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MMQA Datasheet(PDF) 1 Page - ON Semiconductor

Part No. MMQA
Description  SC−74 Quad Monolithic Common Anode Transient Voltage Suppressors for ESD Protection
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

MMQA Datasheet(HTML) 1 Page - ON Semiconductor

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© Semiconductor Components Industries, LLC, 2005
August, 2005 − Rev. 6
1
Publication Order Number:
MMQA/D
MMQA Quad Common
Anode Series
Preferred Devices
SC−74 Quad Monolithic
Common Anode
Transient Voltage Suppressors
for ESD Protection
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
SC−74 Package Allows Four Separate Unidirectional Configurations
Peak Power − Min. 24 W @ 1.0 ms (Unidirectional),
per Figure 5 Waveform
Peak Power − 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
Pb−Free 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
Ppk
24
W
Peak Power Dissipation @ 20
ms (Note 2)
@ TA ≤ 25°C
Ppk
150
W
Total Power Dissipation on FR-5 Board
(Note 3) @ TA = 25°C
°PD°
°225
1.8
mW
°
mW/
°C
°
Thermal Resistance from
Junction−to−Ambient
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
Junction−to−Ambient
RqJA
417
°C/W
Junction and Storage Temperature Range
TJ, Tstg
°− 55 to
+150
°
°C
Lead Solder Temperature − Maximum
(10 Second Duration)
TL
260
°C
SC−74 QUAD TRANSIENT
VOLTAGE SUPPRESSOR
24 WATTS PEAK POWER
5.6 − 33 VOLTS
Preferred devices are recommended choices for future use
and best overall value.
SC−74
PLASTIC
CASE 318F
PIN 1. CATHODE
2. ANODE
3. CATHODE
4. CATHODE
5. ANODE
6. CATHODE
1
2
3
6
5
4
MARKING DIAGRAM
See detailed ordering and shipping information in the table on
page 5 of this data sheet.
ORDERING INFORMATION
See specific marking information in the device marking table
on page 5 of this data sheet.
DEVICE MARKING INFORMATION
PIN ASSIGNMENT
http://onsemi.com
1
6
xxx M
G
G
xxx
= Device Code
M
= Date Code*
G
= Pb−Free Package
(Note: Microdot may be in either location)
*Date Code orientation may vary depending
upon manufacturing location.


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