Date: 13th July 2010
New transils from ST for efficient surge
protection
ST Microelectronics has introduced the SMxJ and SMxT series
of transils to enable surge protection at high junction
temperature. There are six different series in the range,
with specified surge energy from 100W to 1500W (10/1000-microsecond
pulse).
The main features of the SM series are
1. ST says that the SM series include an 80% reduction in
leakage current compared to previous generations and also
specifies dynamic resistance for its new devices that allows
the clamping voltage to be calculated accurately so as to
improve protection and minimize risk of equipment failure.
2. ESD protection meeting IEC 61000-4-2 and MIL-STD-883G.
3. Specified with 8/20µs surge to meet IEC 61000-4-5
for electrical over-stress.
4. Leakage current specified at 85°C, meeting telecommunication
industry requirements
Devices Available:
Series
|
Standoff
voltage
|
Peak pulse
energy (10/1000µs)
|
Pulse energy
at Tjmax
|
Leakage current
@25°C
|
Package
|
SMX1J
|
7.5V
|
85W
|
78W
|
1.0uA
|
uQFN 2L (1.45
x 1.00mm)
|
SMCJ
|
5 – 188V
|
1500W
|
1250W
|
0.2uA
|
SMC (7.15 x
6.25mm)
|
SMBJ
|
5 – 188V
|
600W
|
515W
|
0.2uA
|
SMB (4.60 x
3.95mm)
|
SMAJ
|
5 – 188V
|
400W
|
270W
|
0.2uA
|
SMA (5.35 x
2.90mm)
|
SM15T
|
6.8 –
220V
|
1500W
|
1250W
|
0.2uA
|
SMC (7.15 x
6.25mm)
|
SM6T
|
6.8 –
220V
|
600W
|
515W
|
0.2uA
|
SMB (4.60 x
3.95mm)
|
Operating temperature range: -40°C to 150°C.
Price: The SMX1J starts at US$0.085 for 3000 units.
Availability: Now
For more information visit: www.st.com
|