MMBZ5221BLT1 Series
Preferred Device
Zener Voltage Regulators
225 mW SOT−23 Surface Mount
This series of Zener diodes is offered in the convenient, surface
mount plastic SOT−23 package. These devices are designed to provide
voltage regulation with minimum space requirement. They are well
suited for applications such as cellular phones, hand held portables,
and high density PC boards.
Features
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•
•
•
•
•
•
225 mW Rating on FR−4 or FR−5 Board
Zener Voltage Range − 2.4 V to 91 V
Package Designed for Optimal Automated Board Assembly
Small Package Size for High Density Applications
ESD Rating of Class 3 (>16 KV) per Human Body Model
Pb−Free Packages are Available
3
Cathode
1
Anode
MARKING
DIAGRAM
3
1
2
Mechanical Characteristics
CASE:
Void-free, transfer-molded, thermosetting plastic case
FINISH:
Corrosion resistant finish, easily solderable
MAXIMUM CASE TEMPERATURE FOR SOLDERING PURPOSES:
SOT−23
CASE 318
STYLE 8
xxx
G
G
M
260°C for 10 Seconds
POLARITY:
Cathode indicated by polarity band
FLAMMABILITY RATING:
UL 94 V−0
MAXIMUM RATINGS
Rating
Total Power Dissipation on FR−5 Board,
(Note 1) @ T
A
= 25°C
Derated above 25°C
Thermal Resistance,
Junction−to−Ambient
Total Power Dissipation on Alumina
Substrate, (Note 2) @ T
A
= 25°C
Derated above 25°C
Thermal Resistance,
Junction−to−Ambient
Junction and Storage
Temperature Range
Symbol
P
D
225
1.8
R
qJA
P
D
300
2.4
R
qJA
T
J
, T
stg
417
−65 to +150
mW
mW/°C
°C/W
°C
556
mW
mW/°C
°C/W
Max
Unit
xxx
= Specific Device Code
M
= Date Code
G
= Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
Device**
MMBZ52xxBLT1
MMBZ52xxBLT1G
Package
SOT−23
SOT−23
(Pb−Free)
SOT−23
Shipping
†
3000/Tape & Reel
3000/Tape & Reel
MMBZ52xxBLT3
MMBZ52xxBLT3G
10,000/Tape & Reel
SOT−23 10,000/Tape & Reel
(Pb−Free)
**The “T1” suffix refers to an 8 mm, 7 inch reel.
The “T3” suffix refers to an 8 mm, 13 inch reel.
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
Maximum ratings are those values beyond which device damage can occur.
Maximum ratings applied to the device are individual stress limit values (not
normal operating conditions) and are not valid simultaneously. If these limits
are exceeded, device functional operation is not implied, damage may occur
and reliability may be affected.
1. FR−5 = 1.0 X 0.75 X 0.62 in.
2. Alumina = 0.4 X 0.3 X 0.024 in, 99.5% alumina.
DEVICE MARKING INFORMATION
See specific marking information in the device marking
column of the Electrical Characteristics table on page 3 of
this data sheet.
Devices listed in
bold, italic
are ON Semiconductor
Preferred
devices.
Preferred
devices are recommended
choices for future use and best overall value.
©
Semiconductor Components Industries, LLC, 2005
1
May, 2005 − Rev. 8
Publication Order Number:
MMBZ5221BLT1/D
MMBZ5221BLT1 Series
ELECTRICAL CHARACTERISTICS
(Pinout: 1-Anode, 2-No Connection, 3-Cathode) (T
A
= 25°C
unless otherwise noted, V
F
= 0.95 V Max. @ I
F
= 10 mA)
Symbol
V
Z
I
ZT
Z
ZT
I
ZK
Z
ZK
I
R
V
R
I
F
V
F
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
Reverse Voltage
Forward Current
Forward Voltage @ I
F
V
Z
V
R
I
R
V
F
I
ZT
V
I
F
I
Zener Voltage Regulator
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2
MMBZ5221BLT1 Series
ELECTRICAL CHARACTERISTICS
(Pinout: 1-Anode, 2-NC, 3-Cathode) (V
F
= 0.9 V Max @ I
F
= 10 mA for all types.)
Zener Voltage
(Note 3)
Device
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
W
30
30
30
30
29
28
24
23
22
19
Zener Impedance
Z
ZT
@ I
ZT
Z
ZK
@ I
ZK
W
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
Leakage Current
I
R
@ V
R
mA
100
100
75
75
50
25
15
10
5
5
Volts
1
1
1
1
1
1
1
1
1
2
Device
MMBZ5221BL, G
MMBZ5222BL, G
MMBZ5223BL, G
MMBZ5224BL, G
MMBZ5225BL, G
MMBZ5226BL, G
MMBZ5227BL, G
MMBZ5228BL, G
MMBZ5229BL, G
MMBZ5230BL, G
MMBZ5231BL, G
MMBZ5232BL, G
MMBZ5233BL, G
MMBZ5234BL, G
MMBZ5235BL, G
MMBZ5236BL, G
MMBZ5237BL, G
MMBZ5238BL, G
MMBZ5239BL, G
MMBZ5240BL, G
MMBZ5241BL, G
MMBZ5242BL, G
MMBZ5243BL, G
MMBZ5244BL, G
MMBZ5245BL, G
MMBZ5246BL, G
MMBZ5247BL, G
MMBZ5248BL,G
MMBZ5249BL, G
MMBZ5250BL,G
MMBZ5251BL, G
MMBZ5252BL, G
MMBZ5253BL, G
MMBZ5254BL, G
MMBZ5255BL, G
MMBZ5256BL, G
MMBZ5257BL, G
MMBZ5258BL, G
MMBZ5259BL, G
MMBZ5260BL, G
MMBZ5261BL, G
MMBZ5262BL, G
MMBZ5263BL, G
MMBZ5264BL, G
MMBZ5265BL, G
MMBZ5266BL, G
MMBZ5267BL, G
MMBZ5268BL, G
MMBZ5270BL, G
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
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
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
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
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
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
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
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
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
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
69
3. Zener voltage is measured with a pulse test current I
Z
at an ambient temperature of 25°C
NOTE: MMBZ5233BLT1, MMBZ5246BLT1, MMBZ5251BLT1, and MMBZ5252BLT1 Not Available in 10,000/Tape & Reel.
†The “G” suffix indicates Pb−Free package available.
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3
MMBZ5221BLT1 Series
TYPICAL CHARACTERISTICS
θ
VZ, TEMPERATURE COEFFICIENT (mV/
°
C)
8
7
6
5
4
3
2
1
0
−1
−2
−3
V
Z
@ I
ZT
TYPICAL T
C
VALUES
FOR MMBZ5221BLT1 SERIES
100
θ
VZ, TEMPERATURE COEFFICIENT (mV/
°
C)
TYPICAL T
C
VALUES
FOR MMBZ5221BLT1 SERIES
V
Z
@ I
ZT
10
2
3
4
5
6
7
8
9
10
V
Z
, NOMINAL ZENER VOLTAGE (V)
11
12
1
10
V
Z
, NOMINAL ZENER VOLTAGE (V)
100
Figure 1. Temperature Coefficients
(Temperature Range − 55°C to +150°C)
Figure 2. Temperature Coefficients
(Temperature Range − 55°C to +150°C)
1000
Z ZT, DYNAMIC IMPEDANCE (
Ω
)
I
Z
= 1 mA
5 mA
20 mA
10
T
J
= 25°C
I
Z(AC)
= 0.1 I
Z(DC)
f = 1 kHz
1000
IF, FORWARD CURRENT (mA)
75 V (MMBZ5267BLT1)
91 V (MMBZ5270BLT1)
100
100
10
1
1
10
V
Z
, NOMINAL ZENER VOLTAGE
100
1
0.4
150°C
0.5
75°C
25°C
0°C
1.1
1.2
0.6
0.7
0.8
0.9
1.0
V
F
, FORWARD VOLTAGE (V)
Figure 3. Effect of Zener Voltage on
Zener Impedance
Figure 4. Typical Forward Voltage
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