performance) × RCWV.
Part No.
(inch size)
Power Rating
(2)
at 70 °C
(W)
Resistance
Tolerance
(%)
Resistance (1)
Range
(Ω)
T.C.R.
(×10–6/°C)
Category
Temperature Range
(°C)
AEC-Q200
Grade
ERJ2LW (0402) 0.2 ±1, ±2, ±5 10m 0 to 500 –55 to +125 Grade 1
ERJ3LW (0603) 0.25 ±1, ±2, ±5 5m 0 to 700 –55 to +125 Grade 1
10m 0 to 300 –55 to +125
ERJ6LW (0805) 0.5 ±1, ±2, ±5 5, 6, 7, 8, 9m 0 to 300 –55 to +125 Grade 1
ERJ2BW (0402) 0.25 ±1, ±2, ±5 47m to 100m (E24) ±300 –55 to +155 Grade 0
ERJ3BW (0603) 0.33 ±1, ±2, ±5 20m to 100m (E24)
20m Ω ≤ R < 39m Ω : ±250
39m Ω ≤ R ≤ 100m Ω : ±150
–55 to +155 Grade 0
ERJ6BW (0805) 0.5 ±1, ±2, ±5 10m to 100m (E24)
10m Ω ≤ R < 15m Ω : ±300
15m Ω ≤ R ≤ 100m Ω : ±200
–55 to +155 Grade 0
ERJ8BW (1206) 1 ±1, ±2, ±5 10m to 100m (E24)
10m Ω ≤ R < 20m Ω : ±200
20m Ω ≤ R < 47m Ω : ±150
47m Ω ≤ R ≤ 100m Ω : ±100
–55 to +155 Grade 0
ERJ6CW (0805) 0.5
±0.5, ±1, ±2, ±5
10m to 30m (E24) ±75 –55 to +125 Grade 1
ERJ8CW (1206) 1 ±1, ±2, ±5 10m to 50m (E24) ±75 –55 to +125 Grade 1
● ERJ2BS/2BQ, 3BS/3BQ, 6BS/6BQ, 8BS/8BQ, 14BS/14BQ, 6D, 3R, 6R, 8R, 14R, 12R, 12Z, 1TR
<High power type/Standard type>
Ratings
√
Feb. 201815
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
Thick Film Chip Resistors / Low Resistance Type
Part No.
(inch size)
Power Rating
(2)
at 70 °C
(W)
Resistance
Tolerance
(%)
Resistance (1)
Range
(Ω)
T.C.R.
(×10–6/°C)
Category
Temperature Range
(°C)
AEC-Q200
Grade
ERJ3RS (0603)
0.1 ±1, ±2, ±5
0.10 to 0.20 (E24) ±300 –55 to +155 Grade 0
ERJ3RQ (0603) 0.22 to 0.91 (E24)
1.0 to 9.1 (E24) ±200
ERJ6RS (0805)
0.125 ±1, ±2, ±5
0.10 to 0.20 (E24) ±250 –55 to +155 Grade 0
ERJ6RQ (0805) 0.22 to 0.91 (E24)
1.0 to 9.1 (E24) ±200
ERJ8RS (1206)
0.25 ±1, ±2, ±5
0.10 to 0.20 (E24) ±250 –55 to +155 Grade 0
ERJ8RQ (1206) 0.22 to 0.91 (E24)
1.0 to 9.1 (E24) ±200
ERJ14RS (1210)
0.25 ±1, ±2, ±5
0.10 to 0.20 (E24) ±200 –55 to +155 Grade 0
ERJ14RQ (1210) 0.22 to 0.91 (E24)
1.0 to 9.1 (E24) ±100
ERJ12RS (1812)
0.5 ±1, ±2, ±5
0.10 to 0.20 (E24) ±200 –55 to +155 Grade 0
ERJ12RQ (1812) 0.22 to 0.91 (E24)
1.0 to 9.1 (E24) ±100
ERJ12ZS (2010)
0.5 ±1, ±2, ±5
0.10 to 0.20 (E24) ±200 –55 to +155 Grade 0
ERJ12ZQ (2010) 0.22 to 0.91 (E24)
1.0 to 9.1 (E24) ±100
ERJ1TRS (2512)
1 ±1, ±2, ±5
0.10 to 0.20 (E24) ±200 –55 to +155 Grade 0
ERJ1TRQ (2512) 0.22 to 0.91 (E24)
1.0 to 9.1 (E24) ±100
<Standard type>
(1) Please contact us when resistors of irregular series are needed.
(2) Use it on the condition that the case temperature is below the upper category temperature.
(3) E96 series also have ±0.5 %, ±1 % line-up.
·
Rated Continuous Working Voltage (RCWV) shall be determined from RCWV =  Power Rating × Resistance Values.
· Overload Test Voltage (OTV) shall be determined from OTV = Specified Magnification (refer to performance) × RCWV.
(1) Please contact us when resistors of irregular series are needed.
(2) Use it on the condition that the case temperature is below the upper category temperature.
·
Rated Continuous Working Voltage (RCWV) shall be determined from RCWV =  Power Rating × Resistance Values.
· Overload Test Voltage (OTV) shall be determined from OTV = Specified Magnification (refer to performance) × RCWV.
<High power type>
Ratings
Part No.
(inch size)
Power Rating
(2)
at 70 °C
(W)
Resistance (3)
Tolerance
(%)
Resistance (1)
Range
(Ω)
T.C.R.
(×10–6/°C)
Category
Temperature Range
(°C)
AEC-Q200
Grade
ERJ2BS (0402) 0.166 ±1, ±2, ±5
0.10 to 0.20 (E24)
±300 –55 to +155 Grade 0
ERJ2BQ (0402)
0.22 to 1.0 (E24)
±250
ERJ3BS (0603)
0.25 ±1, ±2, ±5
0.10 to 0.20 (E24)
±300 –55 to +155 Grade 0
ERJ3BQ (0603)
0.22 to 0.91 (E24)
1.0 to 9.1 (E24)
±200
ERJ6DS (0805) 0.5 ±0.5, ±1,
±2, ±5
0.10 to 0.20 (E24, E96)
±150 –55 to +155 Grade 0
ERJ6DQ (0805)
0.22 to 9.1 (E24, E96)
±100
ERJ6BS (0805)
0.33 ±1, ±2, ±5
0.10 to 0.20 (E24)
±250 –55 to +155 Grade 0
ERJ6BQ (0805)
0.22 to 0.91 (E24)
1.0 to 9.1 (E24)
±200
ERJ8BS (1206)
0.5 ±1, ±2, ±5
0.10 to 0.20 (E24)
±250 –55 to +155 Grade 0
ERJ8BQ (1206)
0.22 to 0.91 (E24)
1.0 to 9.1 (E24)
±200
ERJ14BS (1210)
0.5 ±1, ±2, ±5
0.10 to 0.20 (E24)
±200 –55 to +155 Grade 0
ERJ14BQ (1210)
0.22 to 0.91 (E24)
1.0 to 9.1 (E24)
±100
√
√
Feb. 201815
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
Thick Film Chip Resistors / Low Resistance Type
–40 –20 0 20 40 60 80 100 120 140 160
0
180–60
155 °C
70 °C
Ambient Temperature (°C)
20
40
60
80
100
Rated Load (%)
–55 °C
125 °C
Protective coating
Alumina
substrate
Electrode (Inner)
Electrode
(Between)
Electrode (Outer)
Thick film
resistive element
a
b
t
W
L
Power Derating Curve
For resistors operated in ambient temperatures above
70 °C, power rating shall be derated in accordance
with the figure below.
Dimensions in mm (not to scale)
Construction
Part No.
(inch size)
Power Rating
(2)
at 70 °C
(W)
Resistance
Tolerance
(%)
Resistance (1)
Range
(Ω)
T.C.R.
(×10–6/°C)
Category
Temperature Range
(°C)
AEC-Q200
Grade
ERJL03 (0603) 0.2 ±1, ±5 47m to 100m ±200 –55 to +125 Grade 1
ERJL06 (0805) 0.25 ±1, ±5 47m to 100m ±100 –55 to +125 Grade 1
ERJL08 (1206) 0.33 ±1, ±5 47m to 100m ±100 –55 to +125 Grade 1
ERJL14 (1210) 0.33 ±1, ±5 20m to 100m
R < 47m Ω : ±300
R ≥ 47m Ω : ±100
–55 to +125 Grade 1
ERJL12 (1812) 0.5 ±1, ±5 20m to 100m –55 to +125 Grade 1
ERJL1D (2010) 0.5 ±1, ±5 40m to 100m –55 to +125 Grade 1
ERJL1W (2512) 1 ±1, ±5 40m to 100m –55 to +125 Grade 1
<Low TCR type>
(1)
Standard R.V. : 20m Ω, 22m Ω, 33m Ω, 39m Ω, 47m Ω, 50m Ω, 100m Ω, Custom R.V. : Each 1m Ω within upper range.
(2) Use it on the condition that the case temperature is below the upper category temperature.
∙
Rated Continuous Working Voltage (RCWV) shall be determined from RCWV =  Power Rating × Resistance Values.
· Overload Test Voltage (OTV) shall be determined from OTV = Specified Magnification (refer to performance) × RCWV.
√
Part No. Dimensions (mm)
Mass(Weight)
[g/1000 pcs.]
LWa b t
ERJ2LW 1.00±0.10 0.50+0.10 0.25±0.10 0.25±0.10 0.40±0.05 0.8
ERJ2BW 1.00±0.10 0.50+0.10 0.24±0.10 0.24±0.10 0.35±0.05 0.8
ERJ2BS 1.00±0.10 0.50+0.10 0.20±0.10 0.27±0.10 0.35±0.05 0.8
ERJ2BQ
ERJ3LW
(5m Ω)1.60±0.15 0.80±0.15 0.50±0.20 0.50±0.20 0.55±0.10 3
ERJ3LW
(10m Ω)
ERJ3BW
1.60±0.15 0.80±0.15 0.40±0.20 0.40±0.20 0.55±0.10 3
ERJ3R
1.60±0.15 0.80+0.15 0.30±0.20 0.30±0.15 0.45±0.10 2ERJ3B
ERJL03
ERJ6LW 2.00±0.20 1.25±0.20 0.63±0.20 0.63±0.20 0.70±0.10 6
ERJ6BW 2.00±0.20 1.25±0.20 0.55±0.20 0.55±0.20 0.65±0.10 6
ERJ6CW
(10 to 13m Ω)
2.05±0.20 1.30±0.20
0.60±0.20 0.60±0.20
0.65±0.10 6
ERJ6CW
(15 to 30m Ω)
0.45±0.20 0.45±0.20
ERJ6D 2.00±0.20 1.25±0.10 0.40±0.20 0.55±0.25 0.60±0.10 5
ERJ6R
2.00±0.20 1.25±0.10 0.40±0.20 0.40±0.20 0.60±0.10 5ERJ6B
ERJL06
–0.05
–0.05
–0.05
–0.05
Part No. Dimensions (mm)
Mass(Weight)
[g/1000 pcs.]
LWa b t
ERJ8BW 3.20±0.20 1.60±0.20 1.00±0.20 1.00±0.20 0.65±0.10 13
ERJ8CW
(10 to 16m Ω)
3.20±0.20 1.60±0.20 1.10±0.20 1.10±0.20 0.65±0.10 13
ERJ8CW
(18 to 50m Ω)
3.20±0.20 1.60±0.20 0.60±0.20 0.60±0.20 0.65±0.10 13
ERJ8R
3.20+0.05 1.60+0.05 0.50±0.20 0.50±0.20 0.60±0.10 10ERJ8B
ERJL08
ERJ14R
3.20±0.20 2.50±0.20 0.50±0.20 0.50±0.20 0.60±0.10 16ERJ14B
ERJL14
ERJ12R 4.50±0.20 3.20±0.20 0.50±0.20 0.50±0.20 0.60±0.10 27
ERJL12
ERJ12Z
ERJL1D 5.00±0.20 2.50±0.20 0.60±0.20 0.60±0.20 0.60±0.10 27
ERJ1TR 6.40±0.20 3.20±0.20 0.65±0.20 0.60±0.20 0.60±0.10 45
ERJL1W 6.40±0.20 3.20±0.20 0.65±0.20 1.30±0.20 1.10±0.10 79
–0.20 –0.15
Feb. 201815
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
Thick Film Chip Resistors / Low Resistance Type
Test Item Performance
Requirements Test Conditions
Resistance Within Specifi ed
Tolerance 20 °C
T. C. R. Within Specifi ed
T. C. R. +25 °C/+125 °C
Overload ±2%
Rated Voltage × 2.0, 5 s
ERJ6LW : × 1.77, 5 s
ERJ8BW (R > 0.05 Ω) : × 1.77, 5 s
Resistance to Soldering Heat
±1% 270 °C, 10 s
Rapid Change of
Temperature
±1%
ERJ2LW : ±2%
–55 °C (30 min.) / +155 °C (ERJ✽LW, ERJ✽CW : +125 °C) (30 min.)，
100 cycles
High Temperature Exposure ±1% +155 °C (ERJ✽LW, ERJ✽CW : +125 °C), 1000 h
Damp Heat, Steady State ±1% 60 °C, 90% to 95%RH, 1000 h
Load Life in Humidity ±3% 60 °C, 90% to 95%RH, Rated Voltage,
1.5 h ON/0.5 h OFF cycle, 1000 h
Endurance at 70 °C ±3% 70 °C, Rated Voltage, 1.5 h ON/0.5 h OFF cycle, 1000 h
Test Item Performance
Requirements Test Conditions
Resistance Within Specifi ed
Tolerance 20 °C
T. C. R. Within Specifi ed
T. C. R. +25 °C/+125 °C
Overload ±2% Rated Voltage × 2.5 (ERJ6D : × 1.77), 5 s
Resistance to Soldering Heat
±1% 270 °C, 10 s
Rapid Change of
Temperature ±1% –55 °C (30 min.) / +155 °C (30 min.), 100 cycles
High Temperature Exposure ±1% +155 °C, 1000 h
Damp Heat, Steady State ±1% 60 °C, 90% to 95%RH, 1000 h
Load Life in Humidity ±3% 60 °C, 90% to 95%RH, Rated Voltage,
1.5 h ON/0.5 h OFF cycle, 1000 h
Endurance at 70 °C ±3% 70 °C, Rated Voltage, 1.5 h ON/0.5 h OFF cycle, 1000 h
Test Item Performance
Requirements Test Conditions
Resistance Within Specifi ed
Tolerance 20 °C
T. C. R. Within Specifi ed
T. C. R. +25 °C/+125 °C
Overload ±2% Rated Voltage × 2.5, 5 s
Resistance to Soldering Heat
±1% 270 °C, 10 s
Rapid Change of
Temperature ±1% –55 °C (30 min.) / +125 °C (30 min.), 100 cycles
High Temperature Exposure ±1% +125 °C, 1000 h
Damp Heat, Steady State ±1% 60 °C, 90% to 95%RH, 1000 h
Load Life in Humidity ±3% 60 °C, 90% to 95%RH, Rated Voltage,
1.5 h ON/0.5 h OFF cycle, 1000 h
Endurance at 70 °C ±3% 70 °C, Rated Voltage, 1.5 h ON/0.5 h OFF cycle, 1000 h
● ERJ2LW, 3LW, 6LW, 2BW, 3BW, 6BW, 8BW, 6CW, 8CW
<High power (double-sided resistive elements structure) type>
● ERJ2BS/2BQ, 3BS/3BQ, 6BS/6BQ, 8BS/8BQ, 14BS/14BQ, 6D, 3R, 6R, 8R, 14R, 12R, 12Z, 1TR
<High power type/Standard type>
● ERJL03, L06, L08, L14, L12, L1D, L1W <Low TCR type>
Performance
Feb. 201815
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
Surface Mount Resistors Safety precautions
Safety Precautions (Common precautions for Surface Mount Resistors)
The following are precautions for individual products. Please also refer to the common precautions for Fixed Resistors
in this catalog.
1. Take measures against mechanical stress during and after mounting of Surface Mount Resistors (hereafter called the
resistors) so as not to damage their electrodes and protective coatings.
Be careful not to misplace the resistors on the land patterns. Otherwise, solder bridging may occur.
2. Keep the rated power and ambient temperature within the specified derating curve.
Some circuit boards, wiring patterns, temperatures of heat generated by adjacent components, or am bi ent
tem per a tures can become factors in the rise of the temperature of the re sis tors, regardless of the level of power
applied. Therefore, check the conditions before use and op ti mize them so as not to damage the boards and peripheral
components.
Make sure to contact us before using the resistors under special conditions.
3. If a transient load (heavy load in a short time) like a pulse is expected to be applied, check and evaluate the
operations of the resistors when installed in your products before use.
Never exceed the rated power. Otherwise, the performance and/or reliability of the resistors may be impaired.
4. Before using halogen-based or other high-activity flux, check the possible effects of the flux residues on the
per for mance and reliability of the resistors.
5. When soldering with a soldering iron, never touch the resistors'bodies with the tip of the soldering iron. When using a
soldering iron with a high temperature tip, finish soldering as quickly as possible (within three seconds at 350 °C max.).
6. As the amount of applied solder becomes larger, the mechanical stress applied to the resistors increases, causing
problems such as cracks and faulty characteristics. Avoid applying an excessive amounts of solder.
7. When the resistors' protective coatings are chipped, flawed, or removed, the characteristics of the resistors may be
impaired. Take special care not to apply mechanical shock during automatic mounting or cause damage during
handling of the boards with the resistors mounted.
8. Do not apply shock to the resistors or pinch them with a hard tool (e.g. pliers and tweezers). Otherwise, the resistors'
protective coatings and bodies may be chipped, affecting their performance.
9. Avoid excessive bending of printed circuit boards in order to protect the resistors from abnormal stress.
10. Do not immerse the resistors in solvent for a long time. Before using solvent, carefully check the effects of im mer sion.
11. Transient voltage
If there is a possibility that the transient phe nom e non (significantly high voltage ap plied in a short time) may
oc cur or that a high voltage pulse may be applied, make sure to evaluate and check the char ac ter is tics of
Fixed Metal (Oxide) Film Resistors mounted on your product rather than only depending on the calculated
pow er limit or steady-state conditions to complete the de sign or decide to use the resistors.
12. Do not apply excessive tension to the terminals.
Sep. 201402
Safety Precautions (Common precautions for Fixed Resistors)
• When using our products, no matter what sort of equipment they might be used for, be sure to make a written
agreement on the specifications with us in advance. The design and specifications in this catalog are subject
to change without prior notice.
• Do not use the products beyond the specifications described in this catalog.
• This catalog explains the quality and performance of the products as individual components. Before use, check
and evaluate their operations when installed in your products.
• Install the following systems for a failsafe design to ensure safety if these products are to be used in equip ment
where a defect in these products may cause the loss of human life or other significant dam age, such as damage to
vehicles (automobile, train, vessel), traffic lights, medical equipment, aerospace equipment, electric heating
appliances, combustion/gas equipment, rotating equipment, and disaster/crime prevention equipment.
✽ Systems equipped with a protection circuit and a protection device
✽ Systems equipped with a redundant circuit or other system to prevent an unsafe status in the event of a sin gle fault
(1) Precautions for use
• These products are designed and manufactured for general and standard use in general elec tron ic equipment
(e.g. AV equipment, home electric appliances, office equipment, information and communication equipment)
• These products are not intended for use in the following special conditions. Before using the products,
carefully check the effects on their quality and performance, and determine whether or not they can be used.
1. In liquid, such as water, oil, chemicals, or organic solvent
2. In direct sunlight, outdoors, or in dust
3. In salty air or air with a high concentration of corrosive gas, such as Cl2, H2S, NH3, SO2, or NO2
4. Electric Static Discharge (ESD) Environment
These components are sensitive to static electricity and can be damaged under static shock (ESD).
Please take measures to avoid any of these environments.
Smaller components are more sensitive to ESD environment.
5. Electromagnetic Environment
Avoid any environment where strong electromagnetic waves exist.
6. In an environment where these products cause dew condensation
7. Sealing or coating of these products or a printed circuit board on which these products are mounted, with
resin or other materials
• These products generate Joule heat when energized. Carefully position these products so that their heat will
not affect the other components.
• Carefully position these products so that their temperatures will not exceed the category temperature range due
to the effects of neighboring heat-generating components. Do not mount or place heat-generating components
or inflammables, such as vinyl-coated wires, near these products.
• Note that non-cleaning solder, halogen-based highly active flux, or water-soluble flux may deteriorate the
performance or reliability of the products.
• Carefully select a flux cleaning agent for use after soldering. An unsuitable agent may deteriorate the performance
or reliability. In particular, when using water or a water-soluble cleaning agent, be careful not to leave water
residues. Otherwise, the insulation performance may be deteriorated.
(2) Precautions for storage
The performance of these products, including the solderability, is guaranteed for a year from the date of ar riv al
at your company, provided that they remain packed as they were when delivered and stored at a tem per a ture
of 5 °C to 35 °C and a relative humidity of 45 % to 85 %.
Even within the above guarantee periods, do not store these products in the following conditions. Otherwise,
their electrical performance and/or solderability may be deteriorated, and the packaging materials (e.g. taping
materials) may be deformed or deteriorated, resulting in mounting failures.
1. In salty air or in air with a high concentration of corrosive gas, such as Cl2, H2S, NH3, SO2, or NO2
2. In direct sunlight
<Package markings>
Package markings include the product number, quantity, and country of origin.
In principle, the country of origin should be indicated in English.
Sep. 201401
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