THERMAL SENSORS / CIRCUIT PROTECTORS
TECHNOLOGY OF TOMORROW
THERMAL SENSORS
NTC THERMISTOR
THICK FILM
NT73
STRUCTURE
1
2
3
4
5
6
7
8
9
Ceramic substrate
Top termination
(Ag Pd)
Bottom termination
(Ag)
Resistor element
Glass layer
Protective layer
End termination
(Ni Cr)
Diffusion barrier
(Ni)
Solder plating
IDENTIFICATION
PRODUCT CODE
NT73
COATING COLOR
Pink
MARKING
Black, 3 digits (1J has no marking)
Products with Pb-free terminations
meet RoHS requirements
TYPE DESIGNATION (HOW TO ORDER)
Old Part No.
New Part No.
(Pb-free)
NT73
NT73
PRODUCT CODE
2A
2A
STYLE
T
RESISTANCE
TERMINATION
SURFACE MATERIAL TOLERANCE
T: Sn
L: Sn/Pb
K
TD
TD
TAPING*
TD, BK
*Please see “PACKAGING”
33K
333
K
3800
J
Specifications given herein may be changed at any time without prior notice.
Please confirm technical specifications before you order and/or use.
NOMINAL
NOM. RESISTANCE RESISTANCE
3 digits
TOLERANCE B CONSTANT
L(±15%), K(±10%)
J(±5%)
B CONSTANT
TOLERANCE
H(±3%)
J(±5%)
K(±10%)
FEATURES
■
■
■
■
■
SMD style thick film NTC thermistor
■
Operating temperature range:
Anti leaching nickel barrier terminations
- 55° C ... + 125° C
Thermal time constant ~ 2 sec.
■
Suitable for reflow and wave soldering
Power rating: 5 mW
Meets or exceeds IEC 60115-1, JIS C 5201-8, JIS C 2570
DIMENSIONS (mm)
TYPE
NT73 1J
NT73 2A
NT73 2B
L
1.6 ± 0.2
2.0 ± 0.2
3.2 ± 0.2
W
0.80 ± 0.1
1.25 ± 0.1
1.60 ± 0.2
H
0.5 ± 0.1
+0.2
0.5
±
–0.1
0.1
0.6 ± 0.1
c
0.3 ± 0.1
0.4 ± 0.2
0.5 ± 0.3
d
0.3 ± 0.1
+0.2
0.3
±
–0.1
0.2
+0.2
0.4
±
–0.1
0.1
RATING
SIZE
TYPE
THERMAL**
DISSIPATION CONSTANT
POWER
RATING
NOM. RESISTANCE
AT 25°C*
6.8 kΩ
10 kΩ
10 kΩ
15 kΩ
20 kΩ
22 kΩ
30 kΩ
33 kΩ
47 kΩ
47 kΩ
68 kΩ
100 kΩ
1 kΩ
2 kΩ
2.2 kΩ
2.4 kΩ
3.3 kΩ
4.7 kΩ
5 kΩ
6.8 kΩ
10 kΩ
10 kΩ
10 kΩ
15 kΩ
15 kΩ
20 kΩ
20 kΩ
22 kΩ
22 kΩ
30 kΩ
30 kΩ
33 kΩ
33 kΩ
47 kΩ
47 kΩ
50 kΩ
68 kΩ
68 kΩ
100 kΩ
100 kΩ
150 kΩ
150 kΩ
1k
Ω
2.2 kΩ
3.3 kΩ
4.7 kΩ
6.8 kΩ
10 kΩ
22 kΩ
33 kΩ
47 kΩ
68 kΩ
100 kΩ
RESISTANCE
TOLERANCE
B CONSTANT
AT 25° C / 75° C
3500K
3700K
B CONSTANT
TOLERANCE
K (±10%)
J(±5%)
H(±3%)
J(±5%)
0603
NT73 1J
2 mW/K
(ref.)
5 mW
J(±5%)
K(±10%)
3800K
4100K
3800K
3200K
H(±3%)
J(±5%)
K(±10%)
3500K
J(±5%)
K(±10%)
J(±5%)
H(±3%)
J(±5%)
H(±3%)
J(±5%)
H(±3%)
J(±5%)
H(±3%)
J(±5%)
H(±3%)
J(±5%)
H(±3%)
J(±5%)
H(±3%)
H(±3%)
J(±5%)
H(±3%)
J(±5%)
H(±3%)
J(±5%)
H(±3%)
K(±10%)
K(±10%)
L(±15%)
J(±5%), K(±10%), L(±15%)
K(±10%), L(±15%)
3800K
3500K
3800K
4100K
3800K
4100K
3800K
4100K
3800K
4100K
3800K
4100K
3800K
4100K
3800K
4100K
3950K
3800K
4100K
3800K
4100K
3800K
4100K
3200K
3500K
THERMAL SENSORS
CIRCUIT PROTECTORS
0805
NT73 2A
2.8 mW/K
(ref.)
5 mW
J(±5%)
K(±10%)
L(±15%)
K(±10%)
L(±15%)
1206
NT73 2B
3.0 mW/K
(ref.)
5 mW
J(±5%)
K(±10%)
L(±15%)
3800K
J(±5%)
* Special ohmic values on request.
** Thermal Dissipation Constant – In the atmosphere – (Reference)
EUROPE GmbH • Kaddenbusch 6 • D-25578 Dägeling / ITZEHOE • PHONE: +49 (0) 48 21 / 89 89-0 • FAX: +49 (0) 48 21/ 89 89 89 • Internet: www.koaeurope.de
Revision:
26. Oct.
2005
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