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.
– 22 –
E
1
R
2
J
3
A
4
1
5
A
6 7
J
8
1
9
0
10
2
11
U
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
4mmpitch, 5,000 pcs.
Embossed Carrier Taping
4mmpitch, 5,000 pcs.
Embossed Carrier Taping
4mmpitch, 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
1W,
2W
(
R<10
)
0.75 W,
1W
(
R<10
)
0.33 W,
0.5 W
(
R<1
)
U
ERJB1
(ex.) 102 : 1.0 k
4R7 : 4.7
R01 : 0.01 =10m
R015 : 0.015 =15m
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
control unit), anti-lock breaking systems and air-bag systems
● Current sensing for power supply circuits in a variety
of equipment
■Packaging Methods
Please see Pages 40 to 43
■
Recommended Soldering Conditions
Please see Page 46
■
Recommended Land Pattern
Please see Pages 44 to 45
■Safety Precautions
Please see Page 47
■Construction (Example : ERJA1 type)
Mar. 201101
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
– 23 –
l03
b
b
T
L
aa
W
A2
B2 B1
A1
10–φD
B1
W
B2 C
PT
L
102
RRRRRRRR
R20
bbaa
T
L
W
R R
Rl0
bb
T
L
aa
W
bb
T
L
aa
W
RR RR R R R
■Dimensions in mm (not to scale)
■Circuit Confi 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)
A2B2PφDC
0.70±0.201.25±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 m<R<10 m
3.20±0.20 1.60±0.15 0.65±0.15 0.30±0.20 0.30±0.20
10 m<R<220 m
0.50±0.20
220 m<R<1 M
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 m ) ( 10 m < R < 1 M)
ERJB2 type
< High resistance zone >< Less than 10 m > < Low resistance zone >
Mass (Weight) [1000 pcs.] : 40 g
Mass (Weight) [1000 pcs.] : 4.8 g
Mass (Weight) [1000 pcs.] : 27 g
Sep. 201000
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.
– 24 –
–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.
(3) Please contact us when resistons with guaranteed high power are needed.
■Ratings
Type
(inch size)
Power
Rating
at 70 °C (W)
Limiting
Element
Voltage(1)
(V)
Maximum
Overload
Voltage(2)
(V)
Resistance
Tolerance
(%)
Resistance
Range
()
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 m: ±350
100 m< R : ±100 (±1%)
±200 (±2%, ±5%)
–55 to +155
±2, ±5 10 m to 10 k (E24)
ERJB1
(2010)
1
2
(R < 10 )
(3) 200 400 ±1, ±2, ±5 10 m to 10 k (E24)
R < 22 m: ±350
22 m< R < 47 m : ±200
47 m< R < 100 m : ±150 (±1%)
±200 (±2%, ±5%)
100 m< R : ±100 (±1%)
±200 (±2%, ±5%)
–55 to +155
ERJB2
(1206)
0.75
1
(R < 10 )
(3) 200 400
±1, ±2 10 m to 1 M (E24)
R < 22 m: 0 to +300
22 m< R < 47 m : 0 to +200
47 m< R < 100 m : 0 to +150
100 m< R < 220 m: 0 to +150 (±1%)
0 to +200 (±2%, ±5%)
220 m< R : ±100 (±1%)
±200 (±2%, ±5%)
–55 to +155
±5
5 m to 1 M
5 m to 9 m : 1mstep
10 m to 1 M : E24
ERJB3
(0805)
0.33
0.5(R < 1 )
(3) 150 200 ±1, ±2, ±5 20 m to 10 (E24)
R < 47 m: 0 to +300
47 m< R < 1 : 0 to +200
1 < R : ±100 (±1%)
±200 (±2%, ±5%)
–55 to +155
（ ）
Mar. 201101