Wraparound and Single-In-Line, Thin Film
Temperature Sensors
TFS
Vishay Sfernice
www.vishay.com For technical questions, contact: sfer@vishay.com Document Number: 60033
72 Revision: 25-Aug-09
Vacuum deposited nickel films are used to produce
temperature sensors with various characteristics. The small
size and small thermal mass of these devices result in a
quick response to changes in temperature.
FEATURES
•Conforms to the DIN 43760 specs in - 60 °C to
+ 180 °C temperature range
•TCR: 6180 ppm/°C (0 °C; + 100 °C)
(see note (1))
•Wide resistance range: 25 Ω to 2500 Ω, TFS-S
25 Ω to 250 Ω, TFS-W
•Packaging available: W/A, SIL
•
High stability ( and < 0.2 % 1000 h at Pn at 150 °C)
•Compliant to RoHS directive 2002/95/0EC
Note
(1) The ohmic value RT at temperature T (°C) depends on R0 (ohmic value at 0 °C) according to the following equation:
RT/R0 = 1 + 5.485 x 10-3 T + 6.65 x 10- 6 T2 + 2.805 × 10- 11 T4
Example: 0 °C < T < 100 °C
RT/R0 = 1.6180
TCR = ± 6180 ppm/°C
* Pb containing terminations are not RoHS compliant, exemptions may apply
** Please see document “Vishay Material Category Policy”: www.vishay.com/doc?99902
ΔR
R
--------ΔCT
CT
------------
STANDARD ELECTRICAL SPECIFICATIONS
TEST SPECIFICATIONS CONDITIONS
MATERIAL NICKEL
Resistance range 25 Ω to 2500 Ω on TFS-S/25R to 100R on TFS W0805
25R to 250R on TFS-W 1206
Absolute TCR (1) + 6180 ppm/°C 0 °C; 100 °C
Absolute tolerance ± 2 %, ± 1 %
Tolerance on temperature up to 0, 33 °C
Operating temperature range - 55 °C to + 125 °C
Storage temperature range - 55 °C to + 155 °C
Stability < 0.2 %; < 0.2 % 1000 h at Pn at + 150 °C
ΔR
R
--------ΔCT
CT
------------
MECHANICAL SPECIFICATIONS
Resistive element Nickel, around 1.5 µm thick
Substrate material 99.6 % alumina
Leads (TFS-S) Tin/silver plated on copper alloy
Terminals (TFS-W) Tin silver over nickel
TFS
Wraparound and Single-In-Line, Thin Film
Temperature Sensors Vishay Sfernice
Document Number: 60033 For technical questions, contact: sfer@vishay.com www.vishay.com
Revision: 25-Aug-09 73
DIMENSIONS
TFS-S Single-In-Line
A
F
C
B
D
E
G
A
B
C
TFS-W Chip for SMD
DIMENSION INCHES MILLIMETERS
A 0.200 3.17
B 0.200 5
C 0.200 5
D 0.025 0.63
E 0.100 2.54
F 0.020 0.50
G 0.010 0.25
0705 DIMENSION INCHES MILLIMETERS
A 0.075 1.90
B 0.050 1.25
C 0.020 0.50
1206 DIMENSION INCHES MILLIMETERS
A 0.125 3.20
B 0.063 1.60
C 0.027 0.70
PACKAGIN G
Waffle pack or tape and reel for TFS-W
Sticks or special packaging for TFS-S
HOW TO ORDER
Wraparound
MODEL STYLE SIZE OHMIC VALUE TOLERANCE
TFS W 0805
1206
In clear
U stands for
decimal point
F = 1 %
G = 2 %
SIL
MODEL STYLE OHMIC VALUE TOLERANCE
TFS S In clear
U stands for
decimal point
K stands for 1000
F = 1 %
G = 2 %
Historical Part Number:
TFS W 0805 56U 1 % e2
TFSS2K51 %e2
TFSW0805-56UF
TFSS - 2K5F
Document Number: 91000 www.vishay.com
Revision: 18-Jul-08 1
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