MCC
TM
Micro Commercial Components
omponents
20736 Marilla
Street Chatsworth
!"#
$
% !"#
SMAJ5918B
THRU
SMAJ5942B
1.5 Watt
Zener Diode
5.1 to 51 Volts
Features
•
•
•
•
Low Zener Impedance
Low Regulation Factor
V
Z
– tolerance:
f5%
For Surface Mount Applications
Case Material: Molded Plastic. UL Flammability
Classification Rating 94V-0
Maximum Ratings
•
•
•
•
•
Junction Temperature: 150
Storage Temperature: -65 to +175
1.5 Watt DC Power Dissipation (T
L
75
)
Thermal Resistance Junction to
Lead: 50
/W
Forward Voltage @ 200mA: 1.5 Volts
DO-214AC
(SMAJ)( LEAD FRAME)
H
J
A
C
E
F
G
DIMENSIONS
INCHES
MIN
.079
.050
.002
---
.030
.065
.189
.157
.090
MM
MIN
2.00
1.27
.05
---
.76
1.65
4.80
4.00
2.25
D
B
DIM
A
B
C
D
E
F
G
H
J
MAX
.096
.064
.008
.02
.060
.091
.220
.181
.115
MAX
2.44
1.63
.20
.51
1.52
2.32
5.59
4.60
2.92
NOTE
SUGGESTED SOLDER
PAD LAYOUT
0.085 ”
MA X
0.058 ” MI N
0.05
MI N
Revision:
4
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2007/09/07
SMAJ5918B THRU SMAJ5942B
MCC
TM
Micro Commercial Components
ELECTRICAL CHARACTERISTICS @25°C
MCC
PART
NUMBER
SMAJ5918B
SMAJ5919B
SMAJ5920B
SMAJ5921B
SMAJ5922B
SMAJ5923B
SMAJ5924B
SMAJ5925B
SMAJ5926B
SMAJ5927B
SMAJ5928B
SMAJ5929B
SMAJ5930B
SMAJ5931B
SMAJ5932B
SMAJ5933B
SMAJ5934B
SMAJ5935B
SMAJ5936B
SMAJ5937B
SMAJ5938B
SMAJ5939B
SMAJ5940B
SMAJ5941B
SMAJ5942B
ZENER
VOLTAGE
V
Z
(1)
VOLTS
5.1
5.6
6.2
6.8
7.5
8.2
9.1
10
11
12
13
15
16
18
20
22
24
27
30
33
36
39
43
47
51
TEST
CURRENT
I
ZT
mA
73.5
66.9
60.5
55.1
50.0
45.7
41.2
37.5
34.1
31.2
28.8
25.0
23.4
20.8
18.7
17.0
15.6
13.9
12.5
11.4
10.4
9.6
8.7
8.0
7.3
MAXIMUM
DYNAMIC
IMPEDANCE
Z
ZT
@ I
ZT
OHMS
4.0
2.0
2.0
2.5
3.0
3.5
4.0
4.5
5.5
6.5
7.0
9.0
10.0
12.0
14.0
17.5
19.0
23.0
28.0
33.0
38.0
45.0
53.0
67.0
70.0
KNEE
CURRENT
I
ZK
mA
1.0
1.0
1.0
1.0
0.5
0.5
0.5
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
KNEE
IMPEDANCE
Z
ZK
OHMS
350
250
200
200
400
400
500
500
550
550
550
600
600
650
650
650
700
700
750
800
850
900
950
1000
1100
MAXIMUM
REVERSE
CURRENT
I
R
µA
2.5
2.5
2.5
2.5
2.5
2.5
2.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
REVERSE
VOLTAGE
V
R
VOLTS
2.0
3.0
4.0
5.2
6.0
6.5
7.0
8.0
8.4
9.1
9.9
11.4
12.2
13.7
15.2
16.7
18.2
20.6
22.8
25.1
27.4
29.7
32.7
35.8
38.8
18B
19B
20B
21B
22B
23B
24B
25B
26B
27B
28B
29B
30B
31B
31B
33B
34B
35B
36B
37B
38B
39B
40B
41B
42B
DEVICE
MARKING
1) Based on DC-measurement at thermal equilibrium while maintaining the lead temperature(T
L
) at 30 , 9.5mm(3/8’’)
from the diode body.
Revision:
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2007/09/07
SMAJ5918B THRU SMAJ5942B
MCC
TM
Micro Commercial Components
Characteristics
(T
j
=25
Symbol
Vz
I
ZT
Z
ZT
I
ZK
Z
ZK
I
R
V
R
I
F
V
F
unless otherwise specified)
Parameter
Reverse zener voltage @ I
ZT
Reverse current
Maximum zener impedance @ I
ZT
Reverse current
Maximum zener impedance @ I
ZK
Reverse leakage current @ V
R
Breakdown voltage
Forward current
Forward voltage @ I
F
Figure 1. Zener voltage regulator
3.0
2.5
2.0
1.5
POWER DISSIPATION, Watts
T
L
1.0
0.5
0
0
25
50
75
o
100
125
150
LEAD
TEMPERATURE ( C)
Figure 2. Steady state power derating
Figure 3. Vz – 3.3 thru 10 volts
Figure 4. Zener voltage – 3.3 to 12 volts
Figure 5. Zener voltage – 14 to 43 volts
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Revision:
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SMAJ5918B THRU SMAJ5942B
MCC
TM
Micro Commercial Components
Figure 6. Effect of zener voltage
Figure 7. Capacitance curve
Figure 8. Typical pulse rating curve
Figure 9. Pulse waveform
Figure 10. Pulse waveform
Revision:
4
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2007/09/07
MCC
TM
Micro Commercial Components
***IMPORTANT NOTICE***
Micro Commercial Components Corp
.
reserves the right to make changes without further notice to any
product herein to make corrections, modifications , enhancements , improvements , or other changes .
Micro Commercial Components Corp
.
does not assume any liability arising out of the application or
use of any product described herein; neither does it convey any license under its patent rights ,nor
the rights of others . The user of products in such applications shall assume all risks of such use
and will agree to hold
Micro Commercial Components Corp
.
and all the companies whose
products are represented on our website, harmless against all damages.
***APPLICATIONS DISCLAIMER***
Products offer by
Micro Commercial Components Corp
.
are not intended for use in Medical,
Aerospace or Military Applications.
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