SMB5921B series
Surface Mount Zener Diodes
P b
Lead(Pb)-Free
Features:
* Glass passivated chip
* Low leakage
* Built-in strain relief
* Low inductance
* High peak reverse power dissipation
* For use in stabilizing and clipping circuits with
high power rating.
SURFACE MOUNT
ZENER DIODES
3.0 WATTS
SMB(DO-214AA)
Mechanical Data
* Case: Molded plastic SMB/DO-214AA
* Epoxy: UL 94V-0 rate ame retardant
* Terminals: Solderable per MIL-STD-750 method 2026
* Polarity: cathode band
* Mounting position: Any
* Weight: 0.093 gram
SMB Outline Dimension
B
Dim
A
C
A
B
C
D
J
H
E
G
D
E
G
H
J
Unit:mm
SMB
Min
3.30
4.06
1.96
0.15
5.00
0.10
0.76
2.00
Max
3.94
4.80
2.21
0.31
5.59
0.20
1.52
2.62
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Rev.A 04-Nov-09
SMB5921B series
MAXIMUM RATINGS (T
A
=25°C unless otherwise noted)
Parameter
DC Power Dissipation at TL = 50°C
Junction Temperature Range
Storage Temperature Range
Symbol
P
D
T
J
T
STG
Value
3.0
-55 to +175
-55 to +175
Max.
DC Zener
Current
I
ZM
mA
440.0
400.0
364.0
328.0
300.0
272.0
250.0
230.0
200.0
186.0
166.0
150.0
136.0
124.0
110.0
100.0
90.0
82.0
76.0
68.0
62.0
58.0
52.0
48.0
44.0
40.0
36.0
32.0
30.0
UNIT
W
°C
°C
Part
Number
Nominal Zener
Voltage
V
Z
@ I
ZT
Nom. V
6.8
7.5
8.2
9.1
10.0
11.0
12.0
13.0
15.0
16.0
18.0
20.0
22.0
24.0
27.0
30.0
33.0
36.0
39.0
43.0
47.0
51.0
56.0
62.0
68.0
75.0
82.0
91.0
100.0
mA
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
6.7
6.0
5.5
5.0
4.6
4.1
3.7
Ω
2.5
3.0
3.5
4.0
4.5
5.5
6.5
7.0
9.0
10.0
12.0
14.0
18.0
19.0
23.0
26.0
33.0
38.0
45.0
53.0
67.0
70.0
86.0
100.0
120.0
140.0
160.0
200.0
250.0
Max. Zener Impedance
Z
ZT
@ I
ZT
mA
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
6.7
6.0
5.5
5.0
4.6
4.1
3.7
Z
ZK
@ I
ZK
Ω
200
400
400
500
500
550
550
550
600
600
650
650
650
700
700
750
800
850
900
950
1000
1100
1300
1500
1700
2000
2500
3000
3100
mA
1.00
0.50
0.50
0.50
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
0.25
0.25
0.25
0.25
0.25
0.25
0.25
Max. Reverse
Leakage Current
I
R
@ V
R
uA
5.0
5.0
5.0
5.0
5.0
5.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
V
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
42.6
47.1
51.7
56.0
62.2
69.2
76.0
Marking
Code
SMB5921B
SMB5922B
SMB5923B
SMB5924B
SMB5925B
SMB5926B
SMB5927B
SMB5928B
SMB5929B
SMB5930B
SMB5931B
SMB5932B
SMB5933B
SMB5934B
SMB5935B
SMB5936B
SMB5937B
SMB5938B
SMB5939B
SMB5940B
SMB5941B
SMB5942B
SMB5943B
SMB5944B
SMB5945B
SMB5946B
SMB5947B
SMB5948B
SMB5949B
21B
22B
23B
24B
25B
26B
27B
28B
29B
30B
31B
32B
33B
34B
35B
36B
37B
38B
39B
40B
41B
42B
43B
44B
45B
46B
47B
48B
49B
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Rev.A 04-Nov-09
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