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MMBZ5221ELT1 Series
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.
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Specification Features:
• 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 s)
• Pb−Free Packages are Available
Mechanical Characteristics:
Void-free, transfer-molded, thermosetting plastic case
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 Symbol Max Unit
Peak Power Dissipation @ 20 s (Note 1)
@ T
≤ 25°C
L
Total Power Dissipation on FR−5 Board,
(Note 2) @ T
Derated above 25°C
Thermal Resistance −
Junction−to−Ambient
Total Power Dissipation on Alumina
Substrate, (Note 3) @ T
Derated above 25°C
Thermal Resistance −
Junction−to−Ambient
Junction and Storage
Temperature Range
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.
= 25°C
A
= 25°C
A
P
P
R
P
R
TJ, T
stg
225 W
225
1.8mWmW/°C
556 °C/W
300
2.4mWmW/°C
417 °C/W
−65 to
+150
°C
pk
D
JA
D
JA
3
Cathode
1
2
SOT−23
CASE 318
STYLE 8
1
Anode
3
MARKING DIAGRAM
xxx M
xxx = Specific Device Code
M = Date Code
ORDERING INFORMATION
Device Package Shipping
MMBZ52xxEL T1 SOT−23 3000/Tape & Reel
MMBZ52xxEL T3* SOT−23 10,000/Tape & 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.
*MMBZ5246EL, and MMBZ5252EL
Not Available in 10,000/Tape & Reel.
†
DEVICE MARKING INFORMATION
See specific marking information in the device marking
column of the Electrical Characteristics table on page 2 of
this data sheet.
Semiconductor Components Industries, LLC, 2005
January, 2005 − Rev. 4
1 Publication Order Number:
MMBZ5221ELT1/D
MMBZ5221ELT1 Series
Device
ELECTRICAL CHARACTERISTICS
(Pinout: 1-Anode, 2-No Connection, 3-Cathode) (TA = 25°C
unless otherwise noted, V
Symbol
V
Reverse Zener Voltage @ I
Z
I
Z
I
Z
V
V
Reverse Current
ZT
Maximum Zener Impedance @ I
ZT
Reverse Current
ZK
Maximum Zener Impedance @ I
ZK
I
Reverse Leakage Current @ V
R
Reverse Voltage
R
I
Forward Current
F
Forward Voltage @ I
F
= 0.95 V Max. @ IF = 10 mA)
F
Parameter
ZT
ZT
ZK
R
F
ELECTRICAL CHARACTERISTICS (Pinout: 1-Anode, 2-NC, 3-Cathode) (V
VRV
Z
Zener Voltage Regulator
= 0.9 V Max @ IF = 10 mA for all types.)
F
I
I
F
I
V
R
F
I
ZT
V
Zener Voltage (Note 4) Zener Impedance Leakage Current
Device
Marking
VZ (V) @ I
ZTZZT
Min Nom Max mA mA A V
@ I
ZT
ZZK @ I
ZK
IR @ V
MMBZ5221ELT1G,T3G† BE2 2.28 2.4 2.52 20 30 1200 0.25 100 1
MMBZ5226ELT1,T3 BE7 3.13 3.3 3.47 20 28 1600 0.25 25 1
MMBZ5228ELT1,T3 BE9 3.70 3.9 4.10 20 23 1900 0.25 10 1
MMBZ5229ELT1,T3 BF1 4.08 4.3 4.52 20 22 2000 0.25 5 1
MMBZ5230ELT1,T3 BF2 4.46 4.7 4.94 20 19 1900 0.25 5 2
MMBZ5231ELT1,T3 BF3 4.84 5.1 5.36 20 17 1600 0.25 5 2
MMBZ5232ELT1,T3 BF4 5.32 5.6 5.88 20 11 1600 0.25 5 3
MMBZ5234ELT1,T3 BF6 5.89 6.2 6.51 20 7 1000 0.25 5 4
MMBZ5235ELT1,T3 BF7 6.46 6.8 7.14 20 5 750 0.25 3 5
MMBZ5236ELT1,T3 BF8 7.12 7.5 7.88 20 6 500 0.25 3 6
MMBZ5237ELT1,T3 BF9 7.79 8.2 8.61 20 8 500 0.25 3 6.5
MMBZ5239ELT1,T3 BG2 8.65 9.1 9.55 20 10 600 0.25 3 7
MMBZ5240ELT1,T3 BG3 9.50 10 10.50 20 17 600 0.25 3 8
MMBZ5242ELT1,T3 BG5 11.40 12 12.60 20 30 600 0.25 1 9.1
MMBZ5243ELT1,T3 BG6 12.35 13 13.65 9.5 13 600 0.25 0.5 9.9
MMBZ5244ELT1,T3 BG7 13.30 14 14.70 9 15 600 0.25 0.1 10
MMBZ5245ELT1,T3 BG8 14.25 15 15.75 8.5 16 600 0.25 0.1 11
MMBZ5246ELT1* BG9 15.20 16 16.80 7.8 17 600 0.25 0.1 12
MMBZ5248ELT1,T3 BH2 17.10 18 18.90 7 21 600 0.25 0.1 14
MMBZ5250ELT1,T3 BH4 19.00 20 21.00 6.2 25 600 0.25 0.1 15
Devices listed in
bold, italic
are ON Semiconductor Preferred devices. Preferred devices are recommended choices for future use and
best overall value.
4. Zener voltage is measured with a pulse test current I
†The “G’’ suffix indicates Pb−Free package available.
at an ambient temperature of 25°C.
Z
*Not Available in the 10,0000/Tape & Reel.
R
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