MMBZ5221ELT1 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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•
•
•
•
•
•
•
3
Cathode
1
Anode
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
Peak Power − 225 W (8 x 20
ms)
Pb−Free Packages are Available
MARKING
DIAGRAM
3
1
2
SOT−23
CASE 318
STYLE 8
1
Bxx M
G
G
Mechanical Characteristics:
CASE:
Void-free, transfer-molded, thermosetting plastic case
FINISH:
Corrosion resistant finish, easily solderable
MAXIMUM CASE TEMPERATURE FOR SOLDERING PURPOSES:
260°C for 10 Seconds
POLARITY:
Cathode indicated by polarity band
FLAMMABILITY RATING:
UL 94 V−0
MAXIMUM RATINGS
Rating
Peak Power Dissipation @ 20
ms
(Note 1)
@ T
L
≤
25°C
Total Power Dissipation on FR−5 Board,
(Note 2) @ T
A
= 25°C
Derated above 25°C
Thermal Resistance, Junction−to−Ambient
Total Power Dissipation on Alumina
Substrate, (Note 3) @ T
A
= 25°C
Derated above 25°C
Thermal Resistance, Junction−to−Ambient
Junction and Storage Temperature Range
Symbol
P
pk
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
225
Unit
W
Bxx
xx
M
G
= Device Code
= (Refer to page 2)
= Date Code*
= Pb−Free Package
(Note: Microdot may be in either location)
*Date Code orientation may vary depending
upon manufacturing location.
ORDERING INFORMATION
Device
MMBZ52xxELT1
MMBZ52xxELT1G
MMBZ52xxELT3
MMBZ52xxELT3G
Package
SOT−23
Shipping
†
3000/Tape & Reel
SOT−23 3000/Tape & Reel
(Pb−Free)
SOT−23
10000/Tape & Reel
SOT−23 10000/Tape & Reel
(Pb−Free)
†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. Nonrepetitive current pulse per Figure 9.
2. FR−5 = 1.0 X 0.75 X 0.62 in.
3. 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 2 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
August, 2005 − Rev. 6
Publication Order Number:
MMBZ5221ELT1/D
MMBZ5221ELT1 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
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 4)
Device
Marking
BE2
BE7
BE9
BF1
BF2
BF3
BF4
BF6
BF7
BF8
BF9
BG2
BG3
BG5
BG6
BG7
BG8
BG9
BH2
BH4
V
Z
(V)
Min
2.28
3.13
3.70
4.08
4.46
4.84
5.32
5.89
6.46
7.12
7.79
8.65
9.50
11.40
12.35
13.30
14.25
15.20
17.10
19.00
Nom
2.4
3.3
3.9
4.3
4.7
5.1
5.6
6.2
6.8
7.5
8.2
9.1
10
12
13
14
15
16
18
20
Max
2.52
3.47
4.10
4.52
4.94
5.36
5.88
6.51
7.14
7.88
8.61
9.55
10.50
12.60
13.65
14.70
15.75
16.80
18.90
21.00
@ I
ZT
mA
20
20
20
20
20
20
20
20
20
20
20
20
20
20
9.5
9
8.5
7.8
7
6.2
Zener Impedance
Z
ZT
@ I
ZT
W
30
28
23
22
19
17
11
7
5
6
8
10
17
30
13
15
16
17
21
25
Z
ZK
@ I
ZK
W
1200
1600
1900
2000
1900
1600
1600
1000
750
500
500
600
600
600
600
600
600
600
600
600
mA
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
Leakage Current
I
R
@ V
R
mA
100
25
10
5
5
5
5
5
3
3
3
3
3
1
0.5
0.1
0.1
0.1
0.1
0.1
V
1
1
1
1
2
2
3
4
5
6
6.5
7
8
9.1
9.9
10
11
12
14
15
Device
MMBZ5221ELT1/T3, G
MMBZ5226ELT1/T3, G
MMBZ5228ELT1/T3, G
MMBZ5229ELT1/T3, G
MMBZ5230ELT1/T3, G
MMBZ5231ELT1/T3,G
MMBZ5232ELT1/T3,G
MMBZ5234ELT1/T3,G
MMBZ5235ELT1/T3,G
MMBZ5236ELT1/T3, G
MMBZ5237ELT1/T3, G
MMBZ5239ELT1/T3, G
MMBZ5240ELT1/T3,G
MMBZ5242ELT1/T3,G
MMBZ5243ELT1/T3, G
MMBZ5244ELT1/T3, G
MMBZ5245ELT1/T3,G
MMBZ5246ELT1, G†
MMBZ5248ELT1/T3,G
MMBZ5250ELT1/T3,G
4. Zener voltage is measured with a pulse test current I
Z
at an ambient temperature of 25°C.
*The “G’’ suffix indicates Pb−Free package available.
†MMBZ5246EL, MMBZ5252EL, and MMBZ5265EL Not Available in 10,000/Tape & Reel.
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2
MMBZ5221ELT1 Series
TYPICAL CHARACTERISTICS
8
7
6
5
4
3
2
1
0
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
θ
VZ , TEMPERATURE COEFFICIENT (mV/ C)
°
10
−1
−2
−3
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
150°C
1
1
10
V
Z
, NOMINAL ZENER VOLTAGE
100
1
0.4
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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