1N957 Datasheet, PDF (1/2 Pages) Semtech Corporation – SILICON PLANAR ZENER DIODES

• 1N962B-1 THRU 1N986B-1 AVAILABLE IN JAN, JANTX AND JANTXV
PER MIL-PRF-19500/117
• METALLURGICALLY BONDED
• DOUBLE PLUG CONSTRUCTION
1N957 thru 1N986B
and
1N962B-1 thru 1N986B-1
MAXIMUM RATINGS
Operating Temperature: -65°C to +175°C
Storage Temperature: -65°C to +175°C
DC Power Dissipation: 500 mW @ +50°C
Power Derating: 4 mW / °C above +50°C
Forward Voltage @ 200mA: 1.1volts maximum
ELECTRICAL CHARACTERISTICS @ 25°C
JEDEC
TYPE
NUMBER
(NOTE 1)
1N957B
1N958B
1N959B
1N960B
1N961B
1N962B
1N963B
1N964B
1N965B
1N966B
1N967B
1N968B
1N969B
1N970B
1N971B
1N972B
1N973B
1N974B
1N975B
1N976B
1N977B
1N978B
1N979B
1N980B
1N981B
1N982B
1N983B
1N984B
1N985B
1N986B
NOMINAL
ZENER
VOLTAGE
V
Z
(NOTE 2)
VOLTS
6.8
7.5
8.2
9.1
10
11
12
13
15
16
18
20
22
24
27
30
33
36
39
43
47
51
56
62
68
75
82
91
100
110
ZENER
TEST
CURRENT
1
ZT
MAXIMUM ZENER IMPEDANCE
(NOTE 3)
ZZT @ 1ZT
ZZK @ 1ZK
mA
OHMS
OHMS
mA
18.5
4.5
16.5
5.5
15.0
6.5
14.0
7.5
12.5
8.5
700
1.0
700
.5
700
.5
700
.5
700
.25
11.5
9.5
10.5
11.5
9.5
13
8.5
16
7.8
17
700
.25
700
.25
700
.25
700
.25
700
.25
7.0
21
6.2
25
5.6
29
5.2
33
4.6
41
750
.25
750
.25
750
.25
750
.25
750
.25
4.2
49
1000
.25
3.8
58
1000
.25
3.4
70
1000
.25
3.2
90
1000
.25
3.0
93
1500
.25
2.7
105
1500
.25
2.5
125
1500
.25
2.2
150
2000
.25
2.0
185
2000
.25
1.8
230
2000
.25
1.7
270
2000
.25
1.5
330
3000
.25
1.4
400
3000
.25
1.3
500
3000
.25
1.1
750
4000
.25
MAX. DC
ZENER
CURRENT
1ZM
mA
55
50
45
41
38
32
31
28
25
24
20
18
16
15
13
12
11
10
9.5
8.8
7.9
7.4
6.8
6.0
5.5
5.0
4.6
4.1
3.7
3.3
MAX. REVERSE
LEAKAGE CURRENT
lR @ VR
µA
VOLTS
5
5.2
5
5.7
5
6.2
5
6.9
2
7.6
1
8.4
1
9.1
0.5
9.9
0.5
11
0.5
12
0.5
14
0.5
15
0.5
17
0.5
18
0.5
21
0.5
23
0.5
25
0.5
27
0.5
30
0.5
33
0.5
36
0.5
39
0.5
43
0.5
47
0.5
52
0.5
56
0.5
62
0.5
69
0.5
76
0.5
84
NOTE 1
NOTE 2
NOTE 3
Zener voltage tolerance on "B"suffix is + 5%. Suffix letter A denotes +10%. No Suffix
denotes + 20% tolerance, "C" suffix denotes + 2% and "D" suffix denotes + 1%.
Zener voltage is measured with the device junction in thermal equilibrium at
an ambient temperature of 25°C + 3°C.
Zener impedance is derived by superimposing on 1ZT A 60Hz rms a.c. current
equal to 10% of 1ZT
FIGURE 1
DESIGN DATA
CASE: Hermetically sealed glass
case. DO – 35 outline.
LEAD MATERIAL: Copper clad steel.
LEAD FINISH: Tin / Lead
THERMAL RESISTANCE: (ROJEC):
250 ˚C/W maximum at L = .375 inch
THERMAL IMPEDANCE: (ZOJX): 35
˚C/W maximum
POLARITY: Diode to be operated with
the banded (cathode) end positive.
MOUNTING POSITION: Any.
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