NTC SMD THERMISTORS
NC 12 – NC 20 (PdPtAg Termination)
Chip thermistors are a high quality and low cost device especially developed
for surface mounting applications. They are widely used for temperature
compensation but can also achieve temperature control of printed circuits.
Its silver - palladium - platinum metallization provides a high degree of
resistance to dewetting of the terminations during soldering (typically 260°C
/ 15 s). Parts are suitable for hybrid assembly process, not suitabel for lead
free soldering.
NC 12
IEC SIZE : 0805
Types
NC 20
IEC SIZE : 1206
3.2 (.126) ± 0.4 (.016)
2 (.079) ± 0.3 (.012)
1.6 (.063)
± 0.25 (.010)
1.25 (.049)
± 0.2 (.008)
DIMENSIONS: millimeters (inches)
0.5 (.020)
... 1.5 (.059)
0.5 (.020)
... 1.3 (.051)
0.2 (.008) min
0.2 (.008) min
0.2 (.008) min
Terminations
0.2 (.008) min
Silver – palladium – platinum metallization
Marking
On packaging only
Climatic category
40/125/56
Operating temperature
-55°C to +150°C
Tolerance on Rn (25°C)
±3%*, ±5%, ±10%, ±20%
Maximum dissipation at 25°C
Thermal dissipation factor
0.12 W
0.24 W
2 mW/°C
4 mW/°C
5s
7s
Thermal time constant
Resistance - Temperature characteristics: pages 29 to 33.
FEATURES
APPLICATIONS
• Fast thermal response
• LCD compensation
• Commercial, Industrial and Automotive Applications
• Battery packs
• PdPtAg Termination
• Mobile phones
• Suitable for hybrid assembly
• CD players
• AEC-Q200 based qualified
• Heating systems
• Air-conditioning systems
• Refrigeration
• Temperature control of Switch Mode Power Supplies
• Compensation of pressure sensors
• Protection of power transistors in various electronic
circuits and more
HOW TO ORDER
NC 20
K0
0103
M
Type
Material Code
Resistance
Tolerance
NC12 (0805)
NC20 (1206)
K
(See tables
pages 15)
10,000 Ω
(See tables page 15)
H (±3%)*
J (±5%)
K (±10%)
M (±20%)
* Optional tolerance, please contact factory
BA
Suffix: Packaging
– –: Bulk (5000 pcs/bag)
NB20 BA: Plastic tape (180mm diam. reel, 3000 pcs/reel)
BE: Plastic tape (1/2 reel, 1500 pcs/reel)
BC: Plastic tape (330mm diam. reel, 10,000 pcs/reel)
NB12 BB: Cardboard tape (180mm diam. reel, 4000 pcs/reel)
BF: Cardboard tape (1/2 reel, 2000 pcs/reel)
BD: Cardboard tape (330mm diam. reel, 10,000 pcs/reel)
The Important Information/Disclaimer is incorporated in the catalog where these specifications came from or
available online at www.avx.com/disclaimer/ by reference and should be reviewed in full before placing any order.
010617
– rf microwave products –
15
NTC SMD THERMISTORS
NC 12 – NC 20 (PdPtAg Termination)
TABLE OF VALUES
NC 12
IEC SIZE : 0805
Types
NC 12 KC 0 180
NC 12 KC 0 220
NC 12 KC 0 270
NC 12 KC 0 330
NC 12 KC 0 390
NC 12 KC 0 470
NC 12 KC 0 560
NC 12 KC 0 680
NC 12 KC 0 820
NC 12 KC 0 101
NC 12 MC 0 121
NC 12 MC 0 151
NC 12 MC 0 181
NC 12 MC 0 221
NC 12 MC 0 271
NC 12 MC 0 331
NC 12 MC 0 391
NC 12 MC 0 471
NC 12 MC 0 561
NC 12 MC 0 681
NC 12 MC 0 821
NC 12 MC 0 102
NC 12 MC 0 122
NC 12 MC 0 152
NC 12 MC 0 182
NC 12 MC 0 222
NC 12 MC 0 272
NC 12 MC 0 332
NC 12 J 0 0332
NC 12 J 0 0392
NC 12 J 0 0472
NC 12 J 0 0502
NC 12 J 0 0562
NC 12 K 0 0682
NC 12 K 0 0822
NC 12 K 0 0103
NC 12 K 0 0123
NC 12 L 0 0153
NC 12 L 0 0183
NC 12 M 0 0223
NC 12 M 0 0273
NC 12 M 0 0333
NC 12 M 0 0393
NC 12 N 0 0473
NC 12 N 0 0503
NC 12 N 0 0563
NC 12 L 2 0683
NC 12 N 0 0823
NC 12 P 0 0104
NC 12 P 0 0124
NC 12 P 0 0154
NC 12 P 0 0184
NC 12 Q 0 0224
16
Rn at 25°C
(Ω)
18
22
27
33
39
47
56
68
82
100
120
150
180
220
270
330
390
470
560
680
820
1,000
1,200
1,500
1,800
2,200
2,700
3,300
3,300
3,900
4,700
5,000
5,600
6,800
8,200
10,000
12,000
15,000
18,000
22,000
27,000
33,000
39,000
47,000
56,000
68,000
82,000
100,000
120,000
150,000
180,000
220,000
Material
Code
KC
MC
J
B (K)
3470 ± 5%
3910 ± 3%
3480 ± 3%
NC 20
IEC SIZE : 1206
α at 25°C
(%/°C)
– 3.9
– 4.4
– 3.9
K
3630 ± 3%
– 4.0
L
3790 ± 3%
– 4.2
M
3950 ± 3%
– 4.4
N
4080 ± 3%
– 4.6
L2
N
3805 ± 3%
4080 ± 3%
– 4.1
– 4.6
P
4220 ± 3%
– 4.7
Q
4300 ± 3%
-4.7
Types
Rn at 25°C
(Ω)
NC 20 KC 0 100
NC 20 KC 0 120
NC 20 KC 0 150
NC 20 KC 0 180
NC 20 KC 0 220
NC 20 KC 0 270
NC 20 KC 0 330
NC 20 KC 0 390
NC 20 KC 0 470
NC 20 KC 0 560
NC 20 KC 0 680
NC 20 KC 0 820
NC 20 KC 0 101
NC 20 MC 0 121
NC 20 MC 0 151
NC 20 MC 0 181
NC 20 MC 0 221
NC 20 MC 0 271
NC 20 MC 0 331
NC 20 MC 0 391
NC 20 MC 0 471
NC 20 MC 0 561
NC 20 MC 0 681
NC 20 MC 0 821
NC 20 MC 0 102
NC 20 MC 0 122
NC 20 MC 0 152
NC 20 I 0 0182
NC 20 I 0 0222
NC 20 I 0 0272
NC 20 I 0 0332
NC 20 J 0 0392
NC 20 J 0 0472
NC 20 J 0 0502
NC 20 J 0 0562
NC 20 J 0 0682
NC 20 K 0 0822
NC 20 K 0 0103
NC 20 K 0 0123
NC 20 K 0 0153
NC 20 L 0 0183
NC 20 L 0 0223
NC 20 M 0 0273
NC 20 M 0 0333
NC 20 M 0 0393
NC 20 M 4 0473
NC 20 M 4 0503
NC 20 N 0 0563
NC 20 N 0 0683
NC 20 N 0 0823
NC 20 N 0 0104
NC 20 P 0 0124
NC 20 P 0 0154
NC 20 P 0 0184
NC 20 P 0 0224
NC 20 Q 0 0274
NC 20 Q 0 0334
NC 20 Q 0 0394
NC 20 Q 0 0474
NC 20 R 0 0564
NC 20 R 0 0684
NC 20 R 0 0824
NC 20 R 0 0105
10
12
15
18
22
27
33
39
47
56
68
82
100
120
150
180
220
270
330
390
470
560
680
820
1,000
1,200
1,500
1,800
2,200
2,700
3,300
3,900
4,700
5,000
5,600
6,800
8,200
10,000
12,000
15,000
18,000
22,000
27,000
33,000
39,000
47,000
50,000
56,000
68,000
82,000
100,000
120,000
150,000
180,000
220,000
270,000
330,000
390,000
470,000
560,000
680,000
820,000
1,000,000
Material
Code
B (K)
α at 25°C
(%/°C)
KC
3470 ± 5%
– 3.9
MC
3910 ± 3%
– 4.4
I
3250 ± 5%
– 3.7
J
3480 ± 3%
– 3.9
K
3630 ± 3%
– 4.0
L
3790 ± 3%
– 4.2
M
3950 ± 3%
– 4.4
M4
3995 ± 3%
– 4.4
N
4080 ± 3%
– 4.6
P
4220 ± 3%
– 4.7
Q
4300 ± 3%
– 4.7
R
4400 ± 3%
– 4.8
The Important Information/Disclaimer is incorporated in the catalog where these specifications came from or
available online at www.avx.com/disclaimer/ by reference and should be reviewed in full before placing any order.
062521
– rf microwave products –
PACKAGING FOR AUTOMATIC INSERTION
NTC Chip Thermistors / NC/NB Series
AUTOMATIC INSERTION
Cover Tape
Max
3°
The mechanical and dimensional reel characteristics are in accordance with
the IEC publication 286-3.
5.5 (.217)
±0.2 (.008)
Max
3°
30µ ± 5µ
T
K
Designation
Hole
+0.2 (.008)
1 (.039) -0
A1
B1
B0
R = 0.3 (.012) Max.
Super 8 Plastic Tape Packaging:
F
D0
P2
E
P0
Max
3°
Max
3°
A0
Direction of
unreeling
Symbol
Value
Tolerance
Tape width
W
8
±0.2
Tape thickness
T
0.4 max.
Pitch of the sprocket holes
P0
Diameter of the sprocket holes
4
Distance
E
-0
1.75
Distance (center to center)
F
3.5
Distance (center to center)
NC 12 (0805)
±0.1
1.5
D0
W
±0.1
±0.1
±0.05
P2
2
±0.1
A0
1.5
±0.1
B0
K
2.4
1.4 max.
±0.1
K ±0.1
(size is adjustable)
(K = t1 +0.2)
Sizes of the
cavities
NC 20 (1206)
A0
1.95
±0.1
B0
K
3.55
1.5 max.
±0.1
K ±0.1
(size is adjustable)
(K = t1 +0.2)
+0
ø180 (7.09) - 2 (.079)
+ 0.15 (.006)
ø 62 (2.44)
± 1.5 (.059)
14.4 (.567)
max.
Reel
according to
ISO/DIS 3639-2
8.4 (.331)
+0.15 (.006)
Reel
Direction of unreeling
ø 12.75 (.502) - 0
Upper side
Bottom side
+ 0.5 (.020)
ø 20.5 (.087) - 0
QUANTITY PER REEL
Type
NB20
NC20
Suffix
Description
Qty Per Reel
BA
Plastic tape (180mm diam. reel)
3,000 pcs
BE
Plastic tape (1/2 reel)
1,500 pcs
BC
Plastic tape (330mm diam. reel)
10,000 pcs
The Important Information/Disclaimer is incorporated in the catalog where these specifications came from or
available online at www.avx.com/disclaimer/ by reference and should be reviewed in full before placing any order.
010617
– rf microwave products –
17
PACKAGING FOR AUTOMATIC INSERTION
NTC Chip Thermistors / NC/NB Series
AUTOMATIC INSERTION
8mm Paper Tape Packaging:
10 PITCHES CUMULATIVE
TOLERANCE ON TAPE
0.20mm (0.008)
P0
The mechanical and dimensional reel characteristics are in
accordance with the IEC publication 286-3.
D0
T
P2
E1
BOTTOM
COVER
TAPE
TOP
COVER
TAPE
F
E2
B0
W
G
T1
T1
Designation
A0
CENTER LINES
OF CAVITY
CAVITY SIZE
SEE NOTE 1
P1
User Direction of Feed
Symbol
Value
Tolerance
Tape width
W
8
-.0.1/+0.3
Tape thickness
T
1.1 max.
Pitch of the sprocket holes
P0
Diameter of the sprocket holes
D0
4
1.5
Distance
Distance (center to center)
Distance (center to center)
Cover tape thickness
Distance
Distance
0805/0603
Component pitch
0402
E1
F
P2
T1
E2
G
±0.1
±0.1
-0/+0.1
1.75
3.5
2
0.10 max.
6.25 min.
0.75 min.
4
2
P1
±0.1
±0.05
±0.05
±0.1
±0.1
+0
ø180 (7.09) - 2 (.079)
+ 0.15 (.006)
ø 62 (2.44)
± 1.5 (.059)
14.4 (.567)
max.
Reel
according to
ISO/DIS 3639-2
8.4 (.331)
+0.15 (.006)
Reel
Direction of unreeling
ø 12.75 (.502) - 0
Upper side
Bottom side
+ 0.5 (.020)
ø 20.5 (.087) - 0
QUANTITY PER REEL
Type
Suffix
Description
Qty Per Reel
NB12
BB
Cardboard tape (180mm diam. reel)
4,000 pcs
NC12
BF
Cardboard tape (1/2 reel)
2,000 pcs
BD
Cardboard tape (330mm diam. reel)
10,000 pcs
NB21
NC21
18
The Important Information/Disclaimer is incorporated in the catalog where these specifications came from or
available online at www.avx.com/disclaimer/ by reference and should be reviewed in full before placing any order.
010617
– rf microwave products –
SURFACE MOUNTING GUIDE
Chip Thermistor – Application Notes
STORAGE
Wave
Good solderability is maintained for at least twelve months, provided the
components are stored in their “as received” packaging at less than 40°C
and 70% RH.
300
Preheat
Natural
Cooling
250
Solder Temp.
SOLDERABILITY / LEACHING
Terminations to be well soldered after immersion in a 60/40 tin/lead solder
bath at 235 ± 5°C for 2 ± 1 seconds.
Terminations will resist leaching for at least the immersion times and
conditions recommendations shown below.
T
200
230ºC
to
250ºC
150
100
50
P/N
Termination
Type
Solder Tin/
Lead
Solder
Temp ºC
Immersion Time
Seconds
NC
AgPdPt
60/40
260 ± 5
15 max
NB
Nickel Barrier
60/40
260 ± 5
30 ± 1
0
1 to 2 min
3 sec. max
(Preheat chips before soldering)
T/maximum 150°C
a) The visual standards used for evaluation of solder joints will
need to be modified as lead free joints are not as bright as
with tin-lead pastes and the fillet may not be as large.
b) Resin color may darken slightly due to the increase in
temperature required for the new pastes.
c) Lead-free solder pastes do not allow the same self
alignment as lead containing systems. Standard mounting
pads are acceptable, but machine set up may need to be
modified.
NB products are compatible with a wide range of soldering conditions
consistent with good manufacturing practice for surface mount components.
This includes Pb free reflow processes with peak temperatures up to 270ºC.
Recommended profiles for reflow and wave soldering are shown below for
reference.
NC products are recommended for lead soldering application or gluing
techniques.
Reflow
300
D2
RECOMMENDED
Natural
Cooling
Preheat
SOLDERING PAD
Solder Temp.
250
200
D4
(inches)
220ºC
to
250ºC
150
D5
REFLOW SOLDERING
100
0
1min
1min
10 sec. max
(Minimize soldering time)
Temperature °C
D3
Dimensions in mm
50
300
250
200
150
100
50
0
0
D1
LAYOUT
Case
Size
P/N
0603
NB21
0805
NB12
1206
NB20
D1
D2
D3
D4
D5
2.30
(.091)
3.00
(.118)
4.00
(.157)
0.80
(.031)
1.00
(.039)
1.00
(.039)
0.70
(.028)
1.00
(.039)
2.00
(.079)
0.80
(0.31)
1.00
(.039)
1.00
(.039)
0.75
(.030)
1.25
(.049)
2.50
(.098)
D1
D2
D3
D4
D5
3.10
(.122)
4.00
(.157)
5.00
(.197)
1.20
(.047)
1.50
(.059)
1.50
(.059)
0.70
(.028)
1.00
(.039)
2.00
(.079)
1.20
(.047)
1.50
(.059)
1.50
(.059)
0.75
(.030)
1.25
(.049)
1.60
(.063)
WAVE SOLDERING
50
100
150
• Pre-heating: 150°C ±15°C / 60-90s
• Max. Peak Gradient: 2.5°C/s
• Peak Temperature: 245°C ±5°C
• Time at >230°C: 40s Max.
200
250
300
Time (s)
Case
Size
P/N
0603
NB21
0805
NB12
1206
NB20
The Important Information/Disclaimer is incorporated in the catalog where these specifications came from or
available online at www.avx.com/disclaimer/ by reference and should be reviewed in full before placing any order.
010617
– rf microwave products –
19
NTC ACCURATE THERMISTORS
NP30 - NJ 28 – NI 24 – NK 20
High precision resistance and an outstanding ability to reproduce the
sensibility index B, make these ranges of products the types of thermistors
ideal for temperature measurement applications.
are able to meet the most accurate requirements.
Leaded or unleaded, these small size and rapid response time thermistors
FEATURES
APPLICATIONS
High Accuracy
Fast thermal response
Commercial, Industrial and Automotive Applications
AEC-Q200 based qualification
•
•
•
•
•
•
•
•
•
•
OPTIONS
Consult factory for availability of options
other nominal resistance values
other tolerances
controlled dimensions (e.g. reduced head size for NP30)
alternative lead materials (e.g. steel, nickel)
customized lead lengths, spacing, forming (kink) etc.
epoxy coating on leads (NP30)
Types
NP 30
NJ 28
NI 24
NK 20
Finish
Coated chip with epoxy+
tinned copper wires
Coated chip with phenolic
resin + varnish + tinned
copper wires
Coated chip with epoxy
AWG30 insulated leads +
Silver plated nickel wires
Chip for Wire bonding
35 (1.38) min
DIMENSIONS:
millimeters (inches)
2.4 (.094) max
3 (.118) max
2.4 (.094) max
0.57 (.022) +7%
-7%
Typical dimensions could
differ for some modules
1.
± 75 (
0. .0
25 69
(0 )
.1
0)
•
•
•
•
•
•
Temperature measurement
Liquid level or flow detection
Alarms and fire detectors
HVAC and Refrigeration
Fans
Air intake temperature
Electric pump module
Water Temperature
Evaporator probe
and more
0.75 (.030) ± 0.25 (.010)
•
•
•
•
1.75 (.069) ± 0.25 (0.10)
Marking
On packaging only
Operating temperature
-55°C to +150°C
Tolerance on Rn (25°C)
±1%, ±2%, ±3%, ±5%
Maximum dissipation at 25°C
Thermal dissipation factor
Thermal time constant
0.16 W
4 mW/°C
3 mW/°C
1.5 mW/°C
2 mW/°C
9s
8s
16 s
6s
Response time
20