1N5221 thru 1N5281,e3 DO-7
500 mW GLASS AXIAL-LEAD
ZENER DIODES
S C O T T S D A L E D I V I S I O N
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-7 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.
DO-7
(DO-204AA)
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
FEATURES
APPLICATIONS / BENEFITS
•
•
•
JEDEC registered 1N5221 to 1N5281B
Internally solder bonded
•
Regulates voltage over a broad operating current and
temperature range
•
•
Extensive selection from 2.4 to 200 V
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.
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
•
Surface mount equivalents available as MLL5221 to
MLL5281B in the DO-213AA MELF style package
(consult factory for others)
•
•
•
•
Flexible axial-lead mounting terminals
Nonsensitive to ESD per MIL-STD-750 Method 1020
Minimal capacitance (see Figure 2)
•
•
RoHS Compliant devices available by adding “e3” suffix
Smaller DO-35 glass body axial-leaded Zener
equivalents also available (see separate data sheet)
Inherently radiation hard per MicroNote 050
MAXIMUM RATINGS
MECHANICAL AND PACKAGING
•
•
Operating and Storage temperature: -65ºC to +175ºC
•
•
CASE: Hermetically sealed axial-lead glass DO-7
(DO-204AA) package
Thermal Resistance: 300 ºC/W junction to lead at 3/8
(10 mm) lead length from body, or 360ºC/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 < 25oC 3/8 inch
(10 mm) from body or 0.417 W at TA < 25ºC when
mounted on FR4 PC board as described for thermal
resistance above (also see Figure1)
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)
•
•
Forward voltage @200 mA: 1.1 volts (maximum)
Solder Temperatures: 260 ºC for 10 s (max)
•
•
WEIGHT: 0.2 grams
See package dimensions on last page
ELECTRICAL CHARACTERISTICS @ 25°C
Max Zener Impedance
Max Reverse Current
A, B, C & D Suffix Only
Max Zener
Voltage Temp.
Coeff.
(A & B Suffix
Only)
Nominal
Zener
Voltage
VZ @ IZT
Volts
A & B Suffix Only
Note 2
Test
Current
IZT
Non-Suffix
JEDEC
Type No.
Note 1
IR
μA
@
VR
Volts
IR @ VR Used
For Suffix A
μA
ZZK @ IZK = 0.25
Z
ZT @ IZK
Ohms
mA
mA
α
VZ (% / oC)
Ohms
A
B,C & D
Note 3
-0.085
-0.085
-0.080
-0.080
-0.075
-0.070
-0.065
-0.060
+/-0.055
+/-0.030
1N5221
1N5222
1N5223
1N5224
1N5225
1N5226
1N5227
1N5228
1N5229
1N5230
2.4
2.5
2.7
2.8
3.0
3.3
3.6
3.9
4.3
4.7
20
20
20
20
20
20
20
20
20
20
30
30
30
30
29
28
24
23
22
19
1200
1250
1300
1400
1600
1600
1700
1900
2000
1900
100
0.95
0.95
0.95
0.95
0.95
0.95
0.95
0.95
0.95
1.9
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
2.0
200
200
150
150
100
100
100
75
100
75
75
50
25
15
10
5.0
50
50
50
Copyright © 2005
8-29-2005 REV B
Microsemi
Page 1
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
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