Multilayer Chip NTC Thermistors
Type:
ERTJ
NTC Thermistors (Chip Type)
n
Features
lHighly reliable multilayer / monolithic structure
lSuperior heat resistance to reflow soldering and
excellent solderability thanks to the unique exter-
nal electrodes of three metallic layers
lWide ranges of operating temperature (Ð40 to 125 ¡C)
lLow Capasitance (less 3pF )
n
Recommended Applications
lCellular Phone
¥Temperature compensation for Crystal Oscillator
¥Temperature compensation for Semiconductor
lPersonal Computer
¥Temperature detection for CPU and memory
device
¥Temperature compensation for Ink-viscosity (Inkjet
Printer)
lBattery Pack
¥Temperature detection for battery cell
lLiquid Crystal Display
¥Temperature compensation for contrast
¥Temperature compensation for Back light
n
Explanation of Part Numbers
The Multilayer Chip NTC Thermistors are especially
designed for surface mountings featuring the minia-
ture sizes of "0402" and "0603" type (EIA) with highly
reliable multilayer and monolithic structure.
Product Code
Shape
Size Type (EIA)
Packaging Styles Resistance
Tolerance
Resistance R
25
( )
Center of B Value (K) Special
Specification
Design and Specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use.
Whenever a doubt about safety issues arises from this product, please inform us immediately for technical consultation.
No Name
ACeramic Semiconductor
BInner electrode
CSubstrate electrode
DIntermediate electrode
EExternal electrode
Leader part
LWTL
1
, L
2
■Construction
■Dimensions in mm (not to scale)
Size Code (EIA)
ÒJ0Ó Type (0402) 1.00±0.10 0.50±0.05 0.50±0.05 0.20±0.10
ÒJ1Ó Type (0603) 1.60±0.15 0.80±0.10 0.80±0.10 0.30±0.20
NTC Thermistors (Chip Type)
■Packaging Specifications
●Standard Packing Quantity
Paper taping Bulk
J0 (0402) 0.5 mm Pitch 2 mm: 10000 (50000) pcs./reel
1000 pcs./bag
J1 (0603) 0.8 mm Pitch 2 mm: 8000 (20000) pcs./reel
1000 pcs./bag
Pitch 4 mm: 4000 (10000) pcs./reel
Size Code
( ) for large size reel applied
Style
Thickness
●Reel for Taping
●Paper Taping
P
1
: 2mm
Symbol A B C D E W W
1
Dim. f180 f60.0
±0.5
13.0
±0.5
21.0
±0.8
2.0
±0.5
9.0
±0.3
1.3
±0.2
(mm)
(330±5) (50 min.) (20 min.) (9.5±1.0) (2.0±0.5)
( ): Large size reel
●Leader Part and Taped End
0
Ð1
ABWFEP
1
P
2
P
0
fD
0
t
1
t
2
Dim.
J0 0.65 1.15 8.0 3.50 1.75 2.00 2.00 4.0 1.5 0.7 1.0
(mm) (0402) ±0.05 ±0.05 ±0.2 ±0.05 ±0.10 ±0.05 ±0.05 ±0.1 +0.1 max. max.
0
P
1
: 4mm
ABWFEP
1
P
2
P
0
fD
0
t
1
t
2
Dim.
J1 1.10 1.90 8.0 3.50 1.75 4.0 2.00 4.0 1.5 1.1 1.4
(mm) (0603) ±0.10 ±0.10 ±0.2 ±0.05 ±0.10 ±0.1 ±0.05 ±0.1 +0.1 max. max.
0
SizeCode
Symbol
SizeCode
Symbol
Design and Specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use.
Whenever a doubt about safety issues arises from this product, please inform us immediately for technical consultation.
kn (R
25
/R
50
)
1/298.15Ð1/323.15
ÒJ1Ó
(0603)
Resistance
to Soldering
Heat
Operating
Temperature
Range
■
Ratings and Characteristics
NTC Thermistors (Chip Type)
ERTJ1VA2201
✽
ERTJ1VA3301
✽
ERTJ1VA4001
✽
ERTJ1VA4701
✽
ERTJ1VA6801
✽
ERTJ1VA1011
✽
ERTJ1VT1021
✽
ERTJ1VT1521
✽
ERTJ1VT2021
✽
ERTJ1VT2221
✽
ERTJ1VT3021
✽
ERTJ1VT3321
✽
ERTJ1VT4721
✽
ERTJ1VR3321
✽
ERTJ1VR4721
✽
ERTJ1VR6821
✽
ERTJ1VR1031
✽
ERTJ1VR1531
✽
ERTJ1VR2231
✽
ERTJ1VR3331
✽
ERTJ1VR4731
✽
ERTJ1VR6831
✽
ERTJ1VV4731
✽
ERTJ1VV6831
✽
ERTJ1VV1041
✽
ERTJ1VV1541
✽
ERTJ0EA2201
✽
ERTJ0EA3301
✽
ERTJ0EA4001
✽
ERTJ0EA4701
✽
ERTJ0EA6801
✽
ERTJ0EA1011
✽
ERTJ0EA1511
✽
ERTJ0ET1021
✽
ERTJ0ET1521
✽
ERTJ0ET2021
✽
ERTJ0ET2221
✽
ERTJ0ET3021
✽
ERTJ0ET3321
✽
ERTJ0ET4721
✽
ERTJ0ER3321
✽
ERTJ0ER4721
✽
ERTJ0ER6821
✽
ERTJ0ER1031
✽
ERTJ0ER1531
✽
ERTJ0ER2231
✽
ERTJ0ER3331
✽
ERTJ0EV4731
✽
ERTJ0EV6831
✽
22Ω
33Ω
40Ω
47Ω
68Ω
100Ω
1kΩ
1.5kΩ
2.0kΩ
2.2kΩ
3.0kΩ
3.3kΩ
4.7kΩ
3.3kΩ
4.7kΩ
6.8kΩ
10kΩ
15kΩ
22kΩ
33kΩ
47kΩ
68kΩ
47kΩ
68kΩ
100kΩ
150kΩ
22Ω
33Ω
40Ω
47Ω
68Ω
100Ω
150Ω
1kΩ
1.5kΩ
2.0kΩ
2.2kΩ
3.0kΩ
3.3kΩ
4.7kΩ
3.3kΩ
4.7kΩ
6.8kΩ
10kΩ
15kΩ
22kΩ
33kΩ
47kΩ
68kΩ
2750K±3%
2800K±3%
4500K±3%
4250K±3%
4700K±3%
2750K±3%
2800K±3%
4500K±3%
4250K±3%
4700K±3%
(2700K)
(2750K)
(4450K)
(4300K)
(4750K)
(2700K)
(2750K)
(4450K)
(4300K)
(4750K)
Approximately
3mw/¡C
Approximately
2mw/¡C
Ð40 ¡C to
125 ¡C
Size Code
(EIA) Part No.
Zero-Power
Resistance
(at 25 ¡C)
B Value
B
25
/
50
B
25
/
85
Heat
Dissipation
Constant
Soldering
temp.
270±5 ¡C
Dipping
Time:
3.0±0.5 sec.
ÒJ0Ó
(0402)
R
25
=Resistance at 25.0±0.2 ¡C
R
50
=Resistance at 50.0±0.2 ¡C
R
85
=Resistance at 85.0±0.2 ¡C
kn (R
25
/R
85
)
1/298.15Ð1/358.15
✽✽
Resistance Tolerance
✽✽
Mounted on a glass epoxy board (1.6t)
B25/85=
B25/50=
✽✽
Design and Specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use.
Whenever a doubt about safety issues arises from this product, please inform us immediately for technical consultation.
