Semiconductor Components Industries, LLC, 2005
May, 2005 − Rev. 8 1Publication Order Number:
MMBZ5221BLT1/D
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
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
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 Symbol Max Unit
Total Power Dissipation on FR−5 Board,
(Note 1) @ TA = 25°C
Derated above 25°C
PD225
1.8 mW
mW/°C
Thermal Resistance,
Junction−to−Ambient RJA 556 °C/W
Total Power Dissipation on Alumina
Substrate, (Note 2) @ TA = 25°C
Derated above 25°C
PD300
2.4 mW
mW/°C
Thermal Resistance,
Junction−to−Ambient RJA 417 °C/W
Junction and Storage
Temperature Range TJ, Tstg −65 to +150 °C
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** Package Shipping
ORDERING INFORMATION
SOT−23
CASE 318
STYLE 8
3
Cathode 1
Anode
MMBZ52xxBLT1 SOT−23 3000/Tape & Reel
MARKING
DIAGRAM
See specific marking information in the device marking
column of the Electrical Characteristics table on page 3 of
this data sheet.
DEVICE MARKING INFORMATION
**The “T1” suffix refers to an 8 mm, 7 inch reel.
The “T3” suffix refers to an 8 mm, 13 inch reel.
M
MMBZ52xxBLT3 SOT−23 10,000/Tape & Reel
3
12
Devices listed in
bold, italic
are ON Semiconductor
Preferred devices. Preferred devices are recommended
choices for future use and best overall value.
MMBZ52xxBLT1G SOT−23
(Pb−Free) 3000/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.
MMBZ52xxBLT3G SOT−23
(Pb−Free) 10,000/Tape & Reel
http://onsemi.com
xxx
xxx = Specific Device Code
M = Date Code
= Pb−Free Package
(Note: Microdot may be in either location)
MMBZ5221BLT1 Series
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2
ELECTRICAL CHARACTERISTICS
(Pinout: 1-Anode, 2-No Connection, 3-Cathode) (TA = 25°C
unless otherwise noted, VF = 0.95 V Max. @ IF = 10 mA)
Symbol Parameter
VZReverse Zener Voltage @ IZT
IZT Reverse Current
ZZT Maximum Zener Impedance @ IZT
IZK Reverse Current
ZZK Maximum Zener Impedance @ IZK
IRReverse Leakage Current @ VR
VRReverse Voltage
IFForward Current
VFForward Voltage @ IF
Zener Voltage Regulator
IF
V
I
IR
IZT
VR
VZVF
MMBZ5221BLT1 Series
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3
ELECTRICAL CHARACTERISTICS (Pinout: 1-Anode, 2-NC, 3-Cathode) (VF = 0.9 V Max @ IF = 10 mA for all types.)
Zener Voltage (Note 3) Zener Impedance Leakage Current
Device
VZ (Volts) @ IZT ZZT @ IZT ZZK @ IZK IR @ VR
Device
Device
Marking Min Nom Max mA mA A Volts
MMBZ5221BL, G 18A 2.28 2.4 2.52 20 30 1200 0.25 100 1
MMBZ5222BL, G 18B 2.37 2.5 2.63 20 30 1250 0.25 100 1
MMBZ5223BL, G 18C 2.56 2.7 2.84 20 30 1300 0.25 75 1
MMBZ5224BL, G 18D 2.66 2.8 2.94 20 30 1400 0.25 75 1
MMBZ5225BL, G 18E 2.85 3 3.15 20 29 1600 0.25 50 1
MMBZ5226BL, G 8A 3.13 3.3 3.47 20 28 1600 0.25 25 1
MMBZ5227BL, G 8B 3.42 3.6 3.78 20 24 1700 0.25 15 1
MMBZ5228BL, G 8C 3.70 3.9 4.10 20 23 1900 0.25 10 1
MMBZ5229BL, G 8D 4.08 4.3 4.52 20 22 2000 0.25 5 1
MMBZ5230BL, G 8E 4.46 4.7 4.94 20 19 1900 0.25 5 2
MMBZ5231BL, G 8F 4.84 5.1 5.36 20 17 1600 0.25 5 2
MMBZ5232BL, G 8G 5.32 5.6 5.88 20 11 1600 0.25 5 3
MMBZ5233BL, G 8H 5.70 6 6.30 20 7 1600 0.25 5 3.5
MMBZ5234BL, G 8J 5.89 6.2 6.51 20 7 1000 0.25 5 4
MMBZ5235BL, G 8K 6.46 6.8 7.14 20 5 750 0.25 3 5
MMBZ5236BL, G 8L 7.12 7.5 7.88 20 6 500 0.25 3 6
MMBZ5237BL, G 8M 7.79 8.2 8.61 20 8 500 0.25 3 6.5
MMBZ5238BL, G 8N 8.26 8.7 9.14 20 8 600 0.25 3 6.5
MMBZ5239BL, G 8P 8.64 9.1 9.56 20 10 600 0.25 3 7
MMBZ5240BL, G 8Q 9.50 10 10.50 20 17 600 0.25 3 8
MMBZ5241BL, G 8R 10.4 11 11.55 20 22 600 0.25 2 8.4
MMBZ5242BL, G 8S 11.40 12 12.60 20 30 600 0.25 1 9.1
MMBZ5243BL, G 8T 12.35 13 13.65 9.5 13 600 0.25 0.5 9.9
MMBZ5244BL, G 8U 13.30 14 14.70 9 15 600 0.25 0.1 10
MMBZ5245BL, G 8V 14.25 15 15.75 8.5 16 600 0.25 0.1 11
MMBZ5246BL, G 8W 15.20 16 16.80 7.8 17 600 0.25 0.1 12
MMBZ5247BL, G 8X 16.15 17 17.85 7.4 19 600 0.25 0.1 13
MMBZ5248BL,G 8Y 17.10 18 18.90 7 21 600 0.25 0.1 14
MMBZ5249BL, G 8Z 18.05 19 19.95 6.6 23 600 0.25 0.1 14
MMBZ5250BL,G 81A 19.00 20 21.00 6.2 25 600 0.25 0.1 15
MMBZ5251BL, G 81B 20.90 22 23.10 5.6 29 600 0.25 0.1 17
MMBZ5252BL, G 81C 22.80 24 25.20 5.2 33 600 0.25 0.1 18
MMBZ5253BL, G 81D 23.75 25 26.25 5 35 600 0.25 0.1 19
MMBZ5254BL, G 81E 25.65 27 28.35 4.6 41 600 0.25 0.1 21
MMBZ5255BL, G 81F 26.60 28 29.40 4.5 44 600 0.25 0.1 21
MMBZ5256BL, G 81G 28.50 30 31.50 4.2 49 600 0.25 0.1 23
MMBZ5257BL, G 81H 31.35 33 34.65 3.8 58 700 0.25 0.1 25
MMBZ5258BL, G 81J 34.20 36 37.80 3.4 70 700 0.25 0.1 27
MMBZ5259BL, G 81K 37.05 39 40.95 3.2 80 800 0.25 0.1 30
MMBZ5260BL, G 81L 40.85 43 45.15 3 93 900 0.25 0.1 33
MMBZ5261BL, G 81M 44.65 47 49.35 2.7 105 1000 0.25 0.1 36
MMBZ5262BL, G 81N 48.45 51 53.55 2.5 125 1100 0.25 0.1 39
MMBZ5263BL, G 81P 53.20 56 58.80 2.2 150 1300 0.25 0.1 43
MMBZ5264BL, G 81Q 57.00 60 63.00 2.1 170 1400 0.25 0.1 46
MMBZ5265BL, G 81R 58.90 62 65.10 2 185 1400 0.25 0.1 47
MMBZ5266BL, G 81S 64.60 68 71.40 1.8 230 1600 0.25 0.1 52
MMBZ5267BL, G 81T 71.25 75 78.75 1.7 270 1700 0.25 0.1 56
MMBZ5268BL, G 81U 77.90 82 86.10 1.5 330 2000 0.25 0.1 62
MMBZ5270BL, G 81W 86.45 91 95.55 1.4 400 2300 0.25 0.1 69
3. Zener voltage is measured with a pulse test current IZ 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.
MMBZ5221BLT1 Series
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4
TYPICAL CHARACTERISTICS
VZ, TEMPERATURE COEFFICIENT (mV/ C)°θ
VZ, NOMINAL ZENER VOLTAGE (V)
−3
−2
−1
0
1
2
3
4
5
6
7
8
12111098765432
Figure 1. Temperature Coefficients
(Temperature Range −55°C to +150°C)
TYPICAL TC VALUES
FOR MMBZ5221BLT1 SERIES
VZ @ IZT
VZ, TEMPERATURE COEFFICIENT (mV/ C)°θ
100
10
110 100
VZ, NOMINAL ZENER VOLTAGE (V)
Figure 2. Temperature Coefficients
(Temperature Range −55°C to +150°C)
TYPICAL TC VALUES
FOR MMBZ5221BLT1 SERIES
VZ @ IZT
100
VZ, NOMINAL ZENER VOLTAGE
Figure 3. Effect of Zener Voltage on
Zener Impedance
101
ZZT, DYNAMIC IMPEDANCE ( )
1000
100
10
1
TJ = 25°C
IZ(AC) = 0.1 IZ(DC)
f = 1 kHz
IZ = 1 mA
5 mA
20 mA
VF, FORWARD VOLTAGE (V)
Figure 4. Typical Forward Voltage
1.21.11.00.90.80.70.60.50.4
IF, FORWARD CURRENT (mA)
1000
100
10
1
75 V (MMBZ5267BLT1)
91 V (MMBZ5270BLT1)
150°C75°C25°C0°C
MMBZ5221BLT1 Series
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5
TYPICAL CHARACTERISTICS
C, CAPACITANCE (pF)
100
VZ, NOMINAL ZENER VOLTAGE (V)
Figure 5. Typical Capacitance
1000
100
10
1101
BIAS AT
50% OF VZ NOM
TA = 25°C
0 V BIAS
1 V BIAS
12
VZ, ZENER VOLTAGE (V)
100
10
1
0.1
0.01 1086420
TA = 25°C
IZ, ZENER CURRENT (mA)
VZ, ZENER VOLTAGE (V)
100
10
1
0.1
0.0110 30 50 70 90
TA = 25°C
IR, LEAKAGE CURRENT ( A)µ
90
VZ, NOMINAL ZENER VOLTAGE (V)
Figure 6. Typical Leakage Current
1000
100
10
1
0.1
0.01
0.001
0.0001
0.00001 80706050403020100
+150°C
+25°C
−55°C
IZ, ZENER CURRENT (mA)
Figure 7. Zener Voltage versus Zener Current
(VZ Up to 12 V) Figure 8. Zener Voltage versus Zener Current
(12 V to 91 V)
MMBZ5221BLT1 Series
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6
PACKAGE DIMENSIONS
SOT−23 (TO−236)
CASE 318−08
ISSUE AL
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
SOLDERING FOOTPRINT*
mm
inches
SCALE 10:1
0.8
0.031
0.9
0.035
0.95
0.037
0.95
0.037
2.0
0.079
STYLE 8:
PIN 1. ANODE
2. NO CONNECTION
3. CATHODE
bC
L
D
A
E
A1
E
3
12
DIM
AMIN NOM MAX MIN
MILLIMETERS
0.89 1.00 1.11 0.0350
INCHES
A1 0.013 0.06 0.100 0.0005
b0.037 0.44 0.50 0.0150
c0.085 0.132 0.177 0.0034
D2.80 2.90 3.04 0.1102
E1.20 1.30 1.40 0.0472
e1.78 1.90 2.04 0.0701
L0.35 0.54 0.69 0.0140
2.10 2.40 2.64 0.0830
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. MAXIMUM LEAD THICKNESS INCLUDES LEAD
FINISH THICKNESS. MINIMUM LEAD
THICKNESS IS THE MINIMUM THICKNESS OF
BASE MATERIAL.
4. 318−01 THRU −07 AND −09 OBSOLETE, NEW
STANDARD 318−08.
HE
0.0395 0.0440
0.0023 0.0040
0.0175 0.0200
0.0052 0.0070
0.1140 0.1197
0.0512 0.0551
0.0750 0.0807
0.0213 0.0285
0.0940 0.1039
NOM MAX
HE
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MMBZ5221BLT1/D
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