PTCR Datasheet, PDF (1/2 Pages) List of Unclassifed Manufacturers – Surface Mounted Thermistors

Surface Mounted
Thermistors
PTCR Series
• TCR’s up to +3500 ppm
• Custom designs available
• Solder terminations have a nickel barrier layer
• Resistance range 10 ohms to 800 ohms
• Tolerances down to 2%
• Available in 0805 and 1206 sizes
Welwyn Components
Electrical Data
Commercial
Power rating at 70°C
Resistance range
Limiting element voltage
TCR -55°C to 155°C
Resistance tolerance at 20°C
Ambient temperature range
Values
Thermal impedance
watts
ohms
volts
ppm/°C
%
°C
ohms
°C/watt
PTCR 0805
0.1
10R to 400R
100
PTCR 1206
0.25
10R to 800R
200
2, 5, 10
-55 to 155
E24 & E96 preferred
360
200
Notes
See table below
Any value to order
For 10 devices
mounted on a
50 x 25mm p.c.b. area
Variation of TCR within Value Range
Value range (ohms)
10 to <25
25 to <50
50 to <100
10 to <200
200 to <400
400 to <800
TCR (ppm/°C)
3500 ± 10%
3100 ± 10%
2900 ± 10%
2700 ± 15%
2400 ± 15%
2200 ± 15%
10000
1000
100
10
1
-55
Physical Data
Dimensions (mm) and weight (g)
Style
L
W
T max
A
B*
Wt nom
0805 2.0 ± 0.3 1.25 ± 0.2 0.6 0.3 ± 0.15 0.9 min 0.009
1206 3.2 ± 0.4 1.6 ± 0.2 0.7 0.4 ± 0.2 1.7 min 0.0090
-15 25 65 105 145
Temperature °C
800R
10R
A
B
L
A
Wrap-around terminations
(3 faces)
T
W
*This dimension determines the number of conductors which may pass under the surface mounted device.
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
© Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK
Telephone: [phone] · Facsimile: [phone] · Email: [e-mail] · Website: www.welwyn-tt.com
A subsidiary of
TT electronics plc
Issue C · 08.04
37