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부품번호 1N990B-1 기능
기능 Silicon 500mW Zener Diodes
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1N990B-1 데이터시트, 핀배열, 회로
1N957B-1 – 1N992B-1
Available on
commercial
versions
Silicon 500 mW Zener Diodes
Qualified per MIL-PRF-19500/117
DESCRIPTION
The popular 1N957B-1 through 1N992B-1 series of 0.5 watt Zener voltage regulators provides
a selection from 6.8 to 200 volts in a standard 5%, 2% and 1% tolerance versions. These
axial-leaded glass DO-35 Zeners feature an internal metallurgical bond and are available in
military qualified and commercial RoHS compliant versions. Military qualified versions are
available on the 1N962B-1 through 1N992B-1 range of part numbers.
Qualified Levels*:
JAN, JANTX, and
JANTXV
Important: For the latest information, visit our website http://www.microsemi.com.
FEATURES
JEDEC registered 1N957B to 1N992B number series.
Internal metallurgical bond.
*JAN, JANTX, and JANTXV qualifications are available per MIL-PRF-19500/117 for part numbers
1N962B-1 thru 1N992B-1.
Upscreening is available in reference to MIL-PRF-19500 for the range of 1N957B-1 through
1N961B-1.
(See part nomenclature for all available options.)
RoHS compliant versions available (commercial grade only).
APPLICATIONS / BENEFITS
Regulates voltage over a broad operating current and temperature range.
Extensive selection from 6.8 to 200 V.
Standard voltage tolerance is ± 5% with optional tighter tolerances of ± 2% or 1%.
Flexible axial-lead mounting terminals.
Non-sensitive to ESD per MIL-STD-750 method 1020.
Minimal capacitance.
Inherently radiation hard as described in Microsemi MicroNote 050.
MAXIMUM RATINGS
Parameters/Test Conditions
Symbol
Value
Unit
Operating and Storage Temperature
TJ and TSTG -65 to +175
ºC
Thermal Resistance Junction-to-Lead
@ .375 inch (9.53 mm) lead length from body
R ӨJL
250 ºC/W
Thermal Resistance Junction-to-Ambient when
mounted on PCB (1)
R ӨJA
300 ºC/W
Steady-State Power Dissipation
@ TL = +50°C .375 inch (9.53 mm) from body (2)
@ TA = 55°C mounted on PCB
PD 0.5 W
0.4
Forward Voltage @ IF = 200 mA
1N957 – 1N985
1N986 – 1N992
Solder Temperature @ 10 s
VF 1.1 V
1.3
TSP 260 oC
NOTES: 1. See figures 1 and 2 for derating curves. TA = +75°C on an FR4 PC board with 1 oz copper
metalization.
2. Both ends of case or diode body to heat sink at L = .375 inch (9.53 mm). Derate IZ to 0.0 mA at
+175°C.
DO-35 (DO-204AH)
Package
Also available in:
DO-213AA package
(MELF surface mount)
1N957BUR-1 –
1N992BUR-1
MSC – Lawrence
6 Lake Street,
Lawrence, MA 01841
Tel: 1-800-446-1158 or
(978) 620-2600
Fax: (978) 689-0803
MSC – Ireland
Gort Road Business Park,
Ennis, Co. Clare, Ireland
Tel: +353 (0) 65 6840044
Fax: +353 (0) 65 6822298
Website:
www.microsemi.com
T4-LDS-0287, Rev. 1 (121795)
©2012 Microsemi Corporation
Page 1 of 8




1N990B-1 pdf, 반도체, 판매, 대치품
1N957B-1 – 1N992B-1
ELECTRICAL CHARACTERISTICS
JEDEC TYPE
NUMBER
(NOTE 1)
1N957B-1
1N958B-1
1N959B-1
1N960B-1
1N961B-1
1N962B-1
1N963B-1
1N964B-1
1N965B-1
1N966B-1
1N967B-1
1N968B-1
1N969B-1
1N970B-1
1N971B-1
1N972B-1
1N973B-1
1N974B-1
1N975B-1
1N976B-1
1N977B-1
1N978B-1
1N979B-1
1N980B-1
1N981B-1
1N982B-1
1N983B-1
1N984B-1
1N985B-1
1N986B-1
1N987B-1
1N988B-1
1N989B-1
1N990B-1
1N991B-1
1N992B-1
NOMINAL
ZENER
VOLTAGE
(NOTE 2)
VZ
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
120
130
150
160
180
200
ZENER
TEST
CURRENT
I ZT
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
1.5
1.4
1.3
1.1
1.0
0.95
0.85
0.80
0.68
0.65
MAXIMUM ZENER
IMPEDANCE
Z ZT
ZZ
Ohms
4.5
5.5
6.5
7.5
8.5
9.5
11.5
13.0
16
17
21
25
29
33
41
49
58
70
80
93
105
125
150
185
230
270
330
400
500
750
900
1100
1500
1700
2200
2500
ZZK @ IZK
Ohms µA
700 250
700 250
700 250
700 250
700 250
700 250
700 250
700 250
700 250
700 250
750 250
750 250
750 250
750 250
750 250
1000 250
1000 250
1000 250
1000 250
1000 250
1500 250
1500 250
2000 250
2000 250
2000 250
2000 250
3000 250
3000 250
3000 250
4000 250
4500 250
5000 250
6000 250
6500 250
7100 250
8000 250
MAXIMUM DC
ZENER
CURRENT
(NOTE 4)
I ZM
mA
55
50
45
41
38
35
32
30
26
25
21
19
17
16
14
13
12
11
9.1
8.8
7.9
7.4
6.9
6.0
5.5
5.1
4.6
4.2
3.7
3.3
3.1
2.7
2.4
2.2
2.0
1.8
MAXIMUM
SURGE
CURRENT
(NOTE 5)
I ZSM
mA
300
275
250
225
200
590
540
500
433
406
361
325
295
271
240
216
197
180
166
151
138
127
116
105
95
86
79
71
65
59
54
50
43
40
36
32
MAXIMUM
REVERSE
LEAKAGE
CURRENT
IR @ VR
µA Volts
150 5.2
75 5.7
50 6.2
25 6.9
10 7.6
1.0 8.4
1.0 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
0.5 91
0.5 99
0.5 114
0.5 122
0.5 137
0.5 152
MAXIMUM
TEMPERATURE
COEFFICIENT
α VZ
%/°C
+0.050
+0.058
+0.065
+0.068
+0.075
+0.073
+0.076
+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
+0.099
+0.110
+0.110
+0.110
+0.110
+0.110
+0.110
+0.110
+0.110
NOTES:
1. The JEDEC type numbers shown (B suffix) have a ± 5% tolerance on nominal Zener voltage. The suffix C will have ± 2% tolerance; and suffix
D will have ± 1% tolerance.
2. Zener voltage (VZ) is measured after the test current has been applied for 20 ± 5 seconds. The device shall be suspended by its leads with
the inside edge of the mounting clips between 0.375” and 0.500” from the body. Mounting clips shall be maintained at temperature of 25 ± 8/ -
2 °C.
3. The Zener impedance is derived when a 60 cycle ac current having an rms value equal to 10% of the dc Zener current (IZT or IZK) is
superimposed on IZT or IZK. Zener impedance is measured at 2 points to ensure a sharp knee on the breakdown curve and to eliminate
unstable units. See MicroNote 202 for variation in dynamic impedance with different Zener currents.
4. The values of IZM are calculated for a ± 5% tolerance on nominal Zener voltage. Allowance has been made for the rise in Zener voltage above
VZT which results from Zener impedance and the increase in junction temperature as power dissipation approaches 400 mW. In the case of
individual diodes IZM is that value of current which results in a dissipation of 400 mW at 75°C lead temperature at 3/8” from body.
5. The surge for IZSM is a square wave or equivalent half-sine wave pulse of 1/120 sec. duration.
T4-LDS-0287, Rev. 1 (121795)
©2012 Microsemi Corporation
Page 4 of 8

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1N990B-1 전자부품, 판매, 대치품
GRAPHS
1N957B-1 – 1N992B-1
LEAD TEMPERATURE (ºC)
(At described lead length)
Inches
.000
.125
.250
.375
Millimeters
0.00
3.18
6.35
9.53
FIGURE 5
Maximum Power vs Lead Temperature And Lead Length.
T4-LDS-0287, Rev. 1 (121795)
©2012 Microsemi Corporation
Page 7 of 8

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1N990B-1

Silicon 500mW Zener Diodes

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