
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/    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. 
3/      SSDI standard marking consists of a contrasting color cathode dot or band.  Part number information is included on packaging labels. 
4/      For Ordering Information, Price, Operating Curves, and Availability- Contact Factory.  
5/      Screened to MIL-PRF-19500. 
6/     Suffix “L” for Axial, “SM” for Round Tab Surface Mount, and “SMS” for Square Tab Surface Mount. 
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 
Electrical Characteristics @ 
25°C (Unless Otherwise Specified)
SZ25A2.4 
thru 
SZ25A43
Maximum Continuous 
Current
PART
NUMBER
 6/
Nominal 
Zener 
Voltage 
(note 1)
Zener 
Test 
Current
Maximum 
Zener 
Impedance 
(note 2) 
Maximum Reverse 
Leakage Current
Axial (L) 
Surface Mount 
(SM) and (SMS)
Voltage Tolerance 
VZ @ IZT 
IZT 
ZZ @ IZT 
IR @ 
VR 
VR 
10% (A Suffix) 
VR 
5% (B Suffix) 
IZM 
IZM 
10% 
5% 
Volts 
mA 
Ohms 
μ
A 
Volts 
Volts 
mA 
mA 
SZ25A2.4 
SZ25A2.7 
SZ25A3.0 
SZ25A3.3 
SZ25A3.6 
SZ25B2.4 
SZ25B2.7 
SZ25B3.0 
SZ25B3.3 
SZ25B3.6 
2.4 
2.7 
3.0 
3.3 
3.6 
10 
10 
10 
10 
10 
30 
30 
30 
28 
24 
100 
75 
50 
25 
15 
0.95 
0.95 
0.95 
0.95 
0.95 
1.0 
1.0 
1.0 
1.0 
1.0 
95 
90 
85 
80 
75 
142.5 
135.0 
127.5 
120.0 
112.5 
SZ25A3.9 
SZ25A4.3 
SZ25A4.7 
SZ25A5.1 
SZ25A5.6 
SZ25B3.9 
SZ25B4.3 
SZ25B4.7 
SZ25B5.1 
SZ25B5.6 
3.9 
4.3 
4.7 
5.1 
5.6 
10 
10 
10 
10 
5 
23 
22 
20 
18 
14 
10 
5 
5 
5 
5 
0.95 
0.95 
1.9 
1.9 
2.9 
1.0 
1.0 
2.0 
2.0 
3.0 
70 
65 
60 
55 
50 
105.0 
97.5 
90.0 
82.5 
75.0 
SZ25A6.2 
SZ25A6.8 
SZ25A7.5 
SZ25A8.2 
SZ25A8.7 
SZ25B6.2 
SZ25B6.8 
SZ25B7.5 
SZ25B8.2 
SZ25B8.7 
6.2 
6.8 
7.5 
8.2 
8.7 
5 
5 
5 
5 
5 
10 
8 
8 
9 
9 
5 
3 
3 
3 
3 
3.8 
4.8 
5.7 
6.2 
6.2 
4.0 
5.0 
6.0 
6.5 
6.5 
45 
35 
31.8 
29.0 
27.4 
67.5 
52.5 
47.7 
43.5 
41.1 
SZ25A9.1 
SZ25A10 
SZ25A11 
SZ25A12 
SZ25A13 
SZ25B9.1 
SZ25
B
10 
SZ25B11 
SZ25B12 
SZ25B13 
9.1 
10 
11 
12 
13 
5 
5 
5 
5 
5 
11 
18 
24 
32 
15 
3 
3 
2 
1 
0.5 
6.7 
7.6 
8.0 
8.7 
9.4 
7.0 
8.0 
8.4 
9.1 
9.9 
26.2 
24.8 
21.6 
20.4 
19.0 
39.3 
37.2 
32.4 
30.6 
28.5 
SZ25A14 
SZ25A15 
SZ25A16 
SZ25A17 
SZ25A18 
SZ25B14 
SZ25B15 
SZ25B16 
SZ25B17 
SZ25B18 
14 
15 
16 
17 
18 
5 
2 
2 
2 
2 
16 
18 
18 
20 
22 
0.1 
0.1 
0.1 
0.1 
0.1 
9.5 
10.5 
11.4 
12.4 
13.3 
10.0 
11.0 
12.0 
13.0 
14.0 
17.5 
16.3 
15.4 
14.5 
13.2 
26.25 
24.45 
23.10 
21.75 
19.80 
SZ25A19 
SZ25A20 
SZ25A22 
SZ25A24 
SZ25A25 
SZ25B19 
SZ25B20 
SZ25B22 
SZ25B24 
SZ25B25 
19 
20 
22 
24 
25 
2 
2 
1 
1 
1 
24 
26 
30 
34 
36 
0.1 
0.1 
0.1 
0.1 
0.1 
13.3 
14.3 
16.2 
17.1 
18.1 
14.0 
15.0 
17.0 
18.0 
19.0 
12.5 
11.9 
10.8 
9.9 
9.5 
18.75 
17.85 
16.20 
14.85 
14.25 
SZ25A27 
SZ25A28 
SZ25A30 
SZ25A33 
SZ25A36 
SZ25B27 
SZ25B28 
SZ25B30 
SZ25B33 
SZ25B36 
27 
28 
30 
33 
36 
1 
1 
1 
1 
1 
42 
44 
50 
58 
70 
0.1 
0.1 
0.1 
0.1 
0.1 
20.0 
20.0 
22.0 
24.0 
26.0 
21.0 
21.0 
23.0 
25.0 
27.0 
8.8 
8.5 
7.9 
7.2 
6.6 
13.20 
12.75 
11.85 
10.80 
9.90 
SZ25A39 
SZ25A43 
SZ25B39 
SZ25B43 
39 
43 
1 
1 
80 
93 
0.1 
0.1 
29.0 
31.0 
30.0 
33.0 
6.1 
5.5 
9.15 
8.25 
NOTE:
  All specifications are subject to change without notification. 
SCD's for these devices should be reviewed by SSDI prior to release.
DATA SHEET #: Z00001G 
DOC