Data Sheet
De s c ription
3
1
Surface Mount Zener Diodes
225m WATTS SMALL SIGNAL
M e c ha nic a l Dim e ns ions
FMBZ5221B
S e rie s
Cathode
Anode
. 110
. 060
. 037
. 115
. 037
1
3
2
. 016
3
CATHODE
ANODE
1
. 043
2
. 016
. 004
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)
Maximum Ratings and Electrical Characteristics
(TA=25 C Unless Otherwise Noted)
Characteristics
Total Power Dissipation on FR-5 Board
@T
A
=25 C
Thermal Resistance Junction to Ambient Air
Forward Voltage @ IF=10mA
Junction and Storage Temperature Range
NOTES:1.FR-5=1.0*0.75*0.62in
(1)
(1)
Symbol
PD
R JA
VF
Tj,TSTG
Value
225
556
0.9
-65 to+150
Unit
mW
C/W
V
C
ELECTRICAL
Symbol
V
Z
I
ZT
Z
ZT
I
R
V
R
I
F
V
F
I
ZK
Z
ZK
CHARACTERISTICS
I
I
F
(P inout: 1-Anode, 2-No C onnection, 3-C athode) (T
A
= 25 C
unles s otherwis e noted, V
F
= 0.9V Max. @ I
F
= 10 mA)
Parameter
R evers e Zener Voltage @ I
ZT
R evers e C urrent
Maximum Zener Impedance @ I
ZT
R evers e Leakage C urrent @ V
R
R evers e Voltage
F orward C urrent
F orward Voltage @ I
F
R evers e C urrent
Maximum Zener Impedance@
I
ZK
V
Z
V
R
I
R
V
F
I
ZT
V
Zener V
oltage Regulator
Data Sheet
Surface Mount Zener Diodes
225m WATTS SMALL SIGNAL
E L E C T R IC A L C HA R A C T E R IS T IC S
(P inout: 1-Anode, 2-NC , 3-C athode) (V
F
= 0.9 V Max @ I
F
= 10 mA for all types .)
Zener Voltage (Note)
Devic e
Marking
18A
18B
18C
18D
18E
8A
8B
8C
8D
8E
V
Z
(Volts )
Min
2.28
2.37
2.56
2.66
2.85
3.13
3.42
3.70
4.08
4.46
Nom
2.4
2.5
2.7
2.8
3
3.3
3.6
3.9
4.3
4.7
Max
2.52
2.63
2.84
2.94
3.15
3.47
3.78
4.10
4.52
4.94
@ I
ZT
mA
20
20
20
20
20
20
20
20
20
20
Ω
30
30
30
30
29
28
24
23
22
19
Zener Impedanc e
Z
ZT
@ I
ZT
Z
ZK
@ I
ZK
Ω
1200
1250
1300
1400
1600
1600
1700
1900
2000
1900
mA
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
L eakage C urrent
I
R
@ V
R
uA
100
100
75
75
50
25
15
10
5
5
Volts
1
1
1
1
1
1
1
1
1
2
Devic e
FMB
Z5221B LT 1
FMB
Z5222B LT 1
FMB
Z5223B LT 1
FMB
Z5224B LT 1
FMB
Z5225B LT 1
FMB
Z5226B LT 1
FMB
Z5227B LT 1
FMB
Z5228B LT 1
FMB
Z5229B LT 1
FMB
Z5230B LT 1
FMBZ5231BLT1
FMBZ5232BLT1
FMB
Z5233B LT 1*
F
MBZ5234BLT1
F
MBZ5235BLT1
FMB
Z5236B LT 1
FMB
Z5237B LT 1
FMB
Z5238B LT 1
FMB
Z5239B LT 1
FMBZ5240BLT1
FMB
Z5241B LT 1
F
MBZ5242BLT1
FMB
Z5243B LT 1
FMB
Z5244B LT 1
F
MBZ5245BLT1
FMB
Z5246B LT 1*
FMB
Z5247B LT 1
F
MBZ5248BLT1
FMB
Z5249B LT 1
F
MBZ5250BLT1
FMB
Z5251B LT 1*
FMB
Z5252B LT 1*
FMB
Z5253B LT 1
F
MBZ5254BLT1
FMB
Z5255B LT 1
FMB
Z5256B LT 1
F
MBZ5257BLT1
FMB
Z5258B LT 1
FMB
Z5259B LT 1
FMB
Z5260B LT 1
FMB
Z5261B LT 1
FMB
Z5262B LT 1
FMB
Z5263B LT 1
FMB
Z5264B LT 1
FMB
Z5265B LT 1
FMB
Z5266B LT 1
FMB
Z5267B LT 1
FMB
Z5268B LT 1
FMB
Z5269B LT 1
FMB
Z5270B LT 1
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
4.84
5.32
5.70
5.89
6.46
7.12
7.79
8.26
8.64
9.50
10.4
11.40
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
5.1
5.6
6
6.2
6.8
7.5
8.2
8.7
9.1
10
11
12
13
14
15
16
17
18
19
20
22
24
25
27
28
30
33
36
39
43
47
51
56
60
62
68
75
82
87
91
5.36
5.88
6.30
6.51
7.14
7.88
8.61
9.14
9.56
10.50
11.55
12.60
13.65
14.70
15.75
16.80
17.85
18.90
19.95
21.00
23.10
25.20
26.25
28.35
29.40
31.50
34.65
37.80
40.95
45.15
49.35
53.55
58.80
63.00
65.10
71.40
78.75
86.10
91.35
95.55
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
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
1600
1600
1600
1000
750
500
500
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
700
700
800
900
1000
1100
1300
1400
1400
1600
1700
2000
2200
2300
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
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
5
5
5
5
3
3
3
3
3
3
2
1
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
0.1
0.1
0.1
0.1
2
3
3.5
4
5
6
6.5
6.5
7
8
8.4
9.1
9.9
10
11
12
13
14
14
15
17
18
19
21
21
23
25
27
30
33
36
39
43
46
47
52
56
62
68
69
NOT E . Zener voltage is meas ured with a puls e tes t current I
Z
at an ambient temperature of 25 C
T Y P IC A L C HA R A C T E R IS T IC S
θ
VZ, TEMPERATURE COEFFICIENT (mV/ C)
TEMPERATURE
(mV/C)
8
7
6
5
4
3
2
1
0
±1
±2
±3
2
3
4
5
6
7
8
9
10
11
12
V
Z
, NOMINA L ZE NE R V OL G E (V )
TA
T Y P IC A L T
C
V A L UE S
VA
F OR MMB Z5221B L 1 S E R IE S
F OR
FMB
T
100
θ
VZ, TEMPERATURE COEFFICIENT (mV/ C)
TEMPERATURE
(mV/C)
T Y P IC A L T
C
V A L UE S
VA
F ORORFMB Z5221B L 1 S E R IE S
F MMB
T
V
Z
@ I
ZT
V
Z
@ I
ZT
10
1
10
V
Z
, NOMINA L ZE NE R V OL T A G E (V )
OLT
100
F igure1
Temperature
C oeffic ients
(Temperature R ange±5
5C~+150C)
5
1000
T
J
= 25 C
I
Z(A C )
= 0.1
Z(
I
DC )
f = 1 kHz
1000
F igure 2. T emperature C oeffic ients
Temperature
(Temperature
(T emperature R ange ± 5 C to +150 C )
5
75 V (FMB Z5267BT 1)
L
91 V (FMB Z5270BT 1)
L
Z ZT, DYNAMIC IMPEDANCE
Ω
)
(
I
Z
= 1 mA
100
IF, FORWARD CURRENT (mA)
100
5 mA
20 mA
10
10
150 C
1
1
10
V
Z
, NOMINA L ZE NE R V OLTA G E
100
1
0.4
75 C 25 C
0.6
0C
1.0
1.1
1.2
0.5
F igure3.E ffec t of Zener Voltage on Zener Impedanc e
1000
1000
F igure 4. Typic al F orward Voltage
0.7
0.8
0.9
V
F
, F OR R D V OL G E (V )
WA
TA
I R , LEAKAGE CURRENT (
µ
A)
0 V BIAS
1 V BIAS
C, CAPACITANCE (pF)
100
T
A
= 25C
100
10
1
+150 C
B IA S T A
50% OF V
Z
NOM
10
0.1
0.01
0.001
+25 C
±55 C
0.0001
1
1
10
V
Z
, NOMINA L ZE NE R V OLTA G E (V )
100
0.00001
0
10
20
30
40
50
60
V
Z
, NOMINA L ZE NE R V OL G E (V )
TA
70
80
90
F igure 5. Typic al C apac itanc e
100
100
F igure 6. Typic al L eakage C urrent
T
A
= 25C
I Z , ZENER CURRENT (mA)
10
T
A
= 25C
I Z , ZENER CURRENT (mA)
10
1
1
0.1
0.1
0.01
0
2
4
6
8
V
Z
, ZE NE R V OLTA G E (V )
10
12
0.01
10
30
50
70
V
Z
, ZE NE R V OLTA G E (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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