1N5221 thru 1N5281B, e3 DO-35
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
APPEARANCE
DO-35
(DO-204AH)
DESCRIPTION
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
FEATURES
APPLICATIONS / BENEFITS
•
•
•
JEDEC registered 1N5221 to 1N5281B
•
Regulates voltage over a broad operating current
and temperature range
Internal bonds optionally available with “-1” suffix
•
•
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 with “-1” suffix.
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
including “-1” suffix options (consult factory for others)
•
•
•
•
Flexible axial-lead mounting terminals
Nonsensitive to ESD (MIL-STD-750 Method 1020)
Minimal capacitance (see Figure 2)
•
•
RoHS Compliant devices available by adding “e3” suffix
DO-7 glass body axial-leaded Zener equivalents are also
available
Inherently radiation hard per MicroNote 050
MAXIMUM RATINGS
MECHANICAL AND PACKAGING
•
Power dissipation at 25ºC: 0.5 watts (also see derating
in Figure 1).
•
•
CASE: Hermetically sealed axial-lead glass DO-
35 (DO-204AH) package
•
•
Operating and Storage temperature: -65ºC to +175ºC
FINISH: Tin-Lead or RoHS Compliant annealed
matte-Tin plating solderable per MIL-STD-750,
method 2026
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
•
POLARITY: Cathode indicated by band. Diode to
be operated with the banded end positive with
respect to the opposite end for Zener regulation
•
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)
•
•
MARKING: Part number
TAPE & REEL option: Standard per EIA-296 (add
“TR” suffix to part number)
•
WEIGHT: 0.2 grams
•
•
Forward voltage @200 mA: 1.1 volts (maximum)
Solder Temperatures: 260 ºC for 10 s (max)
See package dimensions on last page
ELECTRICAL CHARACTERISTICS @ 25°C
Max Zener Impedance
Max Reverse Current
Max Zener
Voltage Temp.
Coeff.
Nominal
Zener
Voltage
A & B Suffix Only
Note 2
Test
Current
IZT
A, B, C & D Suffix Only
Non-Suffix
JEDEC
Type No.
Note 1
(A & B Suffix
Only)
IR
μA
@
VR
IR @ VR Used
For Suffix A
μA
ZZK @ IZK = 0.25
VZ @ IZT
ZZT @ IZK
Ohms
Volts
mA
mA
α
VZ (% / oC)
Note 3
-0.085
Volts
Ohms
A
B,C & D
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
-0.085
-0.080
-0.080
-0.075
-0.070
-0.065
-0.060
+/-0.055
+/-0.030
50
50
Copyright © 2005
8-29-2005 REV C
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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