High Power Chip Resistors / Wide Terminal Type
Design and specifi cations are each subject to change without notice. Ask factory for the current technical specifi cations before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
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&
1
3
2
+
3
"
4
5
"
6 7
+
8
9
10
11
6
Thick Film
Chip Resistors
Product Code Size, Power Rating
Type : inch
A1 : 2512
B1 : 2010
B2 : 1206
B3 : 0805
Resistance Value Region
A
B
C
D
Resistance Value
Packaging Methods
VERJB2
ERJB3
ERJA1
Code Packaging Type
Punched Carrier Taping
4 mm pitch, 5,000 pcs.
Embossed Carrier Taping
4 mm pitch, 5,000 pcs.
Embossed Carrier Taping
4 mm pitch, 4,000 pcs.
10 ? R
0.22 ? R <10 ?
0.01
?
R < 0.22
?
0.005
?
R < 0.01
?
Resistance Tolerance
F
G
J
± 1 %
± 2 %
± 5 %
Shown by 3 digits or letters. Only when it is impossible,
shown by 4 digits or letters.
Power R.
1.33 W
1 W,
2 W
(
R 10 ?
)
0.75 W,
1 W
(
R 10 ?
)
0.33 W,
0.5 W
(
R 1 ?
)
U
ERJB1
(ex.) 102 : 1.0 k?
4R7 : 4.7 ?
R01 : 0.01 ? = 10 m?
R015 : 0.015 ? = 15 m?
Protective coating
Thick film
resistive element
Electrode (Inner) Electrode (Between)
Electrode (Outer)
Alumina substrate
High Power Chip Resistors / Wide Terminal Type
2512, 2010, 1206, 0805
Type: ERJ A1, B1, B2, B3
■ Features
● High solder-joint reliability by wide terminal con struc tion
● Excellent heat dissipation characteristics by wide
terminal construction
● RoHS compliant
■ Explanation of Part Numbers
■ Recommended Applications
●
Automotive electronic circuits including ECUs (Electrical con-
trol unit), anti-lock breaking systems and air-bag systems
● Current sensing for power supply circuits in a variety of
equipment
■ Construction (Example : ERJA1 type)
■ Packaging Methods, Land Pattern, Soldering Conditions and Safety Precautions
Please see Data Files
Aug. 201202
Design and specifi cations are each subject to change without notice. Ask factory for the current technical specifi cations before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
High Power Chip Resistors / Wide Terminal Type
– 17 –
M
b
b
T
L
aa
W
A2
B2 B1
A1
10–fD
B1
W
B2 C
PT
L
RRRRRRRR
3
bbaa
T
L
W
R R
3M
bb
T
L
aa
W
bb
T
L
aa
W
RR RR R RR
■ Dimensions in mm (not to scale)
■ Circuit Con guration
ERJA1 type ERJB1 type
ERJA1 type
Di men sions
(mm)
LWT a b
5.00±0.20 2.50±0.20 0.55±0.20 0.25±0.20 0.90±0.20
Di men sions
(mm)
LWTA
1B1
6.40±0.20 3.20±0.20 0.55±0.10 0.70±0.20 0.45±0.20
Di men sions
(mm)
A2B2P0DC
0.70±0.20 1.25±0.15 1.27±0.10 0.30+0.10 0.4 min.
–0.20
ERJB2 type ERJB3 type
Di men sions (mm)
LWT a b
5 mΩ<R<10 mΩ
3.20±0.20 1.60±0.15 0.65±0.15 0.30±0.20 0.30±0.20
10 mΩ<R<220 mΩ
0.50±0.20
220 mΩ<R<1 MΩ
0.20±0.20
ERJB1 type
Mass (Weight) [1000 pcs.] : 11 g
Di men sions
(mm)
LWT a b
2.00±0.10 1.25±0.10 0.50±0.10 0.25±0.15 0.40±0.15
ERJB3 type
( R< 10 mΩ ) ( 10 mΩ < R < 1 MΩ )
ERJB2 type
< High resistance zone >< Less than 10 mΩ > < Low resistance zone >
Mass (Weight) [1000 pcs.] : 40 g
Mass (Weight) [1000 pcs.] : 4.8 g
Mass (Weight) [1000 pcs.] : 27 g
Aug. 201202
High Power Chip Resistors / Wide Terminal Type
Design and specifi cations are each subject to change without notice. Ask factory for the current technical specifi cations before purchase and/or use.
Should a safety concern arise regarding this product, please be sure to contact us immediately.
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–60 –40 –20 0 20 40 60 80 100 120 140 160 180
0
20
40
60
80
100 70 °C
155 °C
Ambient Temperature (°C)
Rated Load (%)
–55 °C
Power Derating Curve
For resistors operated in ambient temperature above
70 °C, power rating shall be derated in accordance
with the fi gure on the right.
(1) Rated Continuous Working Voltage (RCWV) shall be de ter mined from RCWV=√Power Rating × Re sis tance Values, or Limiting Element Voltage
list ed above, whichever less.
(2) Overload (Short-time Overload) Test Voltage (SOTV) shall be de termined from SOTV=2.5 × Power Rating or max. Over load Volt age list ed above
which ev er less.
■ Ratings
Type
(inch size)
Power
Rating
at 70 °C (W)
Limiting
Element
Voltage(1)
(V)
Maximum
Overload
Voltage(2)
(V)
Resistance
Tolerance
(%)
Resistance
Range
(Ω)
T.C.R.
(×10–6/°C)
Category
Temperature
Range
(°C)
ERJA1
(2512) 1.33 200 400
±1
100 m to 10 k (E24)
R < 100 mΩ : ±350
100 mΩ < R : ±100 (±1%)
±200 (±2%, ±5%)
–55 to +155
±2, ±5 10 m to 10 k (E24)
ERJB1
(2010)
1
2(R < 10 Ω)200 400 ±1, ±2, ±5 10 m to 10 k (E24)
R < 22 mΩ : ±350
22 mΩ < R < 47 mΩ : ±200
47 mΩ < R < 100 mΩ : ±150 (±1%)
±200 (±2%, ±5%)
100 mΩ < R : ±100 (±1%)
±200 (±2%, ±5%)
–55 to +155
ERJB2
(1206)
0.75
1(R < 10 Ω)200 400
±1, ±2 10 m to 1 M (E24)
R < 22 mΩ : 0 to +300
22 mΩ < R < 47 mΩ : 0 to +200
47 mΩ < R < 100 mΩ : 0 to +150
100 mΩ < R < 220 mΩ : 0 to +150 (±1%)
0 to +200 (±2%, ±5%)
220 mΩ < R : ±100 (±1%)
±200 (±2%, ±5%)
–55 to +155
±5
5 m to 1 M
5 m to 9 m : 1mΩ step
10 m to 1 M : E24
ERJB3
(0805)
0.33
0.5(R < 1 Ω)150 200 ±1, ±2, ±5 20 m to 10 (E24)
R < 47 mΩ : 0 to +300
47 mΩ < R < 1 Ω : 0 to +200
1 Ω < R : ±100 (±1%)
±200 (±2%, ±5%)
–55 to +155
（ ）
Aug. 201202
