PTFT
Vishay Dale
Linear PTC Thermistors, Surface Mount Chip
FEATURES
•
•
•
•
•
•
•
•
Solderable wraparound terminations.
Alumina substrate base with PTC thick film element.
0603, 0805, and 1206 sizes available.
Available in tape and reel packaging.
Standard tolerances:
±
5%,
±
10%.
Contact factory for non-standard tolerance.
Linear from - 55°C to + 125°C.
Maximum linear deviation:
±
0.01%/°C.
STANDARD ELECTRICAL SPECIFICATIONS
R
25
Ω
VALUE RANGE (5% and 10% TOLERANCE)**
TCR LOT
PPM
- 55
°
C to + 125
°
C
3500
3300
3100
2900
2700
2500
2300
TCR*
TOLERANCE
PPM
±
300
±
300
±
300
±
300
±
300
±
300
±
300
0603
MIN.
10
27
150
330
680
1.5K
6.8K
-
-
-
-
-
-
-
MAX.
22
120
270
560
1.2K
5.6K
10K
MIN.
10
47
220
390
820
1.8K
8.2K
0805
-
-
-
-
-
-
-
MAX.
39
180
330
680
1.5K
6.8K
10K
MIN.
10
56
270
560
1.2K
4.7K
10K
1206
-
-
-
-
-
-
-
MAX.
47
220
470
1K
3.9K
8.2K
15K
*Contact Vishay Dale if closer TCR lot tolerance is desired.
**Other R
25
values and tolerances are available upon request.
STANDARD RESISTANCE VALUES
10
12
15
18
22
27
33
39
47
56
68
82
100
120
150
180
220
270
330
390
470
560
680
820
1K
1.2K
1.5K
1.8K
2.2K
2.7K
3.3K
3.9K
4.7K
5.6K
6.8K
8.2K
10K
12K
15K
STANDARD TECHNICAL SPECIFICATIONS
PART NUMBER
PTFT 0603
PTFT 0805
PTFT 1206
1
Rated
POWER RATING
75mW
100mW
125mW
MAXIMUM WORKING VOLTAGE RCWV
1
30V DC
40V DC
50V DC
Continuous Working Voltage is maximum working voltage or square root of the power rating times resistance value, whichever is less.
ORDERING INFORMATION
PTFT
MODEL
1206
(E.I.A.) DIMENSION
L
LINEAR
1002
R
25
First 3 digits are
significant figures, 4th
digit is the multiplier
K
TOLERANCE
K =
±
10%
J =
±
5%
EXAMPLE: PTFT 1206 L 1002 K
www.vishay.com
40
For technical questions, contact thermistor1@vishay.com
Document Number 33014
Revision 29-Jul-02
PTFT
Linear PTC Thermistors, Surface Mount Chip
DIMENSIONS
in inches [millimeters]
A
D
Vishay Dale
B
E
C
PART NUMBER
PTFT0603
A
0.063
±
0.006
[1.60
±
0.15]
0.079
±
0.006
[2.00
±
0.15]
0.124
±
0.006
[3.15
±
0.15]
B
0.031 + 0.006 - 0.002
[0.80 + 0.15 - 0.05]
0.049
±
0.006
[1.25
±
0.15]
0.063
±
0.006
[1.60
±
0.15]
C
0.020
±
0.004
[0.50
±
0.10]
0.020
±
0.006
[0.50
±
0.15]
0.022
±
0.006
[0.56
±
0.15]
D
0.012
±
0.008
[0.30
±
0.20]
0.016
±
0.010
[0.40
±
0.25]
0.020
±
0.010
[0.50
±
0.25]
E
0.012
±
0.008
[0.30
±
0.20]
0.016
±
0.010
[0.40
±
0.25]
0.020
±
0.010
[0.50
±
0.25]
PTFT0805
PTFT1206
Overglaze
Thermistor
Alumina Substrate
Inner Electrode
Nickel Barrier
Solderable Coating
CONSTRUCTION
PERFORMANCE*
TEST***
MAXIMUM %
∆
R**
1K and Below
High Temperature Exposure
(100 hours @ 125°C)
Effects of Bonding
(10 sec. Solder dip @ 260°C)
Thermal Shock
(30 min. @ - 65°C, 30 min. @ 125°C, 5 cycles)
Low Temperature Operation
(Maximum Rated Power for 2 hours @ - 65°C)
Short Time Overload
(2.5 x RCWV for 5 seconds)
Moisture Resistance
(240 hours, 10 cycles)
Load Life
(1000 hours 70°C, Maximum Rated Power 1.5 hours ON, 5 hours OFF)
Load Humidity
(1000 hours @ 85°C, 85% RH, and 10% RCWV)
Solderability
(95% coverage P/F)
Leaching
(Physical Damage P/F)
1%
1%
1%
1%
1%
4%
2%
5%
P
P
Above 1K
1%
1%
5%
10%
20%
5%
10%
15%
P
P
*Environmental performance specifications use test procedures as outlined in MIL-R-23648D and MIL-STD-202.
**PTFT’s are ESD Sensitive.
***Test reading accuracy of
±
0.3%.
Document Number 33014
Revision 29-Jul-02
For technical questions, contact thermistor1@vishay.com
www.vishay.com
41
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