SC-74 Datasheet, PDF (1/6 Pages) ON Semiconductor – MMQA Quad Common Anode Series

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.
Specification 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 (T_A = 25°C unless otherwise noted)
Characteristic
Symbol Value Unit
Peak Power Dissipation @ 1.0 ms (Note 1)
@ T_A ≤ 25°C
Peak Power Dissipation @ 20 ms (Note 2) @
T_A ≤ 25°C
Total Power Dissipation on FR-5 Board
(Note 3) @ T_A = 25°C
Thermal Resistance from Junction−to−Ambi-
ent
P_pk
P_pk
°P_D°
R_qJA
24
W
150
W
°225
1.8
556
°mW°
mW/°C
°C/W
Total Power Dissipation on Alumina Sub-
strate (Note 4) @ T_A = 25°C
Derate above 25°C
°P_D°
°300 °mW
2.4 mW/°C
Thermal Resistance from Junction−to−Ambi-
ent
R_qJA
417 °C/W
Junction and Storage Temperature Range
T_J, T_stg °− 55 to °C
+150°
Lead Solder Temperature − Maximum (10
Second Duration)
T_L
260
°C
http://onsemi.com
SC−74 QUAD TRANSIENT
VOLTAGE SUPPRESSOR
24 WATTS PEAK POWER
5.6 − 33 VOLTS
6
1
SC−74
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
xxx = Device Code
M = Date Code
ORDERING INFORMATION
See detailed ordering and shipping information in the table on
page 5 of this data sheet.
DEVICE MARKING INFORMATION
See specific marking information in the device marking table
on page 5 of this data sheet.
Preferred devices are recommended choices for future use
and best overall value.
© Semiconductor Components Industries, LLC, 2004
1
April, 2004 − Rev. 4
Publication Order Number:
MMQA/D