MMBZ5221B - MMBZ5259B
350mW SURFACE MOUNT ZENER DIODE
·Planar Die Construction
·350mW Power Dissipation on FR-4 PCB
·General Purpose, Medium Current
·Ideally Suited for Automated Assembly
Processes
Features
Maximum Ratings @ TA= 25°C unless otherwise specified
Characteristic Symbol Value Unit
Forward Voltage @ IF= 10mA VF0.9 V
Power Dissipation (Note 1) Pd350 mW
Thermal Resistance, Junction to Ambient Air (Note 1) RqJA 357 K/W
Operating and Storage Temperature Range Tj, TSTG -65 to +150 °C
Notes: 1. Valid provided that device terminals are kept at ambient temperature.
2. Tested with pulses, Tp£1.0ms.
·Case: SOT-23, Molded Plastic
·Terminals: Solderable per MIL-STD-202,
Method 208
·Polarity: See Diagram
·Marking: Marking Code (See Table on Page 2)
·Weight: 0.008 grams (approx.)
Mechanical Data
A
E
JL
TOP VIEW
M
B
C
H
G
D
K
SOT-23
Dim Min Max
A0.37 0.51
B1.19 1.40
C2.10 2.50
D0.89 1.05
E0.45 0.61
G1.78 2.05
H2.65 3.05
J0.013 0.15
K0.89 1.10
L0.45 0.61
M0.076 0.178
All Dimensions in mm



SENSITRON
SEMICONDUCTOR
221 West Industr y Court ! Deer Park, NY 11729-4681 ! (631) 586- 7600 FAX (631) 242-9798
World Wid e We b Site - http: //www.se nsitro n.c om E-Mail Address - sales@sensitr on. com
Data Sheet 2675, Rev. -
Type
Number
Type
Code
Zener Voltage Range (Note 2) Maximum Zener
Impedance
Maximum Reverse
Leakage Current
VZ@I
ZT IZT ZZT @ IZT ZZK @I
ZK
= 0.25mA IR@V
R
Nom (V) Min (V) Max (V) mA WmAV
MMBZ5221B KC1 2.4 2.28 2.52 20 30 1200 100 1.0
MMBZ5223B KC3 2.7 2.57 2.84 20 30 1300 75 1.0
MMBZ5225B KC5 3.0 2.85 3.15 20 30 1600 50 1.0
MMBZ5226B KG1/8A 3.3 3.14 3.47 20 28 1600 25 1.0
MMBZ5227B KG2/8B 3.6 3.42 3.78 20 24 1700 15 1.0
MMBZ5228B KG3/8C 3.9 3.71 4.10 20 23 1900 10 1.0
MMBZ5229B KG4/8D 4.3 4.09 4.52 20 22 2000 5.0 1.0
MMBZ5230B KG5/8E 4.7 4.4 7 4.94 20 19 1900 5.0 2.0
MMBZ5231B KE1/8F 5.1 4.85 5.36 20 17 1600 5.0 2.0
MMBZ5232B KE2/8G 5.6 5.32 5.88 20 11 1600 5.0 3.0
MMBZ5233B KE3 6.0 5.70 6.30 20 7 1600 5.0 3.5
MMBZ5234B KE4/8J 6.2 5.89 6.51 20 7 1000 5.0 4.0
MMBZ5235B KE5/8K 6.8 6.46 7.14 20 5 750 3.0 5.0
MMBZ5236B KF1/8L 7.5 7.13 7.88 20 6 500 3.0 6.0
MMBZ5237B KF2/8M 8.2 7.79 8.61 20 8 500 3.0 6.5
MMBZ5238B KF3 8.7 8.27 9.14 20 8 600 3.0 6.5
MMBZ5239B KF4/8P 9.1 8.65 9.56 20 10 600 3.0 7.0
MMBZ5240B KF5/8Q 10 9.50 10.50 20 17 600 3.0 8.0
MMBZ5241B KH1/8R 11 10.45 11.55 20 22 600 2.0 8.4
MMBZ5242B KH2/8S 12 11.40 12.60 20 30 600 1.0 9.1
MMBZ5243B KH3/8T 13 12.35 13.65 9.5 13 600 0.5 9.9
MMBZ5245B KH5/8V 15 14.25 15.75 8.5 16 600 0.1 11
MMBZ5246B KJ1/8W 16 15.20 16.80 7.8 17 600 0.1 12
MMBZ5248B KJ3/8Y 18 17.10 18.90 7.0 21 600 0.1 14
MMBZ5250B KJ5/81A 20 19.00 21.00 6.2 25 600 0.1 15
MMBZ5251B KK1/81B 22 20.90 23.10 5.6 29 600 0.1 17
MMBZ5252B KK2/81C 24 22.80 25.20 5.2 33 600 0.1 18
MMBZ5254B KK4/81E 27 25.65 28.35 5.0 41 600 0.1 21
MMBZ5255B KK5 28 26.60 29.40 4.5 44 600 0.1 21
MMBZ5256B KM1/81G 30 28.50 31.50 4.2 49 600 0.1 23
MMBZ5257B KM2/81H 33 31.35 34.65 3.8 58 700 0.1 25
MMBZ5258B KM3 36 34.20 37.80 3.4 70 700 0.1 27
MMBZ5259B KM4 39 37.05 40.95 3.2 80 800 0.1 30
Electrical Characteristics @ TA= 25°C unless otherwise specified
Notes: 1. Valid provided that device terminals are kept at ambient temperature.
2. Tested with pulses, Tp£1.0ms.



SENSITRON
SEMICONDUCTOR
221 West Industr y Court ! Deer Park, NY 11729-4681 ! (631) 586- 7600 FAX (631) 242-9798
World Wid e We b Site - http: //www.se nsitro n.c om E-Mail Address - sales@sensitr on. com
Data Sheet 2675, Rev. -
MMBZ5221B - MMBZ5259B
350mW SURFACE MOUNT ZENER DIODE
0
0.1
0.2
0.3
0.4
25
0
50 75 100 125
150
P,P
O
WER DISSIPATI
O
N(W)
D
T , AMBIENT TEMPERATURE ( C)
Fig. 1 Power Dissipation vs Ambient Temperature
A°



SENSITRON
SEMICONDUCTOR
221 West Industr y Court ! Deer Park, NY 11729-4681 ! (631) 586- 7600 FAX (631) 242-9798
World Wid e We b Site - http: //www.se nsitro n.c om E-Mail Address - sales@sensitr on. com
Data Sheet 2675, Rev. -
MMBZ5221B - MMBZ5259B
350mW SURFACE MOUNT ZENER DIODE
221 West Industry Court Deer Park, NY 11729-4681 (631) 586-7600 FAX (631) 242-9798
World Wide Web - http://www.sensitron.com E-Mail Address - sales@sensitron.com
SENSITRON
SEMICONDUCTOR
TECHNICAL DATA
DISCLAIMER:
1- The information given herein, including the specifications and dimensions, is subject to change without prior notice to improve product
characteristics. Before ordering, purchasers are advised to contact the Sensitron Semiconductor sales department for the latest version
of the datasheet(s).
2- In cases where extremely high reliability is required (such as use in nuclear power control, aerospace and aviation, traffic equipment,
medical equipment, and safety equipment), safety should be ensured by using semiconductor devices that feature assured safety or by
means of users’ fail-safe precautions or other arrangement.
3- In no event shall Sensitron Semiconductor be liable for any damages that may result from an accident or any other cause during
operation of the user’s units according to the datasheet(s). Sensitron Semiconductor assumes no responsibility for any intellectual
property claims or any other problems that ma y result from applications of information, products or circuits described in the datasheets.
4- In no event shall Sensitron Semiconductor be liable for any failure in a semiconductor device or any secondary damage resulting from
use at a value exceeding the absolute maximum rating.
5- No license is granted by the datasheet(s) under any patents or other rights of any third party or Sensitron Semiconductor.
6- The datasheet(s) may not be reproduced or duplicated, in any form, in whole or part, without the expressed written permission of
Sensitron Semiconductor.
7- The products (technologies) described in the datasheet(s) are not to be provided to any party whose purpose in their application will
hinder maintenance of international peace and safety nor are they to be applied to that purpose by their direct purchasers or any third
party. When exporting these products (technologies), the necessary procedures are to be taken in accordance with related laws and
regulations.