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MMQA_05 Datasheet, PDF (1/6 Pages) ON Semiconductor – SC−74 Quad Monolithic Common Anode Transient Voltage Suppressors for ESD Protection | |||
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MMQA Quad Common
Anode Series
Preferred Devices
SCâ74 Quad Monolithic
Common Anode
Transient Voltage Suppressors
for ESD Protection
http://onsemi.com
This quad monolithic silicon voltage suppressor is designed for
applications requiring transient overvoltage protection capability. It is
intended for use in voltage and ESD sensitive equipment such as
computers, printers, business machines, communication systems,
medical equipment, and other applications. Its quad junction common
anode design protects four separate lines using only one package.
These devices are ideal for situations where board space is at a
premium.
Features
⢠SCâ74 Package Allows Four Separate Unidirectional Configurations
⢠Peak Power â Min. 24 W @ 1.0 ms (Unidirectional),
per Figure 5 Waveform
⢠Peak Power â Min. 150 W @ 20 ms (Unidirectional),
per Figure 6 Waveform
⢠Maximum Clamping Voltage @ Peak Pulse Current
⢠Low Leakage < 2.0 mA
⢠ESD Rating of Class N (exceeding 16 kV) per the Human Body Model
⢠PbâFree Packages are Available
THERMAL CHARACTERISTICS (TA = 25°C unless otherwise noted)
Characteristic
Symbol Value Unit
Peak Power Dissipation @ 1.0 ms (Note 1)
@ TA ⤠25°C
Peak Power Dissipation @ 20 ms (Note 2)
@ TA ⤠25°C
Total Power Dissipation on FR-5 Board
(Note 3) @ TA = 25°C
Ppk
Ppk
°PD°
24
W
150
W
°225
1.8
mW°
mW/°C
°
Thermal Resistance from
JunctionâtoâAmbient
RqJA
556
°C/W
Total Power Dissipation on Alumina
Substrate (Note 4) @ TA = 25°C
Derate above 25°C
°PD°
°300
2.4
mW°
mW/°C
Thermal Resistance from
JunctionâtoâAmbient
RqJA
417
°C/W
Junction and Storage Temperature Range TJ, Tstg 塉 55 to
°C
+150°
Lead Solder Temperature â Maximum
(10 Second Duration)
TL
260
°C
SCâ74 QUAD TRANSIENT
VOLTAGE SUPPRESSOR
24 WATTS PEAK POWER
5.6 â 33 VOLTS
6
1
SCâ74
PLASTIC
CASE 318F
PIN ASSIGNMENT
1
6
2
5
3
4
PIN 1. CATHODE
2. ANODE
3. CATHODE
4. CATHODE
5. ANODE
6. CATHODE
MARKING DIAGRAM
xxx M G
G
xxx = Device Code
M
= Date Code*
G
= PbâFree Package
(Note: Microdot may be in either location)
*Date Code orientation may vary depending
upon manufacturing location.
DEVICE MARKING INFORMATION
See specific marking information in the device marking table
on page 5 of this data sheet.
ORDERING INFORMATION
See detailed ordering and shipping information in the table on
page 5 of this data sheet.
Preferred devices are recommended choices for future use
and best overall value.
© Semiconductor Components Industries, LLC, 2005
1
August, 2005 â Rev. 6
Publication Order Number:
MMQA/D
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