SMAJ28A Taiwan Semiconductor, SMAJ28A Datasheet

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SMAJ28A

Manufacturer Part Number
SMAJ28A
Description
TVS Diodes - Transient Voltage Suppressors 28V 300W 5% Uni
Manufacturer
Taiwan Semiconductor
Datasheet

Specifications of SMAJ28A

Polarity
Unidirectional
Channels
1 Channel
Clamping Voltage
45.4 V
Operating Voltage
28 V
Package / Case
DO-214AC
Breakdown Voltage
31.1 V
Peak Surge Current
40 A
Peak Pulse Power Dissipation
400 W (Min)
Maximum Operating Temperature
+ 150 C
Minimum Operating Temperature
- 55 C
Dimensions
2.83(Max) mm W x 4.6(Max) mm L
Lead Free Status / Rohs Status
 Details
Other names
R2

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Features
Mechanical Data
Maximum Ratings and Electrical Characteristics
Rating at 25
Type Number
P
Steady State Power Dissipation
Peak Forward Surge Current, 8.3 ms Single Half
Sine-wave Superimposed on Rated Load
(JEDEC method) (Note 2, 3)
Maximum Instantaneous Forward Voltage at 25.0A for
Unidirectional Only
Operating and Storage Temperature Range
Notes:
Devices for Bipolar Applications
eak
P
For surface mounted application
Low profile package
Built-in strain relief
Glass passivated junction
Excellent clamping capability
Fast response time: Typically less than 1.0ps
from 0 volt to BV min.
Typical I
High temperature soldering guaranteed:
260
Plastic material used carries Underwriters
Laboratory Flammability Classification 94V-0
400 watts peak pulse power capability with a 10
x 1000 us waveform (300W above 78V).
Case: Molded plastic
Terminals: Pure tin plated lead free,
Polarity: Indicated by cathode band
Standard packaging: 12mm tape (EIA STD
RS-481)
Weight: 0.064 gram
ower
o
C / 10 seconds at terminals
1. Non-repetitive Current Pulse Per Fig. 3 and Derated above T
2. Mounted on 10mm
3. 8.3ms Single Half Sine-wave or Equivalent Square Wave, Duty Cycle=4 Pulses Per
1. For Bidrectional Use C or CA Suffix for Types SMAJ5.0 through Types SMAJ188.
2. Electrical Characteristics Apply in Both Directions.
D
issipation at
Minute Maximum.
R
O
C
less than 1µA above 10V
ambient temperature unless otherwise specified.
T
A
=25
o
2
C, Tp=1ms(
(.035 mm Thick) Copper Pads to Each Terminal.
N
ote 1)
- 526 -
Symbol
T
J
I
P
, T
Pd
FSM
V
PK
F
STG
Dimensions in inches and (millimeters)
Transient Voltage Suppressor
A
=25
SMA/DO-214AC
Minimum 400
400 Watts Surface Mount
o
-55 to + 150
C Per Fig. 2.
Value
SMAJ SERIES
40.0
3.5
1
Watts
Watts
Amps
Units
Volts
Version: C08
o
C

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SMAJ28A Summary of contents

Page 1

Features For surface mounted application Low profile package Built-in strain relief Glass passivated junction Excellent clamping capability Fast response time: Typically less than 1.0ps from 0 volt to BV min. Typical I less than 1µA above 10V R High temperature ...

Page 2

RATINGS AND CHARACTERISTIC CURVES (SMAJ SERIES) FIG.1- PEAK PULSE POWER RATING CURVE 100 0.2" sq 5.0mm COPPER PAD AREAS 0.1 100 0.1 s 1.0 s td. PULSE WIDTH, sec. FIG.3- CLAMPING POWER PULSE WAVEFORM ...

Page 3

... SMAJ18A BT 18 SMAJ20 BU 20 SMAJ20A BV 20 SMAJ22 BW 22 SMAJ22A BX 22 SMAJ24 BY 24 SMAJ24A BZ 24 SMAJ26 CD 26 SMAJ26A CE 26 SMAJ28 CF 28 SMAJ28A CG 28 SMAJ30 CH 30 SMAJ30A CK 30 SMAJ33 CL 33 SMAJ33A CM 33 SMAJ36 CN 36 SMAJ36A CP 36 SMAJ40 CQ 40 SMAJ40A CR 40 SMAJ43 CS 43 SMAJ43A ...

Page 4

ELECTRICAL CHARACTERISTICS (TA=25 Device Working Peak Device Marking Reverse Code Voltage V (Volts) WM SMAJ45 CU 45 SMAJ45A CV 45 SMAJ48 CW 48 SMAJ48A CX 48 SMAJ51 CY 51 SMAJ51A SMAJ54 RE 54 SMAJ54A SMAJ58 RF ...

Page 5

APPLICATION NOTES: Recommended Pad Layout The pad dimensions should be 0.010" longer than the contact size in the lead axis. This allows a solder fillet to form, see figure below. Contact factory for soldering methods. Dimensions in inches and (millimeters) ...

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