Anti Sulphur
Chip Resistors
ASC Series
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
General Note
TT electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT electronics’ own data and is considered accurate at time of going to print.
© TT electronics plc
07. 12
· Special construction resists sulphide growth
· Withstands sulphur bearing fume environment
· Tested to ASTM-B809 (“Flowers-of-Sulphur”)
· Suitable for industrial, automotive and roadside uses
· RoHS compliant matt tin finish terminations
Dimensions (mm) and weight (mg)
L W T C A Wt. nom.
0402 1.0 ±0.05 0.5 ±0.05 0.35 ±0.05 0.2 ±0.1 0.2 ±0.1 0.62
0603 1.6 ±0.1 0.8 ±0.1 0.45 ±0.1 0.3 ±0.2 0.3 ±0.2 2.04
0805 2.0 ±0.1 1.25 ±0.1 0.5 ±0.1 0.35 ±0.2 0.4 ±0.2 4.37
1206 3.1 ±0.1 1.55 ±0.1
0.55 ±0.1
0.5 ±0.25
0.5 ±0.2
8.95
1210 3.2 ±0.2 2.6 ±0.15 16.0
2010 5.0 ±0.2 2.5 ±0.15 0.6 ±0.25 24.2
2512 6.35 ±0.2 3.2 ±0.15 39.4
0402 0603 0805 1206 1210 2010 2512
Power rating @ 70ºC watts 0.063 0.1 0.125 0.25 0.33 0.75 1
Resistance range ohms 1R0 - 10M
Current Rating (zero ohm jumper) amps 1 1 2 2 2.5 3.5 4
Limiting element voltage volts 50 150 200 250
TCR ppm/ºC <10R: 200 10R to 1M0: 100 >1M0: 200
Resistance tolerance % 1
Standard values E24, E96
Ambient temperature range ºC -55 to +155
Construction
Conductors, resistive element, glass inner protection and epoxy outer protection are applied to a 96% alumina substrate. The
chips are supplied with wrap-around terminations suitable for soldering. The terminations have an electroplated nickel barrier and
100% matt tin finish.
Marking
Sizes larger than 0603 are individually marked with 4 digits. The first three digits are the significant figures and the fourth defines
the number of added zeros.
Size 0603, E24 values are marked with 3 digits. The first two digits are the significant figures and the third defines the number of
added zeros.
Size 0603, E96 values are marked with a standard 3 digit EIA96 code.
Size 0402 has no marking.
The body protection and marking are resistant to all normal cleaning solvents suitable for printed circuits.
Electrical Data
Physical Data
T
W
A
A
L
Wrap-around terminations
(3 faces)