1SMA5.0AT3 Series
400 Watt Peak Power Zener
Transient Voltage Suppressors
Unidirectional*
The SMA series is designed to protect voltage sensitive
components from high voltage, high energy transients. They have
excellent clamping capability, high surge capability, low zener
impedance and fast response time. The SMA series is supplied in
ON Semiconductor’s exclusive, cost-effective, highly reliable
Surmetict package and is ideally suited for use in communication
systems, automotive, numerical controls, process controls, medical
equipment, business machines, power supplies and many other
industrial/consumer applications.
http://onsemi.com
PLASTIC SURFACE MOUNT
ZENER OVERVOLTAGE
TRANSIENT SUPPRESSORS
5.0–78 VOLTS VR
400 WATTS PEAK POWER
Specification Features:
• Working Peak Reverse Voltage Range – 5.0 V to 78 V
• Standard Zener Breakdown Voltage Range – 6.7 V to 91.25 V
• Peak Power – 400 Watts @ 1 ms
CATHODE
ANODE
• ESD Rating of Class 3 (> 16 KV) per Human Body Model
• Response Time is Typically < 1 ns
• Flat Handling Surface for Accurate Placement
• Package Design for Top Slide or Bottom Circuit Board Mounting
• Low Profile Package
SMA
Mechanical Characteristics:
CASE 403B
PLASTIC
CASE: Void-free, transfer-molded plastic
FINISH: All external surfaces are corrosion resistant and leads are
readily solderable
MARKING DIAGRAM
MAXIMUM CASE TEMPERATURE FOR SOLDERING PURPOSES:
260°C for 10 Seconds
POLARITY: Cathode indicated by molded polarity notch or polarity
band
xx
LLYWW
MOUNTING POSITION: Any
xx
= Specific Device Code
= (See Table Next Page)
= Assembly Location
= Year
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
LL
Y
WW
Peak Power Dissipation (Note 1.)
P
PK
400
W
= Work Week
@ T = 25°C, Pulse Width = 1 ms
L
DC Power Dissipation @ T = 75°C
P
D
1.5
W
L
ORDERING INFORMATION
Measured Zero Lead Length (Note 2.)
Derate Above 75°C
Thermal Resistance from Junction to Lead
20
50
mW/°C
°C/W
{
Device
Package
Shipping
5000/Tape & Reel
R
q
JL
DC Power Dissipation (Note 3.) @ T = 25°C
P
0.5
W
1SMAxxAT3
SMA
A
D
Derate Above 25°C
Thermal Resistance from Junction
to Ambient
4.0
250
mW/°C
°C/W
R
q
*Please see 1SMA10CAT3 to 1SMA78CAT3 for
Bidirectional devices.
JA
Operating and Storage
Temperature Range
T , T
J
–65 to
+150
°C
stg
†The “T3” suffix refers to a 13 inch reel.
1. 10 X 1000 ms, non–repetitive
2. 1″ square copper pad, FR–4 board
3. FR–4 board, using ON Semiconductor minimum recommended footprint, as
shown in 403B case outline dimensions spec.
Semiconductor Components Industries, LLC, 2001
1
Publication Order Number:
March, 2001 – Rev. 3
1SMA5.0AT3/D