Surface Mount Zener Diodes
*500mw Power Dissipation
*Ideal for Surface Mountted Application
*Case : SOD-123 Molded plastic
Mechanical Data:
Features:
WEITRON
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MMSZ5221B Series
SMALL SIGNAL
ZENER DIODES
500m WATTS
*Zener Breakdown Voltage Range 2.4V to 110V
*Terminals: Solderable per MIL-STD-202, Method 208
*Polarity: Cathode Indicated by Polarity Band
*Marking: Marking Code (See Table on Page 3)
*Weigh: 0.01grams(approx)
SOD-123
1
2
SOD-123 Outline Dimensions
Unit:mm
Dim
A
B
C
D
E
H
J
K
Min
2.55
1.40
0.95
0.50
-
-
3.55
Max
2.85
1.80
1.35
0.70
0.10
0.15
3.85
SOD-123
0.30 REF
PIN 1. CATHODE
2. ANODE
MMSZ5221B Series
WEITRON
Maximum Ratings and Electrical Characteristics
Characteristics
Symbol
Unit
Total Power Dissipation on FR-5 Board
@T =75 C
Thermal Resistance Junction to Ambient Air
Forward Voltage @ IF=10mA
Junction and Storage Temperature Range
V
C/W
NOTES:1. FR-5=3.5 1.5inches, using the on minimum recommedned footprint.
C
R JA
WEITRON
http://www.weitron.com.tw
(1)
(2)
PD
VF
Tj,TSTG
Value
500
340
0.9
-65 to+150
mW
(TA=25 C Unless Otherwise Noted)
L
Zener Voltage Regulator
I
F
V
I
I
R
I
ZT
V
R
V
Z
V
F
ELECTRICAL CHARACTERISTICS
Device Marking
(T
A
= 25 C unless otherwise noted, V
F
= 0.9 V Max. @ I
F
= 10 mA)
Symbol
Parameter
V
Z
R everse Zener Voltage @ I
ZT
I
ZT
R everse C urrent
Z
ZT
Maximum Zener Impedance @ I
ZT
I
R
R everse Leakage C urrent @ V
R
V
R
R everse Voltage
I
F
F orward C urrent
V
F
F orward Voltage @ I
F
Zzk
Izk
Item
MMSZ5221B
Series
Marking
XX=Specific Device Code
(See Table on page3)
Equivalent Circuit Diagram
1
2
Cathode
Anode
2. Thermal Resistance measurement obtained via infrared scan method.
R everse C urrent
Maximun Zener Impedance @ Izk
--
WEITRON
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MMSZ5221B Series
E L E C T R IC A L C HA R A C T E R IS T IC S
(T
A
= 25 C unless otherwise noted, V
F
= 0.9 V Max. @ I
F
= 10 mA)
Zener Voltage (Notes 3 and 4)
Zener Impedance (Note 5)
L eakage C urrent
Device
V
Z
(Volts )
@ I
ZT
Z
ZT
@ I
ZT
Z
ZK
@ I
ZK
I
R
@ V
R
Device
Device
Marking
Min
Nom
Max
mA
mA
uA
Volts
MMS Z5221B
C 1
2.28
2.4
2.52
20
30
1200
0.25
100
1
MMS Z5222B
C 2
2.38
2.5
2.63
20
30
1250
0.25
100
1
MMS Z5223B
C 3
2.57
2.7
2.84
20
30
1300
0.25
75
1
MMS Z5224B
C 4
2.66
2.8
2.94
20
30
1400
0.25
75
1
MMS Z5225B
C 5
2.85
3.0
3.15
20
29
1600
0.25
50
1
MMS Z5226B
D1
3.14
3.3
3.47
20
28
1600
0.25
25
1
MMS Z5227B
D2
3.42
3.6
3.78
20
24
1700
0.25
15
1
MMS Z5228B
D3
3.71
3.9
4.10
20
23
1900
0.25
10
1
MMS Z5229B
D4
4.09
4.3
4.52
20
22
2000
0.25
5
1
MMS Z5230B
D5
4.47
4.7
4.94
20
19
1900
0.25
5
2
MMS Z5231B
E 1
4.85
5.1
5.36
20
17
1600
0.25
5
2
MMS Z5232B
E 2
5.32
5.6
5.88
20
11
1600
0.25
5
3
MMS Z5233B
E 3
5.70
6.0
6.30
20
7
1600
0.25
5
3.5
MMS Z5234B
E 4
5.89
6.2
6.51
20
7
1000
0.25
5
4
MMS Z5235B
E 5
6.46
6.8
7.14
20
5
750
0.25
3
5
MMS Z5236B
F 1
7.13
7.5
7.88
20
6
500
0.25
3
6
MMS Z5237B
F 2
7.79
8.2
8.61
20
8
500
0.25
3
6.5
MMS Z5238B
F 3
8.27
8.7
9.14
20
8
600
0.25
3
6.5
MMS Z5239B
F 4
8.65
9.1
9.56
20
10
600
0.25
3
7
MMS Z5240B
F 5
9.50
10
10.50
20
17
600
0.25
3
8
MMS Z5241B
H1
10.45
11
11.55
20
22
600
0.25
2
8.4
MMS Z5242B
H2
1
1.40
12
12.60
20
30
600
0.25
1
9.1
MMS Z5243B
H3
12.35
13
13.65
9.5
13
600
0.25
0.5
9.9
MMS Z5244B
H4
13.30
14
14.70
9.0
15
600
0.25
0.1
10
MMS Z5245B
H5
14.25
15
15.75
8.5
16
600
0.25
0.1
11
MMS Z5246B
J 1
15.20
16
16.80
7.8
17
600
0.25
0.1
12
MMS Z5247B
J 2
16.15
17
17.85
7.4
19
600
0.25
0.1
13
MMS Z5248B
J 3
17.10
18
18.90
7.0
21
600
0.25
0.1
14
MMS Z5250B
J 5
19.00
20
21.00
6.2
25
600
0.25
0.1
15
MMS Z5251B
K 1
20.90
22
23.10
5.6
29
600
0.25
0.1
17
MMS Z5252B
K 2
22.80
24
25.20
5.2
33
600
0.25
0.1
18
MMS Z5253B
K 3
23.75
25
26.25
5.0
35
600
0.25
0.1
19
MMS Z5254B
K 4
25.65
27
28.35
4.6
41
600
0.25
0.1
21
MMS Z5255B
K 5
26.60
28
29.40
4.5
44
600
0.25
0.1
21
MMS Z5256B
M1
28.50
30
31.50
4.2
49
600
0.25
0.1
23
MMS Z5257B
M2
31.35
33
34.65
3.8
58
700
0.25
0.1
25
MMS Z5258B
M3
34.20
36
37.80
3.4
70
700
0.25
0.1
27
MMS Z5259B
M4
37.05
39
40.95
3.2
80
800
0.25
0.1
30
MMS Z5260B
M5
40.85
43
45.15
3.0
93
900
0.25
0.1
33
MMS Z5261B
N1
44.65
47
49.35
2.7
105
1000
0.25
0.1
36
MMS Z5262B
N2
48.45
51
53.55
2.5
125
1100
0.25
0.1
39
MMS Z5263B
N3
53.20
56
58.80
2.2
150
1300
0.25
0.1
43
MMS Z5264B
N4
57.00
60
63.00
2.1
170
1400
0.25
0.1
46
MMS Z5265B
N5
58.90
62
65.10
2.0
185
1400
0.25
0.1
47
MMS Z5266B
P 1
64.60
68
71.40
1.8
230
1600
0.25
0.1
52
MMS Z5267B
P 2
71.25
75
78.75
1.7
270
1700
0.25
0.1
56
MMS Z5268B
P 3
77.90
82
86.10
1.5
330
2000
0.25
0.1
62
MMS Z5269B
P 4
82.65
87
91.35
1.4
370
2200
0.25
0.1
68
MMS Z5270B
P 5
86.45
91
95.55
1.4
400
2300
0.25
0.1
69
MMS Z5272B
R 2
104.5
110
115.5
1.1
750
3000
0.25
0.1
84
3. T he type numbers shown have a standard tolerance of + 5% on the nominal Zener voltage.
4. Nominal Zener voltage is measured with the device junction in thermal equilibrium at T
L
= 30 C 1 C
5. Z
ZT
and Z
ZK
are measured by dividing the AC voltage drop across the device by the ac current applied.
T he specified limits are for I
Z(AC )
= 0.1 I
Z(dc)
with the AC frequency = 1 K Hz.
+
-
-
NOTE :
MMSZ5221B Series
WEITRON
http://www.weitron.com.tw
V
Z
, NOMINAL ZE NE R VOLTAG E (V)
- 3
- 2
-1
0
1
2
3
4
5
6
7
8
12
11
10
9
8
7
6
5
4
3
2
F igure 1. T emperature C oefficients
(Temperature R ange - 55 C to +150 C )
T Y P IC AL T
C
VALUE S
F OR MMS Z5221B T 1 S E R IE S
V
Z
@ I
ZT
100
10
1
10
100
V
Z
, NOMINAL ZE NE R VOLTAG E (V)
F igure 2. Temperature C oefficients
(Temperature R ange - 55 C to +150 C )
V
Z
@ I
ZT
1.2
1.0
0.8
0.6
0.4
0.2
0
150
125
100
75
50
25
0
T, T E MP E R AT UR E ( C )
F igure 3. S teady S tate P ower Derating
P
D
versus T
A
P
D
versus T
L
0.1
P W, P ULS E WIDT H (ms)
F igure 4. Maximum Nonrepetitive S urge P ower
1
10
100
1000
1000
100
10
1
R E C TANG ULAR
WAV E F OR M, T
A
= 25 C
100
V
Z
, NOMINAL ZE NE R VOLTAG E
F igure 5. E ffect of Zener Voltage on
Zener Impedance
10
1
1000
100
10
1
T
J
= 25 C
I
Z(AC )
= 0.1 I
Z(DC )
f = 1 kHz
I
Z
= 1 mA
5 mA
20 mA
V
F
, F OR WAR D V OLTAG E (V )
F igure 6. Typical F orward Voltage
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
1000
100
10
1
75 V (MMS Z5267B T 1)
91 V (MMS Z5270B T 1)
150 C
75 C 25 C
0 C
T Y P IC AL T
C
VALUE S
F OR MMS Z5221B T 1 S E R IE S
q
V
Z
,
T
E
M
P
E
R
A
T
U
R
E
C
O
E
F
F
I
C
I
E
N
T
(
m
V
/
C
)
V
Z
,
T
E
M
P
E
R
A
T
U
R
E
C
O
E
F
F
I
C
I
E
N
T
(
m
V
/
C
)
P
p
k
,
P
E
A
K
S
U
R
G
E
P
O
W
E
R
(
W
A
T
T
S
)
Z
Z
T
,
D
Y
N
A
M
I
C
I
M
P
E
D
A
N
C
E
(
W
)
I
F
,
F
O
R
W
A
R
D
C
U
R
R
E
N
T
(
m
A
)
TYPICAL CHARACTERISTICS
MMSZ5221B Series
WEITRON
http://www.weitron.com.tw
T Y P IC A L C HA R A C T E R IS T IC S
C
,
C
A
P
A
C
I
T
A
N
C
E
(
p
F
)
100
V
Z
, NOMINAL ZE NE R VOLTAG E (V)
F igure 7. Typical C apacitance
1000
100
10
1
10
1
B IAS AT
50% OF V
Z
NOM
T
A
= 25 C
0 V B IAS
1 V B IAS
12
V
Z
, ZE NE R VOLTAG E (V)
100
10
1
0.1
0.01
10
8
6
4
2
0
T
A
= 25 C
V
Z
, ZE NE R VOLTAG E (V)
100
10
1
0.1
0.01
10
30
50
70
90
T
A
= 25 C
90
V
Z
, NOMINAL ZE NE R VOLTAG E (V)
F igure 8. Typical L eakage C urrent
1000
100
10
1
0.1
0.01
0.001
0.0001
0.00001
80
70
60
50
40
30
20
10
0
+150 C
+ 25 C
- 55 C
F igure 9. Zener Voltage vers us Zener C urrent
(V
Z
Up to 12 V )
F igure 10. Zener Voltage vers us Zener C urrent
(12 V to 91 V )
I
R
,
L
E
A
K
A
G
E
C
U
R
R
E
N
T
(
A
)
I
Z
,
Z
E
N
E
R
C
U
R
R
E
N
T
(
m
A
)
I
Z
,
Z
E
N
E
R
C
U
R
R
E
N
T
(
m
A
)
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