Solid State Devices, Inc.
14701 Firestone Blvd * La Mirada, Ca 90638
Phone: (562) 404-4474 * Fax: (562) 404-1773
ssdi@ssdi-power.com * www.ssdi-power.com
SZ25A2.4
thru
SZ25A43
250mW and 400mW
2.4 – 43 VOLTS
ZENER DIODES
DESIGNER’S DATA SHEET
FEATURES:
Hermetically Sealed in Glass
Axial Lead Rated at 250 mW
Surface Mount Rated at 400 mW
Available in Axial (__), Round Tab Surface Mount (SM)
and Square Tab Surface Mount (SMS) Versions
Available to TX, TXV, and Space Levels
5/
Available in 10% and 5% Tolerances. For other Voltage
Tolerances, Contact Factory.
Maximum Ratings
Nominal Zener Voltage
Zener Current
Continuous Power
Axial
SM, SMS
Axial
SM, SMS
Symbol
Value
Units
V
Z
I
ZM
P
D
Top,
Tstg
R
θJL
R
θJE
R
θJA
2.4 - 43
5.5 - 95
8.25 – 142.5
250
400
-65 to +175
500
300
600
V
mA
mW
AXIAL (__)
ºC
ºC/W
DIM
A
B
C
D
MIN.
.060”
.120”
1.00”
.018”
MAX
.090”
.200”
---
.022”
All dimensions are prior to soldering
Operating and Storage Temp.
Thermal Resistance,
Junction to Lead, L=3/8” (for Axial)
Junction to End Cap (for SM, SMS)
Junction to Ambient (for All)
Part Number/Ordering Information
4/
SZ25
__
__
__ __
5/
│
│
│
└
Screening
__
= Not Screened
│
│
│
TX = TX Level
│
│
│
TXV = TXV
│
│
│
S = S Level (for
│
│
│
SM, use –S)
│
│
└
3/
Package Type
│
│
__
= Axial Leaded
│
│
SM = Surface Mount Round Tab
│
│
SMS = Surface Mount Square Tab
│
│
└
Voltage/Family
│
2.4 thru 43 = 2.4V thru 43V, See Table on Page 2
│
│
└
Voltage Tolerance
A = 10% Voltage Tolerance
B = 5% Voltage Tolerance
DIM
A
B
C
D
MIN.
.057”
.130”
.010”
Body to Tab Clearance: .001”
MAX.
.067”
.146”
.022”
ROUND TAB (SM)
All dimensions are prior to soldering
DIM
A
B
C
D
MIN.
.070”
.175”
.023”
Body to Tab Clearance: .001”
MAX.
.078”
.210”
.027”
SQUARE TAB (SMS)
All dimensions are prior to soldering
NOTE:
All specifications are subject to change without notification.
SCD's for these devices should be reviewed by SSDI prior to release.
DATA SHEET #: Z00001M
DOC
Solid State Devices, Inc.
14701 Firestone Blvd * La Mirada, Ca 90638
Phone: (562) 404-4474 * Fax: (562) 404-1773
ssdi@ssdi-power.com * www.ssdi-power.com
SZ25A2.4
thru
SZ25A43
Zener
Test
Current
Maximum
Zener
Impedance
(note 2)
IR @
VR
μA
100
75
50
25
15
10
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
0.1
0.1
0.1
0.1
0.1
Electrical Characteristics @
25°C (Unless Otherwise Specified)
PART
NUMBER
6/
Nominal
Zener
Voltage
(note 1)
Maximum Reverse
Leakage Current
Maximum Continuous
Current
Axial (L)
Surface Mount
(SM) and (SMS)
IZM
mA
142.5
135.0
127.5
120.0
112.5
105.0
97.5
90.0
82.5
75.0
67.5
52.5
47.7
43.5
41.1
39.3
37.2
32.4
30.6
28.5
26.25
24.45
23.10
21.75
19.80
18.75
17.85
16.20
14.85
14.25
13.20
12.75
11.85
10.80
9.90
9.15
8.25
Voltage Tolerance
10%
SZ25A2.4
SZ25A2.7
SZ25A3.0
SZ25A3.3
SZ25A3.6
SZ25A3.9
SZ25A4.3
SZ25A4.7
SZ25A5.1
SZ25A5.6
SZ25A6.2
SZ25A6.8
SZ25A7.5
SZ25A8.2
SZ25A8.7
SZ25A9.1
SZ25A10
SZ25A11
SZ25A12
SZ25A13
SZ25A14
SZ25A15
SZ25A16
SZ25A17
SZ25A18
SZ25A19
SZ25A20
SZ25A22
SZ25A24
SZ25A25
SZ25A27
SZ25A28
SZ25A30
SZ25A33
SZ25A36
SZ25A39
SZ25A43
VZ @ IZT
Volts
2.4
2.7
3.0
3.3
3.6
3.9
4.3
4.7
5.1
5.6
6.2
6.8
7.5
8.2
8.7
9.1
10
11
12
13
14
15
16
17
18
19
20
22
24
25
27
28
30
33
36
39
43
IZT
mA
10
10
10
10
10
10
10
10
10
5
5
5
5
5
5
5
5
5
5
5
5
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
ZZ @ IZT
Ohms
36
40
48
51
53
55
48
35
20
15
14
13
12
12
14
16
18
24
32
36
40
126
128
130
132
134
136
138
140
142
144
146
150
155
160
165
170
VR
10% (A Suffix)
Volts
0.95
0.95
0.95
0.95
0.95
0.95
0.95
1.9
1.9
2.9
3.8
4.8
5.7
6.2
6.2
6.7
7.6
8.0
8.7
9.4
9.5
10.5
11.4
12.4
13.3
13.3
14.3
16.2
17.1
18.1
20.0
20.0
22.0
24.0
26.0
29.0
31.0
VR
5% (B Suffix)
Volts
1.0
1.0
1.0
1.0
1.0
1.0
1.0
2.0
2.0
3.0
4.0
5.0
6.0
6.5
6.5
7.0
8.0
8.4
9.1
9.9
10.0
11.0
12.0
13.0
14.0
14.0
15.0
17.0
18.0
19.0
21.0
21.0
23.0
25.0
27.0
30.0
33.0
IZM
mA
95
90
85
80
75
70
65
60
55
50
45
35
31.8
29.0
27.4
26.2
24.8
21.6
20.4
19.0
17.5
16.3
15.4
14.5
13.2
12.5
11.9
10.8
9.9
9.5
8.8
8.5
7.9
7.2
6.6
6.1
5.5
5%
SZ25B2.4
SZ25B2.7
SZ25B3.0
SZ25B3.3
SZ25B3.6
SZ25B3.9
SZ25B4.3
SZ25B4.7
SZ25B5.1
SZ25B5.6
SZ25B6.2
SZ25B6.8
SZ25B7.5
SZ25B8.2
SZ25B8.7
SZ25B9.1
SZ25B10
SZ25B11
SZ25B12
SZ25B13
SZ25B14
SZ25B15
SZ25B16
SZ25B17
SZ25B18
SZ25B19
SZ25B20
SZ25B22
SZ25B24
SZ25B25
SZ25B27
SZ25B28
SZ25B30
SZ25B33
SZ25B36
SZ25B39
SZ25B43
NOTES:
1/ All zener voltages are measured with an automated test set using a 35 msec test time. Longer or shorter test time will have a corresponding effect on the measured
value due to heating effects.
2/
3/
4/
5/
6/
Zener impedance is derived from the AC voltage divided by the AC current with RMS value of 10% of DC zener test current superimposed on the test current.
SSDI standard marking consists of a contrasting color cathode dot or band. Part number information is included on packaging labels.
For Ordering Information, Price, Operating Curves, and Availability- Contact Factory.
Screening Based on MIL-PRF-19500. Screening Flows Available on Request.
Suffix “SM” for Round Tab Surface Mount and “SMS” for Square Tab Surface Mount.
NOTE:
All specifications are subject to change without notification.
SCD's for these devices should be reviewed by SSDI prior to release.
DATA SHEET #: Z00001M
DOC
PCB Design
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