Semiconductor Components Industries, LLC, 2002
June, 2002 – Rev. 3 1Publication Order Number:
MMBZ5221BLT1/D
MMBZ5221BLT1 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.
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
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: UL94 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
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
xxx = Specific Device Code
M = Date Code
xxx
†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.
http://onsemi.com
*MMBZ5233BLT1, MMBZ5246BLT1,
MMBZ5251BLT1, and MMBZ5252BLT1 Not Avail-
able in 10,000/Tape & Reel.
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
MMBZ5221BLT1 18A 2.28 2.4 2.52 20 30 1200 0.25 100 1
MMBZ5222BLT1 18B 2.37 2.5 2.63 20 30 1250 0.25 100 1
MMBZ5223BLT1 18C 2.56 2.7 2.84 20 30 1300 0.25 75 1
MMBZ5224BLT1 18D 2.66 2.8 2.94 20 30 1400 0.25 75 1
MMBZ5225BLT1 18E 2.85 3 3.15 20 29 1600 0.25 50 1
MMBZ5226BLT1 8A 3.13 3.3 3.47 20 28 1600 0.25 25 1
MMBZ5227BLT1 8B 3.42 3.6 3.78 20 24 1700 0.25 15 1
MMBZ5228BLT1 8C 3.70 3.9 4.10 20 23 1900 0.25 10 1
MMBZ5229BLT1 8D 4.08 4.3 4.52 20 22 2000 0.25 5 1
MMBZ5230BLT1 8E 4.46 4.7 4.94 20 19 1900 0.25 5 2
MMBZ5231BLT1 8F 4.84 5.1 5.36 20 17 1600 0.25 5 2
MMBZ5232BLT1 8G 5.32 5.6 5.88 20 11 1600 0.25 5 3
MMBZ5233BLT1* 8H 5.70 6 6.30 20 7 1600 0.25 5 3.5
MMBZ5234BLT1 8J 5.89 6.2 6.51 20 7 1000 0.25 5 4
MMBZ5235BLT1 8K 6.46 6.8 7.14 20 5 750 0.25 3 5
MMBZ5236BLT1 8L 7.12 7.5 7.88 20 6 500 0.25 3 6
MMBZ5237BLT1 8M 7.79 8.2 8.61 20 8 500 0.25 3 6.5
MMBZ5238BLT1 8N 8.26 8.7 9.14 20 8 600 0.25 3 6.5
MMBZ5239BLT1 8P 8.64 9.1 9.56 20 10 600 0.25 3 7
MMBZ5240BLT1 8Q 9.50 10 10.50 20 17 600 0.25 3 8
MMBZ5241BLT1 8R 10.4 11 11.55 20 22 600 0.25 2 8.4
MMBZ5242BLT1 8S 11.40 12 12.60 20 30 600 0.25 1 9.1
MMBZ5243BLT1 8T 12.35 13 13.65 9.5 13 600 0.25 0.5 9.9
MMBZ5244BLT1 8U 13.30 14 14.70 9 15 600 0.25 0.1 10
MMBZ5245BLT1 8V 14.25 15 15.75 8.5 16 600 0.25 0.1 11
MMBZ5246BLT1* 8W 15.20 16 16.80 7.8 17 600 0.25 0.1 12
MMBZ5247BLT1 8X 16.15 17 17.85 7.4 19 600 0.25 0.1 13
MMBZ5248BLT1 8Y 17.10 18 18.90 7 21 600 0.25 0.1 14
MMBZ5249BLT1 8Z 18.05 19 19.95 6.6 23 600 0.25 0.1 14
MMBZ5250BLT1 81A 19.00 20 21.00 6.2 25 600 0.25 0.1 15
MMBZ5251BLT1* 81B 20.90 22 23.10 5.6 29 600 0.25 0.1 17
MMBZ5252BLT1* 81C 22.80 24 25.20 5.2 33 600 0.25 0.1 18
MMBZ5253BLT1 81D 23.75 25 26.25 5 35 600 0.25 0.1 19
MMBZ5254BLT1 81E 25.65 27 28.35 4.6 41 600 0.25 0.1 21
MMBZ5255BLT1 81F 26.60 28 29.40 4.5 44 600 0.25 0.1 21
MMBZ5256BLT1 81G 28.50 30 31.50 4.2 49 600 0.25 0.1 23
MMBZ5257BLT1 81H 31.35 33 34.65 3.8 58 700 0.25 0.1 25
MMBZ5258BLT1 81J 34.20 36 37.80 3.4 70 700 0.25 0.1 27
MMBZ5259BLT1 81K 37.05 39 40.95 3.2 80 800 0.25 0.1 30
MMBZ5260BLT1 81L 40.85 43 45.15 3 93 900 0.25 0.1 33
MMBZ5261BLT1 81M 44.65 47 49.35 2.7 105 1000 0.25 0.1 36
MMBZ5262BLT1 81N 48.45 51 53.55 2.5 125 1100 0.25 0.1 39
MMBZ5263BLT1 81P 53.20 56 58.80 2.2 150 1300 0.25 0.1 43
MMBZ5264BLT1 81Q 57.00 60 63.00 2.1 170 1400 0.25 0.1 46
MMBZ5265BLT1 81R 58.90 62 65.10 2 185 1400 0.25 0.1 47
MMBZ5266BLT1 81S 64.60 68 71.40 1.8 230 1600 0.25 0.1 52
MMBZ5267BLT1 81T 71.25 75 78.75 1.7 270 1700 0.25 0.1 56
MMBZ5268BLT1 81U 77.90 82 86.10 1.5 330 2000 0.25 0.1 62
MMBZ5269BLT1 81V 82.65 87 91.35 1.4 370 2200 0.25 0.1 68
MMBZ5270BLT1 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
*Not Available in the 10,0000/Tape & Reel.
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 ( )Ω
1000
100
10
1
TJ = 25C
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)
150C75°C 25°C 0°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
0.01 10 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
+150C
+25C
–55C
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–236AB
CASE 318–08
ISSUE AH
DJ
K
L
A
C
BS
H
GV
3
12
DIM
A
MIN MAX MIN MAX
MILLIMETERS
0.1102 0.1197 2.80 3.04
INCHES
B0.0472 0.0551 1.20 1.40
C0.0350 0.0440 0.89 1.11
D0.0150 0.0200 0.37 0.50
G0.0701 0.0807 1.78 2.04
H0.0005 0.0040 0.013 0.100
J0.0034 0.0070 0.085 0.177
K0.0140 0.0285 0.35 0.69
L0.0350 0.0401 0.89 1.02
S0.0830 0.1039 2.10 2.64
V0.0177 0.0236 0.45 0.60
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. 318-03 AND -07 OBSOLETE, NEW STANDARD
318-08.
MMBZ5221BLT1 Series
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7
Notes
MMBZ5221BLT1 Series
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8
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PUBLICATION ORDERING INFORMATION
JAPAN: ON Semiconductor, Japan Customer Focus Center
4–32–1 Nishi–Gotanda, Shinagawa–ku, Tokyo, Japan 141–0031
Phone: 81–3–5740–2700
Email: r14525@onsemi.com
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For additional information, please contact your local
Sales Representative.
MMBZ5221BLT1/D
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