SMAJ 5.0 ~ 170A
V
BR
: 6.8 - 200 Volts
P
PK
: 400 Watts
FEATURES :
* 400W surge capability at 1ms
* Excellent clamping capability
* Low zener impedance
* Fast response time : typically less
then 1.0 ps from 0 volt to V
BR(min.)
* Typical I
R
less then 1
µ
A above 10V
SURFACE MOUNT TRANSIENT
VOLTAGE SUPPRESSOR
SMA (DO-214AC)
1.1
±
0.3
5.0
±
0.15
4.5
±
0.15
1.2
±
0.2
2.6
±
0.15
2.1
±
0.2
0.2
±
0.07
MECHANICAL DATA
* Case : SMA Molded plastic
* Epoxy : UL94V-O rate flame retardant
* Lead : Lead Formed for Surface Mount
* Polarity : Color band denotes cathode end except Bipolar.
* Mounting position : Any
* Weight : 0.064 grams
2.0
±
0.2
Dimensions in millimeter
MAXIMUM RATINGS
Rating at Ta = 25
°
C ambient temperature unless otherwise specified.
Rating
Peak Pulse Power Dissipation (Note1,2,5) Fig. 4
Peak Forward Surge Current per Fig. 5 (Note 3)
Peak Pulse Current on 10/1000
µ
s
waveform (Note 1, Fig. 1)
Steady State Power Dissipation (Note 4)
Operating Junction and Storage Temperature Range
Notes :
Symbol
P
PPM
I
FSM
I
PPM
P
M(AV)
T
J,
T
STG
Value
Minimum 400
40
See Table
1.0
- 55 to + 150
Units
Watts
Amps
Amps
Watt
°
C
(1) Non-repetitive Current pulse, per Fig. 3 and derated above Ta = 25
°
C per Fig. 1
(2) Mounted on 5.0mm (0.013mm) copper pads to each terminal.
(3) 8.3ms single half sine-wave duty cycle=4 pulses per minutes maximum.
(4) Lead temperature at T
L
=75
°
C
(5) Peak pulse power waveform is 10/1000µs.
2
UPDATE : SEPTEMBER 5, 2000
RATING AND CHARACTERISTIC CURVES ( SMAJ5.0 - SMAJ170A )
FIG.1 - PULSE DERATING CURVE
6,000
120
FIG.2 - TYPICAL JUNCTION CAPACITANCE
T
J
= 25
°
C
f = 1.0 MHz
Vsig = 50 mV
P-P
1,000
PEAK PULSE POWER OR CURRENT
DERATING IN PERCENTAGE
100
80
60
C
J
, CAPACITANCE, pF
V
R
Measured @
Zero Basic (0V)
100
40
20
0
0
25
50
75
100
125
150
175
Measured at
Stand-off Voltage
Voltage V
WM
10
1
2
10
20
100
200
Ta, AMBIENT TEMPERATURE, (
°
C)
V
BR
, BREAKDOWN VOLTAGE,VOLTS
FIG.3 - PULSE WAVEFORM
I
PPM
, PEAK PULSE CURRENT, %
tf = 10µs
100
Peak Value
I
PPM
Ta=25
°
C
Pulse Width (td) is defined
as that point where the peak
current decays to 50%
of I
PPM
100
FIG.4 - PEAK PULSE POWER RATING CURVE
P
PPM
,PEAK POWER (kW)
NON-REPETITIVE
PULSE WAVEFORM
SHOW IN FIG. 3 ,Ta=25
°C
10
50
Half Value - I
PPM
2
1.0
td
0
0
1.0
2.0
3.0
4.0
0.1
0.1
µ
s
1.0
µ
s
10
µ
s
100
µ
s
1.0ms
10ms
t, TIME(ms)
td, PULSE WIDTH, SEC
FIG.5 - MAXIMUM NON-REPETITIVE PEAK FORWARD
SURGE CURRENT
50
PEAK FORWARD CURRENT,
AMPERES
40
T
J
= T
J
max
8.3 ms Single half sine-wave
JEDEC Method
30
20
10
0
1
5
10
50
100
NUMBER OF CYCLES AT 60 Hz
Embedded System
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