1N957B THRU 1N992B
SILICON ZENER DIODE
6.8 VOLTS THRU 200 VOLTS
500mW, 5% TOLERANCE
w w w. c e n t r a l s e m i . c o m
DESCRIPTION:
The CENTRAL SEMICONDUCTOR 1N957B Series
Silicon Zener Diode is a high quality voltage regulator
designed for use in industrial, commercial, entertainment
and computer applications.
DO-35 CASE
MAXIMUM RATINGS:
(TL=75°C)
Power Dissipation
Operating and Storage Junction Temperature
VZ Tolerance: Part number with “B” suffix
VZ Tolerance: Part number with “C” suffix
VZ Tolerance: Part number with “D” suffix
SYMBOL
PD
TJ, Tstg
500
-65 to +200
±5
±2
±1
UNITS
mW
°C
%
%
%
ELECTRICAL CHARACTERISTICS:
(TA=25°C) VF=1.5V MAX @ IF=200mA (for all types)
ZENER
VOLTAGE
TYPE
MIN
V
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
6.460
7.125
7.790
8.645
9.500
10.45
11.40
12.35
14.25
15.20
17.10
19.00
20.90
22.80
25.65
28.50
31.35
34.20
37.05
40.85
44.65
48.45
53.20
58.90
64.60
71.25
VZ @ IZT
NOM
V
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
MAX
V
7.140
7.875
8.610
9.555
10.50
11.55
12.60
13.65
15.75
16.80
18.90
21.00
23.10
25.20
28.35
31.50
34.65
37.80
40.95
45.15
49.35
53.55
58.80
65.10
71.40
78.75
TEST
CURRENT
IZT
mA
18.5
16.5
15.0
14.0
12.5
11.5
10.5
9.5
8.5
7.8
7.0
6.2
5.6
5.2
4.6
4.2
3.8
3.4
3.2
3.0
2.7
2.5
2.2
2.0
1.8
1.7
MAXIMUM ZENER
IMPEDANCE
ZZT @ IZT
Ω
4.5
5.5
6.5
7.5
8.5
9.5
11.5
13.0
16.0
17.0
21.0
25.0
29.0
33.0
41.0
49.0
58.0
70.0
80.0
93.0
105
125
150
185
230
270
ZZK @ IZK
Ω
mA
700
700
700
700
700
700
700
700
700
700
750
750
750
750
750
1000
1000
1000
1000
1500
1500
2000
2000
2000
2000
2000
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
MAXIMUM
REVERSE
CURRENT
IR
μA
150
75
50
25
10
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
@ VR
V
5.2
5.7
6.2
6.9
7.6
8.4
9.1
9.9
11.4
12.2
13.7
15.2
16.7
18.2
20.6
22.8
25.1
27.4
29.7
32.7
35.8
38.8
42.6
47.1
51.7
56.0
MAXIMUM
ZENER
CURRENT
IZM
mA
47
42
38
35
32
28
26
24
21
19
17
15
14
13
11
10
9.2
8.5
7.8
7.0
6.4
5.9
5.4
4.9
4.5
4.0
R1 (27-October 2011)
1N957B THRU 1N992B
SILICON ZENER DIODE
6.8 VOLTS THRU 200 VOLTS
500mW, 5% TOLERANCE
ELECTRICAL CHARACTERISTICS - Continued:
(TA=25°C) VF=1.5V MAX @ IF=200mA (for all types)
ZENER
VOLTAGE
TYPE
MIN
V
1N983B
1N984B
1N985B
1N986B
1N987B
1N988B
1N989B
1N990B
1N991B
1N992B
77.90
86.45
95.00
104.5
114.0
123.5
142.5
152.0
171.0
190.0
VZ @ IZT
NOM
V
82
91
100
110
120
130
150
160
180
200
MAX
V
86.10
95.55
105.0
115.5
126.0
136.5
157.5
168.0
189.0
210.0
TEST
CURRENT
IZT
mA
1.5
1.4
1.3
1.1
1.0
0.95
0.85
0.80
0.68
0.65
MAXIMUM ZENER
IMPEDANCE
ZZT @ IZT
Ω
330
400
500
750
900
1100
1500
1700
2200
2500
ZZK @ IZK
Ω
mA
3000
3000
3000
4000
4500
5000
6000
6500
7100
8000
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
MAXIMUM
REVERSE
CURRENT
IR
μA
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
@ VR
V
62.2
69.2
76.0
83.6
91.2
98.8
114.0
121.6
136.8
152.0
MAXIMUM
ZENER
CURRENT
IZM
mA
3.7
3.3
3.0
2.7
2.5
2.3
2.0
1.9
1.7
1.5
DO-35 CASE - MECHANICAL OUTLINE
R1 (27-October 2011)
w w w. c e n t r a l s e m i . c o m
1N957B THRU 1N992B
SILICON ZENER DIODE
6.8 VOLTS THRU 200 VOLTS
500mW, 5% TOLERANCE
TYPICAL ELECTRICAL CHARACTERISTICS
R1 (27-October 2011)
w w w. c e n t r a l s e m i . c o m
OUTSTANDING SUPPORT AND SUPERIOR SERVICES
PRODUCT SUPPORT
Central’s operations team provides the highest level of support to insure product is delivered on-time.
• Supply management (Customer portals)
• Custom bar coding for shipments
• Inventory bonding
• Custom product packing
• Consolidated shipping options
DESIGNER SUPPORT/SERVICES
Central’s applications engineering team is ready to discuss your design challenges. Just ask.
• Free quick ship samples (2
nd
day air)
• Special wafer diffusions
• Online technical data and parametric search
• PbSn plating options
• SPICE models
• Package details
• Custom electrical curves
• Application notes
• Environmental regulation compliance
• Application and design sample kits
• Customer specific screening
• Custom product and package development
• Up-screening capabilities
REQUESTING PRODUCT PLATING
1.
2.
If requesting Tin/Lead plated devices, add the suffix “ TIN/LEAD” to the part number when
ordering (example: 2N2222A TIN/LEAD).
If requesting Lead (Pb) Free plated devices, add the suffix “ PBFREE” to the part number
when ordering (example: 2N2222A PBFREE).
CONTACT US
Corporate Headquarters & Customer Support Team
Central Semiconductor Corp.
145 Adams Avenue
Hauppauge, NY 11788 USA
Main Tel: (631) 435-1110
Main Fax: (631) 435-1824
Support Team Fax: (631) 435-3388
www.centralsemi.com
Worldwide Field Representatives:
www.centralsemi.com/wwreps
Worldwide Distributors:
www.centralsemi.com/wwdistributors
For the latest version of Central Semiconductor’s
LIMITATIONS AND DAMAGES DISCLAIMER,
which is part of Central’s Standard Terms and Conditions of sale, visit: www.centralsemi.com/terms
w w w. c e n t r a l s e m i . c o m
(001)
http://www.centralsemi.com
PDN01046
8/19/16
2/19/17
8/19/17
Summary:The 1N979B through 1N992B, 0.5 watt Zener diodes in the DO-35 case, are discontinued and now classified as End of Life (EOL).
Although Central Semiconductor Corp. makes every effort to continue to produce devices that have been proclaimed EOL (End of Life) by
various manufacturers, it is an accepted industry practice to discontinue certain devices when customer demand falls below a minimum
level of sustainability. Accordingly, the following product(s) have been transitioned to End of Life status as part of Central's
Product Management Process. Any replacement product will be noted below. The effective date for placing the last purchase order will
be six(6) months from the date of this notice and twelve(12) months from the notice date for final shipments; this may be extended if
inventory is available.
_________________________
Central Part Number
_________________________
Replacement
1N979B BK
N/A
1N982B BK
N/A
1N984B BK
N/A
1N986B BK
N/A
1N987B BK
N/A
1N988B BK
N/A
1N988B TR
N/A
1N990B BK
N/A
1N991B BK
N/A
1N991B TR
N/A
1N992B BK
N/A
Central would be happy to assist you by providing additional information or technical data to help locate an alternate source if we
have no replacement available. Please email your requests to engineering@centralsemi.com.
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