BAS40

andBAS70SCHOTTKYarray™ SERIESDESCRIPTION

Various configurations of Schottky barrier's diodes in SOT-23 packages areprovided for general-purpose use in high-speed switching, mixers anddetector applications. They may also be used for signal terminations at theboard level. This helps maintain signal integrity and counteract thetransmission-line effects with (PC) board traces by clamping over/andundershoot from signal reflections with the schottky-low-threshold voltages.This type of termination also does not depend on matching the transmissionline characteristic impedance, making it particularly useful where lineimpedance is unknown or a variable. This method of termination cancontrol distortions of clock, data, address, and control lines as well asprovides a stabilizing effect on signal jitter. It can also significantly reducepower consumption compared to standard resistor- based termination methods.

FEATURES

• Protects from line to VCC 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

PACKAGING• Tape & Reel EIA Standard 481• 7 inch reel 3,000 pieces• 13 inch reel 10,000 piecesMAXIMUM RATINGS

• Operating Temperatures: -55C to +125C• Storage Temperature: -550C to +1500C• Power dissipation at Tamb = 250C is 200 mW

• Forward Continuous Current at Tamb = 250C is 200 mA• Surge Forward Current At tp < 1 s, Tamb = 250C is 600 mA

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MECHANICAL• Molded SOT-23 Surface Mount• Weight: .008 grams (approximate)• Body Marked with device numberELECTRICAL CHARACTERISTICS PER DIODE @ 250C Unless otherwise specified

RepetitivePeak ReverseVoltage

DEVICETYPE

DEVICE

FIGURE

MARKING

VRRM(VOLTS)

ReverseBreakdownVoltageTested with10µA Pulse

Leakage CurrentPulse testtp < 300µs @For BAS40VR = 30 VFor BAS70VR = 50 VIR (nA)

Forward Voltage Pulse Test

tp < 300µsat IF = 1 mAat IF = 40 mA

ReverseRecoveryTime fromIF = 10 mAthroughIR=10mA toIR=1mAtrr (ns)

ThermalResistanceJunction toAmbient Air

CapacitanceAt VR = 0VF = 1 MHz

Ctot

V(BR)R(VOLTS)

VF (mV)

RthJA (K/W)pF

TYP MIN TYP MAX IF=1mA IF=15mA IF=40mA MAX MAX MAXBAS40 43 1 40 40 20 100 380 1000 5 430 5BAS40-04 44 2 40 40 20 100 380 1000 5 430 5BAS40-05 45 3 40 40 20 100 380 1000 5 430 5BAS40-06 46 4 40 40 20 100 380 1000 5 430 5BAS70 73 1 70 70 20 100 410 1000 5 430 2BAS70-04 74 2 70 70 20 100 410 1000 5 430 2BAS70-05 75 3 70 70 20 100 410 1000 5 430 2BAS70-06 76 4 70 70 20 100 410 1000 5 430 2MSC1380.PDF ISO 9001 CERTIFIED

REV C 2/02/2000

BAS40 and BAS70

Figure 1 Figure 2 Figure 3 Figure 4PACKAGE OUTLINEPAD DIMENSIONSMSC1380.PDF ISO 9001 CERTIFIED

REV C 2/02/2000