MSC1380.PDF ISO 9001 CERTIFIED REV C 2/02/2000
8700 E. Thomas Road
Scottsdale, AZ 85251
Tel: (480) 941-6300
Fax: (480) 947-1503
DESCRIPTION
Various configurations of Schottky barrier's diodes in SOT-23 packages are
provided for general-purpose use in high-speed switching, mixers and
detector applications. They may also be used for signal terminations at the
board level. This helps maintain signal integrity and counteract the
transmission-line effects with (PC) board traces by clamping over/and
undershoot from signal reflections with the schottky-low-threshold voltages.
This type of termination also does not depend on matching the transmission
line characteristic impedance, making it particularly useful where line
impedance is unknown or a variable. This method of termination can
control distortions of clock, data, address, and control lines as well as
provides a stabilizing effect on signal jitter. It can also significantly reduce
power consumption compared to standard resistor- based termination methods.
FEATURES
• Protects from line to V
CC
and line to ground
• Clamps within one forward diode threshold voltage
• Low forward voltage and reverse recovery
characteristics
• Bidirectional-low-forward available with “-04” suffix (Figure 2)
• SOT-23 Surface Mount packaging for small foot print
MAXIMUM RATINGS
• Operating Temperatures: -55
0
C to +125
0
C
• Storage Temperature: -55
0
C to +150
0
C
• Power dissipation at T
amb
= 25
0
C is 200 mW
• Forward Continuous Current at T
amb
= 25
0
C is 200 mA
• Surge Forward Current At t
p
< 1 s, T
amb
= 25
0
C is 600 mA
ELECTRICAL CHARACTERISTICS PER DIODE @ 25
0
C Unless otherwise specified
Repetitive
Peak Reverse
Voltage
V
RRM
(VOLTS)
Reverse
Breakdown
Voltage
Tested with
10µA Pulse
V
(BR)R
(VOLTS)
Leakage Current
Pulse test
tp < 300µs @
For BAS40
V
R
= 30 V
For BAS70
V
R
= 5 0 V
I
R
(nA)
Forward Voltage Pulse Test
tp < 300µs
at I
F
= 1 mA
at I
F
= 40 mA
V
F
(mV)
Reverse
Recovery
Time from
I
F
= 10 mA
through
I
R
=10mA to
I
R
=1mA
t
rr
(ns)
Thermal
Resistance
Junction to
Ambient Air
R
th JA
(K/W)
Capacitance
At V
R
= 0V
F = 1 MHz
C
tot
pF
DEVICE
TYPE
DEVICE
MARKING
FIGURE
TYP MIN TYP MAX I
F
=1mA I
F
=1 5 m A I
F
=40 mA MAX MAX MAX
BAS40 43 1 40 40 20 100 380 1000 5 430 5
BAS40-04 44 2 40 40 20 100 380 1000 5 430 5
BAS40-05 45 3 40 40 20 100 380 1000 5 430 5
BAS40-06 46 4 40 40 20 100 380 1000 5 430 5
BAS70 73 1 70 70 20 100 410 1000 5 430 2
BAS70-04 74 2 70 70 20 100 410 1000 5 430 2
BAS70-05 75 3 70 70 20 100 410 1000 5 430 2
BAS70-06 76 4 70 70 20 100 410 1000 5 430 2
BAS40
and
BAS70
SCHOTTKYarray™ SERIES
PACKAGING
• Tape & Reel EIA Standard 481
• 7 inch reel 3,000 pieces
• 13 inch reel 10,000 pieces
MECHANICAL
• Molded SOT-23 Surface Mount
• Weight: .008 grams (approximate)
• Body Marked with device number