CYStech Electronics Corp.
200mW SOD-323 Zener Voltage Regulators
Spec. No. : C326S2-C
Issued Date : 2009.02.16
Revised Date :2015.06.04
Page No. : 1/6
ZD5221AS2 thru ZD5259AS2
Description
The ZD52XXAS2 series zener diodes are packaged in a SOD-323 surface mount package that has a power
dissipation of 200mW. They are designed to provide voltage regulation protection and are especially attractive in
situations where space is at a premium. They are well suited for applications such as cellular phones, hand held
portables, and high density PC boards.
Features
V
Z
tolerance :
±
2%
Standard zener breakdown voltage range : 2.4V to 39V
Steady state power rating of 200mW..
Small body outline dimensions
Low body height : 0.035 inches (0.9mm) max.
Mechanical Data
Case : SOD-323 , molded plastic
Terminals : Solderable per MIL-STD-750 method 2026
Polarity : Cathode indicated by polarity band.
Flammability rating : UL94 V-0
Package weight : approx. 4.507 mg/unit
Mounting position : Any
Ordering Information
Device
ZD52XXAS2-0-T1-G
Package
SOD-323
(Pb-free lead plating and halogen-free package)
Shipping
3000 pcs / tape & reel
Environment friendly grade : S for RoHS compliant products, G for RoHS compliant and
green compound products
Packing spec, T1 : 3000 pcs / tape & reel, 7” reel
Product rank, zero for no rank products
Product name
ZD5221AS2 series
CYStek Product Specification
CYStech Electronics Corp.
Symbol
Outline
Spec. No. : C326S2-C
Issued Date : 2009.02.16
Revised Date :2015.06.04
Page No. : 2/6
-
+
SOD-323
Absolute Maximum Ratings
(Ta=25℃, unless otherwise specified)
Maximum Temperatures
Storage Temperature Tstg.................................................................................................... -65~+150
C
Junction Temperature Tj………………………………………………………………….. -65~ +150
C
Maximum Power Dissipation
Total Power Dissipation Ptot
(Note 1)
........................................................................................ 200 mW
Thermal Resistance, Junction to Ambient Air R
θJA
……………………………………….…….625℃/W
Thermal Resistance, Junction to Case R
θJC
……………………………………….……………..400℃/W
Note 1: Parts mounted on ceramic board with area of 25mm².
Electrical Characteristics
(T
A
=25℃ unless otherwise noted, V
F
=0.9V Max @I
F
=10mA for all types.)
Symbol
V
Z
I
ZT
Z
ZT
I
ZK
Z
ZK
I
R
V
R
Reverse current
Maximum zener impedance @ I
ZT
Reverse current
Maximum zener impedance @ I
ZK
Reverse leakage current @ V
R
Reverse voltage
Parameter
Reverse zener voltage @ I
ZT
ZD5221AS2 series
CYStek Product Specification
CYStech Electronics Corp.
Zener voltage(
Note 2
)
Device
Marking
Code
min
2.35
2.65
2.94
3.23
3.53
3.82
4.21
4.61
5.00
5.49
5.88
6.08
6.66
7.35
8.04
8.53
8.92
9.80
10.78
11.76
12.74
14.70
15.68
17.64
19.60
21.56
23.52
26.46
27.44
29.40
32.34
35.28
38.22
V
Z
(volts)
nom
2.4
2.7
3.0
3.3
3.6
3.9
4.3
4.7
5.1
5.6
6.0
6.2
6.8
7.5
8.2
8.7
9.1
10
11
12
13
15
16
18
20
22
24
27
28
30
33
36
39
max
2.45
2.75
3.06
3.37
3.67
3.98
4.39
4.79
5.20
5.71
6.12
6.32
6.94
7.65
8.36
8.87
9.28
10.20
11.22
12.24
13.26
15.30
16.32
18.36
20.40
22.44
24.48
27.54
28.56
30.60
33.66
36.72
39.78
@I
ZT
mA
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
9.5
8.5
7.8
7.0
6.2
5.6
5.2
5.0
4.5
4.2
3.8
3.4
3.2
Maximum Zener
impedance
Z
ZT
@
I
ZT
Ω
30
30
30
28
24
23
22
19
17
11
7
7
5
6
8
8
10
17
22
30
13
16
17
21
25
29
33
41
44
49
58
70
80
Z
ZK
@I
ZK
Ω
1200
1300
1600
1600
1700
1900
2000
1900
1600
1600
1600
1000
750
500
500
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
700
700
800
Spec. No. : C326S2-C
Issued Date : 2009.02.16
Revised Date :2015.06.04
Page No. : 3/6
Maximum
Reverse Leakage
Current
I
R
@V
R
μA
100
75
50
25
15
10
5
5
5
5
5
5
3
3
3
3
3
3
2
1
0.5
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
V
1.0
1.0
1.0
1.0
1.0
1.0
1.0
2.0
2.0
3.0
3.5
4.0
5.0
6.0
6.5
6.5
7.0
8.0
8.4
9.1
9.9
11
12
14
15
17
18
21
21
23
25
27
30
ZD5221A
ZD5223A
ZD5225A
ZD5226A
ZD5227A
ZD5228A
ZD5229A
ZD5230A
ZD5231A
ZD5232A
ZD5233A
ZD5234A
ZD5235A
ZD5236A
ZD5237A
ZD5238A
ZD5239A
ZD5240A
ZD5241A
ZD5242A
ZD5243A
ZD5245A
ZD5246A
ZD5248A
ZD5250A
ZD5251A
ZD5252A
ZD5254A
ZD5255A
ZD5256A
ZD5257A
ZD5258A
ZD5259A
C1
C3
C5
G1
G2
G3
G4
G5
E1
E2
E3
E4
E5
F1
F2
F3
F4
F5
H1
H2
H3
H5
J1
J3
J5
K1
K2
K4
K5
M1
M2
M3
M4
mA
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
Note 2: Zener voltage is measured with a pulse test current I
Z
at an ambient temperature of 25℃.
ZD5221AS2 series
CYStek Product Specification
CYStech Electronics Corp.
Reel Dimension
Spec. No. : C326S2-C
Issued Date : 2009.02.16
Revised Date :2015.06.04
Page No. : 4/6
Carrier Tape Dimension
ZD5221AS2 series
CYStek Product Specification
CYStech Electronics Corp.
Recommended wave soldering condition
Product
Pb-free devices
Peak Temperature
260 +0/-5
C
Spec. No. : C326S2-C
Issued Date : 2009.02.16
Revised Date :2015.06.04
Page No. : 5/6
Soldering Time
5 +1/-1 seconds
Recommended temperature profile for IR reflow
Profile feature
Average ramp-up rate
(Tsmax to Tp)
Preheat
−Temperature Min(T
S
min)
−Temperature Max(T
S
max)
−Time(ts
min
to ts
max
)
Time maintained above:
−Temperature (T
L
)
− Time (t
L
)
Peak Temperature(T
P
)
Time within 5C of actual peak
temperature(tp)
Ramp down rate
Time 25
C
to peak temperature
Sn-Pb eutectic Assembly
3C/second max.
100C
150C
60-120 seconds
183C
60-150 seconds
240 +0/-5
C
10-30 seconds
6C/second max.
6 minutes max.
Pb-free Assembly
3C/second max.
150C
200C
60-180 seconds
217C
60-150 seconds
260 +0/-5
C
20-40 seconds
6C/second max.
8 minutes max.
Note : All temperatures refer to topside of the package, measured on the package body surface.
ZD5221AS2 series
CYStek Product Specification
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