SMAJ12A Littelfuse Inc, SMAJ12A Datasheet

DIODE TVS 12V 400W UNI 5% SMA

SMAJ12A

Manufacturer Part Number
SMAJ12A
Description
DIODE TVS 12V 400W UNI 5% SMA
Manufacturer
Littelfuse Inc
Series
SMAJr
Datasheet

Specifications of SMAJ12A

Package / Case
DO-214AC, SMA
Voltage - Reverse Standoff (typ)
12V
Voltage - Breakdown
13.3V
Power (watts)
400W
Polarization
Unidirectional
Mounting Type
Surface Mount
Polarity
Unidirectional
Channels
1 Channel
Clamping Voltage
19.9 V
Operating Voltage
12 V
Breakdown Voltage
13.3 V
Termination Style
SMD/SMT
Peak Surge Current
20.1 A
Peak Pulse Power Dissipation
400 W
Maximum Operating Temperature
+ 150 C
Minimum Operating Temperature
- 65 C
Dimensions
2.79 mm W x 4.5 mm L x 2.29 mm H
Lead Free Status / RoHS Status
Lead free by exemption / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free by exemption / RoHS Compliant
Other names
SMAJ12ALFTR

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0
Notes:
1. Non-repetitive current pulse, per Fig.3 and derated above T
2. Mounted on 5.0x5.0mm copper pad to each terminal.
3. Measured on 8.3ms single half sine wave or equivalent square wave for unidirectional
4. V
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.Littelfuse.com/series/SMAJ.html for current information.
Agency Approvals
Maximum Ratings and Thermal Characteristics
(T
Parameter
Peak Pulse Power Dissipation at
T
(Fig.1)(Note 1), (Note 2)
Power Dissipation on infinite heat
sink at T
Peak Forward Surge Current, 8.3ms
Single Half Sine Wave (Note 3)
Maximum Instantaneous Forward
Voltage at 25A for Unidirectional
only (Note 4)
Operating Junction and Storage
Temperature Range
Typical Thermal Resistance Junction
to Lead
Typical Thermal Resistance Junction
to Ambient
device only.
AGENCY
A
F
=25ºC by 10x1000μs waveform
A
< 3.5V for V
RoHS
=25
O
A
C unless otherwise noted)
=50
BR
O
<
_
C
SMAJ Series
200V and V
F
< 6.5V for V
AGENCY FILE NUMBER
BR
>
_
E230531
201V.
Symbol
T
P
J
P
I
, T
R
R
M(AV)
FSM
V
PPM
uJL
uJA
F
STG
A
=25ºC per Fig. 2.
Transient Voltage Suppression Diodes
Surface Mount – 400W > SMAJ series
-65 to 150
3.5V/6.5
Value
400
120
3.3
40
30
°C/W
°C/W
Unit
Revision: January 09, 2009
W
W
°C
A
V
7
Description
The SMAJ series is designed specifically to protect
sensitive electronic equipment from voltage transients
induced by lightning and other transient voltage events.
Features
Applications
TVS devices are ideal for the protection of I/O Interfaces,
V
Computer, Industrial and Consumer electronic applications.
CC
applications to optimize
board space
capability
capability at 10 x 1000μs
waveform, repetition rate
(duty cycle): 0.01%
bus and other vulnerable circuits used in Telecom,
above 12V
temperature coefficient
ΔV
typically less than 1.0ps
from 0 Volts to V
soldering: 260°C/40
seconds at terminals
Underwriters Laboratory
Flammability 94V-O
Plated
BR
= 0.1% x V
R
less than 1μA
BR
@25°C x ΔT
BR
SMAJ Series
min

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SMAJ12A Summary of contents

Page 1

SMAJ Series RoHS Agency Approvals AGENCY AGENCY FILE NUMBER E230531 Maximum Ratings and Thermal Characteristics (T = unless otherwise noted) A Parameter Symbol Peak Pulse Power Dissipation at T =25ºC by 10x1000μs waveform P A PPM (Fig.1)(Note 1), ...

Page 2

... SMAJ7 .0CA AM WM SMAJ7 .5A SMAJ7 .5CA AP WP SMAJ8.0A SMAJ8.0CA AR WR SMAJ8.5A SMAJ8.5CA AT WT SMAJ9.0A SMAJ9.0CA AV WV SMAJ10A SMAJ10CA AX WX SMAJ11A SMAJ11CA AZ WZ SMAJ12A SMAJ12CA BE XE SMAJ13A SMAJ13CA BG XG SMAJ14A SMAJ14CA BK XK SMAJ15A SMAJ15CA BM XM SMAJ16A SMAJ16CA BP XP SMAJ17A SMAJ17CA BR XR SMAJ18A SMAJ18CA BT ...

Page 3

Ratings and Characteristic Curves (T =25°C unless otherwise noted) A Figure 1 - Peak Pulse Power Rating Curve 10 1 0.2x0.2" (5.0x5.0mm) Copper Pad Area 0.1 0.000001 0.00001 0.0001 t -Pulse Width (sec.) d Figure 3 - Pulse Waveform 150 ...

Page 4

Transient Voltage Suppression Diodes Surface Mount – 400W > SMAJ series Soldering Parameters Reflow Condition - Temperature Min (T ) s(min) Pre Heat - Temperature Max (T ) s(max) - Time (min to max Average ramp up ...

Page 5

Part Numbering System SMAJ XXX VOLTAGE TOLERANCE BI-DIRECTIONAL VOLTAGE SERIES Packaging Component Part number Quantity Package SMAJxxxXX DO-214AC 5000 ©2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to http://www.Littelfuse.com/series/SMAJ.html for current information. Transient ...

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