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1N6509
Isolated Diode Array with
HiRel MQ, MX, MV, and MSP Screening Options
SCOTTSDALE DIVISION
APPEARANCE
These low capacitance diode arrays are multiple, discrete, isolated junctions fabricated
by a planar process and mounted in a 14-PIN ceramic DIP package for use as steering
diodes protecting up to eight I/O ports from ESD, EFT, or surge by directing them to
the positive side of the power supply line and to ground (see Figure 1). An external
TVS diode may be added between the positive supply line and ground to prevent overvoltage on the supply rail. They may also be used in fast switching core-driver
applications. This includes computers and peripheral equipment such as magnetic
cores, thin-film memories, plated-wire memories, etc., as well as decoding or encoding
applications. These arrays offer many advantages of integrated circuits such as highdensity packaging and improved reliability. This is a result of fewer pick and place
operations, smaller footprint, smaller weight, and elimination of various discrete
packages that may not be as user friendly in PC board mounting.
14-PIN Ceramic DIP
WWW . Microsemi .C OM
DESCRIPTION
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
FEATURES
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APPLICATIONS / BENEFITS
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Hermetic Ceramic Package
Isolated Diodes To Eliminate Cross-Talk Voltages
High Breakdown Voltage VBR > 60 V at 10 µA
Low Leakage IR< 100nA at 40 V
Low Capacitance C < 8.0 pF
Options for screening in accordance with MIL-PRF19500/474 for JAN, JANTX, JANTXV, and JANS are
available by adding MQ, MX, MV, or MSP prefixes
respectively to part numbers. For example, designate
MX1N6509 for a JANTX screen.
MAXIMUM RATINGS
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MECHANICAL AND PACKAGING
Reverse Breakdown Voltage of 60 Vdc (Note 1 & 2)
Continuous Forward Current of 300 mA dc (Note 1 & 3)
Peak Surge Current (tp=1/120 s) of 500 mA dc (Note 1)
400 mW Power Dissipation per Junction @ 25oC
600 mW Power Dissipation per Package @ 25oC (Note 4)
Operating Junction Temperature range –65 to +150oC
Storage Temperature range of –65 to +200oC
NOTE 1:
NOTE 2:
NOTE 3:
NOTE 4:
High Frequency Data Lines
RS-232 & RS-422 Interface Networks
Ethernet: 10 Base T
Computer I/O Ports
LAN
Switching Core Drivers
IEC 61000-4 Compatible (see circuit in figure 1)
61000-4-2 ESD: Air 15 kV, contact 8 kW
61000-4-4 (EFT): 40 A – 5/50 ns
61000-4-5 (surge): 12 A 8/20 µs
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14-PIN Ceramic DIP
Weight 2.05 grams (approximate)
Marking: Logo, part number, date code
Pin #1 to the left of the indent on top of package
Carrier tubes; 25 pcs (standard)
Each Diode
Pulsed: PW = 100 ms max; duty cycle <20%
o
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Derate at 2.4 mA/ C above +25 C
o
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Derate at 4.8 mW/ C above +25 C
ELECTRICAL CHARACTERISTICS (Per Diode) @ 25oC unless otherwise specified
1N6509
MAXIMUM
FORWARD
VOLTAGE
VF2
IF = 500 mA
(Note 1)
MAXIMUM
REVERSE
CURRENT
MAXIMUM
CAPACITANCE
(PIN TO PIN)
IR1
VR = 40 V
VR = 0 V
F = 1 MHz
Ct
MAXIMUM
FORWARD
RECOVERY TIME
tfr
IF = 500 mA
MAXIMUM
REVERSE
RECOVERY TIME
trr
IF = IR = 200 mA
irr = 20 mA
RL = 100 ohms
V
V
µA
pF
ns
ns
1
1.5
0.1
8.0
40
20
NOTE 1: Pulsed: PW = 300 µs +/- 50 µs, duty cycle <2%, 90 µs after leading edge.
Copyright  2003
5-03-2004 REV A
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 1
1N6509
PART
NUMBER
MAXIMUM
FORWARD
VOLTAGE
VF1
IF = 100 mA
(Note 1)
1N6509
SCOTTSDALE DIVISION
Isolated Diode Array with
HiRel MQ, MX, MV, and MSP Screening Options
WWW . Microsemi .C OM
SYMBOLS & DEFINITIONS
Symbol
VBR
VF
DEFINITION
Minimum Breakdown Voltage: The minimum voltage the device will exhibit at a specified current.
Maximum Forward Voltage: The maximum forward voltage the device will exhibit at a specified current.
Maximum Leakage Current: The maximum leakage current that will flow at the specified voltage and
temperature.
Capacitance: The capacitance of the TVS as defined @ 0 volts at a frequency of 1 MHz and stated in
picofarads.
IR
Ct
SCHEMATIC
PACKAGE DIMENSIONS
CIRCUIT
Supply rail (+VCC)
I/O Port
1N6509
6509
GND (or -VCC)
Steering Diode Application
FIGURE 1
Copyright  2003
5-03-2004 REV A
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 2