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Surface Mount Zener Diodes
Features:
*225mw Power Dissipation
*Ideal for Surface Mountted Application
*Zener Breakdown Voltage Range 2.4V to 91V
Mechanical Data:
*Case : SOT-23 Molded plastic
*Terminals: Solderable per MIL-STD-202, Method 208
*Polarity: Cathode Indicated by Polarity Band
*Marking: Marking Code (See Table on Page 3)
*Weigh: 0.008grams(approx)
MMBZ5221B Series
SMALL SIGNAL
ZENER DIODES
225m WATTS
3
1
2
SOT-23
SOT-23 Outline Dimensions
Unit:mm
Dim Min Max
A 0.35 0.51
B 1.19 1.40
C 2.10 3.00
D 0.85 1.05
E 0.46 1.00
G 1.70 2.10
H 2.70 3.10
J 0.01 0.13
K 0.89 1.10
L 0.30 0.61
M 0.076 0.25
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MMBZ5221B Series
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Maximum Ratings and Electrical Characteristics (TA=25 C Unless Otherwise Noted)
Characteristics
Total Power Dissipation on FR-5 Board(1)
@TA=25 C
Thermal Resistance Junction to Ambient Air(1)
Symbol
PD
R JA
Value
225
556
Unit
mW
C/W
Forward Voltage @ IF=10mA
Junction and Storage Temperature Range
VF
Tj,TSTG
0.9
-65 to+150
V
C
NOTES:1.FR-5=1.0*0.75*0.62in
ELECTRICAL CHARACTERISTICS
(P inout: 1-Anode, 2-No C onnection, 3-C athode) (TA = 25 C
unles s otherwis e noted, V F = 0.9V Max. @ I F = 10 mA)
Symbol
VZ
IZT
ZZT
IR
VR
IF
VF
Parameter
R evers e Zener Voltage @ IZT
R evers e C urrent
Maximum Zener Impedance @ IZT
R evers e Leakage C urrent @ VR
R evers e Voltage
F orward C urrent
F orward Voltage @ IF
I ZK R evers e C urrent
Z ZK Maximum Zener Impedance@ I ZK
Device Marking
Item
MMBZ5221B
Series
Marking
XX=Specific Device Code
(See Table on page3)
I
IF
VZ VR
IIRZT V F
V
Zener Voltage Regulator
Equivalent Circuit Diagram
3
Cathode
1
Anode
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MMBZ5221B Series
WE ITR ON
E L E C TR IC AL C HAR AC TE R IS TIC S
(P inout: 1-Anode, 2-NC , 3-C athode) (V F = 0.9 V Max @ IF = 10 mA for all types .)
Zener Voltage(Note)
Zener Impedance
Device
MMB Z5221B
MMB Z5222B
MMB Z5223B
MMB Z5224B
MMB Z5225B
MMB Z5226B
MMB Z5227B
MMB Z5228B
MMB Z5229B
MMB Z5230B
MMB Z5231B
MMB Z5232B
MMB Z5233B
MMB Z5234B
MMB Z5235B
MMB Z5236B
MMB Z5237B
MMB Z5238B
MMB Z5239B
MMB Z5240B
MMB Z5241B
MMB Z5242B
MMB Z5243B
MMB Z5244B
MMB Z5245B
MMB Z5246B
MMB Z5247B
MMB Z5248B
MMB Z5249B
MMB Z5250B
MMB Z5251B
MMB Z5252B
MMB Z5253B
MMB Z5254B
MMB Z5255B
MMB Z5256B
MMB Z5257B
MMB Z5258B
MMB Z5259B
MMB Z5260B
MMB Z5261B
MMB Z5262B
MMB Z5263B
MMB Z5264B
MMB Z5265B
MMB Z5266B
MMB Z5267B
MMB Z5268B
MMB Z5269B
MMB Z5270B
Device
Marking
18A
18B
18C
18D
18E
8A
8B
8C
8D
8E
8F
8G
8H
8J
8K
8L
8M
8N
8P
8Q
8R
8S
8T
8U
8V
8W
8X
8Y
8Z
81A
81B
81C
81D
81E
81F
81G
81H
81J
81K
81L
81M
81N
81P
81Q
81R
81S
81T
81U
81V
81W
Min
2.28
2.37
2.56
2.66
2.85
3.13
3.42
3.70
4.08
4.46
4.84
5.32
5.70
5.89
6.46
7.12
7.79
8.26
8.64
9.50
10.4
11 . 4 0
12.35
13.30
14.25
15.20
16.15
17.10
18.05
19.00
20.90
22.80
23.75
25.65
26.60
28.50
31.35
34.20
37.05
40.85
44.65
48.45
53.20
57.00
58.90
64.60
71.25
77.90
82.65
86.45
V Z (Volts )
Nom
Max
2.4 2.52
2.5 2.63
2.7 2.84
2.8 2.94
3 3.15
3.3 3.47
3.6 3.78
3.9 4.10
4.3 4.52
4.7 4.94
5.1 5.36
5.6 5.88
6 6.30
6.2 6.51
6.8 7.14
7.5 7.88
8.2 8.61
8.7 9.14
9.1 9.56
10 10.50
11 11.55
12 12.60
13 13.65
14 14.70
15 15.75
16 16.80
17 17.85
18 18.90
19 19.95
20 21.00
22 23.10
24 25.20
25 26.25
27 28.35
28 29.40
30 31.50
33 34.65
36 37.80
39 40.95
43 45.15
47 49.35
51 53.55
56 58.80
60 63.00
62 65.10
68 71.40
75 78.75
82 86.10
87 91.35
91 95.55
@ I ZT
mA
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
9.5
9
8.5
7.8
7.4
7
6.6
6.2
5.6
5.2
5
4.6
4.5
4.2
3.8
3.4
3.2
3
2.7
2.5
2.2
2.1
2
1.8
1.7
1.5
1.4
1.4
ZZT @ I ZT
30
30
30
30
29
28
24
23
22
19
17
11
7
7
5
6
8
8
10
17
22
30
13
15
16
17
19
21
23
25
29
33
35
41
44
49
58
70
80
93
105
125
150
170
185
230
270
330
370
400
ZZK @ I ZK
mA
1200
1250
1300
1400
1600
0.25
0.25
0.25
0.25
0.25
1600
1700
1900
2000
1900
0.25
0.25
0.25
0.25
0.25
1600
1600
1600
1000
750
0.25
0.25
0.25
0.25
0.25
500 0.25
500 0.25
600 0.25
600 0.25
600 0.25
600 0.25
600 0.25
600 0.25
600 0.25
600 0.25
600 0.25
600 0.25
600 0.25
600 0.25
600 0.25
600 0.25
600 0.25
600 0.25
600 0.25
600 0.25
600 0.25
700 0.25
700 0.25
800 0.25
900 0.25
1000
1100
1300
1400
1400
0.25
0.25
0.25
0.25
0.25
1600
1700
2000
2200
2300
0.25
0.25
0.25
0.25
0.25
NOT E . Zener voltage is meas ured with a puls e tes t current IZ at an ambient temperature of 25 C
Leakage Current
IR @ VR
uA Volts
100 1
100 1
75 1
75 1
50 1
25 1
15 1
10 1
51
52
52
53
5 3.5
54
35
36
3 6.5
3 6.5
37
38
2 8.4
1 9.1
0.5 9.9
0.1 10
0.1 11
0.1 12
0.1 13
0.1 14
0.1 14
0.1 15
0.1 17
0.1 18
0.1 19
0.1 21
0.1 21
0.1 23
0.1 25
0.1 27
0.1 30
0.1 33
0.1 36
0.1 39
0.1 43
0.1 46
0.1 47
0.1 52
0.1 56
0.1 62
0.1 68
0.1 69
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MMBZ5221B Series
WE ITR ON
TYPIC AL C HAR AC TE R IS TIC S
1000
0 V BIAS
1 V BIAS
100
TA = 25C
1000
100
10
1
B IAS TA
50% OF VZNOM
10
0.1
0.01
0.001
0.0001
1 0.00001
1 10 100 0
VZ, NOMINAL ZE NE R VOLTAG E (V)
F igure 5. Typic al C apac itanc e
+150 C
+25 C
±55 C
10 20 30 40 50 60 70 80
V Z, NOMINA L ZE NE R V OTAL G E (V )
Figure 6. Typical L eakage C urrent
90
100 100
TA = 25C
TA = 25C
10 10
11
0.1 0.1
0.01
0
24
0.01
6 8 10 12 10
VZ, ZE NE R VOLTAGE (V)
30 50 70
VZ, ZE NE R VOLTAGE (V)
90
F igure 7. Zener Voltage vers us Zener C urrent
(V Z Up to 12 V )
F igure 8. Zener Voltage vers us Zener C urrent
(12 V to 91 V )
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MMBZ5221B Series
WE ITR ON
TYPIC AL C HAR AC TE R IS TIC S
8
7
T Y P IC A L TC VA L UE S
6 F OR MMB Z5221B LT 1 S E R IE S
5
4
3
VZ @ I ZT
2
1
0
±1
±2
±3
23
4 5 6 7 8 9 10
V Z, NOMINA L ZE NE R V OTAL G E (V )
11
F igure 1. Temperature C oeffic ients
(Temperature R ange ±55 C to +150 C )
12
100
T Y P IC A L TC VA L UE S
F OR MMB Z5221B LT 1 S E R IE S
10
VZ @ I ZT
1
10 100
VZ, NOMINAL ZE NE R VOLTAG E (V)
F igure 2. Temperature C oeffic ients
(Temperature R ange ±55 C to +150 C )
1000
IZ = 1 mA
100
5 mA
20 mA
10
TJ = 25 C
IZ(AC ) = 0.1Z(IDC )
f = 1 kHz
1000
100
75 V (MMB Z5267BTL1)
91 V (MMB Z5270BTL1)
10
150 C 75 C 25 C 0 C
11
1 10 100 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2
VZ, NOMINAL ZE NE R VOLTAG E
V F, F ORWA R D V OLTA G E (V )
F igure 3. E ffec t of ZeneorltaVge on
Zener Impedance
F igure 4. Typic al F orward Voltage
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