SMAJ530
THRU
SMAJ550
Surface Mount TransZorb
TM
Transient Voltage Suppressors
Voltage Range
530 to 550 Volts
300 Watts Peak Power
Features
a
a
a
a
a
a
Plastic package has Underwriters Laboratory Flammability
Classification 94V-0
Protects power IC controllers such as TOPSwitch®
Excellent clamping capability
Glass passivated junction
High temperature soldering guaranteed: 260+ / 10 seconds
at terminals
Available in unidirectional only
.062(1.58)
.056(1.43)
SMA/DO-214AC
.111(2.83)
.102(2.58)
.187(4.75)
.167(4.25)
Mechanical Data
a
a
a
a
Case: JEDEC DO-201AC molded plastic body over
passivated junction
Terminals: Solder plated, solderable per MIL-STD-
750, Method 2026
Polarity: The band denotes the cathode, which is
positive with respect to the anode under normal TVS
operation
Mounting position: Any
Weight: 0.002 ounce, 0.064 gram
Dimensions in inches and (millimeters)
Unless Otherwise Noted.
.103(2.61)
.078(1.99)
.012(.31)
.006(.15)
.008(.20)
.004(.10)
.056(1.41)
.035(0.90)
.210(5.33)
.195(4.95)
a
Maximum Ratings and Thermal Characteristics
TA= 25+
Type Number
Device Marking Code
Peak Pulse Power Dissipation
(
N
ote 1, 2 Fig. 1)
Symbol
P
PPM
P
M(AV)
V
WM
R JL
R JA
T
J
, T
STG
Symbol
V
(BR)
V
C
I
D
C
J
Steady State Power Dissipation at T
L
=75 C
Stand-off Voltage
Typical Thermal resistance Junction-to-lead
Typical Thermal Resistance Junction-to-ambient
Operating and Storage Temperature Range
O
SMAJ530 SMAJ550
HD
SB
Minimum 300
1.0
477
495
27
75
-55 to + 150
SMAJ530 SMAJ550
530
550
760
5.0
650
90
7.5
Units
Watts
Watts
V
+/W
+/W
+
Units
V
V
uA
mV+
pF
Electrical Characteristics
Type Number
Minimum Breakdown Voltage at 100uA
Max. Clamping Voltage at 400mA,
10/1000uS-Waveform
Maximum DC Reverse Leakage Current at
V
WM
Typical Temperature Coefficient of V
BR
Typical Capacitance (Note 3) at
0V
200V
Notes: 1. Non Repetitive Current Pulse per Fig. 3 and Derated above 25
O
C per Fig. 2.
2. Peak Pulse Power Waveform is 10 / 1000uS.
3. Measured at 1MHz.
RATINGS AND CHARACTERISTIC CURVES (SMAJ530 THRU SMAJ550)
FIG.1- PEAK PULSE POWER RATING CURVE
NON-REPETITIVE
PULSE WAVEFORM
SHOWN in FIG. 3
T
A
=25
0
C
FIG.2- PULSE DERATING CURVE
PEAK PULSE POWER (Pppm) or CURRENT (lpp)
DERATING IN PERCENTAGE, %
100
100
Pppm, PEAK PULSE POWER, KW
75
10
50
1.0
25
0.2" sq 5.0mm
2
COPPER PAD AREAS
0.1
0.1 s
1.0 s
10 s
100 s
1.0ms
10ms
0
0
25
50
75
100
125
O
150
175
200
td. PULSE WIDTH, sec.
TA, AMBIENT TEMPERATURE. C
FIG.3- PULSE WAVEFORM
150
lppm, PEAK PULSE CURRENT %
PULSE WIDTH (td) is DEFINED
tr=10 sec.
AS THE POINT WHERE THE PEAK
CURRENT DECAYS to 50% of lppm
PEAK VALUE
lppm
HALF VALUE- lpp
2
100
50
10/1000 sec. WAVEFORM
AS DEFINED BY R.E.A.
td
0
0
1.0
2.0
t, TIME, ms
3.0
4.0
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
