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1N5228B View Datasheet(PDF) - Microsemi Corporation

Part NameDescriptionManufacturer
1N5228B 500 mW GLASS AXIAL-LEAD ZENER DIODES Microsemi
Microsemi Corporation Microsemi
1N5228B Datasheet PDF : 3 Pages
1 2 3
SCOTTSDALE DIVISION
1N5221 thru 1N5281B, e3 DO-35
500 mW GLASS AXIAL-LEAD
ZENER DIODES
DESCRIPTION
APPEARANCE
The popular 1N5221 thru 1N5281B series of 0.5 watt Zener Voltage Regulators
provides a selection from 2.4 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 available in various military
screening levels by adding a prefix identifier as described in the Features
section. 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
DO-35
(DO-204AH)
FEATURES
APPLICATIONS / BENEFITS
JEDEC registered 1N5221 to 1N5281B
Internal bonds optionally available with “-1” suffix
Options for screening in accordance with MIL-PRF-
19500 for JAN, JANTX, JANTXV, and JANS are
available by adding MQ, MX, MV, or MSP prefixes
respectively to part numbers with “-1” suffix.
Surface mount equivalents available as MLL5221 to
MLL5281B in the DO-213AA MELF style package
including “-1” suffix options (consult factory for others)
RoHS Compliant devices available by adding “e3” suffix
DO-7 glass body axial-leaded Zener equivalents are also
available
Regulates voltage over a broad operating current
and temperature range
Extensive selection from 2.4 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 (MIL-STD-750 Method 1020)
Minimal capacitance (see Figure 2)
Inherently radiation hard per MicroNote 050
MAXIMUM RATINGS
Power dissipation at 25ºC: 0.5 watts (also see derating
in Figure 1).
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: 1.5 volts (maximum)
Solder Temperatures: 260 ºC for 10 s (max)
MECHANICAL AND PACKAGING
CASE: Hermetically sealed axial-lead glass DO-
35 (DO-204AH) package
FINISH: Tin-Lead 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
ELECTRICAL CHARACTERISTICS @ 25°C
JEDEC
Type No.
Note 1
Nominal
Zener
Voltage
VZ @ IZT
Volts
Test
Current
IZT
mA
Max Zener Impedance
A & B Suffix Only
Note 2
ZZT @ IZK
Ohms
ZZK @ IZK = 0.25
mA
Ohms
Max Reverse Current
A, B, C & D Suffix Only
Non-Suffix
IR
μA
@
VR
Volts
IR @ VR Used
For Suffix A
A
B,C & D
μA
1N5221
2.4
20
30
1N5222
2.5
20
30
1N5223
2.7
20
30
1N5224
2.8
20
30
1N5225
3.0
20
29
1N5226
3.3
20
28
1N5227
3.6
20
24
1N5228
3.9
20
23
1N5229
4.3
20
22
1N5230
4.7
20
19
1200
100
0.95
1.0
200
1250
100
0.95
1.0
200
1300
75
0.95
1.0
150
1400
75
0.95
1.0
150
1600
50
0.95
1.0
100
1600
25
0.95
1.0
100
1700
15
0.95
1.0
100
1900
10
0.95
1.0
75
2000
5.0
0.95
1.0
50
1900
50
1.9
2.0
50
Copyright © 2005
8-09-2005 REV D
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Max Zener
Voltage Temp.
Coeff.
(A & B Suffix
Only)
αVZ (% / oC)
Note 3
-0.085
-0.085
-0.080
-0.080
-0.075
-0.070
-0.065
-0.060
+/-0.055
+/-0.030
Page 1
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