1N957B Datasheet, PDF (1/3 Pages) Vishay Siliconix – Silicon Z-Diodes

DIGITRON SEMICONDUCTORS
1N957B-1N992B
500mW SILICON ZENER DIODES
MAXIMUM RATINGS
Rating
Value
Operating temperature
-65°C to +175°C
Storage temperature
-65°C to +175°C
Thermal resistance
250°C/W junction to lead at 3/8” lead length from body, or 310°C/W junction to ambient when
mounted on FR4 PC board⁽¹⁾
Steady-state power
Forward voltage
0.5W at T_L ≤ 50°C 3/8” from body or 0.48W at T_A ≤ 25°C when mounted on FR4 PC board⁽¹⁾
@ 200 mA: 1.1 volts maximum (1N957B-1N985B)
@ 200mA: 1.3 volts maximum (1N985-1N992B)
Solder temperature
1. FR4 PC board with 4mm² copper pads and track width 1mm, length 25mm.
260°C for 10 s maximum
ELECTRICAL CHARACTERISTICS @ 25°C
Part
number
(1)
Nominal
zener
voltage
(2)
V_Z
Zener
test
current
I_ZT
Maximum zener
impedance⁽³⁾
Z_ZT @
I_ZT
Z_ZK
@I_ZK
Volts
mA Ohms Ohms mA
1N957B
6.8
18.5
4.5
700
1.0
1N958B
7.5
16.5
5.5
700
0.5
1N959B
8.2
15.0
6.5
700
0.5
1N960B
9.1
14.0
7.5
700
0.5
1N961B
10
12.5
8.5
700 0.25
1N962B
11
11.5
9.5
700 0.25
1N963B
12
10.5
11.5 700 0.25
1N964B
13
9.5
13
700 0.25
1N965B
15
8.5
16
700 0.25
1N966B
16
7.8
17
700 0.25
1N967B
18
7.0
21
750 0.25
1N968B
20
6.2
25
750 0.25
1N969B
22
5.6
29
750 0.25
1N970B
24
5.2
33
750 0.25
1N971B
27
4.6
41
750 0.25
1N972B
30
4.2
49
1000 0.25
1N973B
33
3.8
58
1000 0.25
1N974B
36
3.4
70
1000 0.25
1N975B
39
3.2
80
1000 0.25
1N976B
43
3.0
93
1500 0.25
1N977B
47
2.7
105 1500 0.25
1N978B
51
2.5
125 1500 0.25
1N979B
56
2.2
150 2000 0.25
1N980B
62
2.0
185 2000 0.25
1N981B
68
1.8
230 2000 0.25
1N982B
75
1.7
270 2000 0.25
1N983B
82
1.5
330 3000 0.25
Maximum
DC zener
current
(4)
Maximum
surge
current
(5)
I_ZM
I_ZSM
mA
mA
55
300
50
275
45
250
41
225
38
200
32
175
31
160
28
150
25
130
24
120
20
110
18
100
16
90
15
80
13
70
12
65
11
60
10
55
9.5
46
8.8
44
7.9
40
7.4
37
6.8
35
6.0
30
5.5
28
5.0
26
4.6
23
Maximum reverse
leakage current
I_R
@V_R
µA
Volts
150
5.2
75
5.7
50
6.2
25
6.9
10
7.6
5
8.4
5
9.1
5
9.9
5
11.4
5
12.2
5
13.7
5
15.2
5
16.7
5
18.2
5
20.6
5
22.8
5
25.1
5
27.4
5
29.7
5
32.7
5
35.8
5
38.8
5
42.6
5
47.1
5
51.7
5
56.0
5
62.2
Maximum
temperature
coefficient
α_vz
%/°C
0.05
0.058
0.065
0.068
0.075
0.076
0.077
0.079
0.082
0.083
0.085
0.086
0.087
0.088
0.090
0.091
0.092
0.093
0.094
0.095
0.095
0.096
0.096
0.097
0.097
0.098
0.098
144 Market Street
Kenilworth NJ 07033 USA
phone +1.908.245-7200
fax +1.908.245-0555
[e-mail]
www.digitroncorp.com
Rev. 20120730