1N985B 반도체 회로 부품 판매점
Silicon 500mW Zener Diodes
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 Microsemi |
SCOTTSDALE DIVISION
1N957B, -1 thru 1N992B, -1, e3 DO-35
Silicon 500 mW Zener Diodes
DESCRIPTION
The popular 1N957B thru 1N992B series of 0.5 watt Zener Voltage
Regulators provides a selection from 6.8 to 200 volts in standard 5% or
10% tolerances as well as tighter tolerances identified by different suffix
letters on the part number. These glass axial-leaded DO-35 Zeners are
also optionally available with an internal-metallurgical-bond option by
adding a “-1” suffix as well as RoHS Compliant by adding an “e3” suffix.
Microsemi also offers numerous other Zener products to meet higher and
lower power applications.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
APPEARANCE
DO-35
(DO-204AH)
FEATURES
• JEDEC registered 1N957B(-1) to 1N992B(-1) series
• Internal metallurgical bond option available by adding a
“-1” suffix (similar to military product)
• Surface Mount equivalents available as MLL957B to
MLL992B or with “-1” suffix for bonded in the DO-213AA
MELF style package (consult factory for others)
• RoHS Compliant devices available by adding “e3” suffix
• DO-7 glass body axial-leaded Zener equivalents are also
available
APPLICATIONS / BENEFITS
• Regulates voltage over a broad operating
current and temperature range
• Extensive selection from 6.8 to 200 V
• Standard voltage tolerances are plus/minus 5%
with B suffix, 10 % with A suffix identification
• Tight tolerances available in plus or minus 2%
or 1% with C or D suffix respectively
• Flexible axial-lead mounting terminals
• Nonsensitive to ESD per MIL-STD-750 Method
1020
• Minimal capacitance (see Figure 3)
• Inherently radiation hard as described in
Microsemi MicroNote 050
MAXIMUM RATINGS
• Operating and Storage temperature: -65ºC to +175ºC
• Thermal Resistance: 250 ºC/W junction to lead at 3/8
(10 mm) lead length from body, or 310ºC/W junction to
ambient when mounted on FR4 PC board (1 oz Cu)
with 4 mm2 copper pads and track width 1 mm, length
25 mm
• Steady-State Power: 0.5 watts at TL < 50oC 3/8 inch
(10 mm) from body or 0.48 W at TA < 25ºC when
mounted on FR4 PC board as described for thermal
resistance above (also see Figure1)
• Forward voltage @200 mA: 1.1 volts (maximum) for
1N957B – 1N985B and 1.3 V for 1N985 – 1N992B
• Solder Temperatures: 260 ºC for 10 s (max)
MECHANICAL AND PACKAGING
• CASE: Hermetically sealed axial-lead glass
DO-35 (DO-204AH) package
• TERMINALS: Tin-Lead (Sn/Pb) or RoHS
Compliant annealed matte-Tin plating solderable
per MIL-STD-750, method 2026
• POLARITY: Cathode indicated by band. Diode
to be operated with the banded end positive with
respect to the opposite end for Zener regulation
• MARKING: Part number
• TAPE & REEL option: Standard per EIA-296
(add “TR” suffix to part number)
• WEIGHT: 0.2 grams
• See package dimensions on last page
Copyright © 2005
10-18-2005 REV C
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 1
SCOTTSDALE DIVISION
1N957B, -1 thru 1N992B, -1, e3 DO-35
Silicon 500 mW Zener Diodes
ELECTRICAL CHARACTERISTICS* @ 25oC
JEDEC
TYPE
NUMBER
(Note 1)
NOMINAL
ZENER
VOLTAGE
(Note 2)
VZ
VOLTS
ZENER
TEST
CURRENT
IZT
mA
MAX. ZENER IMPEDANCE
(Note 3)
ZZT @ IZT
OHMS
ZZK @ IZK
OHMS
mA
MAX. DC
ZENER
CURRENT
(Note 4)
IZM
mA
MAX. SURGE
CURRENT
(Note 5)
IZSM
mA
MAX. REVERSE
LEAKAGE
CURRENT
IR @ VR
μA VOLTS
MAX. TEMP.
COEFFICIENT
αVZ
%/oC
1N957B
1N958B
1N959B
1N960B
1N961B
6.8 18.5 4.5 700 1.0 55
7.5 16.5 5.5 700 .5
50
8.2 15.0 6.5 700 .5
45
9.1 14.0 7.5 700 .5
41
10 12.5 8.5 700 .25 38
300 150 5.2 +0.05
275
75 5.7
+0.058
250
50 6.2
+0.065
225
25 6.9
+0.068
200
10 7.6
+0.075
1N962B
1N963B
1N964B
1N965B
1N966B
11 11.5 9.5 700 .25 32
12 10.5 11.5 700 .25 31
13
9.5 13.0 700 .25
28
15 8.5 16 700 .25 25
16 7.8 17 700 .25 24
175
5 8.4
+0.076
160
5 9.1
+0.077
150
5 9.9
+0.079
130
5 11.4
+0.082
120
5 12.2
+0.083
1N967B 18 7.0 21 750 .25 20
1N968B 20 6.2 25 750 .25 18
1N969B 22 5.6 29 750 .25 16
1N970B 24 5.2 33 750 .25 15
1N971B 27 4.6 41 750 .25 13
110
5 13.7
+0.085
100
5 15.2
+0.086
90
5 16.7
+0.087
80
5 18.2
+0.088
70
5 20.6
+0.090
1N972B
30
4.2
49
1000
.25
12
1N973B
33
3.8
58
1000
.25
11
1N974B
36
3.4
70
1000
.25
10
1N975B
39
3.2
80
1000
.25
9.5
1N976B
43
3.0
93
1500
.25
8.8
65
5 22.8
+0.091
60
5 25.1
+0.092
55
5 27.4
+0.093
46
5 29.7
+0.094
44
5 32.7
+0.095
1N977B 47 2.7 105 1500 .25 7.9
1N978B 51 2.5 125 1500 .25 7.4
1N979B 56 2.2 150 2000 .25 6.8
1N980B 62 2.0 185 2000 .25 6.0
1N981B 68 1.8 230 2000 .25 5.5
40
5 35.8
+0.095
37
5 38.8
+0.096
35
5 42.6
+0.096
30
5 47.1
+0.097
28
5 51.7
+0.097
1N982B 75 1.7 270 2000 .25 5.0
1N983B 82 1.5 330 3000 .25 4.6
1N984B 91 1.4 400 3000 .25 4.1
1N985B 100 1.3 500 3000 .25 3.7
1N986B 110 1.1 750 4000 .25 3.3
26
5 56.0
+0.098
23
5 62.2
+0.098
21
5 69.2
+0.099
18
5 76.0
+0.11
16
5 83.6
+0.11
1N987B
1N988B
1N989B
1N990B
1N991B
1N992B
120 1.0 900 4500 .25 3.1
130
0.95
1100
5000
.25
2.7
150
0.85
1500
6000
.25
2.4
160
0.80
1700
6500
.25
2.2
180
0.68
2200
7100
.25
2.0
200
0.65
2500
8000
.25
1.8
15
5 91.2
+0.11
13
5 98.8
+0.11
12
5 114.0
+0.11
11
5 121.6
+0.11
10
5 136.8
+0.11
9
5 152.0
+0.11
* JEDEC Registered Data
NOTE 1: The JEDEC type numbers shown (B suffix) have a +/-5% tolerance on nominal Zener voltage. The suffix A is used to identify +/-
10% tolerance; suffix C is used to identify +/-2%; and suffix D is used to identify +/-1% tolerance; no suffix indicates +/-20%
tolerance.
NOTE 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 .375” and .500” from the body. Mounting clips shall be maintained at a
temperature of 25 +8/ -2oC.
NOTE 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.
NOTE 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 75oC lead
temperature at 3/8” from body.
NOTE 5: The surge for IZSM is a square wave or equivalent half-sine wave pulse of 1/120 sec. duration.
Copyright © 2005
10-18-2005 REV C
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 2
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1N985B diode
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