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.
BAS40
and
BAS70
SCHOTTKYarray™ SERIES
FEATURES
• Protects from line to VCC and line to ground
• Clamps within one forward diode threshold voltage
• Low forward voltage and reverse recovery
characteristics
PACKAGING
• Tape & Reel EIA Standard 481
• 7 inch reel 3,000 pieces
• 13 inch reel 10,000 pieces
• Bidirectional-low-forward available with “-04” suffix (Figure 2)
• SOT-23 Surface Mount packaging for small foot print
MAXIMUM RATINGS
• Operating Temperatures: -550C to +1250C
• Storage Temperature: -55
• Power dissipation at T
• Forward Continuous Current at T
• Surge Forward Current At t
0
C to +1500C
= 250C is 200 mW
amb
p
= 250C is 200 mA
amb
< 1 s, T
amb
= 250C is 600 mA
MECHANICAL
• Molded SOT-23 Surface Mount
• Weight: .008 grams (approximate)
• Body Marked with device number
ELECTRICAL CHARACTERISTICS PER DIODE @ 250C Unless otherwise specified
(BR)R
Leakage Current
Pulse test
tp < 300µs @
For BAS40
= 30 V
V
R
For BAS70
V
= 50 V
R
I
(nA)
R
Forward Voltage Pulse Test
tp < 300µs
= 1 mA
at I
F
= 40 mA
at I
F
VF (mV)
=1mA IF=15mA
F
I
=40mA
F
Reverse
Recovery
Time from
= 10 mA
I
F
through
=10mA to
I
R
=1mA
I
R
t
(ns)
rr
MAX MAX MAX
Thermal
Resistance
Junction to
Ambient Air
(K/W)
R
thJA
Capacitance
Repetitive
Peak Reverse
Voltage
DEVICE
TYPE
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
DEVICE
MARKING
FIGURE
V
RRM
(VOLTS)
TYP MIN TYP MAX I
Reverse
Breakdown
Voltage
Tested with
10µA Pulse
V
(VOLTS)
At VR = 0V
F = 1 MHz
C
tot
pF
MSC1380.PDF ISO 9001 CERTIFIED REV C 2/02/2000
BAS40 and BAS70
Figure 1 Figure 2 Figure 3 Figure 4
PACKAGE OUTLINE
PAD DIMENSIONS
MSC1380.PDF ISO 9001 CERTIFIED REV C 2/02/2000