DS31038 Rev. 5 - 2 1 of 3 MMSZ5221BS - MMSZ5259BS
www.diodes.com
·Planar Die Construction
·Ultra-Small Surface Mount Package
·General Purpose
·Ideally suited for Automated Assembly
Processes
Features
Maximum Ratings @ TA = 25°C unless otherwise specified
Characteristic Symbol Value Unit
Forward Voltage (Note 2) @ IF = 10mA VF0.9 V
Power Dissipation (Note 1) Pd200 mW
Thermal Resistance, Junction to Ambient Air (Note 1) RqJA 625 °C/W
Operating and Storage Temperature Range Tj, TSTG -65 to +150 °C
Notes: 1. Part mounted on FR-4 PC board with recommended pad layout, which can be found on our website
at http://www.diodes.com/datasheets/ap02001.pdf.
2. Short duration pulse test used to minimize self-heating effect.
Mechanical Data
MMSZ5221BS - MMSZ5259BS
SURFACE MOUNT ZENER DIODE
A
B
C
D
E
G
H
J
·Case: SOD-323, Plastic
·Case Material - UL Flammability Classification
Rating 94V-0
·Moisture Sensitivity: Level 1 per J-STD-020A
·Terminals: Solderable per MIL-STD-202,
Method 208
·Polarity: Cathode Band
·Marking: See Page 2
·Weight: 0.004 grams (approx.)
SOD-323
Dim Min Max
A 2.30 2.70
B 1.60 1.80
C 1.20 1.40
D 1.05 Typical
E 0.25 0.35
G 0.20 0.40
H 0.10 0.15
J 0.05 Typical
a0°8°
All Dimensions in mm
Notes: 3. For Packaging Details, go to our website at: http://www.diodes.com/datasheets/ap02007.pdf.
*Add “-7” to the appropriate type number in Table 1 above example: 6.2V Zener = MMSZ5234BS-7.
DS31038 Rev. 5 - 2 2 of 3 MMSZ5221BS - MMSZ5259BS
www.diodes.com
Electrical Characteristics @ TA = 25°C unless otherwise specified
Notes: 1. Short duration test pulse used to minimize self-heating effect.
2. f = 1KHz.
Type
Number
Marking
Code
Zener Voltage Range (Note 1) Test
Current
Maximum Zener
Impedance (Note 2)
Maximum Reverse
Leakage Current (Note 1)
VZ @ IZT IZT ZZT @ IZT ZZK @ IZK
= 0.25mA I
R@V
R
Nom (V) Min (V) Max (V) mA WmAV
MMSZ5221BS C1 2.4 2.28 2.52 20 30 1200 100 1.0
MMSZ5223BS C3 2.7 2.57 2.84 20 30 1300 75 1.0
MMSZ5225BS C5 3.0 2.85 3.15 20 30 1600 50 1.0
MMSZ5226BS G1 3.3 3.14 3.47 20 28 1600 25 1.0
MMSZ5227BS G2 3.6 3.42 3.78 20 24 1700 15 1.0
MMSZ5228BS G3 3.9 3.71 4.10 20 23 1900 10 1.0
MMSZ5229BS G4 4.3 4.09 4.52 20 22 2000 5.0 1.0
MMSZ5230BS G5 4.7 4.4 7 4.94 20 19 1900 5.0 2.0
MMSZ5231BS E1 5.1 4.85 5.36 20 17 1600 5.0 2.0
MMSZ5232BS E2 5.6 5.32 5.88 20 11 1600 5.0 3.0
MMSZ5233BS E3 6.0 5.70 6.30 20 7 1600 5.0 3.5
MMSZ5234BS E4 6.2 5.89 6.51 20 7 1000 5.0 4.0
MMSZ5235BS E5 6.8 6.46 7.14 20 5 750 3.0 5.0
MMSZ5236BS F1 7.5 7.13 7.88 20 6 500 3.0 6.0
MMSZ5237BS F2 8.2 7.79 8.61 20 8 500 3.0 6.5
MMSZ5238BS F3 8.7 8.27 9.14 20 8 600 3.0 6.5
MMSZ5239BS F4 9.1 8.65 9.56 20 10 600 3.0 7.0
MMSZ5240BS F5 10 9.50 10.50 20 17 600 3.0 8.0
MMSZ5241BS H1 11 10.45 11.55 20 22 600 2.0 8.4
MMSZ5242BS H2 12 11.40 12.60 20 30 600 1.0 9.1
MMSZ5243BS H3 13 12.35 13.65 9.5 13 600 0.5 9.9
MMSZ5245BS H5 15 14.25 15.75 8.5 16 600 0.1 11
MMSZ5246BS J1 16 15.20 16.80 7.8 17 600 0.1 12
MMSZ5248BS J3 18 17.10 18.90 7.0 21 600 0.1 14
MMSZ5250BS J5 20 19.00 21.00 6.2 25 600 0.1 15
MMSZ5251BS K1 22 20.90 23.10 5.6 29 600 0.1 17
MMSZ5252BS K2 24 22.80 25.20 5.2 33 600 0.1 18
MMSZ5254BS K4 27 25.65 28.35 5.0 41 600 0.1 21
MMSZ5255BS K5 28 26.60 29.40 4.5 44 600 0.1 21
MMSZ5256BS M1 30 28.50 31.50 4.2 49 600 0.1 23
MMSZ5257BS M2 33 31.35 34.65 3.8 58 700 0.1 25
MMSZ5258BS M3 36 34.20 37.80 3.4 70 700 0.1 27
MMSZ5259BS M4 39 37.05 40.95 3.2 80 800 0.1 30
XX = Product Type Marking Code
(See Table Above)
XX
Marking Information
Device Packaging Shipping
(Type Number)-7* SOD-323 3000/Tape & Reel
Ordering Information (Note 3)
DS31038 Rev. 5 - 2 3 of 3 MMSZ5221BS - MMSZ5259BS
www.diodes.com
0
10
20
30
0
I , ZENER CURRENT (mA)
Z
V , ZENER VOLTAGE (V)
Z
Fig. 6 Zener Breakdown Characteristics
10 20 30 4
0
T = 25°C
j
Test current IZ
10
12
18
22
27
33 36
15
39
Nominal Zener Voltage
0
10
20
30
40
50
01 2 3 4 5 6 78910
I , ZENER CURRENT (mA)
Z
V , ZENER VOLTAGE (V)
Z
Fi
g
. 5 Zener Breakdown Characteristics
T = 25°C
j5V6
6V8
8V2
Test Current IZ
20mA
1
10
100
110 100
P ,PEAKSURGEP
O
WER (W)
PK
PULSE WIDTH (ms)
Fig. 4 Maximum Non-repetitive Surge Power
100
0
1
10
100
1000
110100
V , NOMINAL ZENER VOLTAGE (V)
Z
Fi
g
. 3 Zener Impedance vs. Zener Volta
g
e
I = 1.0mA
Z
1
10
100
1000
1 10 100
C,T
O
TAL CAPACITANCE (pF)
T
V , NOMINAL ZENER VOLTAGE (V)
Z
Fig. 2 Typical Capacitance
0V BIAS
f = 1MHz
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)
A
Fig. 1 Power Dissipation vs Ambient Temperature
