1N957B - 1N984B
V
Z
:
6.8 to 91V
P
D
:
500mW
FEATURES :
• Silicon planar power zener diodes.
• Standard Zener voltage tolerance is
±
5%
• Other tolerances are available upon request.
• Pb / RoHS Free
ZENER DIODES
DO - 35 Glass
(DO-204AH)
0.079(2.0 )max.
1.00 (25.4)
min.
Cathode
Mark
0.150 (3.8)
max.
MECHANICAL DATA :
Case:
DO-35 Glass Case
Weight:
approx. 0.13g
0.020 (0.52)max.
1.00 (25.4)
min.
Dimensions in inches and ( millimeters )
Rating at 25
°
C ambient temperature unless otherwise specified.
Maximum Ratings and Thermal Characteristics
Parameter
Zener Current see Table "Characteristics"
Maximum Forward Voltage at I
F
= 200 mA.
Power Dissipation at T
L
= 25°C
Thermal Resistance Junction to Ambient Air
Junction temperature
Storage temperature range
V
F
P
D
R
θ
JA
T
J
T
S
1.5
500
(1)
300
(1)
Symbol
Value
Unit
V
mW
°C/W
°C
°C
175
-65 to + 150
Notes:
(1) Valid provided that leads at a distance of 3/8” from case are kept at ambient temperature.
Page 1 of 2
Rev. 02 : March 25, 2005
ELECTRICAL CHARACTERISTICS
Rating at 25
°
C ambient temperature unless otherwise specified
Type
Number
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
Notes:
Zener Voltage
V
Z
@ I
ZT
Nominal
I
ZT
(V)
(mA)
6.8
18.5
7.5
16.5
8.2
15.0
9.1
14.0
10
12.5
11
11.5
12
10.5
13
9.5
15
8.5
16
7.8
18
7.0
20
6.2
22
5.6
24
5.2
27
4.6
30
4.2
33
3.8
36
3.4
39
3.2
43
3.0
47
2.7
51
2.5
56
2.2
62
2.0
68
1.8
75
1.7
82
1.5
91
1.4
Maximum Zener
Impedance
(1)
Z
ZT
@ I
ZT
Z
Zk
@ I
ZK
(Ω)
(Ω)
4.5
700
5.5
700
6.5
700
7.5
700
8.5
700
9.5
700
11.5
700
13
700
16
700
17
700
21
750
25
750
29
750
33
750
41
750
49
1000
58
1000
70
1000
80
1000
93
1500
105
1500
125
1500
150
2000
185
2000
230
2000
270
2000
330
3000
440
3000
I
ZK
(mA)
1.00
0.50
0.50
0.50
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
Maximum Reverse
Leakage Current
I
R
at V
R
(V)
(µA)
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
5
62.2
5
69.2
Maximum DC.
Zener Current
I
ZM(2)
(mA)
58
53
47
43
40
36
32
29
27
24
21
20
18
16
14
13
12
11
10
9.2
8.5
7.8
6.9
6.3
5.7
5.2
4.7
4.3
(1) The Zener Impedance is derived from the 1 kHz AC voltage which results when an AC current having an RMS value equal
to 10% of the Zener current (I
ZT
) is superimposed on I
ZT
. Zener Impedance is measured at two points to insure a sharp knee
on the breakdown curve and to eliminate unstable units.
(2) Valid provided that leads at a distance of 3/8” from case are kept at 25
°
C ambient temperature.
(3) The type number listed have a standard tolerance on the nominal zener voltage of
±
5.0%.
Page 2 of 2
Rev. 02 : March 25, 2005
PCB Design
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