ON Semiconductor 1SMA5.0AT3 Technical data
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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
Surmetic 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.
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 W @ 1 ms
• 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
• Pb−Free Packages are Available
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PLASTIC SURFACE MOUNT
ZENER OVERVOLTAGE
TRANSIENT SUPPRESSORS
5.0 − 78 V, 400 W PEAK POWER
CATHODE ANODE
SMA
CASE 403D
PLASTIC
MARKING DIAGRAM
Mechanical Characteristics
CASE:
Void-free, transfer-molded plastic
FINISH: All external surfaces are corrosion resistant and leads are
readily solderable
MAXIMUM CASE TEMPERATURE FOR SOLDERING PURPOSES:
260°C for 10 Seconds
POLARITY: Cathode indicated by molded polarity notch or polarity
band
MOUNTING POSITION: Any
xx
LLYWW
xx = Specific Device Code
LL = Assembly Location
Y = Year
WW = Work Week
ORDERING INFORMATION
Device Package Shipping
1SMAxxAT3 SMA 5000/Tape & Reel
1SMAxxAT3G SMA
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
Individual devices are listed on page 3 of this data sheet.
*Please see 1SMA10CAT3 to 1SMA78CAT3 for
Bidirectional devices.
= (See Table on Page
5000/Tape & Reel
(Pb−Free)
3)
†
Semiconductor Components Industries, LLC, 2004
April, 2004 − Rev. 6
1 Publication Order Number:
1SMA5.0AT3/D
1SMA5.0AT3 Series
MAXIMUM RATINGS
Rating Symbol Value Unit
Peak Power Dissipation (Note 1) @ TL = 25°C, Pulse Width = 1 ms P
DC Power Dissipation @ TL = 75°C
PK
P
D
Measured Zero Lead Length (Note 2)
Derate Above 75°C
Thermal Resistance from Junction to Lead
DC Power Dissipation (Note 3) @ TA = 25°C
R
JL
P
D
Derate Above 25°C
Thermal Resistance from Junction to Ambient
Forward Surge Current (Note 4) @ TA = 25°C I
Operating and Storage Temperature Range TJ, T
R
FSM
JA
stg
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously . If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
1. 10 X 1000 s, 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.
4. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, duty cycle = 4 pulses per minute maximum.
400 W
1.5
20
50
0.5
4.0
250
W
mW/°C
°C/W
W
mW/°C
°C/W
40 A
−65 to +150 °C
I
I
F
V
VCV
BR
RWM
I
V
R
F
I
T
I
PP
V
Uni−Directional TVS
5. 1/2 sine wave or equivalent, PW = 8.3 ms, non−repetitive
duty cycle.
ELECTRICAL CHARACTERISTICS
(TA = 25°C unless otherwise noted, VF = 3.5 V Max. @
I
= 30 A for all types) (Note 5)
F
Symbol
I
PP
V
C
V
RWM
I
R
V
BR
I
T
I
F
V
F
Maximum Reverse Peak Pulse Current
Clamping Voltage @ I
Working Peak Reverse Voltage
Maximum Reverse Leakage Current @ V
Breakdown Voltage @ I
Test Current
Forward Current
Forward Voltage @ I
Parameter
PP
T
F
RWM
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